{"id":38926,"date":"2026-07-21T07:10:42","date_gmt":"2026-07-21T07:10:42","guid":{"rendered":"https:\/\/instrava.com\/?page_id=38926"},"modified":"2026-07-27T06:54:01","modified_gmt":"2026-07-27T06:54:01","slug":"sight-glass-gauges","status":"publish","type":"page","link":"https:\/\/instrava.com\/es\/instrumentos-de-medicion-de-nivel\/sight-glass-gauges\/","title":{"rendered":"Sight Glass Gauges"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"38926\" class=\"elementor elementor-38926\" data-elementor-post-type=\"page\">\n\t\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-e9dc539 e-flex e-con-boxed e-con e-parent\" data-id=\"e9dc539\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-526d1a9 e-flex e-con-boxed e-con e-parent\" data-id=\"526d1a9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-9b35f69 elementor-widget elementor-widget-breadcrumbs\" data-id=\"9b35f69\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t\t<p id=\"breadcrumbs\"><span><span><a href=\"https:\/\/instrava.com\/\">Home<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-139f54f elementor-widget elementor-widget-heading\" data-id=\"139f54f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Sight Glass Gauges: Reflex, Transparent, Tubular, Bi-Color For China Supplier<\/h1>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-b659242 e-flex e-con-boxed e-con e-parent\" data-id=\"b659242\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-def2b05 e-con-full e-flex e-con e-child\" data-id=\"def2b05\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-52d8269 elementor-widget elementor-widget-text-editor\" data-id=\"52d8269\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Your trusted sourcing partner for sight glass gauges in china\u2014quality instruments at competitive prices.<\/p><ul data-path-to-node=\"3,1\"><li><p data-path-to-node=\"3,1,0,0\">Are you overwhelmed by too many conflicting quotes?<\/p><\/li><li><p data-path-to-node=\"3,1,1,0\">Are you worried about factory capabilities because tight project deadlines and heavy procurement tasks leave you no time to audit suppliers?<\/p><\/li><li><p data-path-to-node=\"3,1,2,0\">Are you wasting time researching because every factory claims their product is the best, thereby delaying your procurement schedule?<\/p><\/li><\/ul><p data-path-to-node=\"3,2\">Instrava is here to help you solve your procurement challenges in China.<\/p><p>We serves a global clientele, including <b data-path-to-node=\"5,0\" data-index-in-node=\"47\">EPC contractors, OEM equipment manufacturers, procurement managers, distributors, traders, and engineering consultants<\/b>. We provide curated product quotations from <span class=\"rich-tooltip-trigger\">3 pre-vetted factories<span class=\"rich-tooltip-box\" style=\"cursor: default;\"><img decoding=\"async\" class=\"rich-tooltip-img\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/instrava-curated-factory-4.webp\" \/><span class=\"rich-tooltip-content\"><strong class=\"rich-tooltip-title\">Standardized Supplier Qualification Process<\/strong><span class=\"rich-tooltip-desc\">Every manufacturing partner is evaluated through our standardized supplier qualification process before being included in the Instrava sourcing network. The assessment focuses on manufacturing capability, engineering expertise, quality control, delivery reliability, and long-term service support.<\/span><\/span><\/span><\/span>, helping our clients drastically save time on sourcing, screening, and supplier comparison.<\/p><p>Whether you are <b data-path-to-node=\"2,0\" data-index-in-node=\"17\">building new industrial production lines, upgrading and replacing legacy instruments, sourcing for wholesale trade, or requiring custom OEM production<\/b>, we empower you to secure the most perfectly matched products.<\/p><p data-path-to-node=\"3,4\">Let&#8217;s collaborate for mutual success. With our customer-centric service, Instrava is your trusted procurement partner in China.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-a5a4032 e-con-full e-flex e-con e-child\" data-id=\"a5a4032\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-cd21474 elementor-widget elementor-widget-text-editor\" data-id=\"cd21474\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"manual-image-downloads\">\n\n<!-- \u82f1\u6587 PDF \u4e0b\u8f7d -->\n<a class=\"manual-download en\" href=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/Sight_Glass_Gauges_product_manual.pdf\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/01\/level-gauge-glass-tube-manual.webp\" alt=\"Download Manual English\" \/>\n<\/a>\n\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-99f50ca elementor-align-left elementor-widget elementor-widget-button\" data-id=\"99f50ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#sight-glass-level-gauge-matrix\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Get a Quote<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-33c547d e-con-full e-flex e-con e-child\" data-id=\"33c547d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-02763bf elementor-widget elementor-widget-image\" data-id=\"02763bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"247\" height=\"809\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/Sight-Glass-Gauges-Reflex-Transparent-Tubular-Bi-Color-For-China-Supplier.webp\" class=\"attachment-full size-full wp-image-39676\" alt=\"Glass material level gauge sight glass with blue handwheels and metal fittings, designed for liquid level monitoring in high-pressure liquid environments.\" srcset=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/Sight-Glass-Gauges-Reflex-Transparent-Tubular-Bi-Color-For-China-Supplier.webp 247w, https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/Sight-Glass-Gauges-Reflex-Transparent-Tubular-Bi-Color-For-China-Supplier-92x300.webp 92w, https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/Sight-Glass-Gauges-Reflex-Transparent-Tubular-Bi-Color-For-China-Supplier-4x12.webp 4w\" sizes=\"(max-width: 247px) 100vw, 247px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-e6f6407 e-flex e-con-boxed e-con e-parent\" data-id=\"e6f6407\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;laptop&quot;,&quot;tablet&quot;],&quot;sticky_anchor_link_offset&quot;:120,&quot;sticky_offset&quot;:0,&quot;sticky_effects_offset&quot;:0}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-4896cbc elementor-widget elementor-widget-html\" data-id=\"4896cbc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- =========================================\r\nINSTRAVA Secondary Nav - Style 2: Line Matrix\r\n========================================= -->\r\n\r\n<nav class=\"instrava-nav-container style-line\">\r\n  <div class=\"instrava-nav-wrapper\">\r\n    <ul class=\"instrava-nav-list\">\r\n      <li class=\"instrava-nav-item\"><a href=\"#sight-glass-gauges-parameters\">Specification<\/a><\/li>\r\n      <li class=\"instrava-nav-item\"><a href=\"#sight-glass-gauges-service\">Service<\/a><\/li>\r\n      <li class=\"instrava-nav-item\"><a href=\"#sight-glass-gauges-type\">Classification<\/a><\/li>\r\n      <li class=\"instrava-nav-item\"><a href=\"#sight-glass-gauges-application\">Application<\/a><\/li>\r\n      <li class=\"instrava-nav-item active\"><a href=\"#sight-glass-level-gauge-matrix\">Form<\/a><\/li>\r\n      <li class=\"instrava-nav-item\"><a href=\"#sight-glass-gauges-faq\">Procurement FAQ<\/a><\/li>\r\n    <\/ul>\r\n  <\/div>\r\n<\/nav>\r\n\r\n<style>\r\n.instrava-nav-container.style-line {\r\n  position: sticky;\r\n  top: 0;\r\n  z-index: 999;\r\n  width: 100%;\r\n  background: #ffffff;\r\n  border-bottom: 1px solid #e2e8f0;\r\n  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);\r\n}\r\n\r\n.instrava-nav-container.style-line .instrava-nav-wrapper {\r\n  max-width: 1400px;\r\n  margin: 0 auto;\r\n  padding: 0 20px;\r\n}\r\n\r\n.instrava-nav-container.style-line .instrava-nav-list {\r\n  display: flex;\r\n  align-items: center;\r\n  gap: 36px;\r\n  list-style: none;\r\n  margin: 0;\r\n  padding: 0;\r\n  overflow-x: auto;\r\n  scrollbar-width: none;\r\n}\r\n\r\n.instrava-nav-container.style-line .instrava-nav-list::-webkit-scrollbar {\r\n  display: none;\r\n}\r\n\r\n.instrava-nav-container.style-line .instrava-nav-item a {\r\n  position: relative;\r\n  display: block;\r\n  padding: 16px 0;\r\n  font-family: Inter, -apple-system, BlinkMacSystemFont, sans-serif;\r\n  font-size: 13.5px;\r\n  font-weight: 500;\r\n  color: #64748b;\r\n  text-decoration: none;\r\n  letter-spacing: 0.2px;\r\n  white-space: nowrap;\r\n  transition: color 0.2s ease;\r\n}\r\n\r\n\/* \u5e95\u90e8\u84dd\u8272\u6307\u793a\u7ebf\u6761\uff08\u9ed8\u8ba4\u5168\u90e8\u9690\u85cf\uff09 *\/\r\n.instrava-nav-container.style-line .instrava-nav-item a::after {\r\n  content: \"\";\r\n  position: absolute;\r\n  bottom: -1px;\r\n  left: 0;\r\n  width: 100%;\r\n  height: 2px;\r\n  background: #2563eb;\r\n  transform: scaleX(0);\r\n  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);\r\n}\r\n\r\n.instrava-nav-container.style-line .instrava-nav-item a:hover {\r\n  color: #0f172a;\r\n}\r\n\r\n\/* \u4ec5\u5728 Hover \u65f6\u5c55\u5f00\u4e0b\u5212\u7ebf\uff0c\u4e0d\u518d\u5bf9 .active \u5c55\u5f00 *\/\r\n.instrava-nav-container.style-line .instrava-nav-item a:hover::after {\r\n  transform: scaleX(1);\r\n}\r\n\r\n.instrava-nav-container.style-line .instrava-nav-item.active a {\r\n  color: #0f172a;\r\n  font-weight: 600;\r\n}\r\n\r\n@media (max-width: 768px) {\r\n  .instrava-nav-container.style-line .instrava-nav-wrapper {\r\n    padding: 0 16px;\r\n  }\r\n  .instrava-nav-container.style-line .instrava-nav-list {\r\n    gap: 24px;\r\n  }\r\n}\r\n<\/style>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-269b570 e-flex e-con-boxed e-con e-parent\" data-id=\"269b570\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-586bbba e-con-full e-flex e-con e-child\" data-id=\"586bbba\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-0939a6e elementor-widget elementor-widget-heading\" data-id=\"0939a6e\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"sight-glass-gauges-parameters\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">A Single Parameter Chart to Master All Sight Glass Gauges\n<\/h2>\t\t\t\t<\/div>\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-ccec093 elementor-widget elementor-widget-text-editor\" data-id=\"ccec093\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p data-path-to-node=\"3,1\"><span class=\"rich-tooltip-trigger\">Reflex<span\n class=\"rich-tooltip-box\" style=\"cursor: default;\">\n<img decoding=\"async\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/reflex-level-gauge-china-supplier.webp\" \nclass=\"rich-tooltip-img\"><span class=\"rich-tooltip-content\">\n<strong class=\"rich-tooltip-title\">Reflex Level Gauge\n<\/strong><span class=\"rich-tooltip-desc\">Reflex Level Gauge is an industrial liquid level measurement device that uses specially designed reflex glass to provide clear level indication. Based on optical reflection principles, the liquid and vapor phases create strong visual contrast for easy reading. It is widely used in boilers, storage tanks, chemical equipment, and high-pressure industrial systems, offering high temperature resistance, pressure durability, and reliable mechanical level monitoring.\n<\/span><\/span><\/span><\/span> | <span class=\"rich-tooltip-trigger\">Transparent\n<span class=\"rich-tooltip-box\" style=\"cursor: default;\">\n<img decoding=\"async\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/Transparent-Level-Gauge-china-supplier.webp\" \nclass=\"rich-tooltip-img\"><span class=\"rich-tooltip-content\">\n<strong class=\"rich-tooltip-title\">Transparent Level Gauge\n<\/strong><span class=\"rich-tooltip-desc\">Transparent Level Gauge is an industrial liquid level indicator featuring a double transparent glass design for direct observation of liquid color, condition, and level changes. It is widely used in chemical, petroleum, power generation, pharmaceutical, and other process industries. The transparent glass structure provides excellent visibility, pressure resistance, and reliable long-term operation for industrial liquid level monitoring applications.\n<\/span><\/span><\/span><\/span>\n | <span class=\"rich-tooltip-trigger\">Tubular\n<span class=\"rich-tooltip-box\" style=\"cursor: default;\">\n<img decoding=\"async\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/Tubular-Glass-Gauge-china-supplier.webp\" \nclass=\"rich-tooltip-img\"><span class=\"rich-tooltip-content\">\n<strong class=\"rich-tooltip-title\">Tubular Glass Gauge\n<\/strong><span class=\"rich-tooltip-desc\">Tubular Glass Level Gauge is a direct reading liquid level measurement instrument designed for industrial tanks and pressure vessels. It uses a transparent glass tube to visually indicate the liquid level inside the equipment. With a durable metal structure and reliable performance, this glass tube level indicator is widely used in boilers, storage tanks, chemical processing equipment, and industrial process control systems.\n<\/span><\/span><\/span><\/span>\n | <span class=\"rich-tooltip-trigger\">Bi-Color\n<span class=\"rich-tooltip-box\" style=\"cursor: default;\">\n<img decoding=\"async\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/Bi-Color-Level-Gauge-china-supplier.webp\" \nclass=\"rich-tooltip-img\"><span class=\"rich-tooltip-content\">\n<strong class=\"rich-tooltip-title\">Bi-Color Level Gauge\n<\/strong><span class=\"rich-tooltip-desc\">Bi-Color Level Gauge is a direct reading liquid level indicator that uses red and green color display technology to clearly distinguish liquid and vapor phases. It provides clear and reliable level observation for boilers, pressure vessels, power plants, petrochemical systems, and industrial process applications. The gauge features excellent visibility, stable operation, and customizable designs for various industrial requirements.\n<\/span><\/span><\/span><\/span><\/p>\n<p data-path-to-node=\"3,1\">When selecting the optimal gauge for your application, keep this simple rule of thumb in mind:<\/p>\n<p data-path-to-node=\"3,2\"><b data-path-to-node=\"3,2\" data-index-in-node=\"0\">\u201cTransparent for Interfaces, Bi-Color for Steam Boilers, Mica Shields for Corrosive Media.\u201d<\/b><\/p>\n<p data-path-to-node=\"3,3\">Because these gauges operate in critical industrial environments, precision and reliability are paramount. To make an informed purchasing decision, evaluate the following key parameters:<\/p>\n\n<ul data-path-to-node=\"3,4\">\n \t<li>\n<p data-path-to-node=\"3,4,0,0\"><b data-path-to-node=\"3,4,0,0\" data-index-in-node=\"0\">Process Conditions:<\/b> Media type, operating temperature, pressure, and fluid corrosiveness<\/p>\n<\/li>\n \t<li>\n<p data-path-to-node=\"3,4,1,0\"><b data-path-to-node=\"3,4,1,0\" data-index-in-node=\"0\">Mechanical &amp; Connection Specs:<\/b> Center-to-center distance, mounting orientation, and process connection standards (Flanged \/ NPT \/ SW)<\/p>\n<\/li>\n \t<li>\n<p data-path-to-node=\"3,4,2,0\"><b data-path-to-node=\"3,4,2,0\" data-index-in-node=\"0\">Safety &amp; Protection:<\/b> Explosion-proof ratings, safety ball check mechanisms, and optional protective enclosures (non-frost extensions, acrylic\/mesh guards)<\/p>\n<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-4e2853a e-con-full e-flex e-con e-child\" data-id=\"4e2853a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-ced5f52 elementor-widget elementor-widget-text-editor\" data-id=\"ced5f52\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><em>Note: Specifications may vary depending on manufacturer configuration and customization requirements.\u00a0Please <a style=\"color: #0073aa; text-decoration: no underline;\" href=\"#sight-glass-level-gauge-matrix\">contact us<\/a>\u00a0for detailed technical confirmation.<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-3fd3a42 drawer-param-table elementor-widget elementor-widget-text-editor\" data-id=\"3fd3a42\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div id=\"model-response-message-contentr_b8c98dbe7a632023\" class=\"markdown markdown-main-panel enable-luminous-fast-follows enable-updated-hr-color md-content stronger\" dir=\"ltr\" aria-busy=\"false\" aria-live=\"off\"><div class=\"table-responsive\"><table style=\"font-size: 16px;\" data-path-to-node=\"2\"><thead><tr><td><strong>Product Category<\/strong><\/td><td><strong>Universal Procurement Parameters (Applicable to All)<\/strong><\/td><td><strong>Exclusive \/ Differentiating Parameters<\/strong><\/td><td><strong>Key Customizable Options<\/strong><\/td><td><strong>Procurement &amp; Selection Notes<\/strong><\/td><\/tr><\/thead><tbody><tr><td><span data-path-to-node=\"2,1,0,0\"><b data-path-to-node=\"2,1,0,0\" data-index-in-node=\"0\">Reflex Level Gauge<\/b><\/span><\/td><td><p data-path-to-node=\"2,1,1,0\">\u2022 <b data-path-to-node=\"2,1,1,0\" data-index-in-node=\"2\">Center-to-Center (C-to-C)<\/b>: 300 \u2013 3000 mm<\/p><br data-path-to-node=\"2,1,1,1\" \/><p data-path-to-node=\"2,1,1,2\">\u2022 <b data-path-to-node=\"2,1,1,2\" data-index-in-node=\"2\">Pressure Rating<\/b>: Up to PN160 \/ Class 900<\/p><br data-path-to-node=\"2,1,1,3\" \/><p data-path-to-node=\"2,1,1,4\">\u2022 <b data-path-to-node=\"2,1,1,4\" data-index-in-node=\"2\">Operating Temperature<\/b>: -50\u00b0C to +400\u00b0C<\/p><br data-path-to-node=\"2,1,1,5\" \/><p data-path-to-node=\"2,1,1,6\">\u2022 <b data-path-to-node=\"2,1,1,6\" data-index-in-node=\"2\">Process Connection<\/b>: Flanged (ASME\/DIN\/JIS), Threaded (NPT\/G), Socket Weld (SW)<\/p><br data-path-to-node=\"2,1,1,7\" \/><p data-path-to-node=\"2,1,1,8\">\u2022 <b data-path-to-node=\"2,1,1,8\" data-index-in-node=\"2\">Wetted Materials<\/b>: Carbon Steel (A105), SS304, SS316L, Monel, Hastelloy C<\/p><br data-path-to-node=\"2,1,1,9\" \/><p data-path-to-node=\"2,1,1,10\">\u2022 <b data-path-to-node=\"2,1,1,10\" data-index-in-node=\"2\">Valve Configuration<\/b>: Isolation valves, vent\/drain valves, safety ball check system<\/p><br data-path-to-node=\"2,1,1,11\" \/><p data-path-to-node=\"2,1,1,12\">\u2022 <b data-path-to-node=\"2,1,1,12\" data-index-in-node=\"2\">Compliance &amp; Certificates<\/b>: PED 2014\/68\/EU, ATEX, NACE MR0175, PMI<\/p><\/td><td><p data-path-to-node=\"2,1,2,0\">\u2022 <b data-path-to-node=\"2,1,2,0\" data-index-in-node=\"2\">Prism Grooves<\/b>: V-shaped grooved glass structure (single-sided glass)<\/p><br data-path-to-node=\"2,1,2,1\" \/><p data-path-to-node=\"2,1,2,2\">\u2022 <b data-path-to-node=\"2,1,2,2\" data-index-in-node=\"2\">Visual Contrast<\/b>: Bright white for gas phase \/ Dark black for liquid phase<\/p><\/td><td><p data-path-to-node=\"2,1,3,0\">\u2022 Center-to-Center distance (precise to \u00b11mm)<\/p><br data-path-to-node=\"2,1,3,1\" \/><p data-path-to-node=\"2,1,3,2\">\u2022 Flange standard &amp; facing (RF\/RTJ\/FF)<\/p><br data-path-to-node=\"2,1,3,3\" \/><p data-path-to-node=\"2,1,3,4\">\u2022 Wetted materials &amp; bolting grade<\/p><br data-path-to-node=\"2,1,3,5\" \/><p data-path-to-node=\"2,1,3,6\">\u2022 Drain\/vent valve types<\/p><br data-path-to-node=\"2,1,3,7\" \/><p data-path-to-node=\"2,1,3,8\">\u2022 Scale plate (SS316 \/ Aluminum)<\/p><\/td><td><span data-path-to-node=\"2,1,4,0\"><b data-path-to-node=\"2,1,4,0\" data-index-in-node=\"0\">Not suitable for liquid-liquid interface measurement<\/b> or viscous fluids (media clogging the grooves causes refraction failure).<\/span><\/td><\/tr><tr><td><span data-path-to-node=\"2,2,0,0\"><b data-path-to-node=\"2,2,0,0\" data-index-in-node=\"0\">Transparent Level Gauge<\/b><\/span><\/td><td><p data-path-to-node=\"2,2,1,0\">\u2022 <b data-path-to-node=\"2,2,1,0\" data-index-in-node=\"2\">Center-to-Center (C-to-C)<\/b>: 300 \u2013 3000 mm<\/p><br data-path-to-node=\"2,2,1,1\" \/><p data-path-to-node=\"2,2,1,2\">\u2022 <b data-path-to-node=\"2,2,1,2\" data-index-in-node=\"2\">Pressure Rating<\/b>: Up to PN400 \/ Class 2500<\/p><br data-path-to-node=\"2,2,1,3\" \/><p data-path-to-node=\"2,2,1,4\">\u2022 <b data-path-to-node=\"2,2,1,4\" data-index-in-node=\"2\">Operating Temperature<\/b>: -196\u00b0C to +400\u00b0C<\/p><br data-path-to-node=\"2,2,1,5\" \/><p data-path-to-node=\"2,2,1,6\">\u2022 <b data-path-to-node=\"2,2,1,6\" data-index-in-node=\"2\">Process Connection<\/b>: Flanged (ASME\/DIN\/JIS), Threaded (NPT\/G), Socket Weld (SW)<\/p><br data-path-to-node=\"2,2,1,7\" \/><p data-path-to-node=\"2,2,1,8\">\u2022 <b data-path-to-node=\"2,2,1,8\" data-index-in-node=\"2\">Wetted Materials<\/b>: Carbon Steel (A105), SS304, SS316L, Monel, Hastelloy C<\/p><br data-path-to-node=\"2,2,1,9\" \/><p data-path-to-node=\"2,2,1,10\">\u2022 <b data-path-to-node=\"2,2,1,10\" data-index-in-node=\"2\">Valve Configuration<\/b>: Isolation valves, vent\/drain valves, safety ball check system<\/p><br data-path-to-node=\"2,2,1,11\" \/><p data-path-to-node=\"2,2,1,12\">\u2022 <b data-path-to-node=\"2,2,1,12\" data-index-in-node=\"2\">Compliance &amp; Certificates<\/b>: PED 2014\/68\/EU, ATEX, NACE MR0175, PMI<\/p><\/td><td><p data-path-to-node=\"2,2,2,0\">\u2022 <b data-path-to-node=\"2,2,2,0\" data-index-in-node=\"2\">Mica \/ PTFE Shield<\/b>: Protects glass from high-temp steam or acidic\/alkaline attack<\/p><br data-path-to-node=\"2,2,2,1\" \/><p data-path-to-node=\"2,2,2,2\">\u2022 <b data-path-to-node=\"2,2,2,2\" data-index-in-node=\"2\">Heating \/ Cooling Jacket<\/b>: For insulation or freeze prevention<\/p><br data-path-to-node=\"2,2,2,3\" \/><p data-path-to-node=\"2,2,2,4\">\u2022 <b data-path-to-node=\"2,2,2,4\" data-index-in-node=\"2\">Non-Frost Extension Block<\/b>: Acrylic extension for cryogenic service<\/p><\/td><td><p data-path-to-node=\"2,2,3,0\">\u2022 <b data-path-to-node=\"2,2,3,0\" data-index-in-node=\"2\">Protective Shields<\/b> (Mica \/ PCTFE \/ PTFE)<\/p><br data-path-to-node=\"2,2,3,1\" \/><p data-path-to-node=\"2,2,3,2\">\u2022 <b data-path-to-node=\"2,2,3,2\" data-index-in-node=\"2\">Heating \/ Cooling Jackets<\/b> (Steam\/Cooling fluid)<\/p><br data-path-to-node=\"2,2,3,3\" \/><p data-path-to-node=\"2,2,3,4\">\u2022 <b data-path-to-node=\"2,2,3,4\" data-index-in-node=\"2\">Non-frost extension thickness<\/b> (75 mm \u2013 250 mm)<\/p><br data-path-to-node=\"2,2,3,5\" \/><p data-path-to-node=\"2,2,3,6\">\u2022 Ex-proof illuminator \/ backlight<\/p><\/td><td><span data-path-to-node=\"2,2,4,0\">Double-sided glass design; costs 30%\u201350% more than Reflex under high pressure. <b data-path-to-node=\"2,2,4,0\" data-index-in-node=\"79\">Preferred choice for oil-water interfaces and corrosive media.<\/b><\/span><\/td><\/tr><tr><td><span data-path-to-node=\"2,3,0,0\"><b data-path-to-node=\"2,3,0,0\" data-index-in-node=\"0\">Bi-Color High-Pressure Gauge<\/b><\/span><\/td><td><p data-path-to-node=\"2,3,1,0\">\u2022 <b data-path-to-node=\"2,3,1,0\" data-index-in-node=\"2\">Center-to-Center (C-to-C)<\/b>: 300 \u2013 2000 mm<\/p><br data-path-to-node=\"2,3,1,1\" \/><p data-path-to-node=\"2,3,1,2\">\u2022 <b data-path-to-node=\"2,3,1,2\" data-index-in-node=\"2\">Pressure Rating<\/b>: Up to 32 MPa+ (Ultra-high pressure)<\/p><br data-path-to-node=\"2,3,1,3\" \/><p data-path-to-node=\"2,3,1,4\">\u2022 <b data-path-to-node=\"2,3,1,4\" data-index-in-node=\"2\">Operating Temperature<\/b>: Up to +450\u00b0C<\/p><br data-path-to-node=\"2,3,1,5\" \/><p data-path-to-node=\"2,3,1,6\">\u2022 <b data-path-to-node=\"2,3,1,6\" data-index-in-node=\"2\">Process Connection<\/b>: High-pressure flanges, Socket Weld \/ Butt Weld<\/p><br data-path-to-node=\"2,3,1,7\" \/><p data-path-to-node=\"2,3,1,8\">\u2022 <b data-path-to-node=\"2,3,1,8\" data-index-in-node=\"2\">Wetted Materials<\/b>: Forged Alloy Steel, SS316L, High-temp Alloy Steels<\/p><br data-path-to-node=\"2,3,1,9\" \/><p data-path-to-node=\"2,3,1,10\">\u2022 <b data-path-to-node=\"2,3,1,10\" data-index-in-node=\"2\">Valve Configuration<\/b>: High-pressure needle\/chain wheel valves, safety ball check<\/p><br data-path-to-node=\"2,3,1,11\" \/><p data-path-to-node=\"2,3,1,12\">\u2022 <b data-path-to-node=\"2,3,1,12\" data-index-in-node=\"2\">Compliance &amp; Certificates<\/b>: ASME Boiler Code, IBR (Indian Boiler Regs), PED<\/p><\/td><td><p data-path-to-node=\"2,3,2,0\">\u2022 <b data-path-to-node=\"2,3,2,0\" data-index-in-node=\"2\">Backlight Illuminator<\/b>: Red\/Green LED system with optical filters<\/p><br data-path-to-node=\"2,3,2,1\" \/><p data-path-to-node=\"2,3,2,2\">\u2022 <b data-path-to-node=\"2,3,2,2\" data-index-in-node=\"2\">Trapezoidal Chamber<\/b>: Refraction design yielding &#8220;Red for Steam, Green for Water&#8221;<\/p><br data-path-to-node=\"2,3,2,3\" \/><p data-path-to-node=\"2,3,2,4\">\u2022 <b data-path-to-node=\"2,3,2,4\" data-index-in-node=\"2\">Viewing Angle<\/b>: Restricted to a 20\u00b0\u201330\u00b0 visual zone<\/p><\/td><td><p data-path-to-node=\"2,3,3,0\">\u2022 <b data-path-to-node=\"2,3,3,0\" data-index-in-node=\"2\">Illuminator Voltage<\/b> (220VAC \/ 110VAC \/ 24VDC)<\/p><br data-path-to-node=\"2,3,3,1\" \/><p data-path-to-node=\"2,3,3,2\">\u2022 Explosion-proof rating (Ex d IIC T4..T6)<\/p><br data-path-to-node=\"2,3,3,3\" \/><p data-path-to-node=\"2,3,3,4\">\u2022 High-temp protective mica shields<\/p><br data-path-to-node=\"2,3,3,5\" \/><p data-path-to-node=\"2,3,3,6\">\u2022 Official ASME \/ IBR certification documents<\/p><\/td><td><span data-path-to-node=\"2,3,4,0\">Specifically designed for <b data-path-to-node=\"2,3,4,0\" data-index-in-node=\"26\">high-pressure boiler steam drums<\/b>. RFQs must verify power supply specs, ex-proof ratings, and boiler certifications.<\/span><\/td><\/tr><tr><td><span data-path-to-node=\"2,4,0,0\"><b data-path-to-node=\"2,4,0,0\" data-index-in-node=\"0\">Tubular Glass Gauge<\/b><\/span><\/td><td><p data-path-to-node=\"2,4,1,0\">\u2022 <b data-path-to-node=\"2,4,1,0\" data-index-in-node=\"2\">Center-to-Center (C-to-C)<\/b>: 300 \u2013 2000 mm<\/p><br data-path-to-node=\"2,4,1,1\" \/><p data-path-to-node=\"2,4,1,2\">\u2022 <b data-path-to-node=\"2,4,1,2\" data-index-in-node=\"2\">Pressure Rating<\/b>: Low pressure (&lt; 1.0 MPa \/ Class 150)<\/p><br data-path-to-node=\"2,4,1,3\" \/><p data-path-to-node=\"2,4,1,4\">\u2022 <b data-path-to-node=\"2,4,1,4\" data-index-in-node=\"2\">Operating Temperature<\/b>: -20\u00b0C to +120\u00b0C<\/p><br data-path-to-node=\"2,4,1,5\" \/><p data-path-to-node=\"2,4,1,6\">\u2022 <b data-path-to-node=\"2,4,1,6\" data-index-in-node=\"2\">Process Connection<\/b>: 1\/2&#8243; \u2013 1&#8243; NPT\/G threads, small-size flanges<\/p><br data-path-to-node=\"2,4,1,7\" \/><p data-path-to-node=\"2,4,1,8\">\u2022 <b data-path-to-node=\"2,4,1,8\" data-index-in-node=\"2\">Wetted Materials<\/b>: Brass, SS304, SS316<\/p><br data-path-to-node=\"2,4,1,9\" \/><p data-path-to-node=\"2,4,1,10\">\u2022 <b data-path-to-node=\"2,4,1,10\" data-index-in-node=\"2\">Valve Configuration<\/b>: Handwheel isolation valves, simple check valves<\/p><br data-path-to-node=\"2,4,1,11\" \/><p data-path-to-node=\"2,4,1,12\">\u2022 <b data-path-to-node=\"2,4,1,12\" data-index-in-node=\"2\">Compliance &amp; Certificates<\/b>: Standard Mill Test Report (MTR), CE<\/p><\/td><td><p data-path-to-node=\"2,4,2,0\">\u2022 <b data-path-to-node=\"2,4,2,0\" data-index-in-node=\"2\">Borosilicate Glass Tube<\/b>: Outer diameter 5\/8&#8243; (16 mm) or 3\/4&#8243; (19 mm)<\/p><br data-path-to-node=\"2,4,2,1\" \/><p data-path-to-node=\"2,4,2,2\">\u2022 <b data-path-to-node=\"2,4,2,2\" data-index-in-node=\"2\">Protective Guard<\/b>: Stainless steel mesh cage or acrylic guard tube<\/p><\/td><td><p data-path-to-node=\"2,4,3,0\">\u2022 Glass tube outer diameter &amp; wall thickness<\/p><br data-path-to-node=\"2,4,3,1\" \/><p data-path-to-node=\"2,4,3,2\">\u2022 Guard mesh material (SS304 \/ Acrylic)<\/p><br data-path-to-node=\"2,4,3,3\" \/><p data-path-to-node=\"2,4,3,4\">\u2022 Quick-drain valve style<\/p><\/td><td><span data-path-to-node=\"2,4,4,0\"><b data-path-to-node=\"2,4,4,0\" data-index-in-node=\"0\">Low pressure capacity and fragile.<\/b> Strictly for atmospheric\/low-pressure non-toxic clean liquid tanks. Prohibited in high-pressure or toxic service.<\/span><\/td><\/tr><\/tbody><\/table><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-bfbdca1 e-flex e-con-boxed e-con e-parent\" data-id=\"bfbdca1\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-717f7be e-con-full e-flex e-con e-child\" data-id=\"717f7be\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-227d228 elementor-widget elementor-widget-image\" data-id=\"227d228\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"640\" height=\"640\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/tank-level-gauge-sight-glass.webp\" class=\"attachment-large size-large wp-image-29619\" alt=\"A liquid storage tank level gauge sight glass with metal fittings and blue handwheels, designed for use in liquid level monitoring systems, commonly found in petrochemical and large-scale liquid storage applications.\" srcset=\"https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/tank-level-gauge-sight-glass.webp 900w, https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/tank-level-gauge-sight-glass-300x300.webp 300w, https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/tank-level-gauge-sight-glass-150x150.webp 150w, https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/tank-level-gauge-sight-glass-768x768.webp 768w, https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/tank-level-gauge-sight-glass-500x500.webp 500w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-74ef67c e-con-full e-flex e-con e-child\" data-id=\"74ef67c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-d8021a2 elementor-widget elementor-widget-heading\" data-id=\"d8021a2\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"sight-glass-gauges-service\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Carefully Selected Manufacturers, Reliable Industrial Solutions<\/h2>\t\t\t\t<\/div>\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-e6238bd elementor-widget elementor-widget-text-editor\" data-id=\"e6238bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"209\" data-end=\"373\">Instrava is a customer-focused industrial product sourcing partner, helping global buyers identify reliable instruments from China\u2019s manufacturing supply chain.<\/p><p data-start=\"375\" data-end=\"598\">When customers request a quotation, whether for a single unit or a large-volume project, Instrava focuses on providing suitable product recommendations and competitive solutions based on actual application requirements.<\/p><p data-start=\"600\" data-end=\"905\">Behind every quotation is a structured manufacturer evaluation process. Instrava carefully selects factories with proven manufacturing experience, typically 10\u201330 years in their fields, strong engineering capabilities for complex industrial conditions, and the ability to provide customized solutions.<\/p><p data-start=\"907\" data-end=\"1167\">Selected manufacturers have obtained internationally recognized certifications, including CE, UL, ATEX, EAC, IECEx, ABS, and other industry-specific approvals, helping customers reduce supplier selection risks and build more reliable procurement decisions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-0e11eaa elementor-align-left elementor-widget elementor-widget-button\" data-id=\"0e11eaa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#magnetic-float-level-gauge-matrix\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Send Inquiry Now<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-286240b e-flex e-con-boxed e-con e-parent\" data-id=\"286240b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-c7ad6d9 e-con-full e-flex e-con e-child\" data-id=\"c7ad6d9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-4008a1b elementor-widget elementor-widget-image\" data-id=\"4008a1b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"900\" height=\"900\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/boiler-water-level-gauge-glass.webp\" class=\"attachment-full size-full wp-image-29615\" alt=\"Boiler water level gauge sight glass with blue handwheels and pressure-resistant metal fittings, ensuring clear water level monitoring to prevent boiler accidents.\" srcset=\"https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/boiler-water-level-gauge-glass.webp 900w, https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/boiler-water-level-gauge-glass-300x300.webp 300w, https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/boiler-water-level-gauge-glass-150x150.webp 150w, https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/boiler-water-level-gauge-glass-768x768.webp 768w, https:\/\/instrava.com\/wp-content\/uploads\/2025\/12\/boiler-water-level-gauge-glass-500x500.webp 500w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-af23ed8 e-con-full e-flex e-con e-child\" data-id=\"af23ed8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-478543e elementor-widget elementor-widget-heading\" data-id=\"478543e\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"sight-glass-gauges-type\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Sight Glass Gauges: Unmatched Reliability in Industrial Level Monitoring<\/h2>\t\t\t\t<\/div>\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-80d1dd4 elementor-widget elementor-widget-text-editor\" data-id=\"80d1dd4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>As one of the most intuitive and reliable field instruments in industrial automation and process control, <b data-path-to-node=\"5\" data-index-in-node=\"106\">Sight Glass Gauges<\/b> deliver critical, real-time level indication. Their core advantages lie in direct visual observation, inherently safe zero-power operation, and exceptional resistance to high temperatures and extreme pressures.<\/p><p data-path-to-node=\"16\">Engineered with a heavy-duty assembly\u2014including precision gauge bodies, tempered glasses, cover plates, resilient gaskets\/cushion pads, high-tensile bolting, safety isolation valves, and vent\/drain ports\u2014they are purpose-built for <b data-path-to-node=\"16\" data-index-in-node=\"231\">pressure containment, leak prevention, and maximum visibility<\/b>.<\/p><p data-path-to-node=\"16\"><em>Note:Sealing gaskets and cushion pads are single-use consumables. Never reuse old gaskets during glass replacement to ensure pressure integrity.<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-642a0d2 desktop-param-fold elementor-widget elementor-widget-text-editor\" data-id=\"642a0d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"table-responsive\"><table data-path-to-node=\"2\"><thead><tr><td><strong>Category<\/strong><\/td><td><strong>Pressure Range<\/strong><\/td><td><strong>Applicable Media<\/strong><\/td><td><strong>Key Advantages<\/strong><\/td><\/tr><\/thead><tbody><tr><td><span data-path-to-node=\"2,1,0,0\"><b data-path-to-node=\"2,1,0,0\" data-index-in-node=\"0\">Reflex Level Gauge<\/b><\/span><\/td><td><p data-path-to-node=\"2,1,1,0\">Medium to High Pressure<\/p><p>\u00a0<\/p><p data-path-to-node=\"2,1,1,2\"><i data-path-to-node=\"2,1,1,2\" data-index-in-node=\"0\">(Up to PN160 \/ Class 900)<\/i><\/p><\/td><td><span data-path-to-node=\"2,1,2,0\">Clean liquids, LPG \/ Liquefied gas<\/span><\/td><td><span data-path-to-node=\"2,1,3,0\">High black-and-white \/ liquid-gas visual contrast, cost-effective<\/span><\/td><\/tr><tr><td><span data-path-to-node=\"2,2,0,0\"><b data-path-to-node=\"2,2,0,0\" data-index-in-node=\"0\">Transparent Level Gauge<\/b><\/span><\/td><td><p data-path-to-node=\"2,2,1,0\">High \/ Ultra-High Pressure<\/p><p>\u00a0<\/p><p data-path-to-node=\"2,2,1,2\"><i data-path-to-node=\"2,2,1,2\" data-index-in-node=\"0\">(Up to PN400 \/ Class 2500)<\/i><\/p><\/td><td><span data-path-to-node=\"2,2,2,0\">Colored liquids, liquid-liquid interface measurement, highly corrosive media<\/span><\/td><td><span data-path-to-node=\"2,2,3,0\">Compatible with protective mica shields, supports interface observation and background illumination<\/span><\/td><\/tr><tr><td><span data-path-to-node=\"2,3,0,0\"><b data-path-to-node=\"2,3,0,0\" data-index-in-node=\"0\">Bi-Color Gauge Glass<\/b><\/span><\/td><td><p data-path-to-node=\"2,3,1,0\">High \/ Ultra-High Pressure<\/p><p>\u00a0<\/p><p data-path-to-node=\"2,3,1,2\"><i data-path-to-node=\"2,3,1,2\" data-index-in-node=\"0\">(Boiler-rated, up to 32 MPa+)<\/i><\/p><\/td><td><span data-path-to-node=\"2,3,2,0\">High-pressure steam \/ Boiler drum water<\/span><\/td><td><span data-path-to-node=\"2,3,3,0\">Distinct red-and-green visual display, highly visible at night and from a distance<\/span><\/td><\/tr><tr><td><span data-path-to-node=\"2,4,0,0\"><b data-path-to-node=\"2,4,0,0\" data-index-in-node=\"0\">Tubular Glass Gauge<\/b><\/span><\/td><td><p data-path-to-node=\"2,4,1,0\">Low \/ Atmospheric Pressure<\/p><p>\u00a0<\/p><p data-path-to-node=\"2,4,1,2\"><i data-path-to-node=\"2,4,1,2\" data-index-in-node=\"0\">(Typically &lt; 1.0 MPa)<\/i><\/p><\/td><td><span data-path-to-node=\"2,4,2,0\">Non-toxic, non-hazardous clean liquids, water, light oils<\/span><\/td><td><span data-path-to-node=\"2,4,3,0\">Highly cost-effective, lightweight structure<\/span><\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-fde7624 e-flex e-con-boxed e-con e-parent\" data-id=\"fde7624\" data-element_type=\"container\" data-e-type=\"container\" id=\"sight-glass-gauges-application\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-d986a15 elementor-widget elementor-widget-html\" data-id=\"d986a15\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n\/* =========================\r\nSIGHT GLASS APPLICATION\r\n========================= *\/\r\n\r\n.sgg-app {\r\n  padding: 80px 0;\r\n  background: #ffffff;\r\n}\r\n\r\n.sgg-wrap {\r\n  max-width: 1400px;\r\n  margin: auto;\r\n  padding: 0 24px;\r\n}\r\n\r\n\/* TITLE *\/\r\n.sgg-title {\r\n  text-align: center;\r\n  margin-bottom: 60px;\r\n}\r\n\r\n.sgg-title h2 {\r\n  font-size: 32px;\r\n  line-height: 1.2;\r\n  letter-spacing: -1px;\r\n  margin: 0 0 15px;\r\n  color: #0f172a;\r\n}\r\n\r\n.sgg-title p {\r\n  font-size: 17px;\r\n  color: #64748b;\r\n}\r\n\r\n\/* MAIN GRID *\/\r\n.sgg-grid {\r\n  display: grid;\r\n  grid-template-columns: 380px 1fr;\r\n  gap: 45px;\r\n  align-items: start;\r\n}\r\n\r\n\/* =========================\r\nLEFT MENU\r\n========================= *\/\r\n.sgg-nav {\r\n  display: flex;\r\n  flex-direction: column;\r\n  gap: 14px;\r\n}\r\n\r\n.sgg-item {\r\n  display: flex;\r\n  align-items: center;\r\n  gap: 16px;\r\n  padding: 18px 20px;\r\n  border-radius: 16px;\r\n  background: #ffffff;\r\n  border: 1px solid #e2e8f0;\r\n  cursor: pointer;\r\n  transition: .35s ease;\r\n}\r\n\r\n.sgg-item:hover {\r\n  transform: translateX(5px);\r\n  border-color: #2563eb;\r\n  background: #f8fafc;\r\n}\r\n\r\n.sgg-item.active {\r\n  background: #eff6ff;\r\n  border-color: #2563eb;\r\n  transform: translateX(6px);\r\n  box-shadow: 0 10px 25px rgba(37, 99, 235, .08);\r\n}\r\n\r\n.sgg-icon {\r\n  width: 48px;\r\n  height: 48px;\r\n  flex-shrink: 0;\r\n  border-radius: 12px;\r\n  display: flex;\r\n  align-items: center;\r\n  justify-content: center;\r\n  background: #eff6ff;\r\n  color: #2563eb;\r\n}\r\n\r\n.sgg-icon svg {\r\n  width: 26px;\r\n  height: 26px;\r\n}\r\n\r\n.sgg-item span {\r\n  font-size: 15px;\r\n  font-weight: 700;\r\n  line-height: 1.4;\r\n  color: #0f172a;\r\n}\r\n\r\n\/* =========================\r\nRIGHT CONTENT\r\n========================= *\/\r\n.sgg-content {\r\n  padding: 42px;\r\n  border-radius: 28px;\r\n  background: #ffffff;\r\n  border: 1px solid rgba(148, 163, 184, .18);\r\n  box-shadow: 0 20px 60px rgba(15, 23, 42, .06);\r\n  min-height: 480px;\r\n}\r\n\r\n.content-box {\r\n  display: none;\r\n  animation: fade .35s ease;\r\n}\r\n\r\n.content-box.active {\r\n  display: block;\r\n}\r\n\r\n@keyframes fade {\r\n  from {\r\n    opacity: 0;\r\n    transform: translateY(12px);\r\n  }\r\n  to {\r\n    opacity: 1;\r\n    transform: translateY(0);\r\n  }\r\n}\r\n\r\n.content-box h3 {\r\n  font-size: 26px;\r\n  line-height: 1.3;\r\n  margin: 0 0 22px;\r\n  color: #0f172a;\r\n}\r\n\r\n.content-box p {\r\n  font-size: 15px;\r\n  line-height: 1.85;\r\n  color: #475569;\r\n  margin: 0 0 20px;\r\n}\r\n\r\n.highlight-box {\r\n  background: #f8fafc;\r\n  border-left: 4px solid #2563eb;\r\n  padding: 16px 20px;\r\n  border-radius: 0 12px 12px 0;\r\n  margin-top: 20px;\r\n}\r\n\r\n.highlight-box p {\r\n  margin: 0;\r\n  font-size: 14px;\r\n  font-weight: 600;\r\n  color: #1e293b;\r\n}\r\n\r\n\/* =========================\r\nRESPONSIVE\r\n========================= *\/\r\n@media(max-width:1000px) {\r\n  .sgg-grid {\r\n    grid-template-columns: 1fr;\r\n  }\r\n  .sgg-nav {\r\n    display: grid;\r\n    grid-template-columns: repeat(2, 1fr);\r\n  }\r\n}\r\n\r\n@media(max-width:640px) {\r\n  .sgg-app {\r\n    padding: 60px 0;\r\n  }\r\n  .sgg-title h2 {\r\n    font-size: 28px;\r\n  }\r\n  .sgg-nav {\r\n    grid-template-columns: 1fr;\r\n  }\r\n  .sgg-content {\r\n    padding: 28px 22px;\r\n  }\r\n  .content-box h3 {\r\n    font-size: 22px;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<section class=\"sgg-app\">\r\n  <div class=\"sgg-wrap\">\r\n\r\n    <div class=\"sgg-title\">\r\n      <h2>Cross-Industry Applications of Sight Glass Level Gauges<\/h2>\r\n      <p>Direct, power-free visual level indication tailored for extreme pressures, corrosive media, cryogenic fuels, and hygienic processes.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"sgg-grid\">\r\n\r\n      <!-- LEFT MENU -->\r\n      <div class=\"sgg-nav\">\r\n\r\n        <div class=\"sgg-item active\" data-target=\"power\">\r\n          <div class=\"sgg-icon\">\r\n            <svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\">\r\n              <path d=\"M13 2L3 14h9l-1 8 10-12h-9l1-8z\"\/>\r\n            <\/svg>\r\n          <\/div>\r\n          <span>Power Generation & High-Pressure Boilers<\/span>\r\n        <\/div>\r\n\r\n        <div class=\"sgg-item\" data-target=\"refining\">\r\n          <div class=\"sgg-icon\">\r\n            <svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\">\r\n              <path d=\"M12 2v6m0 0l-3-3m3 3l3-3\"\/>\r\n              <path d=\"M3 21h18\"\/>\r\n              <path d=\"M6 21V10l6-4 6 4v11\"\/>\r\n            <\/svg>\r\n          <\/div>\r\n          <span>Oil & Gas Refining and Petrochemicals<\/span>\r\n        <\/div>\r\n\r\n        <div class=\"sgg-item\" data-target=\"chemical\">\r\n          <div class=\"sgg-icon\">\r\n            <svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\">\r\n              <path d=\"M10 2v6.5L4.82 17a2 2 0 0 0 1.71 3h10.94a2 2 0 0 0 1.71-3L14 8.5V2\"\/>\r\n              <path d=\"M8.5 2h7\"\/>\r\n              <path d=\"M7 16h10\"\/>\r\n            <\/svg>\r\n          <\/div>\r\n          <span>Chemical Processing & Acid Production<\/span>\r\n        <\/div>\r\n\r\n        <div class=\"sgg-item\" data-target=\"cryo\">\r\n          <div class=\"sgg-icon\">\r\n            <svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\">\r\n              <path d=\"M12 2v20M17 5H9.5a3.5 3.5 0 0 0 0 7h5a3.5 3.5 0 0 1 0 7H6\"\/>\r\n            <\/svg>\r\n          <\/div>\r\n          <span>LPG, LNG & Cryogenic Fuel Storage<\/span>\r\n        <\/div>\r\n\r\n        <div class=\"sgg-item\" data-target=\"hygienic\">\r\n          <div class=\"sgg-icon\">\r\n            <svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\">\r\n              <path d=\"M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l8.78-8.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z\"\/>\r\n            <\/svg>\r\n          <\/div>\r\n          <span>Pharma, Food & Sanitary Utilities<\/span>\r\n        <\/div>\r\n\r\n        <div class=\"sgg-item\" data-target=\"utility\">\r\n          <div class=\"sgg-icon\">\r\n            <svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\">\r\n              <path d=\"M12 2a7 7 0 0 0-7 7c0 5.25 7 13 7 13s7-7.75 7-13a7 7 0 0 0-7-7z\"\/>\r\n              <circle cx=\"12\" cy=\"9\" r=\"2.5\"\/>\r\n            <\/svg>\r\n          <\/div>\r\n          <span>Water Treatment & General Utilities<\/span>\r\n        <\/div>\r\n\r\n      <\/div>\r\n\r\n      <!-- RIGHT CONTENT -->\r\n      <div class=\"sgg-content\">\r\n\r\n        <!-- 1. POWER GENERATION -->\r\n        <div class=\"content-box active\" id=\"power\">\r\n          <h3>Power Generation & High-Pressure Boilers<\/h3>\r\n          <p>\r\n            In thermal power stations, biomass plants, and combined-cycle heat recovery steam generators (HRSG), monitoring high-pressure steam drum levels is critical to prevent catastrophic boiler dry-outs or steam turbine blade erosion.\r\n          <\/p>\r\n          <p>\r\n            <strong><span class=\"rich-tooltip-trigger\">Bi-Color Sight Glass Gauges\r\n<span class=\"rich-tooltip-box\" style=\"cursor: default;\">\r\n<img decoding=\"async\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/07\/bi-color-sight-glass-level-gauge-LED-backlighting.webp\" \r\nclass=\"rich-tooltip-img\"><span class=\"rich-tooltip-content\">\r\n<strong class=\"rich-tooltip-title\">\r\n<\/strong><span class=\"rich-tooltip-desc\">\"The side-mounted Bi-Color Gauges with LED backlighting have been performing flawlessly on our storage tanks. The build quality is exceptional, and the vibrant red\/green LED contrast makes field inspection fast and safe. Combined with their fast, professional service team, they have proven to be a highly trusted partner for our industrial operations.\"\r\n\u2014 J\u00fcrgen Zimmermann, Head of Industrial Purchasing, Munich, Germany\r\n<\/span><\/span><\/span><\/span><\/strong> are purpose-built for ultra-high pressure applications (up to 32 MPa and +450\u00b0C). Utilizing optical trapezoidal prisms and high-intensity LED backlighting, they produce a sharp, unmistakable <strong>\u201cRed for Steam, Green for Water\u201d<\/strong> color transition, enabling operators to read water levels clearly from distance in dark control environments.\r\n          <\/p>\r\n          <div class=\"highlight-box\">\r\n            <p> Recommended Configuration: Bi-Color Gauges with ASME Section I compliance and protective mica shields.<\/p>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <!-- 2. OIL & GAS -->\r\n        <div class=\"content-box\" id=\"refining\">\r\n          <h3>Oil & Gas Refining and Petrochemicals<\/h3>\r\n          <p>\r\n            Refineries, offshore separators, and distillation units process flammable hydrocarbons requiring explosion-proof and leak-tight visual level monitoring.\r\n          <\/p>\r\n          <p>\r\n            <strong>Reflex Level Gauges<\/strong> use single-piece grooved prism glasses to create stark black-and-white visual contrast for clean liquids like LPG, gasoline, and naphtha. For oil-water interface separation (such as desalter vessels or condensate tanks), <strong>Transparent Level Gauges<\/strong> provide dual-sided glass viewing to let operators monitor fluid separation layers and color boundaries directly.\r\n          <\/p>\r\n          <div class=\"highlight-box\">\r\n            <p> Recommended Configuration: Reflex Gauges for clean fuels; Transparent Gauges for liquid-liquid interfaces.<\/p>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <!-- 3. CHEMICAL PROCESSING -->\r\n        <div class=\"content-box\" id=\"chemical\">\r\n          <h3>Chemical Processing & Acid Production<\/h3>\r\n          <p>\r\n            Aggressive chemicals like sulfuric acid (H\u2082SO\u2084), hydrochloric acid (HCl), caustic soda, and corrosive process solvents quickly etch standard gauge glass and degrade metal housings.\r\n          <\/p>\r\n          <p>\r\n            <strong>Transparent Level Gauges<\/strong> equipped with high-purity <strong>Mica Shields<\/strong> or <strong>PCTFE\/PTFE protective liners<\/strong> prevent chemical attack and glass corrosion under high temperature and pressure. Built with forged 316L Stainless Steel, Monel, or Hastelloy bodies, these gauges deliver long service life without risking catastrophic chemical leaks.\r\n          <\/p>\r\n          <div class=\"highlight-box\">\r\n            <p> Recommended Configuration: Transparent Gauges with Mica Shields and NACE MR0175 compliant wetted materials.<\/p>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <!-- 4. CRYOGENIC & LPG -->\r\n        <div class=\"content-box\" id=\"cryo\">\r\n          <h3>LPG, LNG & Cryogenic Fuel Storage<\/h3>\r\n          <p>\r\n            Liquefied Petroleum Gas (LPG), Liquefied Natural Gas (LNG), and cryogenic fluids (like liquid nitrogen or ammonia) stored under pressure present severe freezing and condensation challenges.\r\n          <\/p>\r\n          <p>\r\n            High-pressure <strong>Transparent and Reflex Level Gauges<\/strong> are fitted with customized <strong>Acrylic Non-Frost Extension Blocks<\/strong> (ranging from 75mm to 250mm). These extension blocks push ice buildup away from the optical glass, ensuring crystal-clear visual observation even at cryogenic temperatures down to -196\u00b0C.\r\n          <\/p>\r\n          <div class=\"highlight-box\">\r\n            <p> Recommended Configuration: Reflex or Transparent Gauges with Non-Frost Extension Blocks & Ex d Illuminators.<\/p>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <!-- 5. PHARMA & FOOD -->\r\n        <div class=\"content-box\" id=\"hygienic\">\r\n          <h3>Pharma, Food & Sanitary Utilities<\/h3>\r\n          <p>\r\n            Hygienic processing in biopharmaceuticals, beverage brewing, and dairy plants requires zero liquid dead-legs, easy cleaning, and FDA-compliant materials.\r\n          <\/p>\r\n          <p>\r\n            Sanitary-grade <strong>Tubular Glass Gauges<\/strong> or low-pressure <strong>Transparent Gauges<\/strong> with polished SS316L wetted surfaces, Tri-Clamp process connections, and FDA-certified EPDM\/PTFE gaskets ensure strict sanitary compliance while permitting 360\u00b0 visual inspection of clean CIP fluids and product tanks.\r\n          <\/p>\r\n          <div class=\"highlight-box\">\r\n            <p> Recommended Configuration: Stainless Steel Sanitary Tubular Gauges with Tri-Clamp connections & FDA gaskets.<\/p>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <!-- 6. WATER & UTILITIES -->\r\n        <div class=\"content-box\" id=\"utility\">\r\n          <h3>Water Treatment & General Utilities<\/h3>\r\n          <p>\r\n            Atmospheric storage tanks, commercial water treatment basins, lube oil reservoirs, and diesel day tanks demand simple, zero-maintenance local level readings without expensive power wiring.\r\n          <\/p>\r\n          <p>\r\n            <strong>Tubular Glass Gauges<\/strong> offer an economical, lightweight solution for low-pressure (< 1.0 MPa) non-toxic applications. Outfitted with stainless steel protective cages or acrylic shield tubes, they protect the heavy-wall borosilicate glass tube from accidental impact while offering immediate local reading.\r\n          <\/p>\r\n          <div class=\"highlight-box\">\r\n            <p> Recommended Configuration: Tubular Gauges with Stainless Steel Guard Cage & quick-drain isolation valves.<\/p>\r\n          <\/div>\r\n        <\/div>\r\n\r\n      <\/div>\r\n\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n<script>\r\ndocument.querySelectorAll(\".sgg-item\").forEach(item => {\r\n  item.addEventListener(\"click\", function() {\r\n    let target = this.getAttribute(\"data-target\");\r\n\r\n    \/\/ active menu\r\n    document.querySelectorAll(\".sgg-item\").forEach(el => el.classList.remove(\"active\"));\r\n    this.classList.add(\"active\");\r\n\r\n    \/\/ change content\r\n    document.querySelectorAll(\".content-box\").forEach(box => box.classList.remove(\"active\"));\r\n    document.getElementById(target).classList.add(\"active\");\r\n  });\r\n});\r\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-36de4fc e-flex e-con-boxed e-con e-parent\" data-id=\"36de4fc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-dd46c24 elementor-widget elementor-widget-html\" data-id=\"dd46c24\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<div class=\"instrava-spec-container\">\r\n    <div class=\"matrix-header\">\r\n        <h2 class=\"matrix-title\" id=\"sight-glass-level-gauge-matrix\">Sight Glass Level Gauges Ordering Matrix<\/h2>\r\n        <p class=\"matrix-subtitle\">Interactive configuration matrix for Reflex, Transparent, Tubular, and High-Pressure Bi-Color Glass Level Gauges across Oil & Gas, Power Boilers, Petrochemical, and Hygienic applications.<\/p>\r\n    <\/div>\r\n\r\n    <!-- CLIENT PROFILE SECTION -->\r\n    <div class=\"matrix-step-block profile-block\">\r\n        <div class=\"step-badge profile-badge\">CLIENT PROFILE<\/div>\r\n        <div class=\"step-header-text\">Customer Profile & Industry<\/div>\r\n        <div class=\"profile-input-wrapper\">\r\n            <input type=\"text\" id=\"client-profile-input\" class=\"profile-input-field\" placeholder=\"Client Type + Industry (e.g., EPC Contractor \/ Power Boiler Plant \/ Chemical OEM)\">\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 1 -->\r\n    <div class=\"matrix-step-block\" data-step=\"1\">\r\n        <div class=\"step-badge\">STEP 1<\/div>\r\n        <div class=\"step-header-text\">Sight Glass Gauge Type<\/div>\r\n        <div class=\"matrix-grid grid-4\">\r\n            <div class=\"grid-card\" data-code=\"RFX\"><div class=\"card-code\">RFX<\/div><div class=\"card-desc\">Reflex Glass Gauge<br><small>Prismatic grooved glass (Light\/Dark reflection)<\/small><\/div><\/div>\r\n            <div class=\"grid-card pro-card\" data-code=\"TRN\"><div class=\"card-code\">TRN<\/div><div class=\"card-desc\">Transparent Glass Gauge<br><small>Dual flat glass (Corrosive \/ Interface \/ Dirty media)<\/small><\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"TUB\"><div class=\"card-code\">TUB<\/div><div class=\"card-desc\">Tubular Glass Gauge<br><small>Borosilicate glass tube (Low pressure \/ Water)<\/small><\/div><\/div>\r\n            <div class=\"grid-card highlight-card\" data-code=\"BIC\"><div class=\"card-code\">BIC<\/div><div class=\"card-desc\">Bi-Color Glass Gauge<br><small>Red\/Green optical refraction (High-temp boiler)<\/small><\/div><\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 2 -->\r\n    <div class=\"matrix-step-block\" data-step=\"2\">\r\n        <div class=\"step-badge\">STEP 2<\/div>\r\n        <div class=\"step-header-text\">Nominal Pressure Standard<\/div>\r\n        <div class=\"matrix-grid grid-6\">\r\n            <div class=\"grid-card\" data-code=\"PN10\"><div class=\"card-code\">PN10<\/div><div class=\"card-desc\">10 bar (Class 150#)<\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"PN16\"><div class=\"card-code\">PN16<\/div><div class=\"card-desc\">16 bar<\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"PN25\"><div class=\"card-code\">PN25<\/div><div class=\"card-desc\">25 bar<\/div><\/div>\r\n            <div class=\"grid-card pro-card\" data-code=\"PN40\"><div class=\"card-code\">PN40<\/div><div class=\"card-desc\">40 bar (Class 300#)<\/div><\/div>\r\n            <div class=\"grid-card pro-card\" data-code=\"PN100\"><div class=\"card-code\">PN100<\/div><div class=\"card-desc\">100 bar (Class 600#)<\/div><\/div>\r\n            <div class=\"grid-card highlight-card\" data-code=\"PN160\"><div class=\"card-code\">PN160<\/div><div class=\"card-desc\">160 bar (Class 900#)<\/div><\/div>\r\n            <div class=\"grid-card highlight-card\" data-code=\"PN250\"><div class=\"card-code\">PN250<\/div><div class=\"card-desc\">250 bar (Class 1500#)<\/div><\/div>\r\n            <div class=\"grid-card highlight-card\" data-code=\"PN320\"><div class=\"card-code\">PN320<\/div><div class=\"card-desc\">320 bar (Class 2500#)<\/div><\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 3 -->\r\n    <div class=\"matrix-step-block\" data-step=\"3\">\r\n        <div class=\"step-badge\">STEP 3<\/div>\r\n        <div class=\"step-header-text\">Wetted Body Material<\/div>\r\n        <div class=\"matrix-grid grid-4\">\r\n            <div class=\"grid-card\" data-code=\"CS\"><div class=\"card-code\">CS<\/div><div class=\"card-desc\">Carbon Steel (A105 \/ A350 LF2)<\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"P1\"><div class=\"card-code\">P1<\/div><div class=\"card-desc\">SS304 \/ 304L Stainless Steel<\/div><\/div>\r\n            <div class=\"grid-card pro-card\" data-code=\"P2\"><div class=\"card-code\">P2<\/div><div class=\"card-desc\">SS316 \/ 316L Stainless Steel<\/div><\/div>\r\n            <div class=\"grid-card highlight-card\" data-code=\"HC\"><div class=\"card-code\">HC<\/div><div class=\"card-desc\">Hastelloy C276 \/ Monel \/ Duplex<\/div><\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 4 -->\r\n    <div class=\"matrix-step-block\" data-step=\"4\">\r\n        <div class=\"step-badge\">STEP 4<\/div>\r\n        <div class=\"step-header-text\">Sight Glass Material & Protection<\/div>\r\n        <div class=\"matrix-grid grid-4\">\r\n            <div class=\"grid-card\" data-code=\"BOR\"><div class=\"card-code\">BOR<\/div><div class=\"card-desc\">Borosilicate Glass<br><small>Standard thermal shock resistant<\/small><\/div><\/div>\r\n            <div class=\"grid-card pro-card\" data-code=\"ALU\"><div class=\"card-code\">ALU<\/div><div class=\"card-desc\">Aluminosilicate Glass<br><small>High-pressure \/ High-temp applications<\/small><\/div><\/div>\r\n            <div class=\"grid-card highlight-card\" data-code=\"MICA\"><div class=\"card-code\">MICA<\/div><div class=\"card-desc\">Glass + Mica Shield<br><small>Protection against steam\/alkaline erosion<\/small><\/div><\/div>\r\n            <div class=\"grid-card highlight-card\" data-code=\"PCTFE\"><div class=\"card-code\">PCTFE<\/div><div class=\"card-desc\">Glass + PCTFE \/ Kel-F Shield<br><small>Protection against hydrofluoric acid (HF)<\/small><\/div><\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 5 -->\r\n    <div class=\"matrix-step-block\" data-step=\"5\">\r\n        <div class=\"step-badge\">STEP 5<\/div>\r\n        <div class=\"step-header-text\">Process Connection Style & Size<\/div>\r\n        <div class=\"matrix-grid grid-3\">\r\n            <div class=\"grid-card\" data-code=\"FLG\"><div class=\"card-code\">Flange<\/div><div class=\"card-desc\">Process Flange Connection<br><small>DN15~DN50 \/ 1\/2\"~2\" (RF, RTJ, Male\/Female)<\/small><\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"SW_NPT\"><div class=\"card-code\">SW \/ NPT<\/div><div class=\"card-desc\">Socket Weld or Threaded<br><small>1\/2\", 3\/4\", 1\" NPT or Socket Weld<\/small><\/div><\/div>\r\n            <div class=\"grid-card highlight-card\" data-code=\"TC\"><div class=\"card-code\">Tri-Clamp<\/div><div class=\"card-desc\">Sanitary Tri-Clamp<br><small>Food & Pharma Hygienic Standard<\/small><\/div><\/div>\r\n        <\/div>\r\n        <div class=\"range-input-container\" style=\"margin-top:15px;\">\r\n            <div class=\"input-prefix-box\" style=\"width: auto;\">\r\n                <input type=\"text\" id=\"input-step-5-detail\" class=\"matrix-text-input\" placeholder=\"Connection detail (e.g., 3\/4&quot; ANSI 300# RTJ \/ DN25 PN40 RF)\" style=\"width:340px; text-align: left; padding-left: 10px !important;\">\r\n            <\/div>\r\n            <div class=\"range-instructions\">Enter precise flange rating, sealing face, thread specification, or clamp standards.<\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 6 -->\r\n    <div class=\"matrix-step-block\" data-step=\"6\">\r\n        <div class=\"step-badge\">STEP 6<\/div>\r\n        <div class=\"step-header-text\">Operating Temperature Range<\/div>\r\n        <div class=\"matrix-grid grid-5\">\r\n            <div class=\"grid-card highlight-card\" data-code=\"CRYO\"><div class=\"card-code\">CRYO<\/div><div class=\"card-desc\">-196\u2103 ~ -40\u2103<br><small>Cryogenic Service<\/small><\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"STD\"><div class=\"card-code\">STD<\/div><div class=\"card-desc\">-40\u2103 ~ 120\u2103<br><small>Standard Ambient<\/small><\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"MID\"><div class=\"card-code\">MID<\/div><div class=\"card-desc\">120\u2103 ~ 250\u2103<br><small>Medium Temp<\/small><\/div><\/div>\r\n            <div class=\"grid-card pro-card\" data-code=\"HT\"><div class=\"card-code\">HT<\/div><div class=\"card-desc\">250\u2103 ~ 400\u2103<br><small>High Temp Steam<\/small><\/div><\/div>\r\n            <div class=\"grid-card highlight-card\" data-code=\"EHT\"><div class=\"card-code\">EHT<\/div><div class=\"card-desc\">> 400\u2103<br><small>Ultra High-Temp Boiler<\/small><\/div><\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 7 -->\r\n    <div class=\"matrix-step-block\" data-step=\"7\">\r\n        <div class=\"step-badge\">STEP 7<\/div>\r\n        <div class=\"step-header-text\">Center-to-Center (C-C) Distance & Visible Length<\/div>\r\n        <div class=\"range-input-container\">\r\n            <div class=\"input-prefix-box\">\r\n                <input type=\"text\" id=\"input-step-7\" class=\"matrix-text-input\" placeholder=\"e.g., 850\">\r\n                <span class=\"input-unit\">mm<\/span>\r\n            <\/div>\r\n            <div class=\"range-instructions\">Enter Center-to-Center C-C distance. Sectional glass bodies will be engineered automatically for long ranges.<\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 8 -->\r\n    <div class=\"matrix-step-block\" data-step=\"8\">\r\n        <div class=\"step-badge\">STEP 8<\/div>\r\n        <div class=\"step-header-text\">Valve Type & Safety Features<\/div>\r\n        <div class=\"matrix-grid grid-4\">\r\n            <div class=\"grid-card pro-card\" data-code=\"SBCV\"><div class=\"card-code\">SBCV<\/div><div class=\"card-desc\">Safety Ball Check Valve<br><small>Auto-close on glass rupture<\/small><\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"OFFSET\"><div class=\"card-code\">OFFSET<\/div><div class=\"card-desc\">Offset Pattern Valve<br><small>Allows glass cleaning without removal<\/small><\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"ST_PLUG\"><div class=\"card-code\">ST_PLUG<\/div><div class=\"card-desc\">Straight-through Plug Valve<br><small>Economical isolation valve<\/small><\/div><\/div>\r\n            <div class=\"grid-card pro-card\" data-code=\"DRAIN_VENT\"><div class=\"card-code\">V\/D Valves<\/div><div class=\"card-desc\">Vent & Drain Needle\/Ball Valves<br><small>Full double isolation valves<\/small><\/div><\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 9 -->\r\n    <div class=\"matrix-step-block\" data-step=\"9\">\r\n        <div class=\"step-badge\">STEP 9<\/div>\r\n        <div class=\"step-header-text\">Illuminator & Special Accessories<\/div>\r\n        <div class=\"matrix-grid grid-4\">\r\n            <div class=\"grid-card pro-card\" data-code=\"EX_ILL\"><div class=\"card-code\">EX_ILL<\/div><div class=\"card-desc\">Explosion-Proof LED Illuminator<br><small>Exd IICT6 for night\/dark viewing<\/small><\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"FROST\"><div class=\"card-code\">FROST<\/div><div class=\"card-desc\">Non-Frost Shield (Acrylic Block)<br><small>Prevents ice build-up in sub-zero ops<\/small><\/div><\/div>\r\n            <div class=\"grid-card pro-card\" data-code=\"JACKET\"><div class=\"card-code\">JACKET<\/div><div class=\"card-desc\">Heating \/ Cooling Jacket<br><small>For heavy viscous or liquid gas media<\/small><\/div><\/div>\r\n            <div class=\"grid-card\" data-code=\"NONE\"><div class=\"card-code\">NONE<\/div><div class=\"card-desc\">No Special Accessories<\/div><\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 10 (NEW ROW 1) -->\r\n    <div class=\"matrix-step-block profile-block\" data-step=\"10\">\r\n        <div class=\"step-badge profile-badge\">STEP 10<\/div>\r\n        <div class=\"step-header-text\">Purchase Quantity & Project Type<\/div>\r\n        <div class=\"profile-input-wrapper\">\r\n            <input type=\"text\" id=\"input-step-10\" class=\"profile-input-field\" placeholder=\"Purchase Quantity & Project Type (e.g., 32 Sets \/ High-Pressure Steam Boiler Project)\">\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- STEP 11 (NEW ROW 2) -->\r\n    <div class=\"matrix-step-block profile-block\" data-step=\"11\">\r\n        <div class=\"step-badge profile-badge\">STEP 11<\/div>\r\n        <div class=\"step-header-text\">Factory Certification Requirements<\/div>\r\n        <div class=\"profile-input-wrapper\">\r\n            <input type=\"text\" id=\"input-step-11\" class=\"profile-input-field\" placeholder=\"Factory Certification Requirements (e.g., ATEX, PED 2014\/68\/EU, NACE MR0175, EN 10204 3.1 Material Cert, Hydrostatic Test)\">\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- FINAL BUILDER BAR -->\r\n    <div class=\"final-builder-container\">\r\n        <div class=\"builder-title-bar\">Dynamic Sight Glass Spec Code Output<\/div>\r\n        <div class=\"builder-matrix-display\" id=\"final-code-output\">\r\n            SGG \u2014 <span class=\"b-box\" data-out=\"1\">[1]<\/span> \u2014 <span class=\"b-box\" data-out=\"2\">[2]<\/span> \u2014 <span class=\"b-box\" data-out=\"3\">[3]<\/span> \u2014 <span class=\"b-box\" data-out=\"4\">[4]<\/span> \u2014 <span class=\"b-box\" data-out=\"5\">[5]<\/span> \u2014 <span class=\"b-box\" data-out=\"6\">[6]<\/span> \u2014 <span class=\"b-box\" data-out=\"7\">[7]<\/span> \u2014 <span class=\"b-box\" data-out=\"8\">[8]<\/span> \u2014 <span class=\"b-box\" data-out=\"9\">[9]<\/span>\r\n        <\/div>\r\n    <\/div>\r\n\r\n   <!-- INTERACTIVE INQUIRY FORM SECTION -->\r\n    <div class=\"inquiry-form-container\">\r\n        <div class=\"form-header\">\r\n            <h3>Request Official B2B Engineering Quotation<\/h3>\r\n            <p>Selecting items in the spec matrix above will auto-generate your detailed engineering payload below.<\/p>\r\n        <\/div>\r\n        <form id=\"matrix-b2b-inquiry-form\" onsubmit=\"return handleFormSubmit(event)\">\r\n            <div class=\"form-grid\">\r\n                <div class=\"form-group\">\r\n                    <label class=\"form-label\">Country \/ Region <span class=\"req\">*<\/span><\/label>\r\n                    <input type=\"text\" id=\"form-country\" name=\"country\" class=\"form-input\" required placeholder=\"e.g., United Arab Emirates\">\r\n                <\/div>\r\n                <div class=\"form-group\">\r\n                    <label class=\"form-label\">Business Contact \/ WhatsApp <span class=\"req\">*<\/span><\/label>\r\n                    <input type=\"tel\" id=\"form-phone\" name=\"phone\" class=\"form-input\" required placeholder=\"e.g., +971 50 XXXXXXX\">\r\n                <\/div>\r\n                <div class=\"form-group group-full\">\r\n                    <label class=\"form-label\">Corporate Email <span class=\"req\">*<\/span><\/label>\r\n                    <input type=\"email\" id=\"form-email\" name=\"email\" class=\"form-input\" required placeholder=\"procurement@company.com\">\r\n                <\/div>\r\n                \r\n                <div class=\"form-group\" style=\"margin-bottom: 15px;\">\r\n    <label for=\"form-attachment\" style=\"display:block; font-weight:600; margin-bottom:5px;\">\r\n        Upload Project Specifications \/ Drawings (Optional):\r\n    <\/label>\r\n    <input \r\n        type=\"file\" \r\n        id=\"form-attachment\" \r\n        name=\"attachment\" \r\n        class=\"form-control-file\" \r\n        accept=\".pdf,.doc,.docx,.xls,.xlsx,.png,.jpg,.jpeg,.zip,.rar\"\r\n    >\r\n    <small style=\"display:block; color:#64748b; margin-top:5px; font-size:12px;\">\r\n        Supported Formats: PDF, Word, Excel, Images (JPG\/PNG), ZIP, RAR (Max 20MB).\r\n    <\/small>\r\n<\/div>\r\n                \r\n                <div class=\"form-group group-full\">\r\n                    <label class=\"form-label\">Automated Specification Payload Message <span class=\"req\">*<\/span><\/label>\r\n                    <textarea id=\"form-message\" name=\"message\" class=\"form-textarea\" required placeholder=\"Selecting items inside the matrix will structure your quote automatically...\"><\/textarea>\r\n                <\/div>\r\n            <\/div>\r\n            <!-- Cloudflare Turnstile \u9a8c\u8bc1\u7801\u5bb9\u5668 -->\r\n            <div class=\"cf-turnstile\" data-sitekey=\"0x4AAAAAACz0Sbc-nOgYqyxY\" style=\"margin-bottom: 15px; display: flex; justify-content: center;\"><\/div>\r\n            \r\n            <!-- \u5173\u952e\u5bf9\u63a5\u6838\u5fc3\uff1a\u5b8c\u7f8e\u5339\u914d\u540e\u7aef\u7684 Action \u94a9\u5b50\u540d\u79f0 -->\r\n            <input type=\"hidden\" name=\"action\" value=\"contact_form\">\r\n            \r\n            <button type=\"submit\" id=\"matrix-submit-btn\" class=\"matrix-submit-btn\">Lock Matrix Configuration & Send Inquiry<\/button>\r\n        <\/form>\r\n        <div id=\"matrixFormResult\" style=\"margin-top: 15px; text-align: center; font-weight: bold; min-height: 24px;\"><\/div>\r\n    <\/div>\r\n<\/div>\r\n\r\n<script>\r\ndocument.addEventListener(\"DOMContentLoaded\", function() {\r\n    \/\/ 1. \u6838\u5fc3\u9009\u62e9\u72b6\u6001\u6570\u636e\u6a21\u578b\uff08Step 1 ~ Step 11\uff09\r\n    const selectionState = {\r\n        1: null, 2: null, 3: null, 4: null, 5: null, 6: null,\r\n        7: null, 8: null, 9: null, 10: null, 11: null\r\n    };\r\n    \r\n    let clientProfile = \"\";\r\n    let step5DetailText = \"\"; \/\/ Step 5 \u6cd5\u5170\/\u87ba\u7eb9\u5177\u4f53\u89c4\u683c\u8865\u5145\r\n\r\n    \/\/ 2. \u7f51\u683c\u5361\u7247\u70b9\u51fb\u9009\u62e9\uff08\u5bf9\u5e94 HTML \u91cc\u7684\u5361\u7247 Step: 1, 2, 3, 4, 5, 6, 8, 9\uff09\r\n    const stepsWithCards = [1, 2, 3, 4, 5, 6, 8, 9];\r\n    \r\n    stepsWithCards.forEach(step => {\r\n        const stepBlock = document.querySelector(`.matrix-step-block[data-step=\"${step}\"]`);\r\n        if (!stepBlock) return;\r\n        \r\n        const cards = stepBlock.querySelectorAll('.grid-card');\r\n        cards.forEach(card => {\r\n            card.addEventListener('click', function() {\r\n                const code = this.getAttribute('data-code');\r\n                \r\n                if (this.classList.contains('card-selected')) {\r\n                    this.classList.remove('card-selected');\r\n                    selectionState[step] = null;\r\n                } else {\r\n                    cards.forEach(c => c.classList.remove('card-selected'));\r\n                    this.classList.add('card-selected');\r\n                    selectionState[step] = code;\r\n                }\r\n                updateAllOutputs();\r\n            });\r\n        });\r\n    });\r\n\r\n    \/\/ 3. \u7ed1\u5b9a\u6240\u6709\u6587\u672c\/\u6570\u5b57\u8f93\u5165\u6846\r\n    \/\/ Client Profile\r\n    const profileInput = document.getElementById('client-profile-input');\r\n    if (profileInput) {\r\n        profileInput.addEventListener('input', function() {\r\n            clientProfile = this.value.trim();\r\n            updateAllOutputs();\r\n        });\r\n    }\r\n\r\n    \/\/ Step 5 Connection Detail\r\n    const input5Detail = document.getElementById('input-step-5-detail');\r\n    if (input5Detail) {\r\n        input5Detail.addEventListener('input', function() {\r\n            step5DetailText = this.value.trim();\r\n            updateAllOutputs();\r\n        });\r\n    }\r\n\r\n    \/\/ Step 7 C-C Distance (mm)\r\n    const input7 = document.getElementById('input-step-7');\r\n    if (input7) {\r\n        input7.addEventListener('input', function() {\r\n            const val = this.value.trim();\r\n            selectionState[7] = val !== \"\" ? val : null;\r\n            updateAllOutputs();\r\n        });\r\n    }\r\n\r\n    \/\/ Step 10 Purchase Quantity & Project Type\r\n    const input10 = document.getElementById('input-step-10');\r\n    if (input10) {\r\n        input10.addEventListener('input', function() {\r\n            const val = this.value.trim();\r\n            selectionState[10] = val !== \"\" ? val : null;\r\n            updateAllOutputs();\r\n        });\r\n    }\r\n\r\n    \/\/ Step 11 Factory Certification Requirements\r\n    const input11 = document.getElementById('input-step-11');\r\n    if (input11) {\r\n        input11.addEventListener('input', function() {\r\n            const val = this.value.trim();\r\n            selectionState[11] = val !== \"\" ? val : null;\r\n            updateAllOutputs();\r\n        });\r\n    }\r\n\r\n    \/\/ Target Country\r\n    const countryInput = document.getElementById('form-country');\r\n    if (countryInput) {\r\n        countryInput.addEventListener('input', updateAllOutputs);\r\n    }\r\n\r\n    \/\/ 4. \u5b9e\u65f6\u8ba1\u7b97\u4e0e\u62fc\u63a5\u6838\u5fc3\u5f15\u64ce\r\n    function updateAllOutputs() {\r\n        \/\/ --- \u6e32\u67d3 Step 1~9 \u5e95\u90e8\u7684 Dynamic Output \u9884\u89c8\u6846 ---\r\n        for (let step = 1; step <= 9; step++) {\r\n            const outBox = document.querySelector(`.b-box[data-out=\"${step}\"]`);\r\n            if (!outBox) continue;\r\n\r\n            if (step === 5) {\r\n                \/\/ Step 5 \u7279\u6b8a\u5904\u7406\uff1a\u8fde\u63a5\u6837\u5f0f + \u5177\u4f53\u5c3a\u5bf8\r\n                if (selectionState[5] !== null) {\r\n                    let s5Display = selectionState[5];\r\n                    if (step5DetailText !== \"\") s5Display += `(${step5DetailText})`;\r\n                    outBox.textContent = s5Display;\r\n                    outBox.classList.add('b-box-active');\r\n                } else {\r\n                    outBox.textContent = step5DetailText ? `[5](${step5DetailText})` : \"[5]\";\r\n                    if (step5DetailText) outBox.classList.add('b-box-active');\r\n                    else outBox.classList.remove('b-box-active');\r\n                }\r\n            } else if (step === 7) {\r\n                \/\/ Step 7 \u4e2d\u5fc3\u8ddd (mm)\r\n                if (selectionState[7] !== null) {\r\n                    outBox.textContent = selectionState[7] + \"mm\";\r\n                    outBox.classList.add('b-box-active');\r\n                } else {\r\n                    outBox.textContent = \"[7]mm\";\r\n                    outBox.classList.remove('b-box-active');\r\n                }\r\n            } else {\r\n                \/\/ \u901a\u7528 Step (1, 2, 3, 4, 6, 8, 9)\r\n                if (selectionState[step] !== null) {\r\n                    outBox.textContent = selectionState[step];\r\n                    outBox.classList.add('b-box-active');\r\n                } else {\r\n                    outBox.textContent = `[${step}]`;\r\n                    outBox.classList.remove('b-box-active');\r\n                }\r\n            }\r\n        }\r\n\r\n        \/\/ --- \u91cd\u65b0\u7ec4\u88c5\u89c4\u683c\u4ee3\u7801 SGG \u2014 ... ---\r\n        let codeParts = [];\r\n        for (let s = 1; s <= 9; s++) {\r\n            if (s === 5) {\r\n                let v5 = selectionState[5] ? selectionState[5] : \"[5]\";\r\n                if (step5DetailText) v5 += `(${step5DetailText})`;\r\n                codeParts.push(v5);\r\n            } else if (s === 7) {\r\n                codeParts.push(selectionState[7] ? selectionState[7] + \"mm\" : \"[7]\");\r\n            } else {\r\n                codeParts.push(selectionState[s] ? selectionState[s] : `[${s}]`);\r\n            }\r\n        }\r\n\r\n        const generatedFullCode = \"SGG \u2014 \" + codeParts.join(\" \u2014 \");\r\n\r\n        \/\/ --- \u586b\u5145 Payload \u4fe1\u606f\u81f3 Textarea ---\r\n        const msgTextArea = document.getElementById('form-message');\r\n        if (msgTextArea) {\r\n            const currentCountry = document.getElementById('form-country') ? document.getElementById('form-country').value.trim() : '';\r\n            \r\n            let structuredMessage = `Dear Sales Engineering,\\n\\nWe have configured a Sight Glass Level Gauge profile via your Interactive Ordering Matrix. Technical parameters are specified below:\\n`;\r\n            structuredMessage += `--------------------------------------------------\\n`;\r\n            structuredMessage += `* Target Country \/ Region: ${currentCountry ? currentCountry : '(Not specified)'}\\n`;\r\n            structuredMessage += `* Client Profile & Industry: ${clientProfile ? clientProfile : '(Not provided)'}\\n`;\r\n            structuredMessage += `* Configured Model Code: ${generatedFullCode}\\n`;\r\n            structuredMessage += `* Gauge Type (1): ${selectionState[1] ? selectionState[1] : '(Not selected)'}\\n`;\r\n            structuredMessage += `* Pressure Rating (2): ${selectionState[2] ? selectionState[2] : '(Not selected)'}\\n`;\r\n            structuredMessage += `* Wetted Material (3): ${selectionState[3] ? selectionState[3] : '(Not selected)'}\\n`;\r\n            structuredMessage += `* Glass & Shield (4): ${selectionState[4] ? selectionState[4] : '(Not selected)'}\\n`;\r\n            structuredMessage += `* Process Connection (5): ${selectionState[5] ? selectionState[5] : ''} ${step5DetailText ? '[' + step5DetailText + ']' : '(Not specified)'}\\n`;\r\n            structuredMessage += `* Operating Temp (6): ${selectionState[6] ? selectionState[6] : '(Not selected)'}\\n`;\r\n            structuredMessage += `* C-C Distance (7): ${selectionState[7] ? selectionState[7] + ' mm' : '(Not specified)'}\\n`;\r\n            structuredMessage += `* Valve & Safety (8): ${selectionState[8] ? selectionState[8] : '(Not selected)'}\\n`;\r\n            structuredMessage += `* Illuminator & Accessories (9): ${selectionState[9] ? selectionState[9] : '(None)'}\\n`;\r\n            structuredMessage += `* Purchase Qty & Project (10): ${selectionState[10] ? selectionState[10] : '(Not provided)'}\\n`;\r\n            structuredMessage += `* Factory Certifications (11): ${selectionState[11] ? selectionState[11] : '(Standard)'}\\n`;\r\n            structuredMessage += `--------------------------------------------------\\n`;\r\n            structuredMessage += `Please review the specifications, confirm technical feasibility, and send us a formal B2B price quotation.`;\r\n            \r\n            msgTextArea.value = structuredMessage;\r\n        }\r\n    }\r\n\r\n    updateAllOutputs();\r\n\r\n    \/\/ ===================================================\r\n    \/\/ \ud83d\udd25 AJAX \u5f02\u6b65\u8868\u5355\u53d1\u9001\uff08\u53cc\u91cd\u5f3a\u884c\u6821\u9a8c\u4e0e\u88c5\u8f7d\uff09\r\n    \/\/ ===================================================\r\n    const form = document.getElementById('matrix-b2b-inquiry-form');\r\n    \/\/ \u5982\u679c\u9875\u9762\u6309\u94ae\u6ca1\u52a0 ID\uff0c\u81ea\u52a8\u67e5\u627e form \u91cc\u7684 submit \u6309\u94ae\r\n    let submitBtn = document.getElementById('matrix-submit-btn') || (form ? form.querySelector('button[type=\"submit\"]') : null);\r\n    \r\n    \/\/ \u5982\u679c\u9875\u9762\u6ca1\u6709\u4e13\u7528\u7684\u6d88\u606f\u63d0\u793a\u6846\u5668\uff0c\u81ea\u52a8\u751f\u6210\u4e00\u4e2a\u6302\u5728\u6309\u94ae\u4e0b\u65b9\r\n    let resultDiv = document.getElementById('matrixFormResult');\r\n    if (!resultDiv && form) {\r\n        resultDiv = document.createElement('div');\r\n        resultDiv.id = 'matrixFormResult';\r\n        resultDiv.style.cssText = 'margin-top: 15px; font-weight: 600; font-size: 14px; text-align: center; min-height: 20px;';\r\n        form.appendChild(resultDiv);\r\n    }\r\n\r\n    if (form) {\r\n        form.addEventListener('submit', function(e) {\r\n            e.preventDefault();\r\n\r\n            updateAllOutputs();\r\n\r\n            \/\/ \u6293\u53d6\u5e76\u6821\u9a8c\u57fa\u7840\u5b57\u6bb5\u503c\r\n            const emailVal = document.getElementById('form-email') ? document.getElementById('form-email').value.trim() : '';\r\n            const phoneVal = document.getElementById('form-phone') ? document.getElementById('form-phone').value.trim() : '';\r\n            const messageVal = document.getElementById('form-message') ? document.getElementById('form-message').value.trim() : '';\r\n\r\n            if (!emailVal || !phoneVal || !messageVal) {\r\n                if (resultDiv) {\r\n                    resultDiv.style.color = '#ef4444';\r\n                    resultDiv.textContent = '\u274c Please fill out all required contact details (Email, Phone, and Payload Message).';\r\n                }\r\n                return;\r\n            }\r\n\r\n            if (submitBtn) {\r\n                submitBtn.disabled = true;\r\n                submitBtn.textContent = 'Sending Technical Inquiry...';\r\n            }\r\n            if (resultDiv) {\r\n                resultDiv.style.color = '#64748b';\r\n                resultDiv.textContent = '\ud83d\udd04 Processing your configuration matrix...';\r\n            }\r\n\r\n            \/\/ \u5b9e\u4f8b\u5316 FormData \u5e76\u663e\u5f0f\u8865\u9f50\u540e\u7aef\u8981\u6c42\u7684\u6240\u6709\u952e\u503c\u5bf9\r\n            const formData = new FormData(form);\r\n\r\n            \/\/ 1. \u786e\u4fdd action \u94a9\u5b50\u6b63\u786e\r\n            formData.set('action', 'contact_form');\r\n\r\n            \/\/ 2. \u8865\u5168 name\uff08\u540e\u7aef\u8981\u6c42\u975e\u7a7a\uff09\r\n            const inferredName = clientProfile ? clientProfile : \"B2B Site Inquiry\";\r\n            formData.set('name', inferredName);\r\n\r\n            \/\/ 3. \u663e\u5f0f\u8986\u76d6\u6253\u5305\uff0c\u786e\u4fdd\u540e\u7aef 100% \u63a5\u6536\u5230 email, phone, message\r\n            formData.set('email', emailVal);\r\n            formData.set('phone', phoneVal);\r\n            formData.set('message', messageVal);\r\n\r\n            if (document.getElementById('form-country')) {\r\n                formData.set('country', document.getElementById('form-country').value.trim());\r\n            }\r\n\r\n            fetch('\/wp-admin\/admin-ajax.php', {\r\n                method: 'POST',\r\n                body: formData\r\n            })\r\n            .then(response => {\r\n                if (!response.ok) {\r\n                    throw new Error('SERVER_HTTP_ERROR_' + response.status);\r\n                }\r\n                return response.text();\r\n            })\r\n            .then(text => {\r\n                if (submitBtn) {\r\n                    submitBtn.disabled = false;\r\n                    submitBtn.textContent = 'Lock Technical Matrix & Send Formal Inquiry';\r\n                }\r\n\r\n                const responseStatus = text.trim();\r\n                console.log(\"Backend Response Trace:\", responseStatus);\r\n\r\n                if (responseStatus === \"MAIL_SENT\") {\r\n                    if (resultDiv) {\r\n                        resultDiv.style.color = '#10b981';\r\n                        resultDiv.textContent = '\u2705 Lock Successful! Your configuration and inquiry have been sent. Our sales engineering team will reach out shortly.';\r\n                    }\r\n                    form.reset();\r\n                    if (typeof turnstile !== \"undefined\") turnstile.reset();\r\n                    \r\n                    \/\/ \u91cd\u7f6e\u77e9\u9635\u9009\u4e2d\u72b6\u6001\r\n                    for (let k in selectionState) selectionState[k] = null;\r\n                    clientProfile = \"\"; step5DetailText = \"\";\r\n                    document.querySelectorAll('.grid-card.card-selected').forEach(c => c.classList.remove('card-selected'));\r\n                    updateAllOutputs();\r\n                    return;\r\n                }\r\n\r\n                if (responseStatus === \"REQUIRED_FIELDS_MISSING\") {\r\n                    if (resultDiv) {\r\n                        resultDiv.style.color = '#ef4444';\r\n                        resultDiv.textContent = '\u274c Form Error: Required payload fields are missing. Please check your contact information.';\r\n                    }\r\n                    return;\r\n                }\r\n\r\n                if (responseStatus === \"NO_TURNSTILE_TOKEN\") {\r\n                    if (resultDiv) {\r\n                        resultDiv.style.color = '#ef4444';\r\n                        resultDiv.textContent = '\u274c Security Error: Verification token missing. Please refresh the page.';\r\n                    }\r\n                    return;\r\n                }\r\n\r\n                if (responseStatus === \"TURNSTILE_FAILED\") {\r\n                    if (resultDiv) {\r\n                        resultDiv.style.color = '#ef4444';\r\n                        resultDiv.textContent = '\u274c Security Verification Failed: Please complete the Cloudflare Turnstile checkbox.';\r\n                    }\r\n                    if (typeof turnstile !== \"undefined\") turnstile.reset();\r\n                    return;\r\n                }\r\n\r\n                if (responseStatus === \"MAIL_FAILED\") {\r\n                    if (resultDiv) {\r\n                        resultDiv.style.color = '#ef4444';\r\n                        resultDiv.textContent = '\u274c System Error: Server failed to deliver email. Please contact us directly at info@instrava.com.';\r\n                    }\r\n                    return;\r\n                }\r\n\r\n                if (resultDiv) {\r\n                    resultDiv.style.color = '#ef4444';\r\n                    resultDiv.textContent = '\u274c System Notice: Send execution completed with status: ' + responseStatus;\r\n                }\r\n            })\r\n            .catch(error => {\r\n                if (submitBtn) {\r\n                    submitBtn.disabled = false;\r\n                    submitBtn.textContent = 'Lock Technical Matrix & Send Formal Inquiry';\r\n                }\r\n                if (resultDiv) {\r\n                    resultDiv.style.color = '#ef4444';\r\n                    resultDiv.textContent = '\u274c Transmission Interrupted: Network error or server unavailable.';\r\n                }\r\n                console.error('AJAX Error:', error);\r\n            });\r\n        });\r\n    }\r\n});\r\n<\/script>\r\n\r\n<style>\r\n    .instrava-spec-container {\r\n        font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\r\n        background-color: #f8fafc;\r\n        padding: 30px;\r\n        border-radius: 12px;\r\n        max-width: 1382px;\r\n        margin: 20px auto;\r\n        color: #1e293b;\r\n        box-shadow: 0 10px 30px -5px rgba(0,0,0,0.05);\r\n    }\r\n    .matrix-header { border-bottom: 2px solid #e2e8f0; 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border-color: #10b981 !important; box-shadow: 0 0 10px rgba(16, 185, 129, 0.4); }\r\n    \r\n    .inquiry-form-container {\r\n        margin-top: 40px; background: #ffffff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 30px;\r\n        box-shadow: 0 4px 20px rgba(0,0,0,0.02);\r\n    }\r\n    .form-header { border-bottom: 1px solid #f1f5f9; padding-bottom: 15px; margin-bottom: 25px; }\r\n    .form-header h3 { font-size: 18px; color: #0f172a; font-weight: 800; margin: 0; }\r\n    .form-header p { font-size: 13px; color: #64748b; margin: 6px 0 0 0; }\r\n    \r\n    .form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }\r\n    .group-full { grid-column: span 2; }\r\n    .form-group { display: flex; flex-direction: column; }\r\n    .form-label { font-size: 13px; font-weight: 700; color: #334155; margin-bottom: 8px; }\r\n    .form-label .req { color: #ef4444; margin-left: 2px; }\r\n    \r\n    .form-input {\r\n        padding: 10px 14px; border: 1px solid #cbd5e1; border-radius: 6px; font-size: 14px;\r\n        transition: all 0.2s ease; background-color: #fff; box-sizing: border-box; height: auto !important; margin: 0 !important;\r\n    }\r\n    .form-input:focus { border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12); outline: none; }\r\n    \r\n    .form-textarea {\r\n        padding: 12px 14px; border: 1px solid #cbd5e1; border-radius: 6px; font-size: 13px; font-family: \"Courier New\", Courier, monospace;\r\n        min-height: 165px; resize: vertical; line-height: 1.5; background: #f8fafc; color: #334155; box-sizing: border-box; margin: 0 !important;\r\n    }\r\n    .form-textarea:focus { border-color: #2563eb; background: #ffffff; outline: none; }\r\n    \r\n    .matrix-submit-btn {\r\n        margin-top: 25px; width: 100%; background: #2563eb; color: #ffffff; font-size: 15px; font-weight: 700;\r\n        padding: 14px; border: none; border-radius: 6px; cursor: pointer; transition: background 0.2s ease;\r\n        box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.15);\r\n    }\r\n    .matrix-submit-btn:hover { background: #1d4ed8; }\r\n    \r\n    @media screen and (max-width: 1000px) {\r\n        .matrix-grid { grid-template-columns: repeat(3, 1fr) !important; }\r\n    }\r\n    @media screen and (max-width: 650px) {\r\n        .matrix-grid { grid-template-columns: repeat(2, 1fr) !important; }\r\n        .form-grid { grid-template-columns: 1fr !important; }\r\n        .group-full { grid-column: span 1; }\r\n        .range-input-container { flex-direction: column; align-items: flex-start; gap: 8px; }\r\n    }\r\n<\/style>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-a43f7a5 e-flex e-con-boxed e-con e-parent\" data-id=\"a43f7a5\" data-element_type=\"container\" data-e-type=\"container\" id=\"sight-glass-gauges-faq\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-678d7de elementor-widget elementor-widget-heading\" data-id=\"678d7de\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ For Purchasing Sight Glass Gauges<\/h2>\t\t\t\t<\/div>\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-7a0f24f elementor-widget elementor-widget-n-accordion\" data-id=\"7a0f24f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1270\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1270\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is the process for purchasing sight glass gauges: reflex, transparent, tubular, bi-color from Instrava supplier\uff1f <\/div><\/span>\n\t\t\t\t\t\t\t\t\t<\/summary>\n\t\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-088c78e e-con-full e-flex e-con e-child\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1270\" data-id=\"088c78e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-01af0a1 elementor-widget elementor-widget-text-editor\" data-id=\"01af0a1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>1. Inquiry (We will respond to your inquiry within 24 hours to confirm specifications and initiate the process.)<\/p><p>2. Quotation (Quotation timelines vary based on the project type and your specific requirements. Standard stock items are quoted within one day, while special orders require three days or a mutually agreed-upon timeframe.)<\/p><p>3. Product Selection (We will present 3\u20135 product options and pricing for your approval. During this stage, we verify the manufacturer&#8217;s production capabilities and relevant national certifications.)<\/p><p>4. Contract, Prepayment, and Production (A 40% prepayment is required to initiate production at a qualified facility. For stock items, we promptly arrange for product testing and packaging.)<\/p><p>5. Interim Payment (Upon successful completion of production and quality inspection, the next 50% of the total amount is due. For stock items, this payment is made after packaging is complete.If the transaction amount does not exceed $50,000, the remaining 60% is paid.)<\/p><p>6. Shipment (You may designate a freight forwarder, or we can arrange shipping for you.)<\/p><p>7. Receipt of Goods (Our Quality Guarantee: When your cumulative order value reaches $50,000, you pay the remaining 10% only after receiving and verifying the product quality. We let our quality do the talking.)<\/p><p>8. After-Sales Service (We actively address and resolve issues through both online and offline channels. We place great importance on after-sales support, as it reflects our responsibility and reputation\u2014the foundation of Instrava\u2019s long-term growth.)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1271\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1271\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What are the advantages of buying products from Instrava ? <\/div><\/span>\n\t\t\t\t\t\t\t\t\t<\/summary>\n\t\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-6d89449 e-con-full e-flex e-con e-child\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1271\" data-id=\"6d89449\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-6106735 elementor-widget elementor-widget-text-editor\" data-id=\"6106735\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Buying from Instrava gives you the best of both worlds\u2014the direct-from-source pricing of a factory, combined with the professional service, product range, and risk mitigation of an elite sourcing partner. Here is how we deliver value to your business:<\/p><p>Unbiased Market Curation (More Choices &amp; Better Prices): Unlike single factories that only praise their own capacity, or traditional trading companies restricted by personal connection networks, we evaluate the entire Chinese manufacturing landscape. We benchmark and source from multiple verified factories to secure the most competitive pricing and the exact product specifications you need.<\/p><p>100% Transparency (Your &#8220;Brain&#8221; in China): We never hide behind the veil of being a &#8220;fake manufacturer.&#8221; We act as your transparent, in-country purchasing department. You always know exactly who is producing your goods, how much they cost, and what the real lead times are.<\/p><p>Uncompromised Quality &amp; Risk Mitigation: Our business is built on long-term partnerships, not one-off high-profit transactions. We perform strict, independent quality control from your perspective before shipment, protecting you from post-purchase defects and communication breakdowns.<\/p><p>Streamlined Communication &amp; Service: No more dealing with slow, production-centric factory service. We provide a single, highly responsive point of contact that manages the entire supply chain\u2014from negotiation and quality checks to shipping logistics\u2014saving you time and reducing headaches.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1272\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1272\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What types of industrial automation instruments products can you purchase from Instrava? <\/div><\/span>\n\t\t\t\t\t\t\t\t\t<\/summary>\n\t\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-a205d59 e-con-full e-flex e-con e-child\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1272\" data-id=\"a205d59\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-d6324ff elementor-widget elementor-widget-text-editor\" data-id=\"d6324ff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Level gauge, flowmeter, transmitter, level switch, Gas Alarm Controllers etc.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1273\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1273\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> How to ensure the reliability of the purchased products? <\/div><\/span>\n\t\t\t\t\t\t\t\t\t<\/summary>\n\t\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-6c5419f e-con-full e-flex e-con e-child\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1273\" data-id=\"6c5419f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-8e07a22 elementor-widget elementor-widget-text-editor\" data-id=\"8e07a22\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Our customer-centric philosophy prioritizes their procurement needs.<\/p><p>1. Initially confirm the manufacturer based on product pricing and the strength and qualifications of the production factory.<\/p><p>2. Verify the manufacturer&#8217;s production environment through video and on-site inspections to check the compliance of the entire product manufacturing process.<\/p><p>3. Ensure post-production product testing and retain data and video evidence from the verification process(testing and verification methods vary depending on the product).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1274\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1274\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> How does Instrava ensure product protection and physical safety during cross-border shipping? <\/div><\/span>\n\t\t\t\t\t\t\t\t\t<\/summary>\n\t\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-231ccb6 e-con-full e-flex e-con e-child\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1274\" data-id=\"231ccb6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-85a1fdb elementor-widget elementor-widget-text-editor\" data-id=\"85a1fdb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Firstly, we confirm the packaged products with the factory (different products require different packaging and shipping methods. Heavy equipment and bulk shipments are securely secured within sea freight containers using custom-designed engineering steel frames, heavy-duty multi-layer wooden crates, and industrial-grade vacuum rust-proof bags. Precision instruments are protected against impacts and maintained in a stable position; the factory has extensive experience in this area. Custom labels are affixed to the outer packaging).<\/p><p>Secondly, we maintain communication with the freight company to confirm the condition of the goods and advise them to handle the loading and unloading processes with care.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1275\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"6\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1275\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What warranty policies and after-sales technical support does Instrava offer to international customers? <\/div><\/span>\n\t\t\t\t\t\t\t\t\t<\/summary>\n\t\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-b85b649 e-con-full e-flex e-con e-child\" role=\"region\" aria-labelledby=\"e-n-accordion-item-1275\" data-id=\"b85b649\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-5018c36 elementor-widget elementor-widget-text-editor\" data-id=\"5018c36\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>1. Instrava offers a comprehensive 12 to 24-month warranty (specific warranty period depends on the product line), covering all manufacturing and component defects.<\/p><p>2. When online technical support is needed, customers can connect with factory engineers online. Real-time guidance is provided for installation, on-site calibration (for instruments), and commissioning. When on-site engineer support is needed, we will arrange for an engineer to visit the site.<\/p><p>3. In the event of component issues, we will ship replacement parts via international express delivery (DHL\/FedEx) to minimize your project downtime.<\/p><p>4. Whether a product requires replacement or repair will be clearly stated in the purchase contract.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-7e0c017 e-flex e-con-boxed e-con e-parent\" data-id=\"7e0c017\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-cf611f6 elementor-grid-1 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-widget elementor-widget-loop-grid\" data-id=\"cf611f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;template_id&quot;:&quot;37181&quot;,&quot;columns&quot;:1,&quot;_skin&quot;:&quot;post&quot;,&quot;columns_tablet&quot;:&quot;2&quot;,&quot;columns_mobile&quot;:&quot;1&quot;,&quot;edit_handle_selector&quot;:&quot;[data-elementor-type=\\&quot;loop-item\\&quot;]&quot;,&quot;row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;row_gap_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;row_gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;row_gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"loop-grid.post\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-loop-container elementor-grid\" role=\"list\">\n\t\t<style id=\"loop-37181\">.elementor-37181 .elementor-element.elementor-element-c257b85{--display:flex;--flex-direction:row;--container-widget-width:calc( ( 1 - var( --container-widget-flex-grow ) ) * 100% );--container-widget-height:100%;--container-widget-flex-grow:1;--container-widget-align-self:stretch;--flex-wrap-mobile:wrap;--align-items:center;--margin-top:0px;--margin-bottom:80px;--margin-left:0px;--margin-right:0px;}.elementor-37181 .elementor-element.elementor-element-46f7d79{--display:flex;}.elementor-37181 .elementor-element.elementor-element-12087f8 img{width:100%;border-radius:18px 18px 18px 18px;}@media(max-width:1024px){.elementor-37181 .elementor-element.elementor-element-c257b85{--flex-direction:column;--container-widget-width:100%;--container-widget-height:initial;--container-widget-flex-grow:0;--container-widget-align-self:initial;--flex-wrap-mobile:wrap;}}<\/style>\t\t<div data-elementor-type=\"loop-item\" data-elementor-id=\"37181\" class=\"elementor elementor-37181 e-loop-item e-loop-item-37794 post-37794 post type-post status-publish format-standard has-post-thumbnail hentry category-ai-data-center-solutions\" data-elementor-post-type=\"elementor_library\" data-custom-edit-handle=\"1\">\n\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-c257b85 e-flex e-con-boxed e-con e-parent\" data-id=\"c257b85\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-f624cc7 elementor-widget elementor-widget-text-editor\" data-id=\"f624cc7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><strong>Why Trust Instrava?<\/strong><\/h2><p>We select manufacturers from a neutral, impartial standpoint, always with your best interests in mind.<\/p><p>Our very existence depends on helping you source the products that are the perfect fit for your needs.<\/p><p>Based in China, we are able to conduct on-site inspections of production environments and product quality firsthand.<\/p><p>We help you avoid intermediaries posing as factories.<\/p><p>We facilitate smoother after-sales support, eliminating time zone issues and the delays often associated with dealing directly with factories.<\/p><p>Our multilingual team ensures effective communication.<\/p><p>For a trading startup, every interaction with a client is a precious opportunity\u2014a sign that you are willing to place your trust in us and give us the chance to prove ourselves.<br \/>In the digital age, while information is easily accessible, misconceptions often cloud the trust between people.<\/p><p>Instrava relies entirely on trust; it is our core philosophy and the foundation of our existence in society. It is the fundamental basis for our long-term growth and our commitment to serving the community.<\/p><p>Please place your trust in us.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-46f7d79 e-flex e-con-boxed e-con e-child\" data-id=\"46f7d79\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-12087f8 elementor-widget elementor-widget-image\" data-id=\"12087f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"667\" src=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/06\/instrava-cooperate-e1782991684467.webp\" class=\"attachment-full size-full wp-image-37179\" alt=\"Tandem skydiving jump with parachute deployment above clouds during high-altitude freefall\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Sight Glass Gauges: Reflex, Transparent, Tubular, Bi-Color For China Supplier Your trusted sourcing partner for sight glass gauges in china\u2014quality instruments at competitive prices. Are you overwhelmed by too many conflicting quotes? Are you worried about factory capabilities because tight project deadlines and heavy procurement tasks leave you no time to audit suppliers? Are you&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"parent":29835,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-38926","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Customized Supplier Sight Glass Gauges<\/title>\n<meta name=\"description\" content=\"Instrava: Curated industrial &amp; lab products. Fully customized. 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