Lumistar Special Glass Technology Co., Ltd.
Robust sight windows for tanks, pressure vessels, reactors and boilers across chemical, petrochemical, pharmaceutical, food & beverage and water-treatment industries.
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The Cryogenic Flanged Sight Glass is designed for ultra-low temperature and cryogenic applications, providing safe and reliable visual inspection in LNG, liquid nitrogen, and other cryogenic process systems. Featuring a robust flanged connection and cryogenic-grade sealing, it ensures stable performance under extreme thermal conditions.
Lumiglas DIN 28120 weld-on vessel sight glass. DN50–DN200, rated
10–16 bar, borosilicate or soda-lime glass. SS flanges, EN 10204-3.1
cert. Custom pressure up to 70 MPa. Request quote →
Industrial high-pressure sight glass with integrated illumination and stainless-steel flange. Ideal for reactors, test rigs, and petrochemical systems. Customizable options available.
Reliable industrial high-pressure sight glass with stainless housing and replaceable borosilicate or sapphire window. Custom options & pressure test reports.
Long sight glass (strip/slot window) for inline inspection. Stainless housings, borosilicate slot glass, flanged and custom lengths. Datasheet & COA available.
Industrial NB/T47017-2011 standard sight glass for pressure vessels. Available in welded (Type A) or flanged (Type B) connections. Supports pressures up to 70MPa.
DIN 28121 pressure vessel sight glass — weld-on circular sight port DN25–DN200. Borosilicate (DIN7080) or soda-lime glass( other material on request ), stainless steel flanges, PN10/25 (higher on request). Download datasheet & request quote.
Rectangular sight glass and rectangular sight windows for inline inspection. Flanged and weld-on options, borosilicate or tempered glass, custom sizes. Datasheet & COA available.
Discover Lumiglas round DIN 28120 weld-on sight glass fittings. Engineered for unpressurized tanks, with standard high-pressure PN10/PN16 models also available.
Sight glass with scraper — stainless-steel scraper mirror for DIN 28120 sight glasses (DN50–DN400). Download datasheet, view specs and order custom sizes.
Lumiglas® sight indicator plug with floating ball level indicator. SAE J1926 compatible, ORFS seal, PS 35 bar / MWP 500 psig. Drop-in replacement for hydraulic & gearbox drain ports. Request a quote.
Lumiglas® weld-on high pressure sight glass with flange. Rated 10–64 bar, DN25–DN200. Borosilicate & safety glass. EN 10204-3.1 cert. DIN 28120 compatible. Request quote →