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LJ Star Incorporated provides an extensive line of process observation equipment — sight glasses, lights, sanitary fittings, and level gage instrumentation. Product lines include METAGLAS® Safety Sight Windows, Lumiglas® Explosion Proof Lights and Cameras. Visual Flow Indicators, Sight Ports, Sanitary Clamps, Magnetic Level Gages and Gage Glass.

"Where quality... in design, engineering, materials and workmanship... is always a standard feature."
LJ Star is a key partner and supplier to the pharmaceutical, biotech, medical marijuana, food, dairy, oil, and gas industries. We will remain open for business to help support these essential industries while also following all guidelines put forth by the CDC, local, and state health departments. LJ Star and our subsidiaries are already working to fill critical orders which are essential in the Research and Development of COVID-19 vaccines.
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Technical Articles

6 Tips for Critical Sight Glass Applications
(Fittings and Flanges)
Sight glass applications require varying levels of consideration during the design phase. In all applications, sight glasses will be subjected to forces involving pressure, temperature, thermal shock,...
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Analysis of Undiffused and Diffused Light on Stainless Steel
(Fittings and Flanges)
An analysis of why stainless steel appears to have a large number of imperfections under undiffused light but the same steel surface under diffused light does not reveals that diffused light has less...
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