LJ Star Inc. | Process Optimization Equipment & Sight Glasses

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Precision in Process...

Safe, innovative and high-quality products in every application, every installation, every single day. Get a copy of our complete catalog to learn more

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New to Sight Glass Selection?

Our 20-page engineering handbook is a great primer for those new to sight glass selection and a handy reference for experienced engineers.

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Need a 3D Rendering?

Explore our 3D CAD Catalog to design and export CAD drawings customized to your unique specifications.

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Discover the
METAGLAS^® Difference!

A borosilicate sight glass fused to a metal ring: METAGLAS^® is the No. 1 selling sight glass around the world.

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Sight Glasses, Sanitary Fittings, and Sight Flow Indicators for
Process Observation from LJ Star Inc.

Sight Glasses

Sight Flow Indicators

Sight Glass Lights | Process Lighting

METAGLAS^® Sight Glass Windows

Sanitary Fittings

Process Vessel Cameras

Magnetic Liquid Level Gauges

Hygienic Bubble Traps

Gauge Glass

Sight Glass Accessories and Light Accessories

Ask an Engineer

Select the right product for your applications. Talk to one of our applications engineers about your process application.

Configure the Part You Need for FREE

Download CAD files to make it simple and easy to spec our products

Resource Center

Data Sheets, White Papers, Videos and Webinars to help select the right product for your application

Industry Solutions

Architect / Engineering Firms

Cannabis Oil Extraction

Pharmaceutical and Biotech Industries

Biogas and Biofuel

Utilities Industry

Demanding Applications Require Exceptional Performance and Reliability

Whiteboard Video: Select the Right Sight Glass

Not every processing plant is the same, so not every sight glass spec should be the same. This video walks through the variousfactors that determine what works best: temperature, pressure, corrosion, glass material and more.

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METAGLAS® Design Guide and Applications Primer

Sight glasses offered by LJ Star are known for their quality and durability, with METAGLAS® the world's #1 selling sight glass. Combine the transparency of glass with the strength of steel for a proven solutions installed in thousands of facilities worldwide.

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Sanitary Fittings Best Practices

Maintain sterile conditions in your processing, while avoiding contamination risks, preventing leaks and fostering workplace safety when handling hazardous process materials. Sanitary fittings play a critical role in optimizing equipment reliability related to observation ports. Find out more in our Best Practices White Paper.

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Sight Glass Lighting Handbook

When vessels and tanks are too dark to see your process, shine some light on the problem with LJ Star LED process lights. Read our handbook to determine how much lighting is required for your application.

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