LJ Star
Sight Glasses, Visual Flow Indicators, Tank Lights, Sanitary Clamps & Bubble Traps

L.J. 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.

An educational presentation by LJ Star

How to Follow Sanitary Clamp Best Practices

Sight Glasses

The strongest, most secure sight glass elements available, Metaglas®  mechanically prestressed windows, are available in a sanitary design for process applications.

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Visual Flow Indicators

A flow indicator designed to be mounted in-line for high purity applications to provide operators with a clear view of flow of virtually any process pipeline fluid or powder. The sterile-designed flow indicator features an internal-flush style that meets FDA specifications, based on a unique O-ring seal design that minimizes traps where bacteria can buildup. Polished stainless steel connections include sanitary clamp as standard, with butt weld and flange as special order items. Other premium standard features include the use of borosilicate glass, a product contact surface of 220 Grit Electropolish and an armored housing to help protect the glass from external objects and pipe stress.

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Tank Lights & Vessel Lighting

LumiStar3000 is the world’s brightest sight glass luminaire: LED luminaire is four times brighter than a typical sight glass light, offering an unprecedented view of processes. Ultra-bright LED provides 3000 lumens at full brightness, four times the light output than a typical 100-Watt halogen light. The total internal reflection (TIR) lens with 23-degree beam angle, is ideal for vessel illumination through a sight glass with maximum light output and less than 5% loss of light output. The light is capable of continuous operation and emits cool white, 5500K color temperature, optimized for stainless steel vessels. The light is designed for cool operation equipped with temperature-based current limiting and automatic dimming; over temperature shutdown. The LEDs have a long service life and are vibration and impact resistant. No heat radiation is directed into the process vessel (cold light output). The housing is available with a mounting bracket (USL16 Light) or a sanitary clamp connection (USL36 Light).

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Sanitary Clamps

Unlike other sanitary fittings, our ASME Section VIII rated sanitary clamp is recommended by ASME inspectors for pressure vessels, filter housings and many other pressurized applications.

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Bubble Traps

Our sterile bubble traps originated with a request from a customer who could not find a bubble trap suitable for a hygienic pharmaceutical process. Many processes use chromatography that results in by-product gas that must be removed. Our trap provides a sterile, crevice-free, self-draining means of removing unwanted gas and bubbles from process fluids.

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View all of our products

We carry a variety of products that are not featured here.
Please reach out to our experts to learn about the complete list of products we offer.

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