4 Inch Sight Glass with Tri Clamp Ends

The 4-inch tri clamp sight glass is rated for a maximum operating pressure of 150 PSI. This makes it suitable for a wide range of industrial and sanitary process piping applications, including pharmaceutical, food and beverage, and chemical processing lines where reliable pressure performance is critical.

The sight glass is rated for an operating temperature range of -40°C to 500°C (up to 400°F). This broad range accommodates demanding applications including high-temperature sterilization (CIP/SIP) cycles, cryogenic processing, and standard industrial fluid monitoring applications across food, pharma, and chemical industries.

Yes. The borosilicate glass used in these sight glasses complies with FDA 21CFR177.2600 and FDA 21CFR177.1550 regulations. Additionally, the glass material is approved under 3-A Sanitary Standards and USDA requirements, making it fully suitable for pharmaceutical, food-grade, and dairy processing applications.

The sight glass body is constructed from 316 stainless steel with a seamless tri-clamp end cap ferrule, paired with pharmaceutical-grade borosilicate glass. This combination provides excellent corrosion resistance, chemical compatibility, and durability for demanding sanitary process environments including pharmaceutical, biotech, and food production.

The sight glass features a standard tri-clamp end cap design, making it compatible with any standard tri-clamp sanitary clamp, gasket, and ferrule on the market. This ensures easy integration into existing sanitary process piping systems without requiring specialty hardware or custom fittings.

Tri clamp sight glasses are widely used in pharmaceutical and biotech processing lines, food and beverage sanitary piping, chemical and petroleum processing, USDA-regulated dairy facilities, and hemp or cannabis extraction systems. Their sanitary design and compliance with FDA and 3-A standards make them versatile across highly regulated processing industries.