Sight Glass

The objective of a sight glass is to provide a window into a pressure vessel, a hot temperature or corrosive process environment, for machine vision or live observation. We offer stock sanitary sight glasses, sight windows for high pressure and high temperature environments for semiconductor reactors, tank sight glasses, oil level siteglass and sight windows for imaging systems. All our sight glasses are offered with downloadable CAD models and are available for purchase online.

 

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ASME Sight Glass
The housing is flanged, conforming to ASME B16.5 standard. Glass is fused into the metal body.
ConFlat, CF - Sight Glass
Conflat sight windows for ultra-high vacuum. Housing is designed to ISO 3699 connections. Glass is fused into the metal body.
Metric Sight Glass
The housing has Metric straight threads. Glass is fused into the metal body.
NPTF Sight Glass
Housing with NPTF (Dryseal) threads. High pressure, high temperature sight glasses with good optical clarity. Ideal for oil & gas applications.
NPT Sight Glass
The housing has NPT threads. High pressure, high temperature sight glasses with optical clarity ranging from just see the colors & light, to excellent, transmitting from IR to UV.
BSW Sight Glass
The housing has British Standard Whitworth straight threads. The glass is fused into the metal body.
Low Cost NPT Sight Glass
Inexpensive guage glass, typically used for quick visual inspection of oil levels or refrigerant color. NPT or NPTF threads. Steel housing, sodalime glass.
Sight Glass Manufacturer
We design and manufacture sight glasses capable of withstanding pressures up to 25,000 psi and temperatures up to 800 C. Transmitted wavelengths from infrared to deep ultraviolet.