Introduction


Improperly specified, installed or maintained, sight glasses can easily become the weakest link in a chemical or pharmaceutical processing system.

They may provide less than needed observation capabilities, they may require frequent maintenance and replacement, they may be difficult to illuminate and, in worst case, they may actually fail, endangering workers and causing extensive destruction and downtime.


This is a completely needless circumstance. An understanding of the nature of the various types of glass, the various sight glass design options and materials of construction, and proper maintenance procedures will provide process observation and illumination that will serve and survive through the life of the system.

L.J. Star Incorporated • (330) 405-3040 • www.ljstar.com