Sight Glasses

Inline windows that allow visual confirmation of flow, level and fluid condition without breaking the line.

Specifications shown are indicative ranges. Set your exact size, pressure and material when you add an item to My RFQ.

About sight glasses

A sight glass is an inline fitting with a transparent window that lets an operator confirm flow, level, colour and clarity of a fluid without breaking into the line. Plain, flapper and rotary-wheel patterns give a clear visual indication of whether a line is flowing and in which direction. They are made in cast and stainless steel and bronze with toughened borosilicate glass, in flanged and threaded connections. Provide the bore, pressure and temperature, the medium and the connection for a suitable fitting.

Related guides

Full range · 1 sight glasses