Special Features:

Cage calls this: medium pressure - double window - flanged sight flow indicator; not for vertical down flows; material: body: bronze, flapper: 316 stainless steel; glass: tempered borosilicate, seals: neoprene, rotator: polytetrafluoroethylene.

Properties:

An item so designed to have a portion or all of its body transparent to permit the visual examination of the amount of liquid in a pressure vessel, boiler, evaporator, still, processing tank, reservoir, pipe tubing line, and the like, and/or to determine the flow to a lubricated part. It may also be provided with an element that changes colors to indicate changes in moisture content. The item may have a means for refilling. Excludes indicator, liquid quantity and indicator, rate of flow.