Impellers and Flappers for Sight Flow Indicators

Impellers and flappers are mechanical devices designed to be placed within the fluid flow inside of a sight flow indicator. When the process fluid is in motion, these devices begin to move - allowing visual verification of the presence and speed of flow.

Impellers and flappers are available in various sizes and configurations, and can be included as part of any of our sight flow indicators of any size. (Note that impellers and flappers are built into a sight flow indicator at the time of unit manufacture, and cannot be installed as an aftermarket part)