Air & Water Flow
Air & Liquid Flow Switches A range of paddle switches for air and liquid flow proving in ducts and pipes.
The FS-521 paddle switch is intended to monitor airflow within a duct and provides a switched output on detection of either a specific air velocity or flow failure.See more
The FS-W paddle switch is intended to monitor liquid flow within pipes and provide a VFC output on detection of either a specific flow rate or flow failure. Screws directly into a 1 BSPT bossSee more