Dwyer flow switches are economical and reliable. Applications include proof of boiler flow, air conditioning, controlling of dampers according to flow, and protecting pumps, motors and other equipment against low or no flow.

Flow includes flow transmitters, flow sensors, flowmeters, sight flow indicators, and water meters. Mass flowmeters, controllers, flow indicators and controllers are ideal for measurement of flow rates. Flow switches come as paddle, thermal, piezo, and shuttle/piston.

The Series V4 Flotect® Flow Switches are rugged and reliable, ideal for automatically protecting equipment and pipeline systems against damage from reduction or loss of flow. Time tested in thousands of pipeline installations and processing plants around the world this Series is Weatherproof, designed to meet NEMA 4 and Explosion-proof ...

Dwyer Flow Switch | MSC Direct offers quality Flow Switches at a great value. Find premium products to last a lifetime!

1/2" NPT Low-Flow Flotect Explosion-Proof Mini-Size Brass SPDT Flow Switch, w/ Brass Tee

The Series V10 Flotect Mini-Size Flow Switches is designed to provide inexpensive, reliable monitoring of the presence or absence of flow in a system. This series is available for field installation in pipelines from 1/2 to 2" diameter and available in brass or 303 SS body.

These switches have a rotating paddle that detects flow and executes programmed functions in response to setpoint conditions, such as turning pumps on or off, opening or closing flow control valves, and sounding alarms in the presence or absence of flow.

The Series V6 Flotect® Flow Switch is surprisingly compact, and specifically engineered to monitor liquid, gas, or air flows. Time tested in thousands of pipeline installations and processing plants around the world, this Series is Weatherproof, designed to meet NEMA 4 and Explosion-proof (listing included in specifications).

Flow Switches. These switches monitor liquid, gas or air flow. They are used to protect pumps, motors, and other equipment against low or no flow, to stop liquid cooled engines when flow is interrupted, and to shut down burners when air flow through heating coils fail. Find a wide selection of switches to fit your application.