Built to official York HVAC specifications

While hand-tightening is a start

Integrated Diagnostics: Features onboard LED status indicators to streamline field troubleshooting and verify heat pump defrost cycle operation

Solid State Reliability: Designed with high-quality components to withstand cabinet heat and vibration

Always match the OEM temperature ratings exactly

Dwyer Instruments FS-2 Flow Switch 320788-704 Built to official York HVACThe Dwyer Instruments FS 2 Flow Switch is a rugged, vane actuated solution designed for reliable flow proving in hydronic and industrial liquid systems. This paddle flow switch features a 1" male NPT process connection and a durable forged brass body, making it ideal for monitoring flow in boilers, chillers, and horizontal pipelines ranging from 1" to 8" in diameter. With a NEMA 4 enclosure (IP64) made of die cast aluminum, this unit is built for