Johnson Controls FS1-6 Flow Switch 30067439-890 Durable Construction: Engineered with high-temperature

Durable Construction: Engineered with high-temperature bearings and corrosion-resistant impellers for long-cycle reliability

Ensure the second stage is mapped to the 'Aux' terminal to allow the thermostat to call for supplemental heat when the outdoor unit cannot maintain the setpoint

and electric heat sequencers

The internal contact block is factory-sealed to maintain high contact force until the precise break point

Cartridge Design: Simplified housing integration allows for faster swap-outs in the field compared to standard pill-block inserts

Johnson Controls FS1-6 Flow Switch 30067439-890 Durable Construction: Engineered with high-temperatureThe Johnson Controls FS1 6 Flow Switch is a professional grade solution for proving liquid flow in critical HVACR and industrial piping systems. Engineered with a waterproof construction and a corrosion resistant enclosure, this SPDT flow switch provides reliable signaling for pump control, chiller protection, and process cooling loops. The unit features a magnetically coupled design that isolates the electrical switch housing from the process media,