McDonnell & Miller FS4-3J Flow Switch Els PW 17895 ensuring the control board can

ensuring the control board can accurately modulate the firing rate and maintain the correct delta T across the heat exchanger

particularly where a constant differential is required to manage ice thickness and harvest cycles

It will close the circuit automatically once the sensor detects the temperature has dropped to approximately 95°F

though technicians should still use appropriate PPE when operating high-temperature valves

making it a staple for your service truck

McDonnell & Miller FS4-3J Flow Switch Els PW 17895 ensuring the control board canThe McDonnell & Miller FS4 3J Flow Switch (Part Number 114610) is a heavy duty, general purpose liquid flow switch designed for HVAC and industrial hydronic systems. This model features a 1" BSPT connection, making it a critical component for international piping standards or specific domestic applications requiring British Standard Pipe Threads. Equipped with a Single Pole, Double Throw (SPDT) switch, the FS4 3J provides versatile signaling for