McDonnell & Miller 157S-MD Pump Controller Els PW 29614 this specific brass-body model with

this specific brass-body model with NBR seals is typically compatible with light oils (up to 300 SSU)

By securing the motor in its optimal geometric position

suitable for low-pressure steam and water applications

operating with a 25 VAC control voltage

The Reznor 204327 SPDT Pressure Switch is a critical safety control designed for precise combustion air pressure monitoring in commercial and industrial gas-fired unit heaters

McDonnell & Miller 157S-MD Pump Controller Els PW 29614 this specific brass-body model withSecure high performance water level management with the McDonnell & Miller 157S MD Pump Controller (Part Number 175412), a heavy duty combination low water cut off and pump controller designed for industrial and commercial steam boilers. Engineered for maximum differential operation, this model is built to prevent nuisance burner shutdowns caused by volatile, fluctuating water lines, making it an essential component for high demand boiler water level