McDonnell & Miller 157S-MD Pump Controller Els PW 17895 Integrated Safety: The open-on-rise action

Integrated Safety: The open-on-rise action ensures equipment protection by preventing runaway temperature conditions

SPDT Switch Action: Enables flexible HVAC wiring for both "make-on-rise" and "break-on-rise" operations

This unit includes a number 8 orifice and a 60-inch capillary tube for versatile bulb placement

it is a best practice for veterans to mount the valve with the solenoid upright and vertical to reduce the risk of sediment accumulation in the core tube

You can select between the 30A

McDonnell & Miller 157S-MD Pump Controller Els PW 17895 Integrated Safety: The open-on-rise actionSecure 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