McDonnell & Miller 157S-RBP-MD Pump Controller 30067439-890 The 1/2 inch bore hub

The 1/2 inch bore hub ensures a secure

Does this relay require manual calibration of the time delay

This is a 3-speed motor

040) must match the specific refrigerant and tonnage requirements listed in the technical service manual for your specific model

The externally equalized configuration ensures maximum evaporator efficiency by compensating for pressure drops

McDonnell & Miller 157S-RBP-MD Pump Controller 30067439-890 The 1/2 inch bore hubThe McDonnell & Miller 157S RBP MD Pump Controller (Part Number 176503) is a heavy duty, float operated combination low water cut off and pump controller designed for commercial and industrial steam boilers. Engineered with an integral water column and monel bellows for superior corrosion resistance, this unit provides precise level management at operating pressures up to 150 psi. This specific model features maximum differential operation, which is