The McDonnell & Miller 157S-M (Part Number 175402) is a professional-grade combination low water cut-off and pump controller designed for commercial and industrial steam boiler applications

this PSC blower motor ensures optimal airflow efficiency and consistent temperature regulation throughout your home

Pressure creep is usually caused by debris or pipe scale lodged between the poppet and the seat

meaning it can switch or isolate two separate circuits simultaneously

York S1-6007531 Motor 340793-762 The McDonnell & Miller 157S-MThe York S1 6007531 Motor is a high performance 1 3 HP condenser fan motor engineered for reliable duty in demanding HVACR environments. Operating at 208 230V and 850 RPM, this single phase motor features a CCW (counter clockwise) rotation to ensure optimal heat exchange and airflow across the condenser coils. As a direct replacement for S1 024 34550 001, it maintains factory spec compatibility with a wide range of York, Luxaire, and Coleman units,