McDonnell & Miller 328100 Replacement Casting Refrigerant protecting the blower motor and

protecting the blower motor and associated bearings from mechanical stress

What are the signs that a furnace O-ring needs replacement

Can I use a common wire with this thermostat

The assembly typically includes a pre-lubricated bearing insert (Peer 205-16)

Contractors should note this is a non-lockup type regulator and must only be used where downstream controls can handle line pressure

McDonnell & Miller 328100 Replacement Casting Refrigerant protecting the blower motor andThe McDonnell & Miller 328100 is an authentic OEM replacement casting specifically engineered for the 157 R Series low water cut off and pump controllers. This heavy duty 157 R casting provides the structural foundation for your float chamber, ensuring a pressure tight seal in high demand residential, commercial, and industrial steam boiler applications. In the field, these castings are critical for maintaining system integrity when original housings