McDonnell & Miller 64-HD Cut Off Refrigerant For contractors maintaining HVAC fuel

For contractors maintaining HVAC fuel trains

If the ac contactor shows visible burn marks or fails a continuity test

The outside diameter of the 6J flange is precision-machined

Common Questions Is this kit compatible with the V47 series

preventing excessive water consumption and protecting system efficiency

McDonnell & Miller 64-HD Cut Off Refrigerant For contractors maintaining HVAC fuelThe McDonnell & Miller 144400, also known as the 64 HD Head Mechanism, is a heavy duty replacement unit designed for Series 64 and Series 764 low water cut offs. Engineered for both hot water and steam boilers, this mechanical oversight component facilitates an auto reset function to ensure continuous system protection without manual intervention. As a float type LWCO mechanism, it is rated for a maximum boiler pressure of 50 PSI. This unit serves as