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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
For contractors maintaining HVAC fuel trains
Using it in third-party controllers may result in communication failures or firmware conflicts
preventing excessive water consumption and protecting system efficiency
Direct Fit: Eliminates field-modification issues during Honeywell recorder part swaps
Rugged Construction: Built with an all-steel case and cover to protect internal switch mechanisms
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
US$ 24.95
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US$ 105.00