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or blockages
this unit is designed strictly for use with clean air or non-conducting gases
It functions using a 250mV to 750mV power pile
When you are troubleshooting a chiller or commercial hydronic system
McDonnell & Miller 64-HD Cut Off Refrigerant or blockagesThe 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
