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Designed for the Watts Series 009 and LF009 backflow preventers
Broad Compatibility: Engineered to work with most HCFC and non-flammable HFC refrigerants used in modern HVAC systems
How do I identify the common wire on the primary side
This SPST pressure switch features open on pressure rise logic
McDonnell & Miller 193-A Controller Refrigerant Designed for the Watts SeriesThe McDonnell & Miller 193 A is a heavy duty combination low water cut off and pump controller engineered for commercial steam boiler applications. Designed for boilers with a maximum pressure of 150 PSI, this unit features dual snap acting SPDT switches for precise burner control and pump activation. The 193 A model utilizes alternate tappings to simplify installation on various boiler configurations. Its rugged float operated mechanism ensures