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providing precise control over compressor cycling and low-side protection
electrical connectors and RPM ratings vary
Key Benefits Fail-Safe Operation: The 2-wire spring return actuator ensures the damper defaults to an open position during power loss
Does this valve include the LP conversion kit
McDonnell & Miller 51-S-2-HD Cut Off Els PW 17895 providing precise control over compressorThe McDonnell & Miller 51 S 2 HD (Part Number 136200) serves as a heavy duty head mechanism only for professional grade water level control. Engineered for high capacity low pressure steam and hot water boiler systems, this unit integrates a mechanical water feeder with a low water cut off (LWCO) function via a built in Snap Acting SPDT switch (No. 2 Switch). It is designed to handle a maximum vessel pressure of 35 PSI and an inlet water supply up to