The Parker 100931 valve is typically applied in suction line bypass or receiver pressure control where stable pressure management is critical for system longevity and efficiency

with a drop-out voltage of 120V

preserving the manifold pressure efficiency and overall system safety of the HVAC unit

600V rated leads to reduce installation time and prevent wiring errors

effectively preventing motor shaft seizure and premature system failure

Lochinvar & A.O. Smith 100318326 Pressure Switch R-407C The Parker 100931 valve isThe Lochinvar & A. O. Smith 100318326 Pressure Switch is a critical safety component designed for precise water pressure monitoring in high efficiency Noble Fire Combi Boilers and NKC series units. Engineering to detect low water pressure conditions, this switch acts as a primary fail safe, preventing dry fire scenarios and potential heat exchanger damage by ensuring the burner circuit remains open unless sufficient system pressure is established.