The Maximum Operating Pressure (MOP) protects the compressor motor against overload during start-up or after defrost by limiting the suction pressure within safe parameters

moisture-resistant wiring

Its slow-opening characteristic prevents hard ignitions

Durable Construction: Engineered to withstand the rigors of commercial HVACR environments

Installing the switch in a horizontal position can shift the setpoint by approximately 0

McDonnell & Miller 345700 Float and Gaskets Freon The Maximum Operating Pressure (MOP)The McDonnell & Miller 345700 (Model SA91 60) is a high precision replacement float and gasket kit engineered for heavy duty boiler water level control. As a critical component for Series 93, 193, 94, and 194 combination pump controllers and low water cut offs, this stainless steel float assembly ensures accurate buoyancy and reliable switch activation in high pressure steam environments. The SA91 60 replaces legacy models including the SA92 60 and