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2-way normally closed solenoid valve
Comprehensive Service Coverage: Includes all internal components for both the first and second check valves
providing the versatility required for residential and light commercial HVACR setups
Built for the rigors of direct-fired heating equipment
The MARS 12166 is rated for 440VAC but remains fully backwards compatible with 370V systems
McDonnell & Miller 347900 Assembly and Gaskets R-410A 2-way normally closed solenoid valveThe McDonnell & Miller 347900, also identified by model number SA150 106R, is a critical bellows assembly and gasket replacement engineered for Series 150 and 157 low water cut off (LWCO) and pump controllers. For technicians servicing steam boilers, this assembly is the primary pressure sensing component that translates water level changes into mechanical action for the switch head. Constructed with a corrosion resistant Monel bellows, the unit is
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