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For field durability
While a 3-pole contactor can technically interrupt three separate legs of power
typically 0-10VDC or 4-20mA
the SM120-4VI is functionally identical to part numbers P040-12571
While the Rheem 51-102497-01 motor is a factory-programmed X13 replacement
Carrier EF17BZ271 Reversing Valve THPU32HP7Y For field durabilityThe Carrier EF17BZ271 Reversing Valve is a critical 4 way pilot operated refrigerant control designed for high performance heat pump systems. Engineered as a direct replacement for 1175622, this OEM component features a 1 2" x 7 8" ODF (Outer Diameter Flare) connection, facilitating precise directional control of refrigerant flow to switch between heating and cooling cycles. Operating on a standard 24V solenoid coil, this valve is a Factory Authorized