Alco Controls 401RD-3F45-ULC Solenoid Valve Coil

Alco Controls 401RD-3F45-ULC Solenoid Valve Coil is a dedicated coil for a 4‑way reversing valve used in heat pump and refrigerant systems. Designed for 1/2" valve ports and rated for 3.0 tons of cooling capacity, it serves as a direct replacement part for ALCO CONTROLS reversing valves in mid‑size residential or light commercial applications. When energized, this coil actuates the four‑port valve to swap refrigerant flow, enabling the system to switch between heating and cooling modes. The 401RD-3F45‑ULC designation is referenced in ALCO Controls valve catalogs as the matching coil for the corresponding 4‑way valve family, making it a precise fit for service technicians working with Alco/Robertshaw style reversing valves in HVAC installations.