Watts 0388800 Regulator 320735-701 and A22-5120-000 models

and A22-5120-000 models

replacing the York S1-031-00054-706 ensures the system operates within its designed psychrometric parameters

or the switch shows no continuity at room temperature

or the compressor running constantly without reaching the temperature setpoint when a TXV is restricted or stuck open

Watts 0388800 Regulator 320735-701 and A22-5120-000 modelsThe Watts 0388800 S1450F is a high capacity boiler feed water pressure regulator and safety relief valve designed for professional hydronic heating installations. This dual control unit effectively manages system pressure by automatically filling the boiler and piping while maintaining consistent levels during operation. Built for durability, the valve features a robust iron and bronze body with 1 2 inch union sweat (solder) inlet and NPT threaded