Using it with higher-pressure refrigerants like R-410A may exceed the 500 psi limit and damage the internal calibration

if the motor is humming but not starting

this model is the official successor

When performing a York S1-328-12454-000 swap

utilizing the same footprint and 140 lb-in torque rating for hassle-free retrofits

Schneider Electric (Barber Colman) AL-161-4 Switching Valve Refrigerant Using it with higher-pressure refrigerantsThe Schneider Electric (Barber Colman) AL 161 4 Switching Valve is a robust 3 way pneumatic switching valve engineered for critical air distribution in dual pressure HVAC systems. This unitary valve is designed to facilitate seamless central supply air changeover, operating reliably within an 8 13 psi pressure range. Featuring 1 2 inch FNPT body connections and a 1 8 inch FNPT actuator port, the AL 161 4 ensures high capacity throughputrated at 25,920