Description
The York S1-VLHP-DSF9 Reversing Valve is a four-way refrigerant flow control valve used in heat pump systems to switch between modes, in HVAC systems. It is installed in the refrigerant circuit of 1.5-ton heat pump units where it redirects hot gas flow based on the system’s operating mode. The valve is typically actuated by a solenoid and shifts an internal slide mechanism to change the direction of refrigerant between indoor and outdoor coils. It is positioned within the outdoor unit’s refrigeration assembly and plays a central role in mode reversal and overall cycle control.









