York S1-022-22498-000 Check Valve 340155-7026 Always verify the SPST NO

Always verify the SPST NO relay configuration matches your wiring diagram

while the robust green-coded housing allows for rapid identification in the field

making it ideal for managing pilot air signals or small-volume pneumatic actuators

threaded installation on existing trap caps

Measuring the resistance across the device when cool will reveal if the internal thermistor has cracked or failed open

York S1-022-22498-000 Check Valve 340155-7026 Always verify the SPST NOThe York S1 022 22498 000 Check Valve is a critical directional control component designed for high pressure refrigerant piping systems. Featuring a 3 8 inch ODF connection, this valve prevents backflow into the compressor or condenser, maintaining system pressure differentials during off cycles. Since this is an OEM York replacement part, the internal spring tension and seat materials are specifically calibrated for Johnson Controls and York HVAC