Posted on July 27, 2021 by Jack Thermo King Truck – Pressure Points and System Components (R-22) Refrigeration Cycle 1. Expansion Valve 2. Quench Valve 3. 3 Way Valve 4. By-pass Check Valve 5. Compressor Pressure Regulating Valve (CPR) 6. Compressor Valve Plates and Reed Valves