Posted on July 27, 2021 by Jack Thermo King Trailer – Pressure Points and System Components (R-22) Refrigeration Cycle 1. Bypass Check Valve 2. Hot Gas Solenoid (SV-3) 3. Hot Gas Solenoid (SV-4) 4. Quench Valve 5. Expansion Valve 6. Compressor Valve Plates and Reed Valves