High Pressure Safety Valve HVAC: Description and Operation

SYSTEM OPERATION
High Pressure Relief Valve
The valve is located at the rear of the compressor. The valve is used to prevent excessive high system pressure. The valve vents the system when a pressure of 3445-4135 kPa (500-600 psi) and above is reached. This prevents damage to the compressor and other system components. The valve closes with a minimum pressure of 2756 kPa (400 psi).