FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

High Pressure Safety Valve HVAC

The valve vents the system when a pressure of 3445-4135 kPa (500-600 psi) and above is reached
The valve closes with a minimum pressure of 2756 kPa (400 psi)