Specifications:• Spring Color: Green• Maximum Pressure: 4,500 PSI• Rated Pressure: 4,050 PSI • Max. Volume: 21.0 GPM• Adjustable pressure• Forged brass body• Maximum Temperature: 200° F• Inlet Ports (2): 1/2" FPT• Discharge Port: 1/2” FPT• Bypass Ports (2): 1/2” FPT• Weight: 3.1 lb