Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Swing Body Material - Valves Stainless Steel Pipe or Tube Size 1/2 in Connection Type Flanged X Flanged Cracking Pressure 0.02 psi Max Temp - Valves 100 Degrees F Min Temp - Valves -20 Degrees F Max Water Pressure - Valves 275 psi Seat Material Metal Application - Valves Corrosives Oil Pipeline Steam Water Length 4 1/4 in Cap to Inlet Center 2 in Standards ASME B16.34 ASME Class 150