Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Inline True Union Body Material - Valves CPVC Pipe or Tube Size 4 in Connection Type Socket x Socket Cracking Pressure 3 psi Mounting Orientation Vertical Seal Material EPDM Max Temp - Valves 190 Degrees F Min Temp - Valves 40 Degrees F Max Water Pressure - Valves 150 psi @ 70 Degrees F Max Steam Pressure - Valves Not Rated Seat Material EPDM Flow - Valves 275 gpm Full Flow - Valves Yes