Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Wafer, Body Material - Valves PVC, Pipe or Tube Size 6 in, Connection Type Flange x Flange, Cracking Pressure 1 psi, Mounting Orientation Horizontal, Vertical, Seal Material EPDM, Max. Temp. - Valves 140 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 1, 000 gpm, Full Flow - Valves Yes