Item – Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Swing, Body Material – Valves PVC, Pipe or Tube Size 1 in, Connection Type Socket x Socket, Cracking Pressure 0.25 psi, Mounting Orientation Horizontal, Vertical, Seal Material EPDM, Max. Temp. – Valves 140 Degrees F, Min. Temp. – Valves 14 Degrees F, Max. Water Pressure – Valves 150 psi @ 70 Degrees F, Max. Steam Pressure – Valves Not Rated, Seat Material PVC, Flow – Valves 20.2 gpm, Full Flow – Valves Yes