Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Y Spring, Body Material - Valves PVC, Pipe or Tube Size 1 in, Connection Type Socket x Socket, Cracking Pressure 2.000 to 15.000 psi, Mounting Orientation Horizontal, Vertical, Seal Material FPM, 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 FPM, Spring Material Stainless Steel