Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Y, Body Material - Valves PVC, Pipe or Tube Size 1/2 in, Connection Type FNPT x FNPT, Cracking Pressure 1.0 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, Flow - Valves 0.8 gpm, Full Flow - Valves Yes