Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Swing, Body Material - Valves Brass, Pipe or Tube Size - Check Valves 1 In., Connection Type - Check Valves FNPT x FNPT, Cracking Pressure - Check Valves 0.750 to 1.000 psi, Mounting Orientation - Check Valves Horizontal, Vertical, Seal Material - Check Valves Brass, Min. Temp. - Valves -20 Degrees F, Max. Water Pressure - Valves 200 psi @ 150 Degrees F, Max. Steam Pressure - Valves Not Rated