Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Spring with Tap, Body Material - Valves Brass, Pipe or Tube Size 1 1/4 in, Connection Type FNPT x FNPT, Cracking Pressure 0.5 psi, Mounting Orientation Horizontal, Vertical, Seal Material NBR, Max. Temp. - Valves 158 Degrees F, Min. Temp. - Valves 35 Degrees F, Max. Water Pressure - Valves 200 psi, Max. Steam Pressure - Valves Not Rated, Seat Material Bronze, Spring Material Stainless Steel