Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Spring, Body Material - Valves Bronze, Pipe or Tube Size 1 1/2 in, Connection Type FNPT x FNPT, Cracking Pressure 1 psi, Mounting Orientation Horizontal, Vertical, Seal Material Buna-N, Max. Temp. - Valves 190 Degrees F, Max. Water Pressure - Valves 400 psi, Max. Steam Pressure - Valves Not Rated, Seat Material Bronze, Spring Material Stainless Steel, Application - Valves General Purpose, Length 2 5/8 in