Item – Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Ball Cone, Body Material – Valves Bronze, Pipe or Tube Size 1 1/2 in, Connection Type FNPT x FNPT, Cracking Pressure 0.5 psi, Mounting Orientation Horizontal, Vertical, Seal Material EPDM, Max. Temp. – Valves 180 Degrees F, Min. Temp. – Valves 33 Degrees F, Max. Water Pressure – Valves 400 psi, Max. Steam Pressure – Valves 125 psi WSP, Seat Material RPTFE, Spring Material Stainless Steel