Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Silent, Body Material - Valves Cast Iron, Pipe or Tube Size 2 1/2 in, Connection Type Flange x Flange, Cracking Pressure 0.300 to 1.250 psi, Mounting Orientation Horizontal, Vertical, Seal Material Metal, Max. Temp. - Valves 300 Degrees F, Min. Temp. - Valves 60 Degrees F, Max. Water Pressure - Valves 200 psi @ 250 Degrees F, Max. Steam Pressure - Valves 200 psi WSP, Seat Material Bronze