Item – Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Swing Flex, Body Material – Valves Cast Iron, Pipe or Tube Size 2 1/2 in, Connection Type Flange x Flange, Cracking Pressure 0.25 psi, Mounting Orientation Horizontal, Vertical, Seal Material Metal, Max. Temp. – Valves 200 Degrees F, Min. Temp. – Valves 33 Degrees F, Max. Water Pressure – Valves 250 psi, Max. Steam Pressure – Valves Not Rated, Seat Material Buna-N, Flow – Valves 220 gpm, Full Flow – Valves No