Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Inline Silent Body Material - Valves Cast Iron Pipe or Tube Size 12 in Connection Type Flange x Flange Cracking Pressure 0.5 psi Mounting Orientation Horizontal Vertical Seal Material Metal Max Temp - Valves 200 Degrees F Min Temp - Valves 33 Degrees F Max Water Pressure - Valves 200 psi Max Steam Pressure - Valves Not Rated Seat Material Bronze Spring Material 316 Stainless Steel