Item - Check Valves Check Valve Flow Design Dual Mechanism and Body Design Inline Body Material - Valves Cast Copper Alloy Pipe or Tube Size 1/2 in Connection Type FNPT x FNPT Mounting Orientation Horizontal Vertical Seal Material EPDM Max Temp - Valves 180 Degrees F Max Water Pressure - Valves 150 psi Max Steam Pressure - Valves Not Rated Seat Material Composite Spring Material Stainless Steel Application - Valves General Purpose Length 3 5/8 in Width 1 7/8 in