Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Inline Wafer Body Material - Valves Ductile Iron Pipe or Tube Size 3 in Connection Type Grooved x Grooved Cracking Pressure 500 psi Mounting Orientation Horizontal Seal Material EPDM Max Temp - Valves 230 Degrees F Min Temp - Valves -40 Degrees F Max Water Pressure - Valves 300 psi Seat Material 304 Stainless Steel Spring Material 303 Stainless Steel Flow - Valves 700 gpm Full Flow - Valves Yes