Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Inline Spring Body Material - Valves 316 Stainless Steel Pipe or Tube Size 2 in Connection Type FNPT x FNPT Cracking Pressure 0.5 psi Mounting Orientation Horizontal Vertical Seal Material Viton Max Temp - Valves 302 Degrees F Max Water Pressure - Valves 250 psi Max Steam Pressure - Valves Not Rated Seat Material FKM Spring Material 316 Stainless Steel Flow - Valves 65 gpm