Item - Check Valves Check Valve Flow Design Dual Mechanism and Body Design Inline Swing Body Material - Valves 304 Stainless Steel Pipe or Tube Size 1 in Connection Type FNPT x FNPT Cracking Pressure 129 psi Mounting Orientation Horizontal Seal Material 304 Stainless Steel Max Temp - Valves 300 Degrees F Min Temp - Valves 0 Degrees F Max Water Pressure - Valves 200 psi Max Steam Pressure - Valves 80 psi WSP Spring Material 304 Stainless Steel Full Flow - Valves No