Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Inline Spring Piston Body Material - Valves 316 Stainless Steel Pipe or Tube Size 3 in Connection Type FNPT x FNPT Cracking Pressure 0.435 psi Mounting Orientation Vertical Seal Material PTFE/PTFE+15 Percent Glass Fiber/PTFE+ 25 PercentCarbon/TFM1600 Max Temp - Valves 302 Degrees F Min Temp - Valves -20 Degrees F Max Water Pressure - Valves 200 psi Max Steam Pressure - Valves 60 psi WSP