Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Y Spring Piston Body Material - Valves 316 Stainless Steel Pipe or Tube Size 1/2 in Connection Type FNPT x FNPT Cracking Pressure 0.435 psi Mounting Orientation Horizontal Vertical Seal Material PTFE/PTFE+15 Percent Glass Fiber/PTFE+ 25 PercentCarbon/TFM1600 Max Temp - Valves 356 Degrees F Min Temp - Valves -20 Degrees F Max Water Pressure - Valves 800 psi Max Steam Pressure - Valves 130 psi WSP