Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Inline Poppet Body Material - Valves Brass Pipe or Tube Size 1/4 in Connection Type FNPT x FNPT Cracking Pressure 1 psi Mounting Orientation Horizontal Vertical Seal Material Buna-N Max Temp - Valves 180 Degrees F Min Temp - Valves -20 Degrees F Max Water Pressure - Valves 1 200 psi Max Steam Pressure - Valves Not Rated Seat Material Brass Spring Material Stainless Steel Full Flow - Valves Yes