Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Piston Body Material - Valves Steel Pipe or Tube Size 1/4 in Connection Type Threaded X Threaded Mounting Orientation Horizontal Vertical Max Temp - Valves 100 Degrees F Min Temp - Valves -20 Degrees F Max Water Pressure - Valves 1 975 psi Seat Material Stellite Spring Material 316 Stainless Steel Application - Valves Corrosives Flammable Process Piping Toxic Length 3 7/64 in