Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Piston Body Material - Valves Stainless Steel Pipe or Tube Size 1 1/2 in Connection Type Threaded X Threaded Mounting Orientation Horizontal Vertical Max Temp - Valves 650 Degrees F Max Water Pressure - Valves 975 psi Seat Material Stellite Spring Material 316 Stainless Steel Application - Valves Corrosives Flammable Process Piping Toxic Length 5 63/64 in Cap to Inlet Center 4 1/50 in