Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Piston Body Material - Valves Steel Pipe or Tube Size 1 1/4 in Connection Type Threaded x Socket Weld Mounting Orientation Horizontal Vertical Max Temp - Valves 600 Degrees F Max Water Pressure - Valves 1 515 psi Seat Material Stellite Spring Material 316 Stainless Steel Application - Valves Corrosives Flammable Process Piping Toxic Length 4 23/32 in Cap to Inlet Center 3 7/20 in