Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Inline Piston Body Material - Valves Carbon Steel Pipe or Tube Size 1 in Connection Type Socket x Socket Cracking Pressure 10 psi Mounting Orientation Horizontal Seal Material 304 Stainless Steel Graphite Max Temp - Valves 800 Degrees F Min Temp - Valves 0 Degrees F Max Water Pressure - Valves 2 000 psi @ 100 Degrees F Max Steam Pressure - Valves 800 psi WSP Seat Material Stellite