Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Inline Swing Body Material - Valves Lead Free Copper Silicon Alloy Pipe or Tube Size 3/4 in Connection Type FNPT Cracking Pressure 0.5 psi Mounting Orientation Horizontal Vertical Max Temp - Valves 180 Degrees F Min Temp - Valves 33 Degrees F Max Water Pressure - Valves 200 PSI @ 180 Degrees F Max Steam Pressure - Valves Not Rated Seat Material Elastomer Full Flow - Valves No Length 2 1/2 in