Item - Check Valves Check Valve Flow Design Single Mechanism and Body Design Inline Spring Body Material - Valves Bronze Pipe or Tube Size 1 1/2 in Connection Type FNPT x FNPT Cracking Pressure 1 psi Mounting Orientation Horizontal Vertical Seal Material Buna-N Max Temp - Valves 190 Degrees F Max Water Pressure - Valves 400 psi Max Steam Pressure - Valves Not Rated Seat Material Bronze Spring Material Stainless Steel Application - Valves General Purpose Length 2 5/8 in