2" Flanged Stainless Steel Spring Lever Check Valve Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Spring, Body Material - Valves 316 Stainless Steel, Pipe or Tube Size 2 in, Connection Type Flange x Flange, Cracking Pressure 0.22 psi, Mounting Orientation Horizontal, Vertical, Seal Material Viton, Max.