Check Valve Material of Construction PVC Size 1/2 In. Connection Type FNPT Length 3-13/16 In. Width 2-13/32 In. Overall Height 3-51/64 In. Cap to Inlet Center 2-5/16 In. Cracking Pressure 1.0 to 1.5 psi Max Temp 140 Degrees F Mounting Position Any Seat Material Viton Seal Material Viton