Wafer Check Valve Material of Construction PVC Size 8 In. Connection Type Flanged Length 4-15/16 In. Width 10-7/8 In. Overall Height 13-3/8 In. Max Water Pressure 150 psi @ 70 Degrees F Cracking Pressure 1 psi Max Temp 140 Degrees F Mounting Position Vertical or Horizontal Seat Material FPM Spring Material Stainless Steel Seal Material FPM Flow 1225 gpm