Patent ID: 6050293
Filing Date: 2000-04-18
Classification: E03B,F16K,Y10T

Abstract:
A check valve assembly mounted for engagement with a valve seat, said check valve assembly comprising:a flapper valve comprisinga bracket pivotably mounted in a region along a first hemisphere of the valve seat,a valve plate mounted to said bracket along a region generally spaced from a periphery of said valve plate, anda mounting assembly adjustably joining said valve plate to said bracket,said flapper valve having a first, closed position with said valve plate in sealing engagement with the valve seat about said periphery of said valve plate and a second, open position spaced from the valve seat, andat least one lever arm pivotably mounted in a region along a second hemisphere of the valve seat opposite said first hemisphere and including a lever surface disposed for moving contact with an engagement surface of said bracket, said lever arm including a biasing means for biasing said lever surface toward contact with said engagement surface.