Patent ID: 7222641

Claim:
A flapper valve assembly for use with a fluid device having a flow passage defined by a peripheral wall formed with opposed recesses therein, the flapper valve assembly comprising: a cradle, dimensioned to be located slidably in the flow passage to block flow through the flow passage, the cradle having a fluid port therein to allow flow therethrough and thus through the flow passage; the cradle having opposed, resilient, outwardly disposed fingers adapted to engage the flow passage opposed recesses and retain the cradle in position in the flow passage; a flapper having a mounting part secured to the cradle, and a hinged tongue part that includes a blocking portion, the tongue part being moveable from a first position where the blocking portion at least partially closes the fluid port, to a second position where the blocking portion opens the fluid port; and bias means for urging the tongue part into the first position wherein there are four spaced-apart fingers, each finger having a V-shaped tab portion, the apex of the tab portion extending outwardly to engage a respective one of said opposed recesses in the peripheral wall of the flow passage.