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A valve assembly for use in a sprinkler head comprising a valve seat having a generally frusto-conical surface configuration and an annular rib, a flanged valve member in sealing engagement with said annular rib and having a depending, radially inwardly spaced surface which in cooperation with said

A valve assembly for use in a sprinkler head comprising a valve seat having a generally frusto-conical surface configuration and an annular rib, a flanged valve member in sealing engagement with said annular rib and having a depending, radially inwardly spaced surface which in cooperation with said annular rib and surface configuration forms a partially enclosed space in which a resilient O-ring is captively held in compressive engagement between the valve seat and valve member.

대표청구항 ▼

A valve assembly for use with a sprinkler head having a fluid passage for receiving a fire quenching fluid, comprising: a valve seat having a radially inwardly inclined shaped surface and an annular rib; a valve member in sealing engagement only with said annular rib and forming, in association with

A valve assembly for use with a sprinkler head having a fluid passage for receiving a fire quenching fluid, comprising: a valve seat having a radially inwardly inclined shaped surface and an annular rib; a valve member in sealing engagement only with said annular rib and forming, in association with said rib and shaped surface, a partially enclosed space; a resilient compressible member captively disposed within said space and wedged between said valve member and said valve seat; said valve seat being provided with an inwardly directed, inclined aligning surface spaced radially outwardly of said annular rib whereby said valve member self-aligns on said annular rib; said valve member having a radially extending flange in sealing engagement with said annular rib and an inwardly spaced depending body portion of annular configuration forming, in association with said flange, annular rib and valve seat, a partially enclosed space having a restricted opening in fluid communication with said fluid passage; and the outer edge of said flange being positioned sufficiently close to said aligning surface that it acts upon movement of said valve member by pressure transients produced by fluid in said fluid passage to remove build up of contaminant encrustation from said aligning surface.