초록 ▼

A valve assembly is shown having a valving member situated generally in the path of flow of a fluid which varies in pressure and urges the valving member in generally the same direction as the flow of the fluid; a spring is shown resiliently resisting the movement of the valving member by the flow o

A valve assembly is shown having a valving member situated generally in the path of flow of a fluid which varies in pressure and urges the valving member in generally the same direction as the flow of the fluid; a spring is shown resiliently resisting the movement of the valving member by the flow of fluid; as the valving member is urged in the direction of the flow of the fluid the valving member reduces the effective flow area of the valve assembly through which area the fluid is to flow; the valve assembly features low hysteresis, resistance to plugging by debris in system, is flow sensitive activating at higher pressure differential as flow is increased and it may incorporate a fail safe feature reopening in case of spring failure; flow noise attenuation is also a feature.

대표청구항 ▼

[ What is claimed is:] [1.] A valving assembly for controlling the rate of flow of a fluid from an area generally upstream of said valving assembly and of varying fluid pressure, comprising an axially extending housing, an axially extending passage formed in said housing, said passage comprising an

[ What is claimed is:] [1.] A valving assembly for controlling the rate of flow of a fluid from an area generally upstream of said valving assembly and of varying fluid pressure, comprising an axially extending housing, an axially extending passage formed in said housing, said passage comprising an inlet end for said fluid and an outlet end for said fluid, an axially extending valving member slidably received by said passage, wherein said inlet end comprises generally inner annular metering surface means, wherein said valving member comprises a metering head portion having outer valving surface means, wherein said outer valving surface means is received in and radially inwardly spaced from said inner annular metering surface means, wherein as said fluid pressure increases said fluid acts against said axially extending valving member and urges said axially extending valving member in a direction whereby said outer valving surface means cooperates with said inner annular metering surface means to at least tend to reduce the rate of flow of said fluid between said outer valving surface means and said inner annular metering surface means and to at least tend to axially move said axially extending valving member generally in a direction toward said outlet end, and resilient means operatively connected to said axially extending valving member and resiliently resisting the tendency of said axially extending valving member to move in said direction toward said outlet end.