Variable flow orifice valve assembly

Details Variable flow orifice valve assembly Variable flow orifice valve assembly

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16

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F16K 17/02 (2006.01) F16K 1/12 (2006.01) F16K 1/52 (2006.01) F16K 17/30 (2006.01) F16K 47/00 (2006.01) F25B 41/04 (2006.01) F25B 41/06 (2006.01) G05D 7/01 (2006.01)

Patent

CA 2237837

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.

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