Patent ID: 8517051
Filing Date: 2013-08-27
Classification: F24D,G05D,Y10T

Abstract:
1. A flow control valve comprising a body portion including a first end, a second end and an interior surface defining an axially extending passageway having a minimum diameter portion, a metering valve including an upstream portion, a downstream portion and a side portion between the upstream portion and the downstream portion, the side portion including a maximum diameter portion smaller than the minimum diameter portion of the axial passageway to define a fluid flow space through which fluid can flow between the maximum diameter portion of the metering valve and the minimum diameter portion of the axially extending passageway, the upstream portion having a flattened top spherical shape, the metering valve being axially moveable within the axially extending passageway under the influence of fluid pressure from a rest position wherein flow of fluid through the valve is relatively unrestricted, to a flow restricting position wherein the metering valve can relatively restrict, while still permitting the flow of fluid through the fluid flow space of the axially extending passageway, and a biasing device for normally biasing the metering valve in the rest position, and for providing resistence to movement of the metering valve to the flow restricting position.