Inventors:
Haresh C. Lakhan - Eagan MN, US
Bruce A. Helget - Hutchinson MN, US
Daniel J. Smith - Lakeville MN, US
International Classification:
F16K 1/00
Abstract:
A metering valve for controlling the flow rate of a fluid has a substantially rigid housing having an internal cylindrical wall defining a cavity. The cavity has a first opening at one end and a spaced second opening in the cylindrical wall. A substantially rigid valve element that fits closely within the cavity has an internal bore extending axially from a first end toward a second end. A metering aperture penetrates the valve element wall between the outer surface of the valve element and the valve element bore. Moving the valve element within the housing cavity to a first position places a portion of the second opening within the cavity's second opening at a first position to allow a first rate of fluid flow between the first chamber and the second chamber. Moving the valve element to a second position places the metering aperture at a second position different from the first position to allow a second rate of fluid flow between the first and second chambers. The flow has an axial flow vector within the valve element bore and a radial flow vector through the metering aperture.