Main Stage In-Line Pressure Control Cartridge with Optional Reverse Flow Function
OwnerDavid Albrecht, David Albrecht, JR.inventors
Life of this patent
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Abstract
A main stage in-line pressure control cartridge. The cartridge selectively controls flow in-line in the same direction as opposed to directing flow at a 90 degree angle like other cartridges. A tubular poppet can be mounted into a body and has a sliding control sleeve that can expose radial holes in the poppet to an open position and to seal the radial holes in a closed position. The cartridge can be configured in numerous ways in order to serve many functions, such as a pressure relief valve, a counterbalance valve, and a flow control valve. The cartridge can also be configured to allow or prevent reverse flow.
Claims3
A method to control fluid flow, the method comprising:
- receiving fluid inside a first end of a body housing a valve assembly, the fluid exerting pressure against a first face of a control sleeve;
- permitting the fluid to flow through the control sleeve into a control chamber and exert pressure against a second face of the control sleeve opposite the first face;
- channeling some of the fluid from the control chamber into a pilot valve;
- and
- opening the pilot valve and draining some of the fluid from the control chamber, causing the pressure against the first face of the control sleeve to open the control sleeve and thereby creating an unrestrained main channel of fluid flow through the valve assembly and out through a second end of the body, the second end opposite the first end,
- wherein the unrestrained main channel of fluid flow exiting out the second end is in a same direction as the fluid when entering the body.
Dependencies are inferred from the claim text.