Multiple-stage valve system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9353771
APP PUB NO 20120241012A1
SERIAL NO

13513644

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A multiple-stage valve system (200) including a pilot fluid supply (209) and a process fluid supply (222) is provided. The multiple-stage valve system includes a first pilot valve (201) including a first port (206) in fluid communication with the pilot fluid supply and a second port (207) selectively in fluid communication with the first port. The multiple-stage valve system also comprises a second pilot valve (202). The second pilot valve can include a first port (213) in fluid communication with the process fluid supply and a second port (214) selectively in fluid communication with the first port. The second pilot valve also includes a first pressure-actuated biasing member (217) in fluid communication with the process fluid supply and a second pressure-actuated biasing member (218) in fluid communication with the second port of the first pilot valve. The multiple-stage valve system also comprises a main control valve (203). The main control valve can include a first port (220) in fluid communication with the process fluid supply and a second port (221) selectively in fluid communication with the first port. The main control valve can also include a first pressure-actuated biasing member (225) in fluid communication with the process fluid supply and a second pressure-actuated biasing (226) member in fluid communication with the second port of the second pilot valve.

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Patent Owner(s)

  • NORGREN GMBH

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Studer, Roger Balterswil, CH 3 21

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