Balanced valve body for use with normally-open and...

Details Balanced valve body for use with normally-open and... Balanced valve body for use with normally-open and...

2006-01-03

2006-01-03

Lee, Kevin (Department: 3753)

Fluid handling

Convertible

Units interchangeable between alternate locations

C251S214000, C251S282000

Reexamination Certificate

active

06981515

ABSTRACT:
A valve body is provided that be used as a balanced normally open valve, a balanced closed valve, or as a three way valve. The valve body incorporates a valve plug provided with a pressure port such that pressure chambers are created in the valve body when the valve is being used as either a normally open valve or a normally closed valve.

REFERENCES:
patent: 3542056 (1970-11-01), Chinn
patent: 4061157 (1977-12-01), Hanssen
patent: 4137934 (1979-02-01), Rice et al.
patent: 4341370 (1982-07-01), Banks
patent: 6851658 (2005-02-01), Fitzgerald et al.

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