Method for assembling balanced normally-open and...

Details Method for assembling balanced normally-open and... Method for assembling balanced normally-open and...

2006-09-05

2006-09-05

Lee, Kevin (Department: 3753)

Fluid handling

Processes

Cleaning, repairing, or assembling

C137S271000

Reexamination Certificate

active

07100629

ABSTRACT:
A method for converting a balanced valve assembly from a normally open position to a normally closed position, and a method for converting a balanced valve assembly from a normally closed position to a normally open position is shown. The method allows the same balanced valve body to be used with both normally open position and normally closed position by changing the connection of the plug and stem assembly and by replacing the cap and bonnet assemblies.

REFERENCES:
patent: 3542056 (1970-11-01), Chinn et al.
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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