Ball valve

Details Ball valve Ball valve

1977-10-25

1979-02-06

Weakley, Harold W.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Liquid supplied at valve interface

251 17, 251315, F16K 336

Patent

active

041379365

ABSTRACT:
A valve including an emergency sealing device comprising a piston slidably fitted in a cylindrical bore formed at inner end of a fluid inlet passage, a seat holder slidably fitted in said piston, a main seat ring supported at the inner end of the seat holder, an auxiliary seat ring supported at the inner end of the piston, a spring arranged between said piston and said seat holder to normally hold the main seat ring against the valve element and the auxiliary seat ring away from the valve element, and a pressure medium supplying means for feeding pressure medium, when required, to press the auxiliary valve seat ring against the valve element to produce emergency sealing action and to further press the main valve seat ring against the valve element with increased pressing force.

REFERENCES:
patent: 3497177 (1970-02-01), Hulsey
patent: 3504885 (1970-04-01), Hulsey
patent: 3583426 (1971-06-01), Feres

Affiliated with

Also associated with

Rating

Ball valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ball valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ball valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-887290