Back pressure flapper valve

Details Back pressure flapper valve Back pressure flapper valve

1991-05-03

1993-04-13

Bagnell, David J.

Wells

Valves, closures or changeable restrictors

Fluid operated

137527, E21B 3408, F16K 1503

Patent

active

052013715

ABSTRACT:
In an oil field tubular assembly, a flapper valve permitting downward flow and blocking upward flow is closed by down-hole pressure. A pivotally mounted flapper is urged to the closed position by a spring force, which may be moderated approaching the open position to reduce flow resistance, and an offset valve inlet passage provides clearance for flapper opening and room for the pivotal mounting.

REFERENCES:
patent: 1871536 (1932-08-01), LeBus
patent: 3016914 (1962-01-01), Keithahn
patent: 4230150 (1980-10-01), Scaramucci
patent: 4605041 (1986-08-01), Teumer

Affiliated with

Also associated with

Rating

Back pressure flapper 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 Back pressure flapper valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Back pressure flapper valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1149392