Floating plate back pressure valve assembly

Details Floating plate back pressure valve assembly Floating plate back pressure valve assembly

2006-09-19

2006-09-19

Bagnell, David (Department: 3672)

Wells

Valves, closures or changeable restrictors

Fluid operated

C166S325000, C166S319000, C137S433000

Reexamination Certificate

active

07108068

ABSTRACT:
A back pressure valve assembly for use in a well casing string. The valve assembly comprises a housing with a stationary and a floating plate therein. The floating plate is moveable between an open position spaced from the stationary plate and a closed position engaging the stationary plate. Fluid flow downwardly through the valve assembly tends to move the floating plate toward the open position, and fluid flow upwardly through the valve assembly tends to move the floating plate toward the closed position. A finger or key may be used to prevent rotation of the floating plate with respect to the housing.

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