Valve assembly
AssigneeManaged Pressure Operations Pte. Ltd.
InventorsAlexander John MacGregor, Christian Leuchtenberg, James Bisset
Life of this patent
Estimating the term…
Abstract
A valve assembly for use controlling flow of fluid into a drill pipe, the valve assembly having a valve body, a valve member and a valve seat, wherein a) the valve body has a main passage b) the valve member is movable between a closed position in which the valve member engages with a seat face of the valve seat to substantially prevent flow of fluid along the main passage, and an open position in which the valve member is spaced from the seat face, c) the valve seat is a separate part to the valve body.
Claims22
A drilling system including a tubular element and a valve assembly for use controlling flow of fluid into the tubular element, the valve assembly having a valve body, a valve member and a valve seat, wherein:
- a) the valve body has a main passage;
- b) the valve member is movable between a closed position in which the valve member engages with a seat face of the valve seat to substantially prevent flow of fluid along the main passage, and an open position in which the valve member is spaced from the seat face;
- and
- c) the valve seat is a separate part to the valve body
- wherein,
- the tubular element has a wall enclosing a main passage and a side port which extends through the wall from the exterior of the tubular element to the main passage,
- the side port includes a larger cross-sectional area portion and a smaller cross-sectional area portion, there being a shoulder in the portion of the wall of the tubular element surrounding the side port which extends between the larger cross-sectional area portion and the smaller cross-sectional area portion, and
- the valve seat is clamped between the valve body and the shoulder.
An assembly comprising:
- a rod having a longitudinal axis;
- a support part;
- a resilient biasing element;
- a nut, the nut being mounted on a screw thread around the rod;
- a locking collar mounted around the rod such that the biasing element extends between the support part and the locking collar,
- wherein the locking collar has a first locking formation which engages with a corresponding locking formation of the rod to substantially prevent rotation of the locking collar around the rod, the biasing element pushing the locking collar into engagement with the nut so that at least one locking formation on the nut engages with a second locking formation on the locking collar, and, as a result, the locking collar substantially prevents further rotation of the nut about the rod.
Dependencies are inferred from the claim text.