Abstract: A gate valve assembly comprises a valve body defining a flow bore and a gate opening, a gate movable between open and closed positions, and a pair of seat assemblies on opposite sides of the gate. Each seat assembly comprises an inner seat configured to engage the gate and seal against the valve body, an outer seat positioned radially outward and configured to engage the gate and seal against the valve body, and a spring biasing the inner seat toward the gate. The inner and outer seats operate independently such that when the gate is closed and upstream pressure is applied, the inner seat on the upstream side is energized against the gate and valve body by the spring and applied pressure acting on an annulus, while the outer seat on the downstream side is energized against the gate by force transferred through the gate from the upstream pressure area.

Abstract: A method includes installing an operator on a valve in an operational environment without disassembling the valve, where installing the operator includes disposing a valve shaft and an operator shaft in an end to end arrangement, coupling the valve shaft to the operator shaft via a sleeve including a plurality of shear components extending from an interior wall of the sleeve and into corresponding pre-configured recesses in the valve shaft and the operator shaft, retaining the plurality of shear components in the pre-configured recesses via one or more retaining mechanisms that secure the sleeve to the valve shaft and the operator shaft, and independently aligning the valve shaft and the operator shaft while transmitting torsional, translational, or torsional and translational loading through the plurality of shear components and not through the retaining mechanisms.

Abstract: A method includes disposing a first shaft and a second shaft in an end to end arrangement, positioning a sleeve over the end to end arrangement, coupling the first shaft to the second shaft via the sleeve and a plurality of shear components that engage the sleeve and partially recess into the first shaft or the second shaft, retaining the plurality of shear components in the partially recessed position via one or more retaining mechanisms, and independently aligning the first shaft and the second shaft while transmitting torsional, translational, or torsional and translational loading through the plurality of shear components and not through the retaining mechanisms.

Abstract: A method includes disposing a first shaft and a second shaft in an end to end arrangement, positioning a sleeve over the end to end arrangement, coupling the first shaft to the second shaft via the sleeve and a plurality of shear components that engage the sleeve and partially recess into the first shaft or the second shaft, retaining the plurality of shear components in the partially recessed position via one or more retaining mechanisms, and independently aligning the first shaft and the second shaft while transmitting torsional, translational, or torsional and translational loading through the plurality of shear components and not through the retaining mechanisms.

Abstract: A method includes disposing a first shaft and a second shaft in an end to end arrangement, positioning a sleeve over the end to end arrangement, coupling the sleeve to the first shaft via a first set of fasteners extending through a first set of radial holes in the sleeve and into the first shaft, coupling the sleeve to the second shaft via a second set of fasteners extending through a second set of radial holes in the sleeve and into the second shaft, and allowing the sleeve to self adjust the alignment between the first shaft and the second shaft while transmitting torsional, translational, or torsional and translational loading through the first set of fasteners and the second set of fasteners.

Abstract: A flow control device includes a valve body, a first port disposed on the valve body, a second port disposed on the valve body, a gate disposed within the valve body and configured to control a flow of a fluid between the first port and the second port, and a seat disposed between the gate and the valve body, the seat including a first surface configured to form a circumferential seal with the valve body and a second surface configured to form a face seal with the gate. A method includes receiving, by a sealing assembly forming a circumferential seal between a seat and a valve body, a first force from a collar disposed on the seat in response to a first movement of a gate, and moving, in response to receiving the first force, the sealing assembly in a first direction of the first force.

Abstract: An adjustable pipe spool includes an outer body, an inner body at least partially disposed within the outer body, an adjustment ring rotationally coupled to the inner body, a lock ring rotationally coupled to the outer body and engaging the adjustment ring, a rotation key maintained within the outer body by the lock ring, the rotation key extending into a slot in the inner body. The inner body is axially translatable with respect to the outer body between a retracted configuration and an extended configuration, and the inner body is rotationally adjustable with respect to the outer body in the extended configuration.

Abstract: A replaceable seat pocket assembly for a valve includes a first portion configured to couple the replaceable seat pocket assembly to a valve body within a recess of the valve, and a second portion coupled to said first portion and configured for engagement with said valve body. The replaceable seat pocket assembly may provide an interface between a valve seat and the valve body.

Abstract: A method includes disposing a first shaft and a second shaft in an end to end arrangement, positioning a sleeve over the end to end arrangement, coupling the sleeve to the first shaft via a first set of fasteners extending through a first set of radial holes in the sleeve and into the first shaft, coupling the sleeve to the second shaft via a second set of fasteners extending through a second set of radial holes in the sleeve and into the second shaft, and allowing the sleeve to self adjust the alignment between the first shaft and the second shaft while transmitting torsional, translational, or torsional and translational loading through the first set of fasteners and the second set of fasteners.

Abstract: A flow control device includes a valve body, a first port disposed on the valve body, a second port disposed on the valve inbody, a gate disposed within the valve body and configured to control a flow of a fluid between the first port and the second port, and a seat disposed between the gate and the valve body, the seat including a first surface configured to form a circumferential seal with the valve body and a second surface configured to form a face seal with the gate. A method includes receiving, by a sealing assembly forming a circumferential seal between a seat and a valve body, a first force from a collar disposed on the seat in response to a first movement of a gate, and moving, in response to receiving the first force, the sealing assembly in a first direction of the first force.