A wedge-shaped gate valve with a branching part formed to be open in a direction orthogonal to an inner flow path of a valve box having a coupling part on both sides, and a valve disk ascends and descends from the branching part via a valve stem to open and close an annular valve seat surface. At a boundary between the coupling part and the branching part, a reinforcing thickened part having a cylindrical, cone, or truncated cone shape with a diameter gradually reducing from the branching part toward the coupling part side is provided, and the thickened part is formed by taking, as an outer shape, a cylinder, a cone, or a truncated cone with an axis P2 that is eccentric from a center line P1 of the flow path to the branching part side and is parallel to or crossing the center line P1 as a rotation axis.

A wedge-shaped gate valve with a branching part formed to be open in a direction orthogonal to an inner flow path of a valve box having a coupling part on both sides, and a valve disk ascends and descends from the branching part via a valve stem to open and close an annular valve seat surface. At a boundary between the coupling part and the branching part, a reinforcing thickened part having a cylindrical, cone, or truncated cone shape with a diameter gradually reducing from the branching part toward the coupling part side is provided, and the thickened part is formed by taking, as an outer shape, a cylinder, a cone, or a truncated cone with an axis P2 that is eccentric from a center line P1 of the flow path to the branching part side and is parallel to or crossing the center line P1 as a rotation axis.

Various devices and techniques related to magnetically-actuated valves are generally described. In some examples, valves may include a valve body with a cavity. Valves may include a stem at least partially disposed in the cavity. Valves may include a valve member coupled to the stem. Valves may include a ferromagnetic actuation member disposed in the cavity. The ferromagnetic actuation member may be operatively coupled to the stem such that movement of the ferromagnetic actuation member actuates movement of the valve member between an open position and the closed position. Valves may include an actuator exterior to the valve body. The actuator may include a first magnetic pole section and a second magnetic pole section. A magnetic flux may flow from the first magnetic pole section through the ferromagnetic actuation member to the second magnetic pole section in a magnetic flux path through the interior portion of the valves.

A wedge-shaped gate valve with a branching part formed to be open in a direction orthogonal to an inner flow path of a valve box having a coupling part on both sides, and a valve disk ascends and descends from the branching part via a valve stem to open and close an annular valve seat surface. At a boundary between the coupling part and the branching part, a reinforcing thickened part having a cylindrical, cone, or truncated cone shape with a diameter gradually reducing from the branching part toward the coupling part side is provided, and the thickened part is formed by taking, as an outer shape, a cylinder, a cone, or a truncated cone with an axis P2 that is eccentric from a center line P1 of the flow path to the branching part side and is parallel to or crossing the center line P1 as a rotation axis.

A wedge-shaped gate valve with a branching part formed to be open in a direction orthogonal to an inner flow path of a valve box having a coupling part on both sides, and a valve disk ascends and descends from the branching part via a valve stem to open and close an annular valve seat surface. At a boundary between the coupling part and the branching part, a reinforcing thickened part having a cylindrical, cone, or truncated cone shape with a diameter gradually reducing from the branching part toward the coupling part side is provided, and the thickened part is formed by taking, as an outer shape, a cylinder, a cone, or a truncated cone with an axis P2 that is eccentric from a center line P1 of the flow path to the branching part side and is parallel to or crossing the center line P1 as a rotation axis.

A valve arrangement includes a valve body having a stem rotatably attached at least partially within the body, a handle in operable communication with the stem and configured to rotate the stem by turning the handle, and an actuation portion in contact with the stem and configured to move when the handle is turned and the stem rotated. The actuation portion includes a carrier having an inner bore. The inner bore receives at least a portion of the stem. The stem includes first and second thread portions. The first thread portion has a first thread pitch at least partially received within the inner bore. The second thread portion is in communication with a bonnet attached to the body with a second thread pitch and moves the stem with respect to the body. The second pitch is smaller than the first pitch.

In embodiments, a gate valve includes a valve body including a flow passage from a first opening to a second opening, and a gate channel having a first end intersecting the flow passage and a second end delineated by a third opening. A valve cover fits over the third opening. A cap fits over a valve cover opening. In embodiments, a valve cover includes a body with a second sealing surface protruding from a first sealing surface, both around an opening of the body. A cap has a third sealing surface to mate with the first sealing surface, and a fourth sealing surface congruent to the second sealing surface. In embodiments, a valve cover cap includes a body with a first sealing surface on an end of a wall. Pin flanges each have a pin hole having a pin hole axis oriented perpendicular to a center axis of the wall.

In embodiments, a gate valve includes a valve body including a flow passage from a first opening to a second opening, and a gate channel having a first end intersecting the flow passage and a second end delineated by a third opening. A valve cover fits over the third opening. A cap fits over a valve cover opening. In embodiments, a valve cover includes a body with a second sealing surface protruding from a first sealing surface, both around an opening of the body. A cap has a third sealing surface to mate with the first sealing surface, and a fourth sealing surface congruent to the second sealing surface. In embodiments, a valve cover cap includes a body with a first sealing surface on an end of a wall. Pin flanges each have a pin hole having a pin hole axis oriented perpendicular to a center axis of the wall.

This invention relates to a rotor gate valve 10 for use in high-pressure slurry systems. The valve 10 comprises a valve housing 12 defining a flow passage 14 therethrough for operatively receiving a fluid and an annular valve seat 16 of resilient material which is removably secured against the inner periphery of the flow passage 14.

This invention relates to a rotor gate valve 10 for use in high-pressure slurry systems. The valve 10 comprises a valve housing 12 defining a flow passage 14 therethrough for operatively receiving a fluid and an annular valve seat 16 of resilient material which is removably secured against the inner periphery of the flow passage 14.