The invention relates to an actuator (10) for a process plant, comprising an actuating valve (14) and an actuating drive (12) which has an actuating drive housing (20) and a drive rod (18) mounted in the actuating drive housing (20), wherein the actuating drive housing (20) is connected to a valve housing (22) of the actuating valve (14) via a connecting housing. The invention is characterized in that a second rod coupling (46) and an adjusting rod (42) are provided, the adjusting rod (42) being provided in the region between the drive rod (18) and the valve rod (38), one rod coupling (44, 46) coupling the adjusting rod (42) to the drive rod (18), and one rod coupling (44, 46) coupling the adjusting rod (42) to the valve rod (18).

The invention relates to an actuator (10) for a process plant, comprising an actuating valve (14) and an actuating drive (12) which has an actuating drive housing (20) and a drive rod (18) mounted in the actuating drive housing (20), wherein the actuating drive housing (20) is connected to a valve housing (22) of the actuating valve (14) via a connecting housing. The invention is characterized in that a second rod coupling (46) and an adjusting rod (42) are provided, the adjusting rod (42) being provided in the region between the drive rod (18) and the valve rod (38), one rod coupling (44, 46) coupling the adjusting rod (42) to the drive rod (18), and one rod coupling (44, 46) coupling the adjusting rod (42) to the valve rod (18).

Embodiments of the present disclosure relate to a choke valve that includes a choke body, a choke trim disposed in the choke body, where the choke trim is configured to adjust a cross-sectional area of a flow path in the choke body to adjust a fluid flow through the choke valve, a needle of the choke trim disposed in the flow path of the fluid flow, where the needle includes a first portion having a superhard material, a seat of the choke trim, where the needle is configured to move along an axis extending through an opening of the seat to adjust the fluid flow through the choke valve.

A valve includes an actuation assembly including a drive device that generates a driving force, a needle shaft connected, at one end thereof, to the drive device to receive the driving force from the drive device and perform linear motion, a needle nut that is coupled to the drive device and that has an empty space through which the needle shaft passes, so as to guide the linear motion of the needle shaft, and a valve disc coupled to an opposite end of the needle shaft, a body is coupled with the actuation assembly and that has a valve opening inside, the valve opening being selectively opened or closed as the valve disc, which is inserted into the body in which water flows, performs linear motion, and a clip that fixes the body and the actuation assembly such that the body and the actuation assembly are not separated from each other.

Vacuum machining system (1), comprising a vacuum chamber (10) and a vacuum regulating valve (20). The vacuum valve (20) has a first valve seat (21a), which has a first valve opening (22a) defining a first opening axis (O) and a first sealing surface extending around the first valve opening (O), and a first valve plate (23a) with a first contact surface corresponding to the first sealing surface. The vacuum machining system further comprises a drive unit (30), which is designed in such a way and is coupled to the first valve plate (23a) in such a way that the latter can be moved at least from an open position to a closed position and back again. The first valve seat (21a) is arranged within the vacuum chamber (10) and divides the vacuum chamber (10) into a main process chamber (11) for machining the substrate and into a secondary process chamber (12). The first sealing surface extends orthogonally to the first opening axis (O) and points in the direction of the secondary process chamber (12). The first valve plate (23a) is movably arranged in the secondary process chamber (12).

A check valve for a backflow prevention assembly includes a linkage with a platform having a proximal end and a distal end and a first coupling member supported by the platform for engaging a bias assembly. A stop protrudes from the proximal end of the platform to engage a frame of the check valve for limiting travel of the platform. A branch depends from the proximal end of the platform, the branch having a hinge pin configured to nest in a slot defined by check valve. A second coupling member depends from the distal end of the platform for engaging a valve member.

A valve body unit is configured to be disengaged from a stem by moving the stem and the valve body unit to a valve seat side in a state where a bonnet is separated from the valve seat, thereby pushing a replacement ring such that the replacement ring moves through the bonnet while decreasing in diameter and then drops down onto a ring dropping portion in the free state, then moving the stem, the valve body unit, and the replacement ring to an opposite side to the valve seat side such that a first surface comes into contact with a second surface and the ring dropping portion comes into contact with the replacement ring, and in this state, moving only the stem to the opposite side to the valve seat side such that the connection formed by a connecting mechanism between the stem connection portion and the stem is released.

A flow control valve includes a housing having a valve chamber, an inlet port, an outlet port, and a valve seat. In addition, the flow control valve includes a valve body disposed in the valve chamber, an actuator having an output rotational shaft, a feed screw mechanism to convert forward and reverse rotational motion of the output rotational shaft to axial reciprocating motion of the valve body, a backlash preventive spring positioned between the housing and the valve body, and a spring supporting device formed on the housing and having a spring seating surface. The spring seating surface is spaced from the valve seat in an opening direction of the valve body.

A waste gate assembly for a turbocharger includes a valve member formed by a valve shaft and an arm attached to an end of the shaft, the arm defining a through bore, an inner surface of the through bore defining an arm groove therein. A poppet for the valve has a pin whose outer surface defines a pin groove. A generally polygonal retaining ring of elastically deformable wire is installed partially in the arm groove and partially in the pin groove to retain the poppet on the pin, thereby attaching the poppet to the arm of the valve member. An anti-rotation feature prevents relative rotation of the poppet about the pin axis. Vertices of the retaining ring are in the arm groove, while sides of the retaining ring are in the pin groove. Once the retaining ring is pre-installed in the arm groove of the arm, the arm can be assembled to the poppet by a push-to-connect process.

A connecting fitting is disposed on an upper face of a valve plate and is fixed to the connecting shaft. A first close-contact mechanism portion is formed at a portion where the connecting fitting and the connecting shaft are in contact with each other, a second close-contact mechanism portion is formed at a portion where the connecting fitting and the valve plate are in contact with each other, and a third close-contact mechanism portion is formed at a portion where the lower end of the valve plate and the lower end of the connecting shaft are in contact with each other. By bringing the valve plate and the connecting shaft toward each other with the close-contact mechanism portions of three vertical positions, a hole front face of a connection hole and a shaft front face of a connecting shaft are brought into close contact with each other.