A valve device capable of reducing pressure loss is provided. The valve device is provided with a valve main body 4 having a valve chamber 43 in which a valve body 42 is arranged, inflow outlets 44B and 44C, and communication holes 45B and 45C communicating the valve chamber 43 and the inflow outlets 44B and 44C, and a rectification member 5 arranged in the communication hole 45B. The communication hole 45B has a bent portion 46a where the center line of the communication hole 45B is bent, and the rectification member 5 is arranged in the bent portion 46a and has a corner portion 52 formed by an inner circumferential surface bent or curved at an angle larger than the angle of the bent portion 46a.

A valve body and a control valve including such a valve body, the valve body including an inlet, an outlet, a valve port defined therebetween, and a plurality of discrete flow channels extending between the inlet and the valve port to distribute fluid flow to the valve port in a manner that equalizes the velocity of fluid at the perimeter of the valve port. The plurality of discrete flow channels includes (i) one or more first flow channels arranged to direct a first amount of the fluid flow to a front portion of the valve port, (ii) one or more second flow channels arranged to direct a second amount of the fluid flow to a rear portion of the valve port, and (iii) one or more third flow channels arranged to direct a third amount of the fluid flow to one or both side portions of the valve port.

Example fluid valves having non-circular flow passageways are disclosed. An example fluid valve includes a body defining a fluid passageway between an inlet and an outlet, at least a portion of the fluid passageway between the inlet and the outlet has a generally non-circular cross-sectional shape when taken along a plane transverse to a direction of fluid flow, the cross-sectional shape includes a curved central axis, with outwardly curved end walls and curved lateral walls joining the curved end walls.

Example fluid valves having non-circular flow passageways are disclosed. An example fluid valve includes a body defining a fluid passageway between an inlet and an outlet, at least a portion of the fluid passageway between the inlet and the outlet has a generally non-circular cross-sectional shape when taken along a plane transverse to a direction of fluid flow, the cross-sectional shape includes a curved central axis, with outwardly curved end walls and curved lateral walls joining the curved end walls.

A closed-loop control valve module for closed-loop controlling a fluid flow is described, which comprises an electrical valve actuator motor, wherein a valve spindle comprising a frustoconical sealing section is displaceable by means of the valve actuator motor along a valve spindle axis and the frustoconical sealing section, depending on the position of the valve spindle, releases or separates off a flow channel connecting a fluid inlet and a fluid outlet. A pressure compensation channel is provided which, at least in the closed state of the closed-loop control valve module, connects an end of the valve spindle opposite the valve actuator motor to a pressure compensation area or the fluid inlet in terms of flow.

A closed-loop control valve module for closed-loop controlling a fluid flow is described, which comprises an electrical valve actuator motor, wherein a valve spindle comprising a frustoconical sealing section is displaceable by means of the valve actuator motor along a valve spindle axis and the frustoconical sealing section, depending on the position of the valve spindle, releases or separates off a flow channel connecting a fluid inlet and a fluid outlet. A pressure compensation channel is provided which, at least in the closed state of the closed-loop control valve module, connects an end of the valve spindle opposite the valve actuator motor to a pressure compensation area or the fluid inlet in terms of flow.

Example fluid valves having non-circular flow passageways are disclosed. An example fluid valve includes a body defining a fluid passageway between an inlet and an outlet, at least a portion of the fluid passageway between the inlet and the outlet has a generally non-circular cross-sectional shape when taken along a plane transverse to a direction of fluid flow, the cross-sectional shape includes a curved central axis, with outwardly curved end walls and curved lateral walls joining the curved end walls.

A valve stem includes a valve stem body connected to a valve stem head. The valve stem is for use with a choke valve. The valve stem body has first and second ends with an expandable valve stem tip extending from the second end of the valve stem body. The valve stem tip expands radially outwardly in an opening in the valve stem head to secure the valve stem head to the valve stem body.

A valve stem includes a valve stem body connected to a valve stem head. The valve stem is for use with a choke valve. The valve stem body has first and second ends with an expandable valve stem tip extending from the second end of the valve stem body. The valve stem tip expands radially outwardly in an opening in the valve stem head to secure the valve stem head to the valve stem body.

Methods, apparatus, and systems for valve trim apparatus for use with control valves are disclosed. An example apparatus includes a valve body including a fluid flow path between an inlet and an outlet. The example apparatus also includes valve trim positioned in the fluid flow path, the valve trim including first passageways that extend from the inlet to a first expansion cavity and second passageways that extend from the first expansion cavity to the outlet.