A conversion kit creates a redundant hydraulic, pneumatic, or mechanical control functionality for low-torque, quarter-turn plug valves in remote production environments (i.e., rural or subsea pipelines). The conversion kit comprises at least one custom end cap fitted to the valve and comprising a socket receiving a rotator attachment. Each rotator attachment is in turn connected to a crossover which connects to a bracket remotely actuated via hydraulic, pneumatic, or mechanical control. The linear movement of the bracket and the attached crossover[s] is converted to rotational force which is transmitted through the rotator attachments to the at least one valve.

A flow regulating switch valve includes a valve core that includes a switch assembly configured to drive a diaphragm assembly to open or close a water outlet, and also includes a flow regulating assembly that comprises a rotating ring, a sliding block, and a magnet. A control key is configured to control the switch assembly. The rotating ring is connected to the control key and includes an inclined plane that transitions from high to low and is configured to drive the sliding block to slide up and down such that the sliding block drives the magnet to move up and down. The magnet is configured to control the diaphragm assembly to regulate a size of the water outlet.

A control mechanism locks open a spring-loaded valve and automatically releases the spring-loaded valve to close upon a predetermined lesser weight load being applied. The spring-loaded valve includes a flow valve, a valve lever that pivots between open and closed positions, and a valve spring that biases the valve lever to the closed position. The control mechanism includes a pivotal release lever having an engagement arm and an opposite load arm, and a release spring that biases the release lever from a blocking position with the engagement arm retaining the valve lever in its open position to a release position with the valve lever free to pivot past the engagement arm and to the closed position under the valve spring force. The load arm includes an additive-container support for a load of an additive fluid to be mixed with a carrier fluid whose flow is controlled by the valve.

A conversion kit creates a redundant hydraulic, pneumatic, or mechanical control functionality for low-torque, quarter-turn plug valves in remote production environments (i.e., rural or subsea pipelines). The conversion kit comprises at least one custom end cap fitted to the valve and comprising a socket receiving a rotator attachment. Each rotator attachment is in turn connected to a crossover which connects to a bracket remotely actuated via hydraulic, pneumatic, or mechanical control. The linear movement of the bracket and the attached crossover[s] is converted to rotational force which is transmitted through the rotator attachments to the at least one valve.

An actuating mechanism includes an actuating shaft, an actuated member, and an engaging and disengaging structure. The actuating shaft is configured to be rotatable. The actuated member can be actuated by the actuating shaft to rotate. The engaging and disengaging structure includes an actuating structure provided on the actuating shaft and an actuated structure provided on the actuated member. When the actuating structure engages with the actuated structure, the actuating structure can drive the actuated structure to rotate, such that the actuating shaft can drive the actuated member to rotate. Further, a set of actuating and actuated structures of the actuating mechanism can rotate and stop according to set angle requirements, such that a valve body can be actuated to connect and disconnect different fluid passages as required.

A fluidic valve unit having a plurality of rotary slide valves arranged in series and a servo motor for setting the rotary slide valves, wherein each of the rotary slide valves comprises a rotary slide arranged in a rotary slide housing and drivable via a driveshaft by means of the servo motor. It is provided in this case that each two successive ones of the rotary slide valves are mechanically connected to one another via a driver device for the setting by means of the servo motor, wherein the driver device comprises a driver projection arranged on a first of the two rotary slide valves.

A flow regulating switch valve includes a valve core that includes a switch assembly configured to drive a diaphragm assembly to open or close a water outlet, and also includes a flow regulating assembly that comprises a rotating ring, a sliding block, and a magnet. A control key is configured to control the switch assembly. The rotating ring is connected to the control key and includes an inclined plane that transitions from high to low and is configured to drive the sliding block to slide up and down such that the sliding block drives the magnet to move up and down. The magnet is configured to control the diaphragm assembly to regulate a size of the water outlet.

A flow regulating switch valve includes a valve core that includes a switch assembly configured to drive a diaphragm assembly to open or close a water outlet, and also includes a flow regulating assembly that comprises a rotating ring, a sliding block, and a magnet. A control key is configured to control the switch assembly. The rotating ring is connected to the control key and includes an inclined plane that transitions from high to low and is configured to drive the sliding block to slide up and down such that the sliding block drives the magnet to move up and down. The magnet is configured to control the diaphragm assembly to regulate a size of the water outlet.

An example control valve is disclosed herein and includes a valve body having a substantially axial fluid flow path extending from an upstream face surface to a downstream face surface of the valve body. A crank is disposed within the valve body, and a reciprocating valve trim, external to the valve body, is coupled to the crank and abuts the downstream face surface of the valve body.

A stopcock manifold system includes: a manifold provided with one or several stopcocks, each having a rotary opening/closing control apparatus with at least one finger or crank pin; a rotary mechanized actuator coupling part for each manifold, a rotary axis of the coupling part corresponding in use to a rotation axis of the control apparatus, the coupling part coupling with the stopcock by insertion of each crank pin into a closed notch in the coupling part, the closed notch of each coupling part receiving one of the crank pins of the corresponding stopcock, such that the crank pin is insertable into the corresponding coupling part by tilting the manifold and then straightening it, until it abuts on a first bearing point comprised of an edge of the closed notch; and a maintaining system that enables each coupling part to individually maintain the corresponding stopcock in place.