An actuated valve assembly includes a valve, an actuator, and a nut retention sleeve. The nut retention sleeve has a first bore portion sized to closely receive and rotate with a portion of a coupling member extending from the actuator and a second bore portion sized to closely receive and rotate with at least a portion of a stem nut assembled with a valve stem of the valve. The nut retention sleeve is slideable between a nut retaining position in which the second bore portion engages the stem nut to rotationally fix the stem nut with the coupling member, and a nut adjusting position in which the second bore portion is disengaged from the stem nut to permit rotation of the stem nut on the valve stem.

An electrohydraulic system having an adjustment device for a valve includes a drive apparatus, a control apparatus, and a preloading apparatus. In the event of a fault, the energy stored in the preloading apparatus can be transferred to the control apparatus such that a rotational motion of the control apparatus begins, which leads to the adjustment of the valve. The preloading apparatus comprises at least one elastic element, which is arranged adjacent to a control shaft of the control apparatus, is stationarily connected to the control shaft, and applies a torque to the control shaft.

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 valve assembly including a valve body with an inlet port and an outlet port, a flow passage and a valve element disposed within the flow passage, an actuator and a lockout mechanism configured to maintain the position of the valve assembly in an opened position or a closed position. The lockout mechanism can include at least one screw.

Disclosed is a valve assembly, having: a valve duct having an upstream end, a downstream end and a duct wall extending from the upstream end to the downstream end; a first conduit extending from a first end at the valve duct to a second end spaced apart from the first end, the first conduit terminating at a valve assembly component; and a washing filter that includes filer media, wherein the filter media extends into the valve duct to remove particles and provide a clean flow to the first conduit.

A powered actuating assembly configured for mounting on a tubular valve body. The actuating assembly includes: (a) an actuator unit configured to impart torque to the valve stem; (b) an actuator mounting plate with a first surface supporting the actuator unit and a second surface configured to engage and resist movement relative to the valve body; and (c) securing links configured to extend around a valve body surface opposite the mounting plate and secure the mounting plate to the valve body.

A monitoring system (500) of an on/off type actuator device (1) for activating a valve for fluid pipelines is described, the actuator device (1) being configured to move a valve member of said valve between a first position and a second position. The actuator device (1) comprises at least one fluid cylinder (6) configured to control a linear movement of an actuator rod (8). The monitoring system (500) comprises a plurality of sensors mounted on the actuator device (1) and configured to detect a plurality of operating parameters of the actuator device, and an electronic processing and control unit (50). The electronic processing and control unit (50) is configured to impart a micro-movement to the valve member, to detect signals indicative of the values of said operating parameters during said micro-movement of the valve member, and as a function of said values of said detected operating parameters to estimate if said actuator device (1) is capable of applying a torque or force value sufficient to make said valve member perform the entire movement from the first position to the second position. The micro-movement is such as to constitute only the start of movement of the movable member of the valve, corresponding only to the overcoming of mechanical clearances and dissipative and deformation effects internal to the actuator (1), and furthermore is such as not to substantially involve any alteration in the flow of fluid controlled by the valve. In this way, it is possible to estimate the state of health of the actuator device (1) without causing variations in the flow of fluid through the aforesaid valve.

To generate a setpoint signal to stroke a valve during a partial-stroke test, a first target is determined for the setpoint signal based at least on a travel displacement threshold, the travel displacement threshold corresponding to a desired extent of travel of the valve during the partial-stroke test; the setpoint signal is ramped from an initial value to the first target, during a first time interval; subsequently to the first time interval, the setpoint signal is maintained at the first target during a second time interval; a second target is determined for the setpoint signal based at least on the initial value; and during a third time interval subsequent to the second interval, the setpoint signal is ramped from the first target to the second target in a direction opposite to the ramping of the setpoint signal during the first time interval.

A valve member is mounted on a shaft to pivot within a fluid passage. A control selectively moves a piston in a linear direction to control a position of the valve member in the fluid passage. The piston causes a roller pin to move as the piston moves linearly. The roller pin is mounted in crank collars of a crank shaft such that movement of the roller pin causes the crank collars to rotate crank shaft rotating position, and the valve shaft. The roller pin is mounted within the crank collars by bearings. The bearings each have an outer race associated with a crank collar, an inner race associated with the roller pin, and bearing members separate the inner and outer race. There is a spring bias resisting movement of the inner races relative to said roller pin. An anti-ice system is also disclosed.

A system and method for regulating a flow of a fluid, wherein the system comprises a regulating device and a central axis, wherein the regulating device is adapted to establish at least one through-passage opening for the fluid, wherein each time a through-passage opening is situated between two transport ducts for the fluid, wherein a normal vector of a cross sectional surface of the at least one through-passage opening is oriented parallel to the axis, wherein a size of the cross-sectional surface is adjusted in dependence on the rotary speed of the regulating device turning about the central axis.