Ads
related to: rotork motor operated valve actuator replacement parts diagram
Search results
Results From The WOW.Com Content Network
The blue valve body is visible in-line with the pipe. The valve actuator opens or closes the butterfly disc of the valve based on electrical signals sent to the actuator. Another valve actuator is visible in the background, with windows to indicate the valve position. A valve actuator is the mechanism for opening and closing a valve. Manually ...
The most common actuators are electrically powered; others may be powered pneumatically or hydraulically, or use energy stored in springs. The motion produced by an actuator may be either continuous rotation, as for an electric motor, or movement to a fixed angular position as for servomotors and stepper motors.
In 2014 Rotork acquired Young Tech Co. Ltd. (YTC), a Korean instrumentation manufacturer. [17] In 2014 Rotork also acquired Xylem Flow Control Limited (XFC), based in Wolverhampton, UK, a leading manufacturer of solenoid valves and instruments under the Midland-ACS, Alcon Solenoid Valves and Landon Kingsway brands for £18 million. [18]
Rotary valve for a double horn. In the context of brass instruments, rotary valves are found on horns, trumpets, trombones, flugelhorns, and tubas.The cornet derived from the posthorn, by applying rotary valves to it in the 1820s in France. [3]
Another broad classification of actuators separates them into two types: incremental-drive actuators and continuous-drive actuators. Stepper motors are one type of incremental-drive actuators. Examples of continuous-drive actuators include DC torque motors, induction motors, hydraulic and pneumatic motors, and piston-cylinder drives (rams). [4]
The motor may be attached to the end of the actuator. The drive motor is of typical construction with a solid drive shaft that is geared to the drive nut or drive screw of the actuator. Compact linear actuators use specially designed motors that try to fit the motor and actuator into the smallest possible shape.
Piston water pump, with a scotch yoke connection to its flywheel. This setup is most commonly used in control valve actuators in high-pressure oil and gas pipelines.. Although not a common metalworking machine nowadays, crude shapers can use Scotch yokes.
Partial stroke testing (or PST) is a technique used in a control system to allow the user to test a percentage of the possible failure modes of a shut down valve without the need to physically close the valve.