Q&A

Where are Rotork actuators made?

Rotork Controls specialises in electric valve actuators for all applications, it is the largest independent manufacturer in its sector. Manufacturing plants are located in the UK, USA, China, Malaysia, India, Germany and Spain.

How big is rotork?

We are a global company with 3,500 employees based in 39 countries.

What is electric valve actuator?

Electric valve actuators control the opening and closing of valves. Process control systems can operate electric actuators from a centralized system to deliver scheduled and programmed commands, thereby allowing organizations to automate the system and improve reliability.

What are the types of valve actuators?

There are several basic types of valve actuators: manual, electric, pneumatic, and hydraulic. Manual valve actuators do not require an outside power source. They use a handwheel or lever to drive a series of gears whose ratio results in a higher output torque compared to the input (manual) torque.

Who owns rotork?

Rotork
Rotork Controls/Parent organizations

What is a Rotork valve?

Rotork is the home of the flagship IQ intelligent electric actuator range. Electric actuator ranges also include the AWT for simplified control duties, ROM, ROMpak and Q direct drive actuators for small quarter-turn valves. Rotork actuators are compatible with a wide range of communication and process control systems.

What is a pneumatic valve actuator?

Pneumatic actuators valve Pneumatic actuators are designed to operate a piston within a closed cylinder. Pressure from an external air or gas source powers the actuator, moving the cylinder to fully open or close the valve, or partially modulate its open/close movement.

What are hydraulic valve actuators?

A hydraulic actuator consists of a cylinder or fluid motor that uses hydraulic power to facilitate mechanical operation. The mechanical motion gives an output in terms of linear, rotary or oscillatory motion. Because liquids are nearly impossible to compress, a hydraulic actuator can exert considerable force.

What is inching type valve?

Inching valves These valves offer more precise flow control compared to the on/off valves. Motorized actuator facilitates gradual opening and closing of the valve enabling some degree of control over the flow.

What is IQ actuator?

The 3rd Generation IQ Intelligent Actuator With the revolutionary dual stacked display, information about your plant and process is available at your fingertips, allowing unparalleled data analysis of the condition and operational status of the valve; data analysis that enables accurate asset management of your plant.

What is the difference between hydraulic and pneumatic actuators?

Here’s a summary of the main differences: Hydraulic Actuators use hydraulic fluid, meaning they can hold torque and force without continuous application of fluid pressure. Pneumatic Actuators are ideal for applications that require less power and more consistent, reliable, linear motion.

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Miscellaneous

Where are rotork actuators made?

What is a cp actuator?

CP range pneumatic actuators are a versatile, modular, scotch yoke design available in both double-acting and spring-return configurations. The actuator body is of rugged, ductile cast iron available in four body sizes. Cylinders are manufactured from carbon steel, electroless nickel-plated.

What is scotch yoke actuator?

A scotch yoke actuator may be defined as a mechanical device that converts linear force into torque to motorise quarter-turn valves. A single-acting scotch yoke actuator is made of three main components: housing containing the yoke mechanism, pressure cylinder containing the piston and spring enclosure.

What are the principal types of actuators used for valve operations in pneumatic circuits?

Pneumatic valve actuators adjust valve position by converting air pressure into linear or rotary motion. There are two main forms: the piston actuators and diaphragm actuators. Piston actuators are used when the stroke of a diaphragm actuator would be too short or the thrust is too small.

How do you size a pneumatic actuator?

When sizing an actuator, first consider your valve’s torque requirements. This includes: Break torque, or opening torque, refers to the force required to start moving a closed valve. Running torque, or mid-stroke torque, is the force required to maintain movement of the valve between the open and closed positions.

What are the three types of pneumatic actuators?

There are several basic types of pneumatic actuator: spring/diaphragm, piston, and rotary vane.

Where is Scotch yoke mechanism used?

The Scotch yoke mechanism is most commonly used in control valve actuators in high-pressure oil and gas pipelines, as well as in various internal combustion engines, such as the Bourke engine, SyTech engine and many hot air engines and steam engines. This mechanism does not create lateral forces on the piston.

What are GPGP and GH yoke actuators?

GP (pneumatic) and GH (hydraulic) range scotch yoke actuators are designed to provide a rotary, quarter-turn movement for either on/off or modulating duty. The rugged yet compact design is available with two different yoke designs. The classic symmetric yoke delivers peak torque at both ends of stroke.

Why choose rotrotork?

Rotork products and services are helping companies in the oil & gas, water and waste water, power, marine, mining, food, pharmaceutical and chemical industries around the world to improve efficiency, assure safety and protect the environment.

How do I choose the basic model of an actuator?

Each actuator has a series of cells which allow you to choose the basic model. All actuators have five cells to choose the basic model except the SM-6000, MV-1000, MV-1500 and LA-3300 Spring Return actuators, which have six. After determining the basic model, you can then add options. Each actuator has its own unique list of options.