Electric Actuators Articles

Electric actuators, also known as electric machines are electromechanical devices that convert electrical energy into mechanical torque. No oil is used which makes it a very clean type of actuator. This is usually enabled through the interaction of magnetic fields and current-carrying conductors to create force. In some cases, electric actuators can also be used as generators to convert mechanical energy into electrical energy.

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Rotork Intelligent valve actuation for solar power plants

The Andasol 1 plant in the Spanish province of Granada is Europe’s first parabolic trough power plant and the world’s largest solar power plant. The plant’s 510,000m2 collector surface area provides a generating capacity of 50MW, enough to meet the annual electricity demand of 50,000 households or 200,000 people. The success of Andasol 1 and sister...
Valve User Issue 11

An Introduction to Networks Control systems for valve actuators

By Rotork Controls Ltd Zhenhai oil tank farm at the port of Ningbo, eastern China. More than 200 Rotork IQ actuators, most with Pakscan 2-wire digital control are installed on this 33m barrel capacity site. Traditional valve actuator control systems use individual cables for each signal to be transmitted from the field to the control room. As...
Valve User Issue 1

Flooding proves the watertight case for Rotork Actuators

There was extensive flooding in the UK this summer Rotork’s ‘double-sealed’ electric valve actuator enclosure design has proved its worth in the aftermath of the disastrous flooding of the Severn Trent Mythe water treatment works at Tewkesbury in Gloucestershire (UK). In what has been described as "a once in a two hundred and fifty year event", ...
Valve User Issue 4

Rotork completes major valve actuation upgrade at one of Severn Trent’s water treatment works

Rotork IQ and IQT range intelligent electric valve actuators have been installed as part of a multi-million pound upgrade and modernisation programme awarded to Interserve Project Services at one of the Severn Trent Water Treatment Works. A total of 136 actuators have been fitted by Rotork’s Site Services Division to existing valves on Rapid Gra...
Valve User Issue 6

Australia’s ‘Droughtbuster’ scheme chooses Rotork

Water is front page news in Australia as it has become obvious that drought, climate change, population and consumption growth have combined to make the country’s future water security a major social, environmental and political issue. The Northern Pipeline Interconnector is a key part of the Queensland state government’s emergency drought strat...
Valve User Issue 6

Rotork’s new CVA, mounted to a Metso valve

Rotork has launched a revolutionary new electric actuator for the operation of process control valves. The Rotork CVA range provides continuous, repeatable modulating control with a programmable fail to position option. Operating on an industry-standard 4-20mA control signal or digital bus, the resolution, repeatability and hysteresis performance o...
Valve User Issue 7

Pakscan digital valve control goes wireless

Starting with site trials in 2009, market-leading valve actuation specialist Rotork is extending the capabilities of the globally acknowledged Pakscan digital control system with the addition of a wireless option. The modular nature of the latest Rotork Pakscan P3 master station now allows the user to have the choice of a fully wired loop for contr...
Valve User Issue 9

New Flowserve Software Simplifies Actuator Configuration, Diagnostics: Flowserve Dashboard Allows Bluetooth® Connectivity with Limitorque MX and QX

Flowserve Corporation has announced the release of Flowserve Limitorque MX/QX dashboard software, a program that allows customers to communicate with Flowserve Limitorque MX and QX actuators via Bluetooth® for quick and easy remote configuration and diagnostics, both online and offline. "The Flowserve Limitorque MX/QX dashboard software helps o...
Valve User Issue 10

South East Water awards valve actuation framework agreement to Rotork

Rotork’s position as the leading supplier of electric valve actuation products to the UK’s water industry has been further strengthened by the award of a framework agreement by South East Water. The framework will run for three years, with the option to extend for a total of five years, and covers Rotork’s IQPro, IQTPro, AWT and Q ranges of mult...
Valve User Issue 10

Rotork introduces compact electric actuator solution for marine valve applications

The new Rotork ROMpak range of electric actuators has been introduced to offer the marine industry a lightweight, economical and compact solution for the operation of quarter-turn valves and dampers, with a comprehensive choice of control, instrumentation and diagnostic options. These options now enable shipboard valve functions to be set-up, contr...
Valve User Issue 10

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