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  2. Rotork - Wikipedia

    en.wikipedia.org/wiki/Rotork

    Rotork plc is a British-based company manufacturing industrial flow control equipment. ... It made its first actuator in 1952. [3] In 1957 Rotork moved to Bath, ...

  3. Rotary actuator - Wikipedia

    en.wikipedia.org/wiki/Rotary_actuator

    A rotary actuator is an actuator that produces a rotary motion or torque. The simplest actuator is purely mechanical, where linear motion in one direction gives rise to rotation. The most common actuators are electrically powered; others may be powered pneumatically or hydraulically , or use energy stored in springs .

  4. Valve actuator - Wikipedia

    en.wikipedia.org/wiki/Valve_actuator

    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 ...

  5. Israel, Hamas reach ceasefire agreement designed to end 15 ...

    www.aol.com/news/israel-hamas-reach-ceasefire...

    Israel and Hamas agreed to a deal to halt fighting in Gaza and exchange Israeli hostages for Palestinian prisoners, an official briefed on the deal told Reuters on Wednesday, opening the way to a ...

  6. List of companies of the United Kingdom K–Z - Wikipedia

    en.wikipedia.org/wiki/List_of_companies_of_the...

    Rotork plc — is a manufacturer of industrial flow control equipment including valve actuators, gearboxes, control systems, instrumentation, and accessories. It is headquartered in Bath, Somerset. It was founded in the 1940s.

  7. Partial stroke testing - Wikipedia

    en.wikipedia.org/wiki/Partial_stroke_testing

    Partial stroke testing is an accepted petroleum industry standard technique and is also quantified in detail by regulatory bodies such as the International Electrotechnical Commission (IEC) and the Instrument Society of Automation (ISA).