valve actuator Articles

  • Wireless control for valve actuators

    At first glance, wireless network control and its application to valve actuation might not impress many plant engineers as being an earthshaking technological development. Yet, because of the tremendous cost savings that can result, the benefits associated with its adoption can be dramatic – an evolutionary achievement that is likely to change the process plant landscape for decades to ...


    By Rotork

  • Valve actuation and control in the modern refinery

    Introduction The Reliance refinery at Jamnagar in India is one of the largest single refinery sites in the world and virtually all of its valves are motorised with Rotork actuators. Almost 3000 Rotork IQ intelligent valve actuators were installed during the construction of the original refinery, tank farm and power station in the late 1990s, together with a Rotork Pakscan 2E two-wire ...


    By Rotork

  • Control valve actuators: Their Impact on control and variability

    Sector: Oil & gas Category: Electric actuators Products: CVA Electric control valve actuators provide excellent performance and are ideal for oil and gas wells in remote production fields. Instrument air supply systems are costly and require significant energy to run. If mains power isn't available, an instrument air supply isn't ...


    By Rotork

  • How to Size Diaphragm Actuated Control Valves

    There are many options and several conditions that need to be considered when purchasing the right valve for a job. The more information from the field, the better the choice will be. The ultimate goal is to have the best valve for the job required at the most economical price. While it is not rocket ...


    By Singer Valve Inc.

  • Control valve actuators: their impact on control & variability

    New electric control valve actuators provide significant control and reduced variability benefits over compressed air actuators in a wide range of process applications, resulting in superior control performance, fewer maintenance problems and energy savings. In a process plant, the general function of a control valve is to restrict the opening of the valve so it affects the flow or pressure of ...


    By Rotork

  • Asset management for actuated valves in the 21st Century

    The key benefit of effective asset management for the actuated valve end user is an economic one. The implementation of preventative maintenance as the main activity in the asset management programme quickly translates into cost savings for the plant operator. This and many other benefits are facilitated and enhanced by the increased functionality inherent in modern intelligent electric valve ...


    By Rotork

  • Sizing and Selection for Diaphragm Actuated Control Valves

    In order to size a valve correctly one must be sure they understand what the valve is required to do, what the system parameters are, and then use this information to pick the valve that will do a proper job while keeping the economic desires in mind.   While graphs, charts and even software calculators are necessary, the person responsible for sizing needs to have a clear ...


    By Singer Valve Inc.

  • Rotork actuators with profibus

    Introduction Rotork IQPro intelligent electric actuators with Profibus two-wire digital control provide an adaptable, reliable and economical solution for automated valve monitoring and control, as illustrated by examples in the UK water and sewage treatment industries. Two recent projects undertaken by Wessex Water serve to illustrate the benefits of adopting Profibus-enabled ...


    By Rotork

  • Valve actuation at the world’s largest flow metering calibration facility

    Currently nearing completion, EuroLoop will be the world’s largest test site for industrial flow meters. Two separate circuits are available, for testing both gas meters and liquid meters. Both circuits are fully automated, making extensive use of electric and pneumatic actuators with sophisticated control systems. Situated by the New Meuse River in Rotterdam, EuroLoop will be the ...


    By Rotork

  • Rotork fluid power valve actuators in the Chilean pipeline industries

    Introduction Pipeline, storage and associated applications in Chile serve to illustrate Rotork’s scope of supply for fluid power valve actuators in a range of different technologies to suit diverse and challenging environments. LNG import and distribution Rotork fluid power valve actuators have been installed throughout a major new LNG (Liquefied ...


    By Rotork

  • Rotork valve actuators at hub of automated flood alleviation scheme - Case Study

    Overview An extended scope contract performed by Rotork Site Services has successfully delivered full automation of a flood alleviation scheme protecting the historic town of Cardigan in West Wales. The project involved replacing unreliable actuators from another manufacturer, installing a PLC control cabinet and interfacing with the existing river level sensor and telemetry system. ...


    By Rotork

  • Asset management in the water industry - the valve actuator`s perspective

    Sector: Water & Effluent Treatment Category: Electric Actuators, Control Networks, Services Products: IQ3 Standard, IQ Insight 2, Pakscan, Retrofit The water and effluent treatment industries have not been slow to recognise the benefits of effective asset management resulting from the gathering and analysis of accurate and relevant data ...


    By Rotork

  • Intelligent electric valve actuation on China’s West-East Pipeline - Case Study

    Overview The West-East Pipeline (WEPP) network is described as the largest and most significant gas industry project ever planned in China. Intended for the development of the western regions in China, the project involves construction of four gas pipelines connecting the eastern markets of China with the western resources. Thousands of kilometres of pipelines travel along varied terrains ...


    By Rotork

  • Top 10 Reasons to Choose a Diaphragm Actuated Control Valve

    Every water system typically consists of piping networks that distribute water from a source or storage reservoir to the end users. This frequently requires miles of piping mains along with pumps systems and controls that all have to be monitored and controlled somehow. Whether this control is to regulate pressure, a level or a flow, this usually will require some form of a ...


    By Singer Valve Inc.

  • How electric control valve actuators can eliminate the problems of compressed air as a power medium

    Today, a new major technological advance is available that can help control-valve users avoid many of the problems and inefficiencies associated with using compressed air as a power medium. The new solution uses electric power and eliminates dependence on compressed air. This totally electric solution is appropriate and cost-effective for a wide variety of control-valve applications, including ...


    By Rotork

  • Development of small-sized flexible pneumatic valve using vibration motor and its application for wearable actuator

    Owing to the recent ageing and decreasing birth rate, providing nursing care to the elderly has become very crucial. As a result, it is necessary to develop wearable systems to aid in nursing care. To realise such a system, we require not only wearable soft actuators, but also a compact and flexible control valve. The purpose of our study is to develop a flexible, lightweight and compact control ...


    By Inderscience Publishers

  • How electric control valve actuators can eliminate the problems of compressed air as a power medium

    Sector: OH & gas Category: Electric actuators Products: CVA Today, a new major technological advance is available that can help control-valve users avoid many of the problems and inefficiencies associated with using compressed air as a power medium. The new solution uses electric power and eliminates dependence on compressed ...


    By Rotork

  • What You Need to Know about Electronic Automation of Hydraulically-operated, Diaphragm-actuated Control Valves

    Hydraulically controlled, diaphragm-actuated control valves are the mainstay of the waterworks industry to control pressure, flow, level, pump control, and at times to meter. These automatic control valves are controlled by pilots to do specific tasks and are mainly single-set-point systems. With the need to remotely actuate and control the valves and the applications becoming more complex, ...


    By IWA Publishing

  • Optimal closure of system actuators for transient control: an analytical approach

    The effect of downstream valve closure scheduling was analyzed to find optimal closure parameters that lead to the minimal maximum pressure head in the water distribution system. Several valve closure strategies were explored, combining the known valve performance curve (change in flow as a function of change in valve's opened area) with unknown valve closure curve (change in valve's opened ...


    By IWA Publishing

  • Electro-hydraulic actuators deliver improved safety at India’s tank farms

    Following an accidental fire at the IOCL Jaipur Terminal, an extensive review of safety measures recommended by the MB Lal Committee has resulted in the introduction of failsafe actuators for critical tank farm applications. These valves, known as ROSOV (Remote Operated Shut-off Valves), now provide tank overfill protection at the majority of storage facilities owned by the Indian oil industry. ...


    By Rotork

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