Electric Actuators

An electric actuator is an electromechanical device that converts electrical energy into rotary or linear motion and controls the position of the operating element of an isolation or control valve. This page presents electric actuators for pipeline valves used in the oil and gas industry, power generation, water and wastewater utilities, chemical processing and district heating. We also provide valve control and automation systems, including remote indication of pipeline valve status.

We select each actuator for the required torque, valve type, process medium and operating conditions, and supply equipment throughout Ukraine.

Buy Electric Actuators in Ukraine

Our catalogue includes electric actuators for gate valves, control valves, ball valves, high-pressure globe valves and butterfly valves – from compact quarter-turn units to explosion-proof multi-turn actuators for trunk pipelines.

When you order from us, you receive:

• Engineering selection of the actuator for a specific valve, including torque, number of turns and mounting interface.
• Consultation with an engineer before placing the order, helping you avoid paying for unnecessary functions.
• Official equipment documentation, data sheets and certificates, including documents required under the Technical Regulation on equipment and protective systems intended for use in potentially explosive atmospheres.
• Made-to-order supply throughout Ukraine within the shortest possible lead time.

If the required model is not available from stock, we will arrange a factory order and specify both the delivery schedule and price in the contract.

Electric Actuator Prices

The price of an electric actuator depends on several technical parameters, so there is no single standard price per unit in this product category. The final cost is affected by:

• Actuator type: quarter-turn, multi-turn or linear.
• Rated torque in Nm: higher torque normally means a higher equipment cost.
• Power supply: 230 V, 380 V or 24 V DC.
• Execution: standard industrial or explosion-proof (Ex).
• Control type: relay control, intelligent control with a fieldbus interface such as Modbus or PROFIBUS, HART communication, or an integrated positioner.
• Enclosure protection rating: IP67 or IP68 for outdoor installations and chambers that may be flooded.

To receive an accurate quotation, send us a completed enquiry form or describe your application, including the valve type, required torque, operating conditions and duty cycle. Our manager will prepare a technical and commercial proposal with several options in different price categories.

What Is an Electric Actuator?

An electric actuator is an electromechanical device that automatically opens, closes or positions a pipeline valve instead of using a manual handwheel. It typically consists of an electric motor, gearbox, control unit, limit switches and torque switches. Modern models may also include a microprocessor-based controller.

In practical terms, an actuator replaces manual valve operation. It receives a command from the control room and moves the valve to the required position within seconds or minutes, depending on the application. This reduces operational risk, limits the influence of human error and allows the valve to be integrated into the plant control system, SCADA or DCS.

Where Are Electric Actuators Used?

Electric actuators are a basic component of pipeline and industrial valve automation. Their main areas of application include:

1. 1. Oil and Gas Industry. Electric actuators are used on oil and gas transmission pipelines, pumping stations, gas distribution facilities and oil and gas production and treatment sites. These applications commonly require explosion-proof actuators with enhanced ingress protection, a wide operating temperature range and high reliability. High-pressure valves may require special actuator versions with reinforced gearboxes.
   2. Nuclear Power. Electric actuators for nuclear power plants are used on auxiliary and secondary pipelines, cooling systems, technical water supply, blowdown systems and heat-transfer-medium preparation systems. Such equipment may need to meet increased requirements for seismic resistance, certification, service life and nuclear-industry documentation. Our portfolio includes SCHIEBEL actuators with proven references at nuclear facilities in Europe.
   3. Power Generation and District Heating. Applications include combined heat and power plants, boiler houses and district heating substations, where electric actuators control steam and water valves, including high-pressure valves installed on steam pipelines.
   4. Water Supply and Wastewater Treatment. Electric actuators are used at pumping stations, water treatment plants, wastewater facilities and water intake structures.
   5. Chemical and Petrochemical Industry. For acids, alkalis, aggressive gases and chlorine-containing solutions, actuators are selected with corrosion-resistant housings, additional polymer or epoxy coatings and seals made from suitable special elastomers. Enclosure protection normally starts from IP67, while IP68 versions may be required where direct contact with water or temporary immersion is possible.
   6. Mining and Metallurgy. Electric actuators are also used at mining and mineral-processing facilities, steelworks and other heavy-industry sites where reliable automated valve operation is required under demanding conditions.

Each industry has its own requirements concerning housing materials, ambient temperature, explosion protection and certification. For this reason, we select actuators for the specific project rather than simply choosing a model from a catalogue.

Types of Electric Actuators

Electric actuators are classified according to the movement of the output element. This determines which valve types they can operate.

Multi-Turn Electric Actuators

Multi-turn electric actuators rotate the output shaft through tens or hundreds of revolutions. They are used with wedge and knife gate valves, stem-operated control valves, sluice gates and water-control structures. Depending on the model, the torque range may extend from 10 to 32,000 Nm. Multi-turn actuators are widely used in oil and gas infrastructure and water utilities.

Quarter-Turn Electric Actuators

Quarter-turn actuators rotate the output shaft through approximately 90 degrees, which is the movement required to open or close a ball valve, butterfly valve or damper. They are suitable for applications requiring reliable on-off operation and, depending on the design, relatively fast isolation of the flow.

Linear Electric Actuators

Linear electric actuators generate linear movement of the valve stem. They are used with control valves where accurate positioning according to stem travel is required. Typical applications include district heating, thermal power plants and chemical processing systems where the flow of the process medium must be regulated precisely.

Explosion-Proof Electric Actuators

Explosion-proof electric actuators are designed for operation in areas where an explosive atmosphere may be present, including oil and gas facilities, petrochemical plants, coal-chemical facilities and storage areas for flammable liquids. The housing and electrical components may be designed according to protection concepts such as Ex d, Ex de or Ex e and supplied with the relevant ATEX and IECEx markings and certificates. This category includes certified SCHIEBEL electric actuators for potentially explosive atmospheres.

For the Ukrainian market, the equipment must comply with the Technical Regulation on Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres, which is the Ukrainian equivalent of the European ATEX Directive.

Actuators bearing valid ATEX/IECEx markings and accompanied by the manufacturer’s documentation undergo the Ukrainian conformity assessment procedure and may be used at industrial facilities in Ukraine located in hazardous areas without additional restrictions.

Upon request, we provide a complete documentation package, including:

• Type Examination Certificate;
• Notification of Conformity to Type Based on Product Quality Assurance;
• Declaration of Conformity;
• Operating Instructions.

Electric Actuators by Valve Application

In addition to classification by output movement, actuators are grouped according to the valves they operate. This is important during selection because the mounting flange and output drive must match the valve. Multi-turn interfaces are typically selected according to ISO 5210, while quarter-turn mounting interfaces are commonly selected according to ISO 5211.

Electric Actuators for Industrial Valves

This is a general category covering electric actuators for isolation and control valves. It includes standard quarter-turn and multi-turn models. Selection is based on torque, supply voltage, duty requirements and control signal, such as relay control, a 4–20 mA analogue signal or a digital fieldbus interface.

Electric Actuators for Control and Isolation Valves

Electric actuators for control and isolation valves are generally linear actuators or multi-turn actuators with a suitable output speed and number of turns. Accurate positioning is critical for modulating valves, so these actuators are often equipped with an integrated positioner and position feedback.

Electric Actuators for Gate Valves

Gate valves are normally operated by multi-turn actuators selected with an appropriate torque margin. The actuator must reliably seat the valve in the closed position without exceeding the permitted valve load. The required safety factor is determined using the valve manufacturer’s data and the actual operating conditions. Trunk pipeline applications often require high-torque, explosion-proof models.

Electric Actuators for High-Pressure Globe Valves

High-pressure globe valves are installed at oil and gas facilities, in high-pressure steam systems, hydraulic lines and nuclear power plant circuits. These valves require electric actuators with a suitable gearbox, sufficient torque and accurate torque limiting to prevent excessive loading and damage to the valve seat. Multi-turn actuators with integrated torque switches are commonly used, with optional analogue position feedback for remote monitoring. In hazardous areas, Ex d or Ex de versions are selected with the required certification package.

Electric Actuator Control and Valve Automation

An electric actuator can be operated locally, using controls installed on the actuator housing or a removable local control unit, and remotely from a control room, PLC, SCADA or higher-level plant control system. Remote operation is especially important at industrial facilities because it allows personnel to control valves without visiting the installation site and integrates the valves into a unified plant automation system.

Two common remote-control methods are available:

Discrete Control

Commands are transmitted using separate OPEN, CLOSE and STOP signals. This is the simplest control arrangement and can be implemented using an operator push-button station or discrete PLC outputs. It is suitable for systems where basic two-position control is sufficient and detailed telemetry is not required.

Control via Modbus

Commands and operating data are transmitted over a digital communication line using Modbus RTU over RS-485 or Modbus TCP over Ethernet. In addition to control commands, the operator may receive actuator and valve data such as valve position as a percentage, current torque, motor temperature, number of operating cycles, event or fault logs, and the status of limit and torque switches. Modbus is widely used for integration with SCADA systems at industrial facilities in Ukraine.

Remote valve status indication can also be provided. The operator panel or SCADA system may display whether each valve is open, closed or in an intermediate position, as well as actuator status, power availability and diagnostic messages. This allows the operator to monitor each actuator in real time without physically inspecting the valve at the site.

When developing a valve control and automation system, we help determine the most suitable architecture during the selection stage: the communication interface, control logic to be implemented in the actuator and functions to be handled at the PLC or SCADA level. If the facility already uses a specific standard, such as Modbus, PROFIBUS DP, HART or FOUNDATION Fieldbus, we select an actuator with the appropriate interface wherever possible, avoiding unnecessary converters and gateways.

How to Select an Electric Actuator

We select an electric actuator using six main parameters. The following checklist is used when preparing a technical proposal:

1. 1. Valve type. Ball valve, control valve, gate valve or butterfly valve. The valve design determines whether a quarter-turn, linear or multi-turn actuator is required.
   2. Valve torque or thrust. The actuator rating must cover the actual opening and closing load with an appropriate engineering margin. Selecting an actuator too close to the minimum required value may reduce reliability and service life.
   3. Full-stroke operating time. This is the time required for complete opening or closing. Emergency isolation applications may require short operating times, while modulating applications may use slower movement for improved control.
   4. Operating conditions. Ambient temperature, humidity, dust, potential explosive atmosphere, corrosive agents and the possibility of flooding or immersion.
   5. Control method. Simple relay-based OPEN/CLOSE control, a 4–20 mA signal for modulating duty, or an industrial fieldbus interface for integration into the plant control system.
   6. Power supply. Typical options include single-phase 230 V, three-phase 380 V and 24 V DC, depending on actuator size, site standards and the required backup concept.

If any of these parameters are unclear, send us an enquiry form. Our engineer will review the available data and help determine the required actuator configuration.

Advantages of Electric Actuators

Compared with pneumatic and hydraulic actuators, electric actuators offer several important advantages:

• • No separate pneumatic or hydraulic utility is required. There is no need for a compressor, air receiver, air piping, dryer or hydraulic power unit.

• • Straightforward integration into industrial control systems. Digital interfaces such as Modbus, PROFIBUS and HART are available for modern actuator configurations.
  • Accurate positioning. An electric actuator can maintain the commanded position without the drift that may occur in some pneumatic control arrangements.
  • Energy efficiency. Power is mainly consumed during movement, while standby consumption is comparatively low.
  • Wide torque range. Electric actuation can cover applications from a few Nm to many thousands of Nm using a consistent control concept.
  • Long service life. Industrial actuators from established European manufacturers are designed for demanding duty when correctly selected, installed and maintained.

Why Customers Choose Us

• • Engineering selection for the application, not simply the equipment available in stock. Our engineer reviews the enquiry data and proposes a technically justified configuration.

• • Cooperation with leading manufacturers. Our portfolio includes SCHIEBEL solutions with proven quality and the required documentation for supply in Ukraine.
  • Technical support at every stage. We assist with configuration, parameter setting and integration into the control system.
  • Delivery throughout Ukraine. The delivery method is agreed individually, including collection, transport companies or dedicated road transport for large consignments.
  • Complete documentation. Available equipment documentation includes data sheets, operating manuals, declarations and conformity certificates, depending on the model and project requirements.

Frequently Asked Questions

Is there a warranty for electric actuators?

Yes. Electric actuators are supplied with the manufacturer’s warranty. The manufacturer’s warranty for electric actuators is 24 months from the date the order is shipped by the manufacturer.

Do you deliver electric actuators throughout Ukraine?

Yes. We supply equipment throughout Ukraine. Compact actuators can be dispatched through freight carriers, while oversized items and large consignments may be delivered by dedicated road transport. Stock items can be shipped after payment, subject to availability. Delivery dates for factory orders are specified in the contract.

Which electric actuator should I choose?

There is no universal solution because the correct actuator depends on the valve and operating conditions. A ball valve or butterfly valve normally requires a quarter-turn actuator, a gate valve requires a multi-turn actuator, and a modulating control valve may require a linear actuator or a multi-turn actuator with a positioner. For hazardous oil, gas or petrochemical areas, an explosion-proof version is required. The safest way to avoid a selection error is to complete an enquiry form and have the configuration checked by an engineer.

Can an electric actuator be integrated into a plant control system?

Yes. Modern electric actuators can support industrial communication protocols such as Modbus RTU/TCP, PROFIBUS DP, HART and FOUNDATION Fieldbus. This enables remote operation from the control room and real-time transmission of data such as valve position, torque, temperature and cycle count. Please specify the protocol used at your facility when requesting a quotation.

Do you supply electric actuators for the oil and gas industry?

Yes. Oil and gas is one of our key areas of expertise. We supply explosion-proof electric actuators with ATEX/IECEx markings, including Ex d, Ex de and Ex e versions, with a wide operating temperature range down to −60 °C for northern sites.

How long does actuator selection take?

Selection usually takes from several hours to five working days, depending on the complexity of the application and the completeness of the technical data. When the valve parameters are known and no special requirements apply, a technical and commercial proposal can be prepared quickly. Project enquiries with a large equipment list are assessed individually.

Request an Electric Actuator Quotation

Need an electric actuator selected for your application? Submit a request through the website form or contact us directly. Our engineer will review your technical requirements, answer your questions and prepare a quotation based on the valve and operating parameters.