Electric Actuated Valve Manufacturer in Germany

Electric actuated valves combine an industrial valve with a motor driven actuator to provide remote or automated flow isolation and regulation. Electrical input is converted into rotary, multi-turn or linear mechanical movement, allowing the valve to operate without continuous manual intervention or a compressed air supply.

Motor Operated Flow Control and Isolation:

• Quarter Turn: For ball, butterfly and plug valves.
• Multi Turn: Commonly used for gate valves.
• Linear Travel: Used for globe and other linear motion valves.
• Functions: Remote isolation, on/off operation, modulating control, sequencing, interlocking and shutdown.
• Integration: Connects with plant automation and control systems.

On Off and Modulating Operation:

Electric actuated valves can be configured for either discrete positioning or continuous process control.

On Off Operation

An on-off actuator moves the valve between defined open and closed positions.

This arrangement is suited to:

• Pipeline isolation
• Tank inlet/outlet control
• Utility switching
• Pump isolation
• Batch processes

Limit switches or electronic position sensing confirm when the valve reaches the required end position.

Modulating Operation

A modulating actuator positions the valve at intermediate points according to an analogue or digital control signal.

This allows the valve to regulate:

• Flow
• Pressure
• Temperature
• Process level

Electric Actuator Construction:

A typical industrial electric actuator can incorporate:

• Electric motor
• Reduction gearbox
• Output drive
• Torque sensing
• Position sensing
• Limit switches
• Local control station
• Manual override
• Terminal compartment
• Control electronics
• Position transmitter
• Heater or anti condensation arrangement

The reduction gear converts motor speed into the required valve output torque or thrust.

Torque or thrust limiting protects the valve and actuator when excessive resistance is encountered.

A manual handwheel or override arrangement enables operation during commissioning, maintenance or loss of electrical power where provided by the actuator design.

Valve and Actuator Matching:

Correct actuator selection requires more than matching the valve connection flange.

For rotary valves, the actuator must provide adequate torque for:

• Breakaway from the seat
• Movement during travel
• Differential pressure
• Final seating
• Unseating after long periods in one position

For gate and globe valves, selection is based on the required stem torque or linear thrust together with the number of stem turns and required travel.

Important matching parameters include:

• Valve size
• Differential pressure
• Stem dimensions
• Required torque or thrust
• Valve operating direction
• Required operating time
• Mounting interface
• Duty cycle
• Control mode
• Required safety factor

Actuator output should be selected from verified valve operating data rather than nominal valve diameter alone.

Torque, Duty Cycle and Operating Speed:

• Actuator torque determines whether a rotary valve can open and close under maximum differential pressure.
• The overall Electric Actuated Valve range can require output torque from relatively small values for compact ball valves to several thousand newton metres for large industrial valves.
• The current ValvesOnly Europe category lists actuator options up to 20,000 Nm, depending on the selected valve and actuator configuration.
• Duty cycle determines how frequently the actuator can operate without exceeding motor thermal limits.

Common service categories include:

• Infrequent on off duty
• Regular switching duty
• Modulating duty
• Continuous positioning duty

Technical Specifications:

Parameter	Typical Specification
Valve Types	Ball, Butterfly, Gate, Globe, Plug, Knife Gate and selected control configurations
Size Range	DN15–DN2000 across the overall range
Pressure Rating	PN10–PN420 / ASME Class 150–2500 depending on valve design
Actuator Motion	Quarter Turn, Multi-Turn, Linear
Torque Range	Up to approximately 20,000 Nm depending on actuator model
Power Supply	24 VDC, 110 VAC, 230 VAC, 400 VAC and selected three-phase supplies
Control	On-Off or Modulating
Control Signals	4–20 mA, digital I/O and communication options depending on actuator
Position Feedback	Limit switches, analogue transmitter or digital position feedback
Ingress Protection	IP67 / IP68 configurations according to IEC 60529 where specified
End Connections	Flanged, Butt Weld, Socket Weld, Threaded according to valve
Valve Testing	EN 12266-1 / API 598 or valve-specific standard
Actuator Requirements	EN 15714-2 and IEC 60529 where applicable
Hazardous Area	ATEX / IECEx actuator options only where the selected actuator carries the required certification

Control Signals and Feedback Accessories:

Electric actuators can interface with local panels, PLCs, DCS or SCADA systems.

Available control and feedback functions can include:

• Open/close commands
• 4–20 mA positioning signal
• Open position indication
• Closed position indication
• Intermediate position feedback
• Torque alarm
• Motor overload indication
• Local/remote selector
• Emergency shutdown input
• Modbus
• Profibus
• Other supported digital communication protocols

The exact communication system depends on the actuator electronics selected for the project.

Accessories can include:

• Local control station
• Position transmitter
• Additional limit switches
• Space heater
• Remote display
• Communication module
• Separate control panel

Ingress Protection and Fail Position Requirements:

• Electric actuators used outdoors or in industrial plants require suitable protection against dust, moisture and environmental exposure.
• IP ratings are defined according to IEC 60529. IP67 or IP68 enclosures can be selected where the actuator design and installation conditions require higher ingress protection.
• For hazardous areas, the selected actuator must carry the appropriate explosion-protection certification for the required gas or dust zone. ATEX or IECEx capability should therefore be specified at actuator-model level rather than treated as universal across the complete product range.

Custom Configurations:

Electric actuated valves, made according to project specifications, are supplied by Valvesonly Europe. These specifications include individual face to face dimensions, special trim and body material, long bonnet design for cryogenic/high temperature lines, gearing type bypass designs, as well as compatibility with the current SCADA/DCS control system design. Technical information, dimension drawings and actuator wiring diagrams can be provided upon request.