📍 Actuators
🔎 What Are Actuators?
Actuators are mechanical‑electronic devices that enable the movement of control valves or dampers.
They convert signals from PLC, DCS, or SCADA systems (such as 4–20 mA, HART, Profibus, Profinet, Foundation Fieldbus) into mechanical motion, allowing the valve to open, close, or perform modulating (proportional) control.
In power plants for steam control, petrochemical facilities for flow regulation, and water & wastewater plants for flow management, actuators play a fundamental role in ensuring safe and stable system operation.
Choosing the right actuator is critical for process safety, precise control, energy efficiency, maintenance continuity, and regulatory compliance.
🧭 Types of Actuators
⚡ Electric Actuators
- Principle: Provide linear or rotary motion via an electric motor. Suitable for on/off and modulating control applications.
- Applications: Water & wastewater lines, HVAC systems, energy distribution infrastructure, low and medium‑pressure processes
- Key features:
- IP66 / IP68 protection classes
- ATEX and SIL compliant options
- Local control panel and remote monitoring
- Low maintenance requirements
- Example models:
- ABB Electric Actuators
- Emerson Bettis Electric Actuators
- Yokogawa Electric Actuators
- Siemens SIPOS Electric Actuators
💨 Pneumatic Actuators
- Principle: Use compressed air to provide linear (globe) or rotary (ball, butterfly) motion. Commonly used in quarter‑turn and linear valve applications.
- Applications: Petrochemical plants, refineries, power plants, safety and ESD applications requiring fast response
- Key features:
- Spring‑return (fail‑safe) design
- High cycle life
- ATEX Zone 1 / Zone 2 compliance
- High speed and reliability
- Example models:
- ABB Pneumatic Actuators
- Emerson Fisher & Bettis Pneumatic Actuators
- Yokogawa Pneumatic Actuators
- Siemens Pneumatic Actuators
🛢️ Hydraulic Actuators
- Principle: Use pressurized hydraulic fluid to generate very high torque and thrust force.
- Applications: Large‑diameter valves, high‑pressure lines, offshore and pipeline projects
- Key features:
- Emergency shutdown (ESD) scenarios
- Fail‑safe function with hydraulic accumulator support
- High durability under harsh environmental conditions
- Very high torque capacity
- Example models:
- ABB Hydraulic Actuators
- Emerson Bettis Hydraulic Actuators
- Yokogawa Hydraulic Actuators
- Siemens Hydraulic Actuators
🛡️ Fail‑Safe and Safety Features
Fail‑safe function ensures that in case of power or air loss, the valve moves to a predefined safe position (fail‑open / fail‑close).
- Pneumatic: Spring‑return mechanism
- Electric: Battery or electronic fail‑safe modules
- Hydraulic: Accumulator‑supported systems
These features are mandatory in SIL‑classified safety systems, ESD valves, and processes requiring environmental compliance.
⚖️ Comparison of Actuator Types
| Type | Power Source | Typical Application | Strengths | Considerations |
| Electric | Electric motor | Water, HVAC, process | Easy integration | Response time |
| Pneumatic | Compressed air | Energy, petrochemical | Fast and reliable | Air quality |
| Hydraulic | Pressurized fluid | Large valves | High torque | Maintenance cost |
🧠 How to Select the Right Actuator
Selection criteria should include:
- Valve type (globe, ball, butterfly) and motion type (linear / rotary)
- Valve size and required torque / thrust force
- Process pressure and temperature
- On/off or modulating control requirements
- Fail‑safe and SIL requirements
- Communication protocol (HART, Profibus, Profinet, FF)
Application examples:
- HVAC systems → Siemens SIPOS Electric Actuators
- Petrochemical processes → Emerson Bettis Pneumatic Actuators
- Offshore applications → ABB Hydraulic Actuators
🏷️ Brand & Model Based Actuators
ABB
Electric, Pneumatic, Hydraulic Actuators
Emerson – Bettis & Fisher
Electric, Pneumatic, Hydraulic Actuators
Yokogawa
Electric, Pneumatic, Hydraulic Actuators
Siemens SIPOS
Electric, Pneumatic, Hydraulic Actuators
🌍 Global Supply & RFQ
Yeşil Grup Enerji provides ABB, Emerson Bettis & Fisher, Yokogawa, and Siemens actuators with:
- 🌐 Fast supply from global stock
- ✅ Full product code and configuration validation
- 📄 Datasheets, technical comparison, and equivalent product support
- 📦 Project‑based competitive RFQ and lead‑time management
🌐 Regional Coverage
- Middle East: Türkiye, Saudi Arabia, UAE, Qatar, Iraq, Jordan, Oman
- Europe: Germany, France, Netherlands, Italy, Poland, Romania, United Kingdom
- Central Asia & CIS: Russia, Azerbaijan, Kazakhstan, Uzbekistan, Turkmenistan
- Africa: Algeria, Egypt, Nigeria, South Africa, Kenya, Morocco
- Asia & Americas: China, South Korea, India, USA, Brazil
⚠️ Important Note
Yeşil Grup Enerji is not an authorized distributor of the mentioned brands.
With an independent multi‑brand sourcing approach, we provide the most suitable technical and commercial solution for each project.
📧 Contact
- Email: info@yesilgrupenerji.com
- Phone: +90 505 696 61 00
- Web: www.yesilgrupenerji.com
