Rotex EHF Series Actuators are self contained; electro-hydraulic actuators are particularly well suited for applications requiring critical control and high reliability.
The EHF series has a wide range of applications and is resistant to environmental influence, even in marine environments. The electro- hydraulic actuators are recommended within district heating plants, oil and gas depots where Explosion-proof equipment is required and where pressurized air is not available or unsuitable. Within the oil and power industry, safety is of the highest importance. In emergency situations the failsafe function i.e. close or open the valve automatically with the aid of a return spring in the actuator.
Advantages:

• Reduced installation and maintenance costs
• Most reliable means of positioning a valve in a safe position on loss of power or signal
• The actuator is constructed for direct mounting on valves according to ISO-standards.
• Designed for safety critical applications
• Confirms valve availability and minimises plant shutdown
• Improved process control and product quality
• Provides local operator information
• Complete sealing allows calibration and interrogation of the actuator in all environments
• Environmental protection maintained for internal components during installation and commissioning
• Interfaces with a variety of communication networks
• Suitable for harsh environments including immersion up to 7m