Main Product Features

Hydraulic actuator with counterweight for fast and reliable valve closure
The hydraulic actuator with weight is designed to close butterfly valves, ball valves, and control valves quickly and reliably, ensuring dependable shut-off performance in critical pipeline applications.

Modular compact design with ISO 5211 mounting for easy installation
Its modular concept, compact design, and ISO 5211 standard attachment allow quick and easy assembly on the valve, while the HYDROMAT® plug-and-play system simplifies installation and integration.

Special lever bearing design to protect the valve shaft
The specially designed lever and weight bearing arrangement is integrated actuator housing so that only torque is transmitted through the bearing seats, with no additional loads on the valve shaft, ensuring easier assembly and improved valve protection.

Autonomous operation with integrated hydraulic power unit
The actuator is standardly equipped with its own hydraulic power unit for autonomous operation, while also allowing the use of an external hydraulic pressure source from 70 to 250 bar when required.

Reliable electro-hydraulic unit for opening and holding valve position
The integrated hydro-aggregate is used to open the valve and automatically maintain the open position, with compact and highly reliable electro-hydraulic power units designed for working temperatures from -40°C to +80°C.

Custom hydraulic and pneumo-hydraulic power pack options available
Special power pack designs are available on request, including carbon steel, stainless steel, and various pneumatic or pneumo-hydraulic combinations to suit specific project requirements.

Emergency hand pump for forced manual valve opening
All actuator versions are equipped with a hand pump as standard, allowing emergency forced valve opening when needed during operational or power-related failures.

Environmentally responsible design to prevent oil contamination
The actuator structure is developed with strong attention to environmental protection, helping reduce the risk of contamination from mineral oil and supporting safer operation in sensitive environments.

Separate modular weight and lever for flexible configuration
The weight and lever are manufactured separately as part of a modular concept, allowing simple installation and easy adaptation to specific operating conditions and project requirements.

Standard end-position micro-switches for valve status monitoring
The standard version includes two adjustable end-position micro-switches with IP65 protection, enabling reliable detection of both valve open and valve closed positions.

Optional rotary encoder and additional micro-switches
On request, the actuator can be equipped with a 4–20 mA rotary encoder for position feedback or with additional micro-switches for enhanced monitoring and automation.

Intelligent design with sensors for flow and pressure control
The actuator can be integrated with suitable sensors to support intelligent control of flow and pressure during valve opening and closing operations.

Adjustable damping stages for controlled closing performance
The standard version includes two adjustable damping stages for the closing process, while an optional three-stage damping system can be provided with activation at any point during valve closure.

Automatic safety shut-off for pipeline protection
As standard, the actuator offers automatic safety shut-off and can be connected to a reliable paddle trip mechanism for detecting abnormal flow speed, such as in the event of a ruptured pipeline.

Available in normally open or normally closed electro-hydraulic control systems

The electro-hydraulic control concept is available in both NO (normally open) and NC (normally closed) configurations to match different system and safety requirements.

Adjustable closed position with fixed mechanical limiters
Fixed mechanical limiters allow the closed valve position to be adjusted by ±3%, ensuring accurate shut-off alignment and dependable operation.

Adjustable open position with self-aligning clevis
The self-aligning clevis enables fine adjustment of the open valve position by ±3%, helping optimize valve travel and installation accuracy.

Adjustable opening and closing time for precise control
The actuator allows adjustment of valve opening and closing time through a pressure-compensated flow control valve with an integrated safety function for consistent and secure performance.

Service pin locking for maintenance safety
A service pin can be used to lock the valve in the open or closed position during maintenance work, providing additional safety for service operations.

Designed for high-performance pressure ratings
HAWL actuators are designed for a maximum operating pressure of 160 bar and a test pressure of 250 bar, ensuring suitability for demanding industrial applications.