C6A Series

API 6A Hydraulic Actuator

Designed and engineered for severe-service valve automation applications. The API 6A Hydraulic actuator has nominal pressures of 3,000 PSI / 5,000 PSI.

electro hydraulic actuator linear valve automation

Self-Contained ESD System

The Self-Contained ESD System of the API 6A Hydraulic Actuator is a safety system that is designed to provide reliable valve shutdown capability when an external power source is either not available or not dependable. Using a hand pump with different control parts, a zero leakage circuit is maintained to ensure valve movement does not inadvertently occur until a fail-safe signal is received.

From the Arctic to the desert, proven seal compounds for a wide variety of applications.

api 6a hydraulic actuator performance graph

Easy to Operate

The Self-Contained ESD System, with its sequence valve and bypass valve, can directly pressurize and open the valve conveniently in spite of external conditions.


All control system components of the hydraulic actuator are integrated on one manifold, with all channel connections among each part designed within the module. The structure is compact, reliable and no leakage even in extremely high or low ambient temperature.

Enclosed System

With volume compensating design, the hydraulic control loop is totally isolated with air, avoiding deterioration or contamination of the hydraulic oil. The C6A can be installed at any angle necessary.

Temperature Compensation

Temperature compensation of high pressure hydraulic actuator circuit and low pressure control circuit is accomplished with two separate accumulators. This assures system stability by minimizing relief valve operation and eliminating valve drift due to large temperature changes.

Fast Trouble Shooting

Specialized troubleshooting design provides a quick self-diagnosis system.

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Valve Compatibility

Our Series C6A API 6A Hydraulic Actuator is compatible with any process valve that requires linear motion.

knife gate valve actuator

Knife Gate Valve

gate valve actuator

Gate Valve

Globe Valve

Pinch Valve

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