Hydraulic Servo & Actuation

TECG Control provide a full range of electro-hydraulic actuation for turbomachinery application, to retrofit existing mechanical-hydraulic actuating system or simply buying a spare parts. 

Actuation Upgrading/Modernization

We provide the retrofit actuation solution for the critical turbomachineries with the Voith products. 

Typical Application:

  • Turbine Steam Valve
  • Turbine Trip Valve
  • Compressor, Inlet Guide Vane

Our services:

  • Design/Selection
  • System integration
  • Installation & commissioning.




Servomotors Used for Driving Control Valves, Steam Turbine & Compressor Application


I/H converters & Servomotor positioner for all critical application. 


Compact and cost effective hydraulic power unit (HPU) for the steam turbine hydraulic servo actuation and hydro turbine wicket gas control.

Retrofit the existing  trip solenoid (dump valve) to the SIL-3 Trip Shut-off Module (TSM) for 2 units steam turbine compressor train.

Uncompromise Reliability Requirement

To upgrade the existing WSR to a redundant, parallel working way valve WSR for the servomotor actuation on the critical application.  

Existing Servomotor SMR-A12402 is a single acting cylinder with the single coil, WSR way valve. The upgrading work will replace the single coil to a parallel coil, WSM.




Retrofit the existing Askania Stator Blade Controller to the New Stator Blade Controller by TECG Control.

Two servo positioner (WSR Way Valve from Voith) is included in the package, to provide a redundant configuration in servo control.