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Consult our engineers at an early stage to ensure that the required standards are fully understood and achieved in the system design.

Sub-Sea Actuators

The standard range of marine actuators designed and manufactured by KT Hydraulics is suitable for deep water applications to a depth of 200m. For applications below 200m, up to a maximum operating depth of 3,000m the KTH sub-sea actuator will be required.

Basic specification

- 90 degree rack and pinion valve actuator for Ball or Butterfly types that require fail set action. 

- Compact yet powerful
actuator with up to 207 bar working pressure.

- Rack and pinion design provides a linear, balanced torque output, throughout its stroke.

- Suitable for use with all known hydraulic fluids. Sub-sea actuator KS25000

- Optional remote end position signals or full range transducer.


- Choice of hydraulic connection ISO 4401 Size 3 interface or screwed ports.

- Adjustable end of travel stop screws.

- Main body and end covers manufactured in Nodular Graphite Cast Iron (SNG) with stainless steel
GR316 fastenings.

- Rack and pinion manufactured in high tensile alloy steel for arduous duty.

- Flushing ports or alternatively
bleed ports available.

- Choice of direct mounted hydraulic function blocks.

- Suitable for close or pedestal mounting, full adaptation provided.

Click to view specification tables and data sheets for Sub Sea Actuators

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API Standards

With many years of experience in design and manufacture to API standards including API Standard 614, Lubrication Shaft-Sealing and Control-Oil Systems for Special-Purpose Applications, 5th Edition, we have an in -depth understanding of the requirements and implications.

Email or call now for our API design criteria sheet.