Mate/De-Mate Actuation

An essential part of our design process is understanding the critical functionality of our customer’s products under test and their requirements to follow current industry standards.  The offshore Oil & Gas industry demand that wet-mate electrical connectors (used for power, control and communications) are comprehensively tested to prove their robustness and reliability in the most realistic and severe of operating environments.

KW Designed Solutions has developed and engineered a range of Pressure Vessels which have automatic mate/de-mate mechanisms incorporated into their design to meet these strict testing requirements in line with API Standards.

Integrated tooling and multi-penetrations allow for adaption to all types and sizes of wet-mate electrical or hydraulic connectors.  This allows the user to simulate the functionality, operation and connectivity of the male and female connectors whilst under pressure to ensure robustness and reliability after hundreds of cycles.

Our mate/de-mate systems allow both single step and cyclic step sequence functions with set datum’s, adjustable travel distance for mate and de-mate positions, intermediate hold/pause times within a cycle, ability to set a number of repeat cycles as well as simple cycle start and stop/reset functionality.

Mate/De-Mate Actuation


  • Single step to cyclic step sequencing with set datum reference
  • Programmable speeds, distances, steps and cycles
  • Slow speed setting with jog functionality for product set-up.
  • Compact Linear actuation with various stroke lengths
  • Balanced Stab Rods with through bore and cable gland attachment
  • Integral Tooling for multiple Connector attachment
  • Connector misalignment capability


  • Subsea electrical connectors can be physically mated and de-mated during electrical testing
  • Central bore in stab rods allow for the attachment of high pressure glands to seal off on the clients electrical cable
  • QCDC Couplings can be mechanically operated whilst subject to hyperbaric pressure
  • The mate/de-mate system drive system is neatly incorporated into closure design, saving space
  • Angular misalignment can be induced to simulate ROV manipulation
  • Allows the creation of advanced testing platforms simulating real-life functionality that exceeds the requirements of API standards

Applications and Customer Uses

Airmate and demate mechanisms are provided on Pressure Vessels for customers manufacturing equipment for the Subsea industry who require the ability to conduct Wet-Mate Electrical Connector Testing (Mate/Demate actuation of electrical connectors) or Hydraulic Valve testing in line with API 6A.

Project Examples

Project examples to follow

kw designed solutions

Tel: +44 (0) 1257 474 507

KW Designed Solutions Ltd, KW Group, Drumhead Road, Chorley North Business Park, Chorley, Lancashire PR6 7DE. United Kingdom.

Designed and manufactured in the UK Designed and manufactured in the UK.