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Quick Release Nut

As oil and gas production has ventured into deeper and deeper water, the requirement for remote activation in bolted applications has increased. This highlighted the need for reliable methods of remote disconnection devices.

In response to this need, Hydratight developed the Quick Release Nut (formerly known as HydraQuick Release System). This system, operated via ROV hot stab, offers a fast, efficient and highly reliable method of remote disconnection (typical disconnection time is four minutes per stud instead of two hours when using ROV and torque tools).

Quick Release Nut (formerly know as HydraQuick Release System):
The unique design of the Quick Release Nut utilises hydraulics to allow remote, fast removal from a tightened stud bolt.
The principal characteristics are the following:

  • The design consists of a three segment nut set into a cage
  • Low pressure release; less than 120Bar (1,740psi) actuates the casing sleeve to move on the piston rod
  • The actuation movement retracts the outer cage and releases the three nut segments which immediately frees the nut from the stud bolt thread

This technology offers a significant increase in offshore operational time savings and consequently a cost reduction to the project.

Hydratight is continually looking for new and innovative methods of utilising this technology within the subsea industry and welcomes opportunities to work with new and existing customers in developing any such solutions.

Quick Release Nut

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English PDF Document, 1.1 MB
English PDF Document, 1.1 MB

Technical data

English PDF Document, 573.1 KB
English PDF Document, 573.3 KB