Skip to main content

Viper Subsea’s new model

Published by
World Pipelines,

Viper Subsea has released the next generation of its innovative V-LOCK hydraulic stab plate. At launch in 2011, V-LOCK offered significant performance in excess of existing products – market leading clamping and separation forces, together with excellent misalignment capabilities on make-up and a proprietary secondary release mechanism. The newly released version offers even greater cost and risk reduction benefits for first tier PCS and umbilical vendors, installers and operators.

The design

The new model is designed so all the coupler float requirements are built into the flying half of the stab plate, with couplers rigidly mounted within the fixed half of the stab plate. This mitigates assembly risk for the small-bore tubing installation on the Tree and Umbilical Termination Assembly (UTA). The need for long lengths of hydraulic tubing behind the fixed plate couplings, in order to maintain coupler compliance, is therefore no longer required.

The consequence of removing the need for fixed plate coupling compliance is a reduction in the size of the UTA structure, which thus facilitates the compliance with the Umbilical Termination Size Reduction (UMSIRE) and Joint Industry Project – API TR 17TR9 Subsea Umbilical Termination (SUT), and selection and sizing recommendations. The aim of this JIP is to reduce the size of the UTAs and therefore reduce the installation time and costs. The fact that, by design, the fixed plate couplings are rigidly mounted also means that they are less susceptible to the effects of cementation from calcareous growth.

Viper Subea discusses launch

Speaking about the new launch, Neil Douglas, Managing Director of Viper Subsea said: “due to its superior technical performance, the original V-LOCK quickly established itself in the market with a rapid uptake and a significant number of projects and clients deploying the hardware. However, at Viper Subsea we are continually looking for ways to further improve on our designs, as well as develop new innovations. We put a great deal of resource into research and development and this new and improved V-LOCK is a result of that ongoing process. We are confident that it will further establish the reputation of the V-LOCK family and the significant benefits it delivers will continue to be appreciated by customers. The ‘zero float’ version will become our standard offering, with its inherent benefits to both OEMs and the Operators.”

Additional information

The ‘zero float’ V-LOCK completed qualification early in 2015 and the first commercial deliveries have now been made.

Edited from press release by Stephanie Roker

Read the article online at:

You might also like

Integrity 2019

Integrity 2019

Integrity 2019 is a two-day online conference for pipeline professionals. Since this is a completely virtual conference, you can join us from anywhere in the world, absolutely free.


Embed article link: (copy the HTML code below):