Case Studies

Valve refurbishment service


Our client is a world leader in the global offshore energy market.  Based in the UK they provide design and build services of bespoke technology and equipment.



The Problem

To ensure uninterrupted service to our clients production, they required a refurbishment of their valve packs.

This proactive approach is something we urge our clients to take, this ensures longevity of any systems within the workshop and also upholds all health and safety compliance.

Our team decommissioned the valve pack and returned this to our workshop at Sunderland.




The Solution

Working at our Sunderland base and manufacturing facility, our team started to work on the pack, this involved:

  • Strip & Inspect the pack
  • Remove fittings and valves
  • Remove thread inserts
  • Dip to remove current coating
  • Inspect for any damage to casing
  • Clean all fittings and valves
  • Hard black Anodise
  • Fit new Heli coils
  • Reseal including new cover plate O Rings.
  • Relief valves set in accordance with system design
  • Function test




The planned work carried out by our team ensured that our client experienced zero downtime on their output. Their production was not impacted and their proactive approach ensured we carried out work on their asset management at a time and date convenient for them.



“This is the kind of approach we love from our clients – proactive as opposed to reactive.  Our services with regards to asset management ensure our clients experience zero downtime in their production and can be carried out at a time suitable for them.”

Paul Taylor – HOS director


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What Our Clients Say

We have worked with HOS for many years from small subsea cable ploughs to large J lay pipe installation towers, they are always willing to go above and beyond to meet our requirements & are experienced, friendly and willing to do what they can to help.

Lead Engineer – Multi National Maritime Solutions Provider

HOS offer a prompt supply service, along with technical assistance, quality is always at a high standard, we have developed an extremely good working relationship which we hope to continue to build on for future requirements.

Production Manager – National Engineering Company

We would highly recommend HOS, we receive excellent customer service, quick delivery and great product quality.

Administration & Marketing Manager – Engineering Solutions Provider

96 x 4SH hose assemblies – measured, tagged, pressure tested, flushed, installed and certified within 7-day window, Wow!

Ship Superintendent – Oil Rig Support Vessel

Thanks again for all your work on the recent project, great turn-a-round in less than a week for two complete marine hydraulic hose kits which were manufactured, pressure tested and flushed, complete with full documentation pack.

Head of Construction - International Subsea Engineering Company