Topside Umbilical Termination Units (TUTUs)

HomeManufacturingTopside Umbilical Termination Units (TUTUs)
HomeManufacturingTopside Umbilical Termination Units (TUTUs)
Topside Umbilical Termination Units

Located adjacent to the umbilical hang-off and interfacing with other hydraulic and control units, for example the Hydraulic Power Unit or Master Control System, our Topside Umbilical Termination Units (TUTUs) enable the controlled bleeding of systems to help avoid unexpected depressurisation.

TUTUs at a glance

System Specification

•  High working pressures up to 1379barg / 20,000psig
•  Single, double or custom isolation philosophies
•  Systems for liquids or gasses
•  Junction boxes for electrical terminations
•  Pressure gauges externally visible


•  316 stainless steel or carbon steel enclosed or open framed construction
•  Wide range of tube fitting types, e.g. twin ferrule compression, MP coned & threaded and Parker Hannifin MPI™ or flanged and welded pipework
•  Wide range of materials and exotics available, e.g. 316/316L, 6Mo, Incoloy 625, Incoloy 825, 904L, Super Duplex, Duplex
•  Electric and/or pneumatic pumps suitable for use with mineral oil or water glycol based fluids
•  Environmental loadings can include: vessel motions, wind and blast loadings
•  Deck mounting or suspended (underslung) system designs


•  Safe area and hazardous environments (Zone 1/2, Class 1 Division 1/2), to ATEX, IECEx or NEC (NFPA 70)
•  Standard temperatures design in accordance with EN 13628-6, systems also available with Extended and Arctic ratings
•  Design and certification to DNV2.7-1 and DNV2.7-3
•  When required designed to the relevant NORSOK standards

All systems are designed according to your individual requirements or our standardised design philosophies - always incorporating safety, environmental and statutory requirements.

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