Subsea Control Manifolds

J+S has developed and designed highly configurable Manifold assemblies for subsea use.

High Specification Components

The use of high specification components and materials enables the operation of the Manifolds in a variety of environments and functions. The Manifolds are suitable for installation within a pressure compensated oil-filled enclosure or open to the external environment up to depths of 3000m.

Port positions, connection type and component layouts are all configurable to enable installation in a variety of orientations to fit the available space. Supply and function lines can be installed with dual pressure transducers for added redundancy should this be required on any of our Manifold designs. The Manifolds can be fully ported or mount onto a base interface. Manifolds can be daisy chained to give increased functionality or to mount clusters of valves closest to their functions thus reducing multiple complex equipment tubing runs.

We can rapidly configure manifolds for a variety of uses.

Initially designed for use in our Subsea Control Module (SCM), the flexibility of designing using Solidworks 3D and Enterprise configuration management software, allows us to rapidly configure manifolds for a variety of uses. The individual Manifolds can be deployed Subsea as part of a range of equipment such as an SCM, intervention tooling package or Subsea Isolation Valve (SSIV) control assembly.

Bespoke designs can also be catered for.

Subsea Penetrator Manifold

J+S has designed a highly survivable Subsea enclosure.

Maintenance-Free and Secure

The Subsea Penetrator Manifold is suitable for use as a junction box, electrical termination/distribution module or secure housing for electrical components.

The Subsea Penetrator Manifold provides a maintenance-free and secure subsea enclosure utilising J+S’s extensive capability in high integrity vessel design and manufacture. The Subsea Penetrator Manifold can be used in numerous applications and has a wide range of interfacing options. These include subsea connectors or an over moulded stainless steel penetrator, providing a versatile interfacing solution for multiple subsea connection points.

Key Features

  • Oil or gel filled housing
  • Polyurethane mould penetrator using proven technology
  • Constructed in alloy or 316L stainless steel for excellent corrosion resistance
  • Qualification tested to depth of 300m
  • Internal splicing using proven polyurethane moulding technique
  • Multiple connection ports (dependent on size of housing)
  • Multiple connection types (subsea connectors, moulded penetrator, etc.)

SSIV Hydraulic Manifold

J+S has designed a manifold that mounts direct immersion subsea directional control valves, suitable for single acting actuator functions.

Hydraulic Latching

The SSIV Hydraulic Manifold valves are designed to hydraulically latch when a pulse signal is sent to move to the valve to the open position. The valve will remain latched until a close signal is received or the hydraulic pressure drops below a pre-set value. On close the function line is vented locally. Manifolds can be configured for single or multiple DCV’s. Function line pressure transducers are incorporated mounted directly to the DCV to provide indication of system status.

Key Features

  • Maximum Operating Depth of 3000m
  • Weight 6 Kg
  • Max Dimensions of 0.3m x 0.19m x 0.15m

Supply and Filter Manifold

J+S has designed a supply and filter manifold for full immersion and can be used as an independent or combined in-line filter assembly.

Dual Redundant Inputs

The Supply & Filter Manifold combines dual redundant inputs via an integral shuttle valve through a filter to provide a single clean output. The filter housing contains a stainless steel mesh filter element. Supply line pressure transducers are incorporated to provide indication of system status.

Key Features

  • Maximum Operating Depth of 3000m
  • Weight 8 Kg
  • Max Dimensions of 0.25m x 0.12m x 0.1m (Various filter length options)

Tooling DCV Manifold

J+S has designed a tooling DCV manifold suitable for double acting actuator functions.

The valves are designed to remain in set position until a pulse signal is sent to move to the opposite setting. Manifolds can be configured for multiple DCV’s. The Manifolds can also be combined by connecting in series to give various combinations to meet system requirements. E.g. A 22 DCV system with 4 Manifolds set at different locations on a tooling skid laid out as follows; 4-station + 6-station + 8-station + 4-station.

Key Features

  • Operating depth of 3000m
  • Weight 36Kg
  • Max Dimensions of 0.4m x 0.25m x 0.18m (0.4m x 0.25m x 0.3m with Transducers)

Engineering design

Operational support

Subsea connectivity systems

Subsea distribution & accumulation

Subsea transformers

Subsea control manifolds

Subsea in-line splice assemblies

High voltage connections

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Phil Reid

Managing Director

Phil has worked in the energy industry for over 25 years. He started his career with Kvaerner FSSL progressing through a variety of roles in subsea engineering, from manufacturing to leading some of their most complex projects all over the world. He worked with the original J+S for a period before moving on to Genesis Oil and Gas as a Subsea Controls Engineering consultant; during that period, he was seconded to Centrica Energy (now Spirit Energy) which led to a permanent role as Lead Subsea Controls & Umbilical Engineer for Developments, Capital Projects and Operated Assets. For almost a decade Phil successfully delivered Capital Projects from concept right through to project close out whilst also looking after the running of their subsea assets.

As part of J&S Subsea limited, Phil oversees the day-to-day operations and will grow the business both in the UK and globally. 

James Morris

Engineering Director

James’s career started when he joined the Royal Navy from school as an Artificer Apprentice. After a 5-year Marine Engineering Apprenticeship he served in surface ships HMS Glamorgan, HMS Edinburgh, and HMS Glasgow and at Rosyth as part of an engineering support team. 

Moving into the Energy Industry in 1992, over the next 26 years he gained a wealth of experience within large and small companies on operation, design and project management of subsea control systems and equipment. This period started with several years as a Project Engineer for a family run hydraulic services company Grampian Hydraulics followed by 5 years as a Support Engineer at Kvaerner Oilfield Products.  James joined RRC Controls Services ltd in 2001 before finally moving to J+S Ltd in 2010. At J+S his dedication and technical capabilities were rewarded with several promotions until becoming a member of the management buyout team. 

He has designed an extensive array of subsea equipment from basic cable penetrators to complete subsea control modules. 

James thrives on providing solutions for client’s problems. 

As Engineering Director, James will ensure that the company provides clients with timely, cost effective and technically sound solutions and services. 

Matthew Blair

Executive Chairman

Matt Blair is Executive Chairman of J+S Subsea which was formed in October 2020 through a management buyout of the Subsea Engineering Division of Systems Engineering and Assessment Ltd.

With J+S Subsea and SEA for over 14 years, Matt has a wealth of industry knowledge and expertise.

Previously an Electronics Engineer with Ferranti Computer Systems Ltd specializing in sonar and submarine command systems, Matt moved into hydrographic survey working with Subsea7, Tritech, and CDL before joining J+S Subsea.

He was Vice Chair of the Decom Leadership Group of Decommission and in that role, he facilitated industry and academic studies on potential for reuse and repurposing of decommissioned equipment. He is still actively involved with the reuse agenda through Decommission and OEUK.

Although not part of day-to-day operations, Matt stays close to company strategic matters and is seeking further opportunities to update and transfer Energy technologies and products into the Marine Renewables markets and help to develop the broader circular economy.

Contact Us

  • J&S Subsea Limited
  • The Lombard Centre
  • Kirkhill Place
  • Dyce
  • AB21 0GU
  • info@jands.co.uk
  • +44 1224 773435
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