Subsea Service Range

Subsea Range Catalogue Download


Experience gained since 1987 of successfully applying valves directly immersed in sea water has been applied to develop the technically superior, market leading performance FPS10 range of shearseal type directional control valves. Fully seawater compatible, the standard products are able to operate on fluids with contamination levels greater than NAS 1638 Class 12. True failsafe valves, they bring you the benefits of reduced manifold weight, size and costs, and put world beating performance at your command. Below are typical specification requirements for sub-sea valves and comparable Bifold Fluidpower valve performance.

Subsea Valve Specification

  • 1 million cycles
  • Control fluid compatability:- New generation water glycols, oil (non-charmable)
  • Up to 20% sea water contamination
  • Immersable in di-electric fluids with up to 20% sea water contamination
  • Fluid cleanliness NAS 1638 Class 6 - NAS 1638 Class 10
  • 3000m water depth
  • Up to 760 bar maximum working pressure
  • -10°C to + 50°C
  • Leakage <0.02 to 1 cc/min
  • 18 to 28 VDC, 12 Watt

Bifold Fluidpower Performance

  • 1 million cycles
  • Option of seawater as operating medium
  • Direct seawater immersion
  • Up to NAS1638 Class 12
  • 3000m water depth
  • Up to 1035 bar maximum working pressure
  • -40°C to 121°C
  • Leakage 0 to 0.2 cc/min
  • 12 to 28 VDC, 15 Watt

Qualification Tests

Bifold Fluidpower valves are subjected to extensive qualification test programmes and that include the following:

Shuttle valves - up to 690 bar

subsea shuttle valves

Pilot operated valves -
Ball seated and slide -
up to 1035 bar

subsea pilot operated valve

Special Valve Products

Direct seawater immersed modular valve assemblies for drill pipe riser and subsea pipeline valves.

Series configured bi-stable pilot operated 3/2 valve, pilot operated 3/2 spring return valve and solenoid operated 3/2 spring return valve.

special subsea valve

Dual, 3/2, spring return, 2-stage solenoid valves. Integral return line ingress filter protection.

special subsea valve

SCM 8 function flange and 12 function cube manifolds.

special subsea valve special subsea valve

SCM pressure supply manifold with filter, pressure transmitter and shuttle valve.

special subsea valve

Pilot operated slide valves and direct acting solenoid valves.

expro intervention tool photo

RRC Controls Ltd Wellhead control module - Talisman Energy (left). Bi-stable, 2-stage solenoid valves 8 function flange manifold (right)

special subsea valve special subsea valve
Service & Support
General Information
Delivery & Returns

Bifold, Bifold Marshalsea & Bifold Orange are all brands of Rotork

Registered No. 06186844 in England
Registered Office: Rotork House
Brassmill Lane, Bath BA1 3JQ


© Copyright Bifold Fluidpower Ltd 2019 All rights reserved.