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Subsea valves Velan Vietnam

Introduction into subsea valving and flow control

ABV Energy manufactures complete integrated units of subsea valve, actuator and ROV receptacle tool.

With a very strong Quality Assurance and Engineering Dept., ABV Energy is able to design and

manufacture the most specific and customized actuated valves according to the project requirements. Subsea Valves and actuators are critical components to any offshore installation.

Any subsea intervention is costly, time consuming and extremely difficult, and any failure would

result in loss of profit for the Operators and End Users.

Type of applications:

Pipeline subsea valves
Subsea Manifolds
Line tees for future tie-ins
Jacket flooding valves
SSIV (Sub Sea Isolation Valves)
PLEM ESDV and On/Off Valves
Semi-submersible Buoy and Turret

Type of valves used in subsea environments:

Ball Valves

Generally Piggable type, they are used normally in subsea pipeline
Possibility of Seat design metal to metal with tungsten carbide overlay.
Corrosion Resistant Alloys on valve dynamic sealing parts and ring joint grooves
Redundant sealing, for increased reliability of the valve

Through Conduit Slab and Double Expanding Gate Valves

They are used normally in subsea manifolds or pipelines, when there are fluid mixes of liquid, gas and sand.
The valve design is suitable for high percentage of sand or solid particles inside the fluid and very high pressure (normally above 5000 psi)
Thanks to their Through Conduit Design, they are fully Piggable.
Possibility of Seat design metal to metal with tungsten carbide overlay.
The Double Expanding Gate Valves are used when a DB&B is required for isolating the downstream cavity

Check Valves

Piggable type, they are used normally in subsea pipelines
On request, they can be provided with Override Tool (ROV Operable) for allowing Piggability of both sides
The Valves are operated by the types indicated in "Types of Operators"

Type of operators:

Shallow water (normally down to 75 meters water depth)

by Diver
by ROV receptacle tool
remotely by Hydraulic Actuators with or without ROV receptacle tool / Handwheel override

Deepwater (normally down to 3500 meters water depth)

by ROV receptacle tool

by Hydraulic actuators with or without ROV receptacle tool override in case of hydraulic failure

Main standards

API 17D/ISO 13628-4 (Specification of subsea equipment and well head equipment)
API 17A/ ISO 13628-1 (Design and Operation of Subsea Production Systems)
API 17H/ ISO 13628-8 (Remotely Operated Vehicle (ROV) interfaces on subsea production systems)
API 6DSS/ISO 14723 (Specification on Subsea Pipeline Valve)
ISO 10423 (drilling and production equipment)
Norsok –U-001 (subsea production system)
Norsok – L-001 (piping and valves)
Norsok – M-001 (material selection)