Pig Diverter Valves
A compact, high-pressure 3-way subsea pig diverter valve designed for reliable pigging operations, deepwater performance, and long service life.
The ATV Subsea Pig Diverter Valve is a compact, field-proven 3-way valve engineered for reliable pig diverting operations in demanding subsea environments. Designed for single-operator use, it provides a robust bi-directional flow path using a rotating diverter system. Its top-entry configuration and bolted bonnet give it strong structural integrity, while the forged or cast body ensures long-term durability under high-pressure conditions.
The asymmetric 3-way design, combined with a 5D bend, enables smooth flow direction for subsea pigging activities. Sealing is achieved through primary metal static seals, supported by metal or thermoplastic stem seals. Additional elastomeric environmental sealing prevents seawater ingress, while scraper rings and contamination preventers protect internal components. An anti-blow-out stem design enhances safety during operation. For corrosion-resistant performance, CRA (corrosion-resistant alloy) overlay can be applied to sealing surfaces or all wetted parts.
The valve is designed and validated according to industry standards such as API 17D, API 6A, API 6DSS, ISO 13628-4, and ISO 14723. It has a Technology Readiness Level (TRL) of 7, confirming successful field deployment. Built for long design life and maintenance-free operation, it is ideal for applications such as cluster manifolds, PLEMs, PLETs, in-line structures, and other critical subsea installations.
Available in sizes ranging from 2″ to 24″ and pressure ratings up to Class 2500 (20,000 psi), the valve can also be customized for special project requirements. It performs in temperatures from –46 °C to +121 °C and is qualified for water depths up to 3,048 m (with deeper options on request). Quality levels include API 6DSS QL1/QL2 and API 17D PSL-3/PSL-4. Material options include carbon steel, low-alloy steel, stainless steel, duplex, superduplex, and nickel alloys, with NACE and NORSOK selections available. End connections include flanged, studded, buttwelded, and hub ends. Operators available include ROV direct drive, gearbox-operated interfaces, hydraulic rack-and-pinion actuators, and compatibility with all-electric subsea actuators.
Main Features
- Top Entry Design
- Bolted bonnet
- Forged or cast body and bonnet
- Bi-Directional
- Rotating diverter
- 3-way asymmetric design with 5D bend to ensure a smooth transition
- Primary metal static sealing
- Metal and thermoplastic seals available for stem sealing
- Elastomeric environmental seal to prevent seawater ingress
- Body cavity Debris contamination preventers and dedicated scraper rings for bearing sliding areas
- Anti blow‐out stem
- CRA overlay on sealing areas or all wetted parts
- Design validation to API 17D / API 6A or API 6DSS
- Field-Proven technology up to TRL7
- Long design life, maintenance free
Options
- Customized size and design pressure according to Project requirements
- Diverter designed to allow unobstructed flow to continue through the lateral branch
- Client specific Type Approval or Design Validation test
- PED
- Welded pups or transition pieces
- Painting according to Customer Specification
Benefit
- Robust and compact design
- Bi-Directional
- Operable by a single operator
- Suitable for high pressure systems
Technical Data
Greater Depth upon application
QL1 or QL2
PSL-3, PSL-4
Main Components:
- Carbon Steel or Low Alloy Steel
- Stainless Steel
- Duplex and Superduplex Stainless Steel
- Nickel Alloys
NACE material available upon request
Norsok material available upon request
- ROV Direct Drive, with interface up to API 17H Class 7 or for proprietary torque tool interface
- Gearbox with ROV interface up to API 17H Class 7 or handwheel
- Rack &Pinion Hydraulic Actuator (Fail Safe or Fail-As-Is)
ATV operators are suitable for electric actuation by drop-in All-Electric Subsea Actuator.