Axial Nozzle Check Valves

Fast-response, compact subsea axial nozzle check valve offering non-slam protection and high flow efficiency.

The ATV Subsea Axial Nozzle Check Valve is a high-performance, non-slam, fast-acting check valve designed for subsea applications. With a compact axial flow design, it provides precise flow control and reliable reverse-flow protection, making it ideal for harsh and dynamic offshore environments. The valve features a spring-assisted disc and a metal‑to‑metal sealing surface, with corrosion-resistant overlays (CRA) on critical wetted areas. It is engineered to meet rigorous subsea design standards, ensuring robust operation in high-pressure and deepwater conditions. Its long design life and maintenance-free construction contribute to reduced operational risk and cost over the asset’s lifetime.

Main Features

  • One piece
  • Spring-Assisted disc
  • Metal-to-Metal
  • 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
  • Client specific Type Approval or Design Validation test
  • PED
  • Welded pups or transition pieces
  • Painting according to Customer Specification

Benefit

  • Compact design
  • Non-slam fast response
  • High Cv

Technical Data

Main Design Standard
API 17D, API 6DSS, API 17TR8, ISO 13628-4, ISO 14723
Applications
Pipeline End Manifolds (PLEM), Pipeline End Termination (PLET), In-Line Structure (ILS), Import & Export Lines, Gas & Water Injection
Size, Pressure Range
From 2” to 60”, up to Class 2500 or 20.000 psi
Temperature Range
-46°C ÷ 204°C
Quality Controls
API 6DSS:
QL1 or QL2
API 17D:
PSL-3, PSL-4
Materials

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

End Connections
Flanges, Compact Flanges, Studded Flanges, Buttwelded ends, Hub Ends
Operators
Not applicable / no external actuator (spring‑assisted disc)
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