API 6D Pipeline Valve Manufacturer

API 6D pipeline ball, gate, and check valve manufacturer in India. Trunnion mounted, through conduit, slab gate designs. For oil & gas transmission pipelines. Export to Middle East & worldwide.

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What is API 6D?

API 6D (Pipeline and Piping Valves) covers the design, manufacturing, and testing of ball, gate, check, and plug valves for pipeline service. API 6D valves are used in cross-country oil/gas transmission, gathering systems, and tank farm piping where reliable shutoff and pigging capability are essential.

Valve Types

  • Trunnion Mounted Ball Valve
  • Through Conduit Gate Valve (Slab/Expanding)
  • Swing Check Valve
  • Dual Plate Check Valve
  • Plug Valve (Lubricated/Non-Lubricated)

Materials

  • ASTM A216 WCB / WCC
  • ASTM A352 LCB / LCC (Low Temp)
  • ASTM A350 LF2 (Low Temp Forged)
  • Duplex S31803 / Super Duplex S32750
  • Inconel 625 / 825 Overlay

Pressure Classes

  • Class 150 through Class 2500
  • ANSI 150 to ANSI 2500

End Connections

  • Flanged (RF, RTJ)
  • Butt Weld
  • Combination (Flanged x Weld)

Frequently Asked Questions

What is the difference between API 6D and API 600?
API 600 covers flanged, bolted-bonnet cast steel gate valves for general refinery/process service. API 6D covers ball, gate, check, and plug valves specifically designed for pipeline transportation service. API 6D valves have stricter requirements for bidirectional shutoff, extended body design, and cavity relief.
What sizes do you manufacture for API 6D valves?
We manufacture API 6D valves from 2" to 48" (DN50 to DN1200). Large-bore pipeline ball valves up to 48" Class 600 with trunnion mounted, top entry design. Through conduit gate valves up to 36".
Can API 6D valves accommodate pipeline pigs?
Yes. API 6D ball valves have full-bore (FB) design and through conduit gate valves have a clear, unobstructed bore matching the pipeline ID, allowing passage of cleaning pigs, intelligent pigs (ILI tools), and batching pigs without valve removal.
Do you supply API 6D valves for sour gas pipelines?
Yes. We manufacture API 6D valves compliant with NACE MR0175 / ISO 15156 for H₂S-containing (sour) pipeline service. Available with HIC/SSC tested materials, Inconel 625 overlay on sealing surfaces, and full NACE documentation.

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