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API 6D Single Welding Seam Fully Welded Ball Valve

API 6D Single Welding Seam Fully Welded Ball Valve

    The SV API 6D single welding seam fully welded ball valves has spherical body welded by forging materials, with only one welding seam but without bolts and nuts to avoid leakage from body.

    It has various advantages such as simple in structure, light in weight, high in strength, easy in operation, maintenance-free, reliable sealing, low cost and long service life up to 30 years.

    The SV spherical body fully welded ball valve is widely used in petroleum and natural gas long distance pipelines.

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  • Features
  • Specification

  • The SV API 6D pipeline fully welded ball valve with single welding seam makes the body more compact, strong and rigid;
  • The SV LF2 fully welded body ball valve has forging body to avoid shrinkage cavities, pin holes, cracks, sand holes and other defects;
  • Trunnion ball and floating seat design reduces operate torque, ensures sealing performance under low pressure or without pressure and achieves better sealing when pressure increased;
  • Separated ball and stem design minimizes the torque and impact on stem;
  • Body and stem are designed to be double sealing and secondary seal is fire safe;
  • Cavity pressure self relief when spring loaded single piston effect seat structure;
  • Bidirectional sealing when double piston effect seat structure;
  • Emergency sealant injection valve as subsidiary sealing device;
  • Double block and bleed structure to discharge through bleeding device;
  • Fire safe, anti-static and anti-blowout stem design;
  • Stem key limit device ensure the valve switch position;
  • Extended stem available for underground installation;
  • Transit sleeve pipe available for BW ends if needed.

   API 6D single welding fully welded ball valvesFlange ends fully welded spherical body ball valvesFully welded ball valve with pup piece pipe

Product range:

  • Size: 2"56"
  • Pressure rating: Class 1502500
  • End connection: RF, RTJ, BW
  • Body materials: carbon steel A105, low temperature steel LF2, stainless steel F304, F316, F304L, and F316L, duplex stainless steel F51 and F53, super duplex stainless steel F55 etc.
  • Seat materials: PTFE, RPTFE, NYLON, DEVLON, PEEK, PPL, FKM or metal to metal seal etc.
  • Operation: Bare stem, Wrench, gear, electric, pneumatic, electro-hydraulic, gas over oil actuator

Technical standards:

  • Design: API 6D
  • Face to Face: API 6D
  • BW ends: ASME B16.25, ASME B31.8
  • Flanged ends: ASME B16.5, ASME B16.47
  • Wall thickness: ASME B16.34
  • Fireproof test: API 607, API 6FA
  • Test and inspection: API 598, API 6D
  • Pressure and temperature rating: ASME B16.34