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Twin Seal Plug Valve

The Twin Seal valve is an alternative to the original two-valve system with just one double-seated bubble-tight valve. The upstream and downstream seals provide the same function as the two block valves. The body (serving as a spool piece) bleed verifies seal integrity.
  • Design Feature

    • Full bore/reduce bore

    • Double block and bleed

    • Double seal

    • Close quickly

    • Zero leakage

    • Anti-static design

    • Fire safe design

  • Design Standard

    • Design: API 6D / API599

    • Face to face: API6D / ASME B16.10

    • Flange end:  ASME 16.5 / ASME 16.47   

    • Test: API598 / API6D

  • Technical Specification

    • Size: 2”~32”

    • Class: 150Lb~600Lb

    • Connection: Double flange

    • Operation:  Worm Gear / Electric actuator

    • Temperature: -60°C to +160°C

    • Application: Aviation fuel / oil storage / chemical industry

  • Material Option

    • Body: Carbon steel(WCB,LCB) / 
      Stainless steel(CF8,CF8M,CF3,CF3M)
    • Plug:  Carbon steel(WCB+ENP,LCB+ENP) / 
      Stainless steel(CF8,CF8M,CF3,CF3M)
    • Stem: F6a / 17-4PH / F316

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