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DBB ball valve is burn for replace the traditional complex line connection ball valve, reduce leak in the system and achieve emissions fast, close the function. Double block and bleed ball valve utmost saves installation space. Double Block and Bleed Ball Valves are aimed to get a double barrier on the piping, and bleed the fluid trapped between the two balls from a dedicated drain line.
Design Feature
  • 3PC body
  • Emergency seal
  • Stem extension
  • Blowout-proof stem
  • Antic-static design
  • Emergency seal
  • Zero leakage
  • Anti-static design
  • Fire safe design
Design Standard
  • Design: API 6D/ASME B16.34
  • Face to face: API6D/ASME16.1
  • End connection: ASME B16.5 / ASME B16.47
  • Test: API598 / API6D
  • Fire safe: API607 / API6FA
Technical Specification
  • Size: 1/2”~24”
  • Class: 150Lb~2500Lb
  • Connection: Double flange
  • Operation: Manual / Worm Gear
  • Temperature: -60°C to +180°C
  • Application: Petrochemical / natural gas chemical industry
Material Option
  • Body: Carbon steel(A105,LF2) / 
    Stainless steel(F304,F316,F304L,F316L) / 
    Duplex stainless steel(F51,F53)
  • Ball: Carbon steel(A105+ENP,LF2+ENP) / 
    Stainless steel(F304,F316,F304L,F316L) / 
    Duplex stainless steel(F51,F53) 
  • Stem: F6a / 17-4PH / F304 / F316 / F51 / F53
  • Soft seat: PTFE / RPTFE  / PEEK / Nylon / Devlon
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