Sud Robinetterie Industrie (SRi)
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SRIDouble Block and Bleed Trunnion Ball Valve (DBB)

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Double Block and Bleed (DBB) ball valve is made of two balls in one valve body. A bleeder is added between the two balls of the valve. This system is equivalent to a Double Isolation Bleed (DIB) single ball valve.

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Range

  • ND 3/4" (DN20) to ND 24" (DN600)

Classes

  • ASME CLASS 150 to 2500
  • DIN-PN PN 10 to 64

Material

  • Carbon & low alloy Steels
  • Stainless steels
  • Duplex & Super Duplex
  • Nickel Alloys
  • Titanium
Design features
  • API 6D/6A design & construction
  • API 6D & ASME B1610 face to face
  • Antistatic device
  • Double block and bleed (DBB)
  • Drain plug

On request

  • Full/reduced/customize bore
  • Manual or actuated operation

Optional Design features

  • Automatic bleeding system
  • By-pass system
  • Double Piston Effect (DPE)
  • Double Isolation & Bleed (DIB)
  • ENP on seat/ball/stem/body
  • Extended stem
  • Heating jacket
  • Locking device
  • Metal to metal seats
  • Needle plug
  • Overlay on seat pocket
  • Overlay on dynamic seal pockets
  • Overlay on all wetted parts
  • Polymeric lip-seals
  • Single Piston Effect
  • Stem injection fitting
  • Seat injection fitting
  • Transition pups pieces BW ends