Small Size Forged Steel Ball Valve

DBB Double Block and Bleed Ball Valve RF

Ball Valve Size: NPS 1/2" - 2"

Pressure Rating: ANSI Class 150 - 2500
Valve Materials: A105, LF2, LF3, F5, F11, F22, F304, F316, F304L, F316L, F321, F347, F317, F317L, F310H, F9, F91, F53, Monel 400, Inconel 625, C95500, C95800, ALLOY 20
Design and Manufacture: BS 5351
Face-to-Face: ASME B16.10
End Connection: ASME B16.5, ASME B16.47, ASME B16.25
Test and Inspection: API 598
Operation Method: Manual, Electric Actuator, Pneumatic Actuator
  • Product Detail

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.


  • Process interface in one compact ball/needle/ball valve assembly.
  • Pressure ratings in accordance with ASME B16.5.
  • Flange port compatible with ASME B16.5 RF.
  • Instrument port 1/2"NPT Female (ASME B1.20.1.).
  • Vent port 1/2"NPT Female (ASME B1.20.1.).
  • Temperature range -20ºC/200ºC (-4ºF/392ºF).
  • One-Piece forged body construction.
  • No ejectable ball and needle stem design.


  • RTJ Flange port.

  • Plug in vent port.
  • Instrument & Vent port 1/4"NPT Female.

  • O-ring seals in several materials.

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