Flip-Flap Valve Underbuoy UBC - Gall Thomson

Flip-Flap Valve Underbuoy UBC

Underbuoy Flip-Flap Valve Breakaway Coupling

The benefits of the Gall Thomson UBC Flip-Flap Valve
Illustrated: Flip-Flap Sequential Closure

SPM underbuoy Flip-Flap Breakaway Coupling

The benefits of the Gall Thomson UBC Flip-Flap Valve

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  • Minimum headloss
  • 100% shut-off

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Illustrated: Flip-Flap Sequential Closure

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  • 1

    Gall Thomson UBC FlipFlap Valve closure 1

  • 2

    Gall Thomson UBC FlipFlap Valve closure 2

  • 3

    Gall Thomson UBC FlipFlap Valve closure 3

  • 4

    Gall Thomson UBC FlipFlap Valve closure 4


  1. Valve discs are positioned in line with the flow. These lock each other open, offering minimum headloss
  2. The combined energy of the bias springs and product velocity flips the discs through a controlled arc.
  3. The discs continue to rotate until they have moved through 90 degrees.
  4. The discs snap onto their seats; providing 100% leak-free shut-off.