Flip-Flap-Valve-Underbuoy-UBC

Flip-Flap Valve Underbuoy UBC

The benefits of the Gall Thomson UBC Flip-Flap Valve


  • Minimum headloss
  • 100% shut-off
Click here to request the new Gall Thomson UBC Product Guide

Illustrated: Flip-Flap Sequential Closure


  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.
Flip-Flap-Sequential-Closure-16x9

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