Underbuoy-Petal-Valve-Breakaway-Coupling

Petal Valve Underbuoy UBC

The benefits of the Gall Thomson UBC Petal Valve


  • Zero headloss
  • Valve components are protected against in-line erosion and corrosion
  • No valve clogging
  • Piggable
Click here to request the new Gall Thomson UBC Product Guide

Illustrated: Sequential Controlled Single Closure


  1. Petal Valves are locked in open position by sealed hydraulics and/or the internal sleeve prior to activation.
  2. The coupling separates and combined energy of bias springs and product velocity instigates petal closure.
  3. The petals seat together and close flow.

Double Closure Underbuoy Breakaway Coupling is also available

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Information paper on Marine Breakaway Couplings 

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Marine Breakaway Couplings

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Marine Breakaway Couplings