We use them to give you the best experience. If you continue using our website, we’ll assume that you are happy to receive all cookies on this website. The marine breakaway coupling is a vital component in offshore crude oil and refined product transfer systems. The MBC operates within a floating or subsea hose string and will activate and shut down flow when an event occurs. This activation is instigated by undue overload during tanker loading or discharging (for example, tanker breakout), or an extreme pressure surge. If marine breakaway couplings are not fitted then the resulting oil spill and trauma to the transfer system may cause damage to hoses and equipment, injury to personnel, extended downtime, costly oil spill clean-up and environmental pollution. Gall Thomson invented the petal valve MBC, conceived the flip-flap valve MBC and continues to be the world leader in the design and manufacture of safety marine breakaway coupling technology. This proven technology means the Gall Thomson Petal Valve MBC and the Gall Thomson Flip-Flap Valve MBC are the industry standards for marine breakaway couplings. These breakaway couplings offer an unmatched record for reliability...