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About Gall Thomson | Marine Breakaway Coupling Specialists

Gall Thomson Environmental Ltd is a world-leading specialist in the design, manufacture and supply of Marine Breakaway Couplings (MBCs) and offshore liquid transfer safety solutions. Based in Great Yarmouth, Norfolk, the company has over 40 years of experience providing innovative engineering technology that helps protect marine operations, personnel and the environment from the risks associated with offshore oil and liquid product transfers.

Recognised internationally for its pioneering technology, Gall Thomson introduced its Marine Breakaway Coupling in 1979, revolutionising safety standards within the offshore oil and gas industry. These precision-engineered devices are designed to automatically shut off liquid flow when excessive pressure or tension occurs within a marine hose transfer system, helping to prevent major spills, equipment damage and environmental incidents.

<Gall Thomson offers an extensive range of marine safety products, including Petal17, PetalC and Flip-Flap Marine Breakaway Couplings, alongside specialist offshore transfer equipment, emergency release solutions, underbuoy couplings and quick-connect systems. Each product is developed to meet the demanding operational requirements of marine terminals, offshore installations and global energy operators.

With equipment supplied to major oil companies and marine operators worldwide, Gall Thomson has established a reputation for engineering excellence, product reliability and proven performance. Its commitment to innovation, precision manufacturing and rigorous testing ensures that customers benefit from dependable equipment designed for challenging offshore environments.

In addition to its specialist marine coupling technology, Gall Thomson provides servicing, resetting and certification support to help operators maintain equipment performance and operational safety.

Through decades of technical expertise and continuous product development, Gall Thomson remains at the forefront of marine breakaway coupling technology, helping offshore industries reduce operational risks, minimise environmental impact and maintain safer, more efficient liquid transfer operations.

For further information about Gall Thomson's Marine Breakaway Couplings, offshore safety equipment and specialist engineering solutions, please visit our website. 


Applications

  • ASME Flange Connection After Separation

  • CBM Butterfly Valve Closure Risks

  • CBM Coupling Design Parting Loads

  • CBM Deck Equipment Failure Protection

  • CBM First Hose Coupling Position

  • CBM Heavy Product Transfer Protection

  • CBM High Flow Rate Protection

  • CBM Hose Flushing Safety Planning

  • CBM Hose String Arrangement Planning

  • CBM Liquid Product Valve Selection

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FAQ

  • Are breakaway couplings used at marine terminals?

  • Are Marine Breakaway Couplings suitable for crude oil?

  • Can breakaway couplings help reduce FPSO downtime?

  • Can breakaway couplings reduce oil spill risks?

  • Can Marine Breakaway Couplings protect floating hoses?

  • Can Petal Valve couplings be pigged?

  • Can PODx be fitted to existing offshore equipment?

  • Can PODx be operated remotely?

  • Do marine hoses need breakaway protection?

  • Does a Marine Breakaway Coupling need manual activation?

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Products

  • Active Emergency Transfer Shutdown

  • Active Offshore Transfer Protection

  • Advanced Petal17 Safety Engineering

  • Anticipated Offshore Emergency Release

  • Automatic Product Flow Shut-Off

  • Automatic Safe Parting Point

  • Calibrated Breakaway Load Design

  • Camlock Blanking Flange Accessories

  • Compact Marine Breakaway Design

  • Compact Offshore Hydraulic Systems

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