Breakaway couplings are safety devices installed between the fueling hose and dispenser. They are designed to detach safely if a vehicle drives away with the nozzle still connected. This prevents damage to the dispenser and stops gas from escaping.
When excessive force is applied, the coupling separates and triggers an internal valve that instantly seals both sides. This containment mechanism prevents high-pressure gas from leaking into the environment, avoiding serious safety risks.
Breakaway couplings protect station equipment, reduce repair costs, and enhance overall operational safety. They are mandatory in modern CNG fueling stations and undergo strict durability and response-force testing.