"Breakaway valves are designed to separate when errant drivers pull away from dispenser with a nozzle (and hose) still in their vehicle’s fill-tank. Under a drive-away situation, these valves prevent fuel spills and damaged equipment. " "The Husky Safe-T-Break is easily installed on existing hoses, is compact yet with high flow characteristics. The unit includes Husky’s patented double butterfly " "valves that instantly close when subjected to a 250 lb. pull. It resists galvanic corrosion and does not require lubrication. BSPT and BSPP threading available. " UL and ULC listed.