Smart-Hose safety system automatically shuts off flow of industrial fluids or gases in both directions the instant a hose failure takes place. It connects a coated cable within the hose bore to valve plungers, wedges, or flappers at hose end joints. Acting as a compression spring, this cable holds valves open when conditions are normal. When thrust is eliminated due to coupling ejection, hose stretching or separation, both valves seat themselves to halt flow.