OPW-66V-0300 Breakaway – 3/4" One-Time Fuel Hose Breakaway The OPW66V-0300 is a 3/4 inch one-time breakaway coupling designed to protect fuel dispensers, piping, and hoses in the event of a drive-off. Engineered for reliability and safety, this breakaway instantly separates under excessive pull force, automatically shutting off fuel flow on both ends to minimize spills, environmental damage, and costly equipment repairs. Constructed with heavy-duty materials and precision internal valves, the 66V-0300 is ideal for gasoline and diesel service in retail fueling stations. Once activated, the unit must be replaced, ensuring compliance with safety standards and preventing reuse after separation.