Do you know what is a gasoline nozzle?An emergency shut-off valve is designed to be retrofitted into an existing gasoline nozzle by interposing the shut-off valve between the handle assembly and nozzle assembly of an existing gasoline dispensing nozzle.
The inventive shut-off valve is spring biased in a closing direction and is held open by a protrusion extending proximal of the nozzle portion of the existing gasoline dispensing nozzle so that with the shut-off valve assembled between the existing handle assembly and nozzle assembly, the valve is held open. A sleeve having a weakened annulus holds the nozzle assembly onto the shut-off valve. If a driver drives away from a gasoline dispensing pump with the nozzle remaining within the gas tank opening, the weakened area fails allowing the sleeve to separate and the nozzle assembly to remove itself from the shut-off valve causing the shut-off valve to instantaneously close preventing fuel spillage. Embodiments of vapor recovery structure are also disclosed.
http://www.seekpart.com/hydraulic-pneumatic/pumps/gasoline+nozzle.html
