Abstract: A nozzle having a valve housing and an elongated tube extending therefrom. The nozzle is provided with at least a slot near its open end. A latch is mounted within the nozzle which is movable between a first position, extending outwardly of the slot and a second position inwardly within the nozzle. The latch may be spring-biased or normally controlled to extend outwardly, so that once inserted within the vehicle, the gas tank will lockingly engage under its lip. The latch is provided with structure operable from the exterior of the nozzle which can selectively retract the latch and release the nozzle from the gas tank.