Pre Pay Nozzle [1]

A nozzle [2] that ensures that the fuel-flow valve is closed before the nozzle is returned to the dispenser. A pre pay nozzle may meet this requirement by using at least one of the following:

1. Not being equipped with a hold-open latch. 
2. Being equipped with a mechanical interlock that closes the fuel-flow valve unless the spout is inserted in a vehicle-fill pipe. 
3. Being equipped with a no pressure/no flow feature that closes the fuel-flow valve automatically when there is no fuel pressure at the nozzle inlet, regardless of the position of the nozzle. 
4. Being equipped with a feature that releases the hold-open mechanism with the nozzle is returned to the dispenser.

See also Nozzle [2], Leaded gasoline nozzle [3], Diesel nozzle [4], balance Stage II vapor recovery nozzle [5],  Vacuum assist Stage II recovery nozzle [6] and PEI/RP500 [7].