A nozzle 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, Leaded gasoline nozzle, Diesel nozzle, balance Stage II vapor recovery nozzle,  Vacuum assist Stage II recovery nozzle and PEI/RP500.