having a relatively smooth surface on finger actuatable portion 16e portion 16e or parts thereof may be provided with a ridged surface such a ridged surface provides frictional resistance with a user 39 s finger to facilitate movement of finger actuatable portion 16e with respect to valve actuator 14 referring specifically to fig5 there is illustrated a side view of latch 16 latch 16 is preferably symmetrical latch 16 is sufficiently flexible in a first direction f1 inward so as to align tip portion 16d with cavity 27 even though elongated portion 16f is somewhat constrained in its ability to more inward it is desirable that the material from which latch 16 is constructed is relatively rigid material which is sufficiently resilient to permit movement of finger actuatable portion 16e inward so as to at least partially align tip portion 16d with cavity 27 latch 16 is preferably constructed from any sufficiently resilient metal or elastomer although a wide variety of other suitable materials having a sufficient degree of elastic memory may be employed referring now to fig6 and 7 there are depicted views of the underside fig6 and of the top side fig7 of valve actuator 14 of fig4 recess 33 is adapted to receive spring 30 as depicted in fig3 and may take on a variety of forms such as a simple indentation or alternatively a bore partially into valve actuator 14 and having a center pin 58 extensions 60 and a chamfered edge 62 the fuel nozzle is maintained in bore 38 by fuel nozzle.