a discrete loose magnet 6 that is shown sitting on top of cover 4 and in close proximity to control 3 for reasons which will subsequently be explained the selector switch unit 3su preferably has three separate switches 7 8 and 9 for small medium and large size portions respectively switch unit 3su for purposes of this invention can have one or more switches switch unit 3su also has a discrete cancel pour switch 10 head 1 also preferably has a relatively short depending actuator lever 11 as shown in fig2 control housing 3 comprises a hermetically sealed box from which extends leads 12 13 and 14 a control circuit is held within housing 3 and is generally indicated by the numeral 16 the schematic of which is shown in fig3 control 16 includes a microprocessor based controller chip 15 which is operatively connected to the switches 7 8 9 and 10 and in the present invention a motorola model el1600 ic chip is used power to control circuit 16 is provided at terminals 17 and 19 which are converted to leads 12 and 14 respectively terminal 18 supplies power via lead 13 to one or more beverage dispense solenoids 22 a conventional mechanical dispensing actuator switch 23 is installed in the wiring with lead 12 being connected to an nc terminal lead 14a being connected to an no terminal and solenoid lead 24 being connected to a c terminal of the actuator switch 23 actuator switch 23 is operatively connected to actuator lever 11 referring back to fig1 a beverage conduit 25 extends through head 1 and has an inlet 26 connectible to a source of beverage 27 and an outlet 28 of nozzle 2 a normally closed nc dispensing valve 29 is disposed.