upper chambers 114 115 include an enlarged stepped region 118 in which o rings 120 are mounted o rings 120 are captured between region 118 and washers 122 which are mounted in first valve block 46 to surround the tops of lower valve chambers 98 99 washers 122 keep o rings 120 from entering l shaped portions 100 101 o rings 120 provide the valve seat for cylindrical spool valve portions 124 126 of syrup and soda valve pins 128 130 respectively as is illustrated in fig4 soda passes through soda hose 36 into first soda entrance 68 through l shaped soda connecting portion 101 of second soda opening 92 and into lower soda valve chamber 99 of second soda opening 92 when soda valve pin 130 is in the button depressed or extended position not shown soda flows past o ring 120 through upper soda valve chamber 115 after which it reverses direction in l shaped soda connecting portions 117 and passes downwardly through the four soda discharge openings 108 for passage through nozzle assembly 52 the various syrups take similar routes but only pass through a single syrup discharge opening 106 to which the particular second syrup opening 90 is connected by its associated third syrup opening 110 nozzle assembly 52 includes an outer hollow member 136 and an inner member 138 housed within outer member 136 inner member 138 is cylindrical with its upper end cemented within a circular flange 142 extending from lower surface 54 of.