A cleaning system according to the invention is shown to comprise a pair of liquid containers 11 and 12, a mixer 13, and {HEAD ~ a constant displacement pump} 14 for delivering {TAIL ~ liquid} through a conduit 15 to a utilization nozzle or gun not shown 
for delivering
A cleaning system according to the invention is shown to comprise a pair of liquid containers 11 and 12 , a mixer 13 , and { HEAD ~ a constant displacement pump } 14 for delivering { TAIL ~ liquid } through a conduit 15 to a utilization nozzle or gun not shown
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH