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