A controller 64 provides {TAIL ~ signals} to {HEAD ~ flow controllers} 54, 55, 56, 61 and 62 and pump 38 
A controller 64 provides { TAIL ~ signals } to { HEAD ~ flow controllers } 54 , 55 , 56 , 61 and 62 and pump 38
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH