Pump 2, which is preferably {HEAD ~ a centrifugal pump} picks up {TAIL ~ the water} to be treated 1 and pumps through flowmeter 3 
Pump 2 , which is preferably { HEAD ~ a centrifugal pump } picks up { TAIL ~ the water } to be treated 1 and pumps through flowmeter 3
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH