A backflush line has an outlet disposed downstream of the filter, and a backflush pump is configured to supply backflush fluid through {HEAD ~ the backflush line} against {TAIL ~ the filter} 
against
A backflush line has an outlet disposed downstream of the filter , and a backflush pump is configured to supply backflush fluid through { HEAD ~ the backflush line } against { TAIL ~ the filter }
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 REL TAIL TAIL TAIL TAIL TAIL TAIL