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