By this mechanism {HEAD ~ high flow rates} are accommodated without causing {TAIL ~ premature activation} of the safety relief valve 
are accommodated without causing
By this mechanism { HEAD ~ high flow rates } are accommodated without causing { TAIL ~ premature activation } of the safety relief valve
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH