This improves the efficiency and economy of {HEAD ~ the steam supply} for {TAIL ~ the process chamber} 38 
for
This improves the efficiency and economy of { HEAD ~ the steam supply } for { TAIL ~ the process chamber } 38
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH