The steam boiler operates at a pressure above that needed for {HEAD ~ consumption} in the process chamber and uses {TAIL ~ highly purified water} 
The steam boiler operates at a pressure above that needed for { HEAD ~ consumption } in the process chamber and uses { TAIL ~ highly purified water }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL