The pressure applied against opposite sides of the workpiece is increased by heating the fluid in {HEAD ~ the autoclave} and {TAIL ~ the housing} 
The pressure applied against opposite sides of the workpiece is increased by heating the fluid in { HEAD ~ the autoclave } and { TAIL ~ the housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL