Underpressure arises due to condensation of the steam from the steam gas mixture, leaving {HEAD ~ dryer} 15, in {TAIL ~ condenser} 16 and gas evacuation of non condensing gases by vacuum pump 17 
Underpressure arises due to condensation of the steam from the steam gas mixture , leaving { HEAD ~ dryer } 15 , in { TAIL ~ condenser } 16 and gas evacuation of non condensing gases by vacuum pump 17
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH