Vent 22 also includes {HEAD ~ a generally disk shaped area} 44 of {TAIL ~ flask top} 16 for interconnection with valve 46 
of
Vent 22 also includes { HEAD ~ a generally disk shaped area } 44 of { TAIL ~ flask top } 16 for interconnection with valve 46
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH