Nut shoulder 25 contacts {TAIL ~ nut} retaining ring 75, housed within {HEAD ~ valve stem annular valley} 448, and axially moves stem 419 away from valve body 15 
Nut shoulder 25 contacts { TAIL ~ nut } retaining ring 75 , housed within { HEAD ~ valve stem annular valley } 448 , and axially moves stem 419 away from valve body 15
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH