This provides a safety feature in that valve stem 419 is not inadvertently removed from {HEAD ~ braze body} 417 during {TAIL ~ the rotation} of nut 23 
This provides a safety feature in that valve stem 419 is not inadvertently removed from { HEAD ~ braze body } 417 during { TAIL ~ the rotation } of nut 23
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH