a spring around said closure valve in said {TAIL ~ inner bore urging} said valve normally away from {HEAD ~ closure}, 
a spring around said closure valve in said { TAIL ~ inner bore urging } said valve normally away from { HEAD ~ closure } ,
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH