control means on the opposite side of said diaphragm from said closure valve, having {HEAD ~ a head} bearing against said diaphragm, for acting through said diaphragm to move said {TAIL ~ closure valve} toward and away from closure 
control means on the opposite side of said diaphragm from said closure valve , having { HEAD ~ a head } bearing against said diaphragm , for acting through said diaphragm to move said { TAIL ~ closure valve } toward and away from closure
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH