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