The valve further includes a second diaphragm cooperating with {HEAD ~ the first diaphragm} to enclose {TAIL ~ a chamber} formed within the valve body 
to enclose
The valve further includes a second diaphragm cooperating with { HEAD ~ the first diaphragm } to enclose { TAIL ~ a chamber } formed within the valve body
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH