An additional broad aspect relates to a valve having {TAIL ~ an actuating diaphragm} that cooperates with {HEAD ~ a sealing diaphragm} to open and close the valve 
An additional broad aspect relates to a valve having { TAIL ~ an actuating diaphragm } that cooperates with { HEAD ~ a sealing diaphragm } to open and close the valve
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH