The valve comprises a valve chamber, {TAIL ~ a valve chamber seat} with {HEAD ~ an inlet gas port} or ports to the interior of the container and a resilient diaphragm floating within the chamber 
The valve comprises a valve chamber , { TAIL ~ a valve chamber seat } with { HEAD ~ an inlet gas port } or ports to the interior of the container and a resilient diaphragm floating within the chamber
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH