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