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