whereby control of the fluid communication is effected by a resilient, non perforated diaphragm having {HEAD ~ a seat} engaging {TAIL ~ side} and a seat engaging side first surface area, the diaphragm adapted to float within the valve chamber and to inter engage the valve seat to selectably block fluid flow through the valve seat gas port 
engaging
whereby control of the fluid communication is effected by a resilient , non perforated diaphragm having { HEAD ~ a seat } engaging { TAIL ~ side } and a seat engaging side first surface area , the diaphragm adapted to float within the valve chamber and to inter engage the valve seat to selectably block fluid flow through the valve seat gas port
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH