{TAIL ~ The valve} 10 includes {HEAD ~ a spring} 4 a diaphragm 6 latching mechanism 8 and a flapper closure member 2 
{ TAIL ~ The valve } 10 includes { HEAD ~ a spring } 4 a diaphragm 6 latching mechanism 8 and a flapper closure member 2
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH