The pump chamber 5 is thus defined by {TAIL ~ the ring} 1, {HEAD ~ the side plate} 2, and the diaphragm 4 
The pump chamber 5 is thus defined by { TAIL ~ the ring } 1 , { HEAD ~ the side plate } 2 , and the diaphragm 4
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH