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