An interference fit between cylindrical valve member 24b and valve seat 34 permits {HEAD ~ rotation} of {TAIL ~ cylindrical valve member 24b} within valve body 24a, while providing a watertight seal therebetween 
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An interference fit between cylindrical valve member 24b and valve seat 34 permits { HEAD ~ rotation } of { TAIL ~ cylindrical valve member 24b } within valve body 24a , while providing a watertight seal therebetween
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH