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