{HEAD ~ a sealing portion} disposed between the guide portion and the tip portion and disposed adjacent {TAIL ~ the valve seat} and 
disposed adjacent
{ HEAD ~ a sealing portion } disposed between the guide portion and the tip portion and disposed adjacent { TAIL ~ the valve seat } and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH