Yes, classic. I have the same problem with "tumbler" when
people talk about locks.

--
Christopher A. Young
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"Ralph Mowery" wrote in message
m...

I think this is the classic case of what a term means.
Instead of valve
stem, maybe valve core should have been used.

My way of thinking , the valve stem is the whole tube
sticking out of the
side of the inertube and the valve core is the part that
screws out of the
valve stem. Then the valve cap is the part that is screwed
over the top of
the valve stem to keep the dirt and such out of the valve.

The valve core is sometimes removed from the valve stem to
air will flow in
faster, or so that you do not have to hold the center part
in when letting
all the air out.