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Re: Whats the sodium for?

Would it have to?  I'm sure however long it takes, it gets the heat from 
the bottom to the top, in a continuous manner.  It's not like it would 
have to go through one circulatory cycle for each time the valve closes 
and opens.


"David L. Cooper" <d.cooper@ix.netcom.com> wrote:
> Can this happen in a fraction of a second?
> Douglas Hurst Quebbeman wrote:
> > Sodium melts at 97.8 deg. C (208 deg F). So yes, I'd
> > say it's definitely melting. So simple convective
> > cooling is taking place. Once the sodium has melted,
> > the hotter sodium rises up away from the valve face,
> > carrying the heat to the valve stem, where it's then
> > conducted out by the rest of the valve train. Then, as
> > the sodium cools, it falls back down the valve stem
> > toward the valve face, where all the heat is being
> > generated.