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RE: Co2 corrosiveness with air distribution valve systems.

NACE (National Association of Corrosion Engineers) does not consider dry 
carbon dioxide to be corrosive in either the liquid or vapor form.

It is a different story when it contains even a slight amount of moisture. 
Even further complicating matters, a very slight presence of H2S raises the 
corrosivity a LOT in the presence of moisture..

Douglas Guynn
	dguynn at nwol_net

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