| Subject: | Re: for the record water is not corrosive |
| From: | Andrew Grebneff |
| Date: | Sat, 1 May 2004 00:07:01 +1200 |
>In a message dated 4/30/04 12:36:25 AM, hradek@YAHOO.COM writes: > ><< a sealed system should be mostly free of oxygen. >> > >Is there not some unavoidable cavitation on the periphery of the water pump >impeller? > >George Cavitation produces, I think, vacuum "bubbles". The water surface can then return at speed & hit the impeller, thereby eroding (not corroding) it. This also pits boat props. -- Andrew Grebneff Dunedin New Zealand <andrew.grebneff@stonebow.otago.ac.nz> Seashell, Macintosh, VW/Toyota van nut
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