quote from http://www.sacskyranch.com/statichose.htm :
> Static charge generation occurs as liquids flow through hoses and is
> dependent upon the potential of the hose surface to accept or donate
> electrons, the speed at which the liquid is moving and the
> conductivity of the hose liner. Electrostatic discharge in the form
> of an electric spark occurs from the hose inner tube to the steel
> braid thereby creating a pin hole leak.
>
That would seem to indicate that the potential for triboelectric
pinholes is a consequence of the steel braid surface of the hose.
I have used automotive R9 EFI hose (w/ the blue teflon liner)...(at
$6/7 dollars/foot, it's not exactly "cheap")...I have planned on using
steel braid on only those hoses which are forward of the firewall...if
I carry out that plan, it sounds like all will be well if I use the
Mil Spec. MIL-H-25579E hose forward of the firewall or where ever
steel braid is used.
I would be grateful for any comments anyone?
Fred
A194
On Mar 17, 2010, at 4:36 PM, rparigor@suffolk.lib.ny.us wrote:
> Hi Fred
> "How thin is "thin teflon"? Is automotive EFI R9 hose lined w/
> "thin" teflon, or something thicker to deal w/ the issue you
> describe? If the R9 hose w/ the blue teflon liner IS subject to
> triboelectric pinholes, why doesn't it concern the auto
> manufacturers?"
> Here is a bit more info:
> http://www.sacskyranch.com/statichose.htm
> Ron Parigoris
>
>
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