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Posted by Steve Lusardi on May 15, 2008, 4:20 am
Please log in for more thread options Spehro,
Thanks for your response. It gives me some peace of mind.
Steve
> On Wed, 14 May 2008 17:47:45 +0200, "Steve Lusardi"
>
>>Will urine ie human waste corrode 316L valves and pipe? The question is
>>asked because waste tanks are typically plastic, but Lloyds A1
>>certification
>>requires all through hull valves to be fire proof. Fireproof valves are
>>typically 316L. I have purchased all my valves from the chemical industry.
>>I
>>have been told that urine will corrode 316 over time. I don't believe it.
>>If
>>316 is good enough for corrosives in industry, why would it not stand up
>>to
>>human waste? If anybody knows for sure, please let me know.
>>Steve
>>
>
> Here's a chemical compatibility chart, which shows 316's performance
> as "Excellent" in this application:
>
> http://www.sscableties.com/chem_pz.htm
>
> 316L (low carbon) should have very similar chemical resistance
> properties at reasonable temperatures.
> Best regards,
> Spehro Pefhany
> --
> "it's the network..." "The Journey is the reward"
> speff@interlog.com Info for manufacturers:
> http://www.trexon.com
> Embedded software/hardware/analog Info for designers:
> http://www.speff.com
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>asked because waste tanks are typically plastic, but Lloyds A1 certification
>requires all through hull valves to be fire proof. Fireproof valves are
>typically 316L. I have purchased all my valves from the chemical industry. I
>have been told that urine will corrode 316 over time. I don't believe it. If
>316 is good enough for corrosives in industry, why would it not stand up to
>human waste? If anybody knows for sure, please let me know.
>Steve
>