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Alternative to copper tubing for lpg Jeff Dieterle 04-07-2008
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Posted by Rudy on April 8, 2008, 9:24 pm
> gfretwell@aol.com wrote:
> ...
>
>> I don't suppose pipe rusts in your area
>
> Of course it does, but it's less of an issue than galvanized in contact w/
> certain contaminants in gas,

Here is what I used for mine..its a pale pastel green pipe-coating..I bought
it in threaded lengths from a local plumbimg supply dealer. Local codes
also insisted on a black tape-wrap for the underground portion.

R



Posted by on April 8, 2008, 10:40 pm

>gfretwell@aol.com wrote:
>...
>
>> I don't suppose pipe rusts in your area
>
>Of course it does, but it's less of an issue than galvanized in contact
>w/ certain contaminants in gas, hence the historic proscription. I've
>heard the flaking and orifice theory before as well, but never found it
>codified for that specific reason (that's only saying I'm unaware of
>where to find it written, not that it hasn't been).

The gas companies in SW Fla seem to have overcome those problems. In
fact the factory pipe in my pool heater is galvanized.

Posted by dpb on April 9, 2008, 9:36 am
gfretwell@aol.com wrote:
...

> The gas companies in SW Fla seem to have overcome those problems. In
> fact the factory pipe in my pool heater is galvanized.

I said it was historic and that there were some recent reports
indicating it was less of a problem than some earlier data had implied.
As with anything else, new information eventually supercedes older.

Some of us old fogey's stay w/ what we were taught...I doubt I'll ever
get over the rule. :)

--

Posted by on April 9, 2008, 11:59 am

>gfretwell@aol.com wrote:
>...
>
>> The gas companies in SW Fla seem to have overcome those problems. In
>> fact the factory pipe in my pool heater is galvanized.
>
>I said it was historic and that there were some recent reports
>indicating it was less of a problem than some earlier data had implied.
> As with anything else, new information eventually supercedes older.
>
>Some of us old fogey's stay w/ what we were taught...I doubt I'll ever
>get over the rule. :)

It could be as simple as they improved the galvanizing process so they
don't flake anymore but you do put a trap in a gas line right before
the appliance anyway (that dead end on the last "T")

Posted by dpb on April 9, 2008, 12:03 pm
gfretwell@aol.com wrote:
>
>> gfretwell@aol.com wrote:
>> ...
>>
>>> The gas companies in SW Fla seem to have overcome those problems. In
>>> fact the factory pipe in my pool heater is galvanized.
>> I said it was historic and that there were some recent reports
>> indicating it was less of a problem than some earlier data had implied.
>> As with anything else, new information eventually supercedes older.
>>
>> Some of us old fogey's stay w/ what we were taught...I doubt I'll ever
>> get over the rule. :)
>
> It could be as simple as they improved the galvanizing process so they
> don't flake anymore but you do put a trap in a gas line right before
> the appliance anyway (that dead end on the last "T")

Again the flaking wasn't the major issue in anything I'm aware of--it
was contaminants in the gas react w/ the Zn in the galvanize to cause
premature failure by corrosion.

--

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