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Author:
Don411 (KY)
Replacing the 1/2" heavily rusted black iron pipe that runs along and just below the frame of the RV....is it OK to use galvanized for propane, or do I need to stay with plain black pipe?
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Author:
hj
Either one is okay.
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Author:
waukeshaplumbing (WI)
galvanized is better...it costs more thats why people use black pipe
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Author:
Don411 (KY)
Thanks...galvanized with brass fittings for the flare connections to the appliances.
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Author:
packy
galvanized does cost more but that is not the reason it is not commonly used in massachusetts. it is illegal to use it as gas paiping.
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Author:
Don411 (KY)
OK...why is it illegal to use galvanized pipe for gas in MA? Or is it just illegal for underground burial? I know many codes require that new yellow viynl-wrapped pipe for underground usage now. Turns out galvanized rusts eventually when installed underground.
Does anyone know the reqason why galvanized pipe is not allowed for gas in MA?
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Author:
hj
The original reason was that the gas composition caused the galvanizing to flake off and plug the orifices. Most gas no longer has that problem. Here, galvanized is required outdoors above ground. Underground there are specific metal pipes which can be used.
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Author:
Don411 (KY)
When you say "Most Gas", is the composition of propane consistent enough around the counrty where it won't be a problem?
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Author:
hj
The problem was only with natural gas, not propane.
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Author:
mr leak (CA)
Propane is consistent around the country. First of all galvanized pipe is not to be used underground and used outside is ok if 6 inches above the earth. For a time galvanized pipe quality was in question and there was a concern that the zinc coating might hide pin holes in the pipe consequently leading to leaks but that argument did not appear to hold up.
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Author:
Don411 (KY)
Thanks guys, I think I'm gonna go with the galvanized. Again, this pipe runs along the bottom of the frame on the RV, so it's 12" +/1 off the ground, but exposed to road grime, salt, etc. Other option is to stay with black pipe and paint it, but with the cost of spray paint, not sure that's any cheaper. Iron pipe is the only that's allowed according to the RV code, so copper is out for the main runs.
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Author:
hj
quote; according to the RV code
RV and "code" in the same sentence. Isn't that an oxymoron?
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Author:
Don411 (KY)
LOL....actually the RV Industry Assn (RVIA) has manufacturers signed up for construction standards, safety codes, etc. Canada has a very strict requirement that is law, so mfrs that sell in CA must meet that as well. We could use similar in the US. In general, RV are much safer in terms of gas/electric than they used to be. There is a part of the electric code (NEC) that specifically addresses RVs.
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Author:
hj
RVs, mobile homes, and modular homes have their own standards, and that code would make the IPC look like a "model code".
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Author:
Don411 (KY)
Absolutely, but it's better than what it was, and that was....um....nothing.
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