I'm buying a condo in Providence, RI. The place has old galvanized natural gas pipes. It seems like most houses in this area have the same type of pipes, and the real state agents / sellers say that it's fine to have them. However, the inspector say that it's really bad since the pipes will erode and clog (zinc reacting with gas).
Can anybody point out if this is ok/tolerable/bad and why? (also, is it legal to keep using galvanized pipes in Providence, RI?)
Rob O2008-06-03T05:02:05Z
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Well.......I, for one, don't agree. Here in Canada, we adhere to the CSA Standard B149.1-05, which indicates that steel gas piping needs to conform to ASTM A53, which is a standard for seamless and welded, black AND hot dipped galvanized pipe. C'mon, if you're putting in your dirt pockets at the appliance, the internal issue is moot. If the piping is exposed to the elements and the ambient environment is harsh, (salt spray, etc.), then the benefit of galvanized outweighs any remote possibility of 'clogged orifices'. Honestly, I've been a pipefitter for 30 years myself - how many of you out there have even seen a clogged orifice? - Never, I'd bet
RE: How bad are galvanized pipes for natural gas? I'm buying a condo in Providence, RI. The place has old galvanized natural gas pipes. It seems like most houses in this area have the same type of pipes, and the real state agents / sellers say that it's fine to have them. However, the inspector say that it's really bad since the pipes...
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There was a time when some jurisdictions did not allow galvanized because of the possibility of the zinc coating flaking off inside the pipe, and clogging orifices and valves. Most places do allow it now. Figure the drip legs take care of problems. Some areas still allow black outside but require it to be painted. The advantage of Black is that it is a little cheaper.