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Old 02-27-2013, 11:57 PM   #1
phishfood
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Default Gas meter tie in

This is a project that has been going on for awhile. There's two separate gas systems here, one to service the generator and exterior lighting, and another to service the future residence. The gas piping is only part of the project, but I thought that this particular section was especially photogenic.



Palladio gas meter piping 1.jpg   Palladio gas meter piping 2.jpg   Palladio gas meter piping 3.jpg   Palladio gas meter piping 4.jpg   Palladio gas meter piping 5.jpg  

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Old 02-28-2013, 02:24 AM   #2
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Looks good! Is galvanized pretty typical? I've never used it up here, only saw it in service for water and drainage in old homes. We pretty well only use black iron with the black lacquer finish



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Old 02-28-2013, 03:09 AM   #3
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Is that valve going to cause electrolysis?

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Old 02-28-2013, 03:46 AM   #4
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I think technically it should however whenever I've put in gas lines we've always used brass ball valves with black iron piping which should be the same idea. Good point though, I've never had an issue or came across that before.

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Old 02-28-2013, 04:13 AM   #5
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I think it would effect water pipe more but in theory i guess it could rot it out quicker. They don't make a Galv gas valve do they?

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Old 02-28-2013, 01:53 PM   #6
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Not that I've seen, I've only saw brass ones but you never know haha. Electrolysis could happen technically according to the nobility of the metals but they do claim brass shouldn't be subject to it. I think over a period of time it could happen no doubt. And yeah water lines I've saw brass FIPs and galvanized have electrolysis

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Old 02-28-2013, 01:53 PM   #7
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On water heaters

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Old 02-28-2013, 11:11 PM   #8
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I know with water flowing through the lines, electrolysis is an issue. To the best of my knowledge, a closed system such as a heating system does not really suffer from that as much as an open system that always has fresh water introduced to it.

So considering that this is a gas system, I am not concerned with electrolysis. It is common practice to use brass valves on gas systems, either with black steel or galvanized.

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Old 03-01-2013, 12:22 AM   #9
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Yeah the flow on the gas line probably wouldn't be enough to cause electrolysis, but the water lines make sense.

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Old 05-01-2013, 10:53 PM   #10
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In Massachusetts it is illegal to use galvanized fittings or pipe in natural gas systems
JK



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