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Nj natural Gas piping

metal1313

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Apr 28, 2009
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clinton NJ
So this is specifically for new jersey residential work, namely my own home in hunterdon county. We are finally getting natural gas run up our road, the main literally circles our street, and stops 300’ away. In preparation for this, coming this fall, I’m working on my plan of attack to run gas lines from one side of the house where the meter will go, to the other. I have a fully finished basement, so it’s not easy to just run it there. I can go up and over, single story ranch with unfinished not useable attic. The total run would be under 60’, including rise and fall. Since this is just for the stove, would 1/2 lines be sufficient or should I go 3/4? Also debating if I should use pipe, or csst flex line. The flex line would be easier to run, less joints and just faster, but I have threaded miles of black pipe, however I no longer own threading tools so I have to source those, adding to the expense.


right now I’m going to convert the stove and dryer back to ng from propane, very easy for me to do, newer appliances and I have the original jets. Then eventually a new furnace(oil forced air) and new water heater. I have to figure out if our existing chimney can be used, or if I can go power vent for the water heater, window locations and such and not too up on codes anymore espicially here
 
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metal1313

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Short answer is no. Even if they did it would put it on the opposite side of the house from the furnace and utility room
 

pizza

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Midwest, USA
Personally, i would only use CSST for short runs and only when absolutely necessary. For example getting from outside to inside the house with a vertical obstacle, or a short run (5-10 feet) to an appliance. Main reason is pressure drop penalty.

Don't write off outdoor routing. Sometimes easiest is best, and you can make it look good on some houses.

What service pressure? Need to know that to calculate.

Read the international fuel and gas code. If you search around, you can find free pdf online. Use tables to calculate pressure drop. Need to know total run length and number of bends. Also number of appliances and their BTU/h.

Call me crazy, but I would ALWAYS oversize the line for future demand. Do it right the first time. Especially for sad, low pressure NG ********.

Do you have a Home Depot near you? They'll cut and thread for you. Usually for free. But call first to make sure they can do it. Sometimes no staff or broken machine.
 
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metal1313

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clinton NJ
I was referring to opposite side of house by furnace area.
Oh, yea that’s easy to run, it’s all of 8 ft from where the meter will go. The kitchen of course is on the opposite side of the house. I don’t think the wife is gonna go for running the line outside. It’s up and over or lots of drywall work
 

yeldogt

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Jan 2, 2012
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18,184
When people say outside -- they may be talking about trenching. It is sometimes just easier to have someone burry the pipe and come up on the other side. Big loop.

I have an outdoor kitchen and I ran a 3/4 pipe about 200' attached to the back of a block wall to get past my pool ... then underground about 60' to my kitchen area. Stove and 48" grill. I had to use galvanized ... wrap the buried stuff in some type of wide rubber tape.

Your gas company can tell you what size you need -- 3/4 will carry a lot of gas -- 1/2 not so much.
 

Jackfre

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Dec 26, 2010
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Location
N CA
Always oversized your gas lines. I’d run 1”. Another option for the piping, especially as you have experience with blk iron pipe is to run the line exposed. Split ring hangers are pretty low profile. Paint the pipe. I have used it for plant hangers and it worked well.
 

jeepxj

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Mar 2, 2008
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17,968
up and over for a stove IMO. i'd do iron up to the attic, then csst to the stove location.

chances of putting in a gas grill on that side of the house? outdoor fire place?

1/2" is not gona handle a range at that distance. so the real question is 3/4 or 1".
 

PoorUB

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Mar 29, 2021
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Fargo, ND
Trench it in if you can. Go large, 1" for just in case. You can buy polyethylene rated for underground gas and the risers to go with it.
 

Walkers

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May 17, 2021
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Cave Creek Az
I wouldn’t go any smaller than 3/4. I think I would put in 1” to the furnace drop, then 3/4 to the stove. If you put in small you limit your future options. I have seen many people regret putting in smaller, but have never heard of anybody regretting putting in too large a pipe.
 
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