Need pipe size for a gas line.


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Old 12-07-04, 04:44 PM
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Need pipe size for a gas line.

I'm looking for a sizing chart for a 2psi gas line but can't find it anywhere online. I know there are books you can buy but was wondering it there was somewhere online to get this info. Maybe a pdf file or something.

I'm looking to run approx 40 feet from a remote meter with an 1 1/4 meter bar to the main house line, then go another 40 feet to my first tandom furnace pulling 220,000 btu of a total of 550,000 btu and I need to know what size pipe to run from remote meter.

Thanks a lot.
 
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Old 12-08-04, 02:04 PM
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Old 12-08-04, 02:19 PM
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550,000 BTU? Wow.. is this for a house?
 
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Old 12-08-04, 02:45 PM
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Originally Posted by Jay11J
550,000 BTU? Wow.. is this for a house?
No, for a church.
 
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Old 12-08-04, 03:31 PM
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Size

Tbird2340,
Gas pressure for 2.0 psi with a pressure drop of 1.5 psi is commonly known as a Medium Pressure Natural Gas System. The link that Ed posted is a very educational site for explaining the proper method to size a system however there is a vast difference in the capabilities between the two types of systems. I will not go into all of the specifics but this comparison may help you. The system that Ed references and directs you to is a Natural Gas System of 0.60 specific gravity based on a pressure drop of 0.5 inch of water column. In this system a run of less then 100 feet will require a supply size of 1" in order to carry the BTU load you are seeking. Whereas in the medium pressure system a 3/4" supply will carry this load. In your system (Always check with your provider to confirm pressure and gravity) a 3/4" line up to 100 feet will carry 669,000 BTUs. So yes these charts are important and pressure makes a big difference. If I were more computer literate I would happily post the chart. If you get in a bind I will figure out how to post it. Good Luck
 
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Old 12-08-04, 06:09 PM
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Tbird2340 Arent big jobs fun. Put in a 2M in shot burner in a restaurant for the kitchen make up air .Was Lp, ran just a 2 1/2" line to it off a two stage set up on a 18k tank they didnt want to put in a liquid burn off on the Lp so we had to go that big with the tank so as to have enough gas all the time. Fisher Regulator books are good for gas line size I find

ED
 
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Old 01-25-10, 06:22 PM
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For anyone still having trouble finding this information, see page 20 at

http://www.nicor.com/nsr/natgasref1.pdf
 
 

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