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Other Technical Questions Discussion of other technical topics. Please see the sticky post at the top of the thread listing for specific rules. The rules for this forum are more restrictive than they have been in the past. Topics will expire automatically in 60 days.

       
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Old 08-31-2008, 10:17 AM   #1 (permalink)
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Natural Gas Firepit???

My wife wants me to build her a natural gas firepit (brick / pavers in a circle about 2' high, with a natural gas burner in the center). I've looked at several burners online, and they all appear to just be a stainless steel or black pipe ring or square with a 1/2" NPT fitting and a bunch of holes drilled in it...nothing too fancy...so I'm contemplating building my own. None even appear to have venturis or anything on them. Given that natural gas is at such low pressure, I can't imagine that they'd do so well without a venturi, but that appears to be the way they're set up.

Anyone have any sage advice on building my own? I'm contemplating just getting some black pipe and making a double square, welding the joints, drilling a bunch of 1/16 holes in the top, and calling it a burner. Any thoughts? How 'bout a homemade venturi? All of the posts I see online about venturis are for propane (much higher pressure) and use really, really small nozzles (e.g. Mig welder tips). Is a venturi even needed? Ideally, we'd have maybe 12-18" tall flames...
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Old 09-01-2008, 02:35 PM   #2 (permalink)
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The ones thar are for sale are for lokos only. They do not need to build heat so things like venturi's are not needed.

I guess you could build your own. Is it going to be that much cheaper? Locally here I see a whole patio set with a LP burner in the center table going for $300.
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Old 09-01-2008, 05:16 PM   #3 (permalink)
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All that sets of gas logs have are perforated pipes running under the grate. You could use a similar pipe setup as a log lighter and then burn wood for fuel. Burning natural gas for any length of time can get quite expensive.
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Old 09-02-2008, 12:08 PM   #4 (permalink)
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This is going to be outside, and pretty much for looks only.
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