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Home Brew Forums > Home Brewing Beer > DIY Projects > Brew Stands > Questions About Converting Propane to Natural Gas
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Old 02-04-2013, 08:50 PM   #1
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Default Questions About Converting Propane to Natural Gas

I have a plumber coming to split and run my NG line directly to my brewing area in my garage (well ventilated). I currently have a single-tier with two 10" banjos and a 4" hurricane. I undersand I'll need to bore out each orifice, and my first question is: which bit do I need to use to do this? Would it be easier just to by new NG orfices? If so, where can I get them?

Finally, how will my current rig work on NG? I'm assuming just fine, I just want to know if anyone else has done a similar conversion.

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Old 02-04-2013, 09:03 PM   #2
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Old 02-05-2013, 12:30 AM   #3
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Williams Brewing also sells the NG orifices...

http://www.williamsbrewing.com/HURRI...-P2214C87.aspx

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Old 02-05-2013, 01:00 AM   #4
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Along with a change in orifice size you will probably need to adjust your air flow at the burner and if he is installing a regulator have him set it for proper pressure.

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Old 02-05-2013, 01:13 AM   #5
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Originally Posted by stoneyts View Post
Along with a change in orifice size you will probably need to adjust your air flow at the burner and if he is installing a regulator have him set it for proper pressure.
Thanks. What exactly is "proper pressure" anyway?
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Old 02-05-2013, 01:20 AM   #6
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I believe the 10" banjo burners are designed to run on natural gas at 11" WC (water column) pressure, but you should double check on that.

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Old 02-05-2013, 01:30 AM   #7
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I believe the 10" banjo burners are designed to run on natural gas at 11" WC (water column) pressure, but you should double check on that.
Actually, I believe I read that somewhere else too. Good looking out, man. Thanks.
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Old 02-05-2013, 02:35 PM   #8
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So Williams Brewing sells a "low pressure" 10" burner... it looks exactly the same as my "high pressure" 10" banjo (taken of a Bayou KAB4). Is the only difference the orifice? I'm thinking about just buying the NG orifice set from Williams, I just want to make sure they'll work with my burners first. Cheers!

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Old 02-05-2013, 05:27 PM   #9
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Quote:
Originally Posted by Brulosopher View Post
So Williams Brewing sells a "low pressure" 10" burner... it looks exactly the same as my "high pressure" 10" banjo (taken of a Bayou KAB4). Is the only difference the orifice? I'm thinking about just buying the NG orifice set from Williams, I just want to make sure they'll work with my burners first. Cheers!
It is my understanding that the burners they sell as "low pressure" are the same as the BG-14 burners in the KAB4 Bayou Classic. I purchased a KAB4 last summer, as well as one of the Williams NG orifices. I have not used it yet, but if I remember correctly the orifice did screw into the port on the KAB4 just fine. I can double check that fit tonight if you would like.

I believe the main issues are orifice size, air supply, and gas pressure when switching between LP and NG. However, I have only used propane on my KAB4, so I am not exactly an expert on the issue.
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Old 02-05-2013, 07:17 PM   #10
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Those orifices at Williams will work just fine on the "high pressure" banjo burners. Just screw them in and attach everything to the gas line. I had a shutoff valve as a safety measure, and used the needle valves on the Williams orifices to adjust the flame. I used 200 psi air hose from Grainger as a jumper hose so that I could keep a 3/4" line diameter from my 3/4" gas pipe to the brew stand (about 12'). It has worked great for years now, is strong as can be (you can stand on it and it won't compress), and is much less expensive than the smaller diameter gas hose. Light the burners with the vent closed, then open it all the way up (at least in my experience).

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