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Old 03-03-2012, 04:49 AM   #21
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I found the orifice that you need for the BG12

http://www.bigway.com/CARTgallery193.htm

You can use the 48-240 or 48-290

That should set you up to get 50k btu at 7" WC on the BG12

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Old 03-03-2012, 05:00 PM   #22
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Quote:
Originally Posted by crazyirishman34 View Post
Needle valves are for HP you should just use the valve on the orifice that you go from Brewers. You need more volume then the needle valve can provide.

With the orifice you can drill them out to the correct size. If you know a plumber or a HVAC person they should have a set of thumb drills and a sizing chart. They just need to match the size of the orifice to the pressure and output btu.

Also two things that you need to keep in mind about the Honeywell valve you speck is that it also has a reg in it. They come from the factory set at 3.5" WC. I would recommend that you you adjust it so you are seeing 7" WC after the valve. Did the orifice have any info on it or included with it on or in the package? If it lists a recommended WC go with that. The second thing you need to remember about the valve is that it will come set-up from the factory for Natural gas you need to install the LP spring and cap.

Thanks for the info.

I already installed the LP spring and cap on the honeywell valves. I have yet to try them. What I did try was the non controlled boil kettle burner. This is where I have the low and then no flame. I don't have the right set of fittings on hand to take the needle valve out of the plumbing. Perhaps I'll get an adapter and see what happens. For the time being, if I open the needle valve all the way, will it provide enough flow?
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Old 03-04-2012, 12:33 AM   #23
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Nope not at all. You need to get rid of it all together. Ideally you would run 1/2" black pipe as far as you can then transition to the CST for as short a run as possible.

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Old 03-04-2012, 04:15 AM   #24
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OK - so I tried removing the needle valve and it didn't make a difference. Then I deciced that perhaps I should try a different regulator. So I went to one home depot and they were out of them. I then tried a different home depot - they were out too! So I went to osh and bought one - both of the big burners work but the BG 12 does not. I need to order the special orifice mentioned earlier and give it a whirl. I am considering just getting another big burner for the mlt - not necessary but not a whole lot more money either.

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Old 03-04-2012, 05:51 AM   #25
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It's pretty easy to just drill out the high pressure orifice if you have a set of wire size bits. To really get it matched well for your system, you'll want to start small and sneak your way up to the final size. Start with a 1/16" or size 52, and see how it performs. Slowly increase the size until the flames have slight yellow tips.

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Old 03-04-2012, 04:04 PM   #26
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I was thinking that if you used Teflon tape to put your piping together. That could be the issue. You shouldn't use Teflon tape for gas pipe you should use pipe dope. I use the yellow #5 for all my threads when I do black pipe.

Also if you can get your hands on a manometer you can do a static test. You can find a spot that you can attach the manometer. Take a measurement with the burner off. Then fire the burner take a reading with the burner running. Your readings should be pretty close together if the reg is keeping up. If it dips too much you might have a bit of dirt or tape in the reg.

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Old 03-04-2012, 05:04 PM   #27
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I"m using the yellow teflon tape for gas on all the black pipe and brass fittings. I want to do a performance test and see how long it takes to heat up plain water. The big burners have a strong flame now with yellow tips (I adjusted the air mixture) but they seem pretty low.

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Old 03-06-2012, 02:15 AM   #28
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I just got everything together. I heated up 11.25 gallons of water from 65 to boiling in 80 minutes. It seems to me it should do this faster. I have a nice blue flame with yellow tips that are barely there (99% blue flame).

Is this what other people experience with the larger banjo burners and low pressure propane?

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Old 03-06-2012, 12:48 PM   #29
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I sounds like you are getting the correct mixture but not enough fuel. Did you check the pressure? Also is the shutter fully open?

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Old 03-06-2012, 03:23 PM   #30
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I don't have a way to check the pressure (unless there is some trick you can share). The shutter is fully open. How long should it take to bring 11ish gallons of water from 65ish to boil?

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