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Old 03-17-2013, 04:28 PM   #1
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Default Burner Issues

I posted a thread similair to this a couple months back in the DIY section but didnt get much feed back. I'm still having issues with this so I wanted to see if anybody has any more thoughts.

My all grain stand uses 3 10" Banjo Low Pressure burners purchased from Brewers Hardware. I also have 12" heat shields, 3 propane orifices, and an 11" WC propane regulator. You can see everything on this page: Brewers_Hardware

No matter what I do I can not get a good flame off of this burner. It starts off nice and blue but after about 15 minutes or so, the flame turns bright orange, licks up the sides of my pot, and puts black soot on everything. As my palate for off flavors improves I'm starting to notice what I think to be DMS. My boils have always been more of a simmer (11 gallon batches).

I have the vent on the burner open as wide as it can go. I've tried lowering the burner, raising the burner, less propane, more propane, everything I can think of yet nothing gets me that nice blue, high intensity flame I am looking for.

I never run more than 2 burners at a time. But even with 1 burner running I cant get a nice flame.

I am looking for any and all suggestions, stories, similarites, that could help me fix this.

Thanks for any and all input!

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Old 03-17-2013, 04:41 PM   #2
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Interesting that it starts out good and then goes bad.


Have you tried another regulator? Tried another tank?

Can you run two burners at once? If so, do they both go bad at the same time?

What happens if you wait to fire a second burner after the first is bad?


Could your heat shielding be overheating the valve/orifice end of things?

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Old 03-17-2013, 04:45 PM   #3
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Originally Posted by reynolds5520 View Post
Interesting that it starts out good and then goes bad.

Have you tried another regulator? Tried another tank?

Can you run two burners at once? If so, do they both go bad at the same time?

What happens if you wait to fire a second burner after the first is bad?

Could your heat shielding be overheating the valve/orifice end of things?
Haven't tried another regulator. I was thinking if getting an adjustable one but everything I'm reading says the orange flame is indicative of too much fuel. Considering I'm using a low pressure regulator my thoughts were that anything higher would cause an even bigger problem.

I have tried multiple tanks.

I can run 2 at once but have never really done it for a lengthy time period. I could try and see what happens.

The orifice is outside of the heat shield a good bit so I don't think it would be damaging the orifice.
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Old 03-17-2013, 05:00 PM   #4
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Haven't tried another regulator. I was thinking if getting an adjustable one but everything I'm reading says the orange flame is indicative of too much fuel. Considering I'm using a low pressure regulator my thoughts were that anything higher would cause an even bigger problem.
Trying another one or switching to an adjustable wouldn't be to get more fuel, but rather to eliminate the current one as a source of the problem. It may be allowing the pressure to creep up.


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I have tried multiple tanks.
OK, rules that out.


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Originally Posted by mrrshotshot View Post
I can run 2 at once but have never really done it for a lengthy time period. I could try and see what happens.
If both start out good, and then go bad at the same time, that would suggest a regulator issue since it is common to both.


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The orifice is outside of the heat shield a good bit so I don't think it would be damaging the orifice.
I wasn't thinking in terms of damage, but rather of heat effecting the gas through the orifice. Hot gas vs cool gas into the burner.

What about hot exhaust into the air intake? Any mixing going on there?
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Old 03-17-2013, 05:03 PM   #5
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If both start out good, and then go bad at the same time, that would suggest a regulator issue since it is common to both.

If you wait for one to go bad, and then the other starts good, that would suggest a heat related issue.
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Old 03-17-2013, 05:10 PM   #6
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Here's a link to the other thread. It has a few pictures of what my burner setup looks like: http://www.homebrewtalk.com/f51/need-more-air-my-burner-372474/

As you can see, the shields have a 2 inch flap to allow exhaust gasses to escape. The escape flap is on the other side of the gas in so I don't think I'm getting exhaust into the burner.

I'll try the burner experiment you suggested to see if the regulator could possibly be the culprit.

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Old 03-17-2013, 05:14 PM   #7
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The old thread states that the other burners are fine but that is no longer the case. They too become yellow over time.

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Old 03-17-2013, 06:39 PM   #8
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And if someone could explain tis to me that'd be great: How come I have seen this burner advertised as both low and high pressure? Are there 2 different types of 10" Banjo burners? For example, midewest supplies suggests THIS 30 PSI regulator for the 10" Banjo, yet brewers hardware suggests THIS 11" WC regulator (0.4 PSI) for the 10" Banjo burner. Is there something I'm missing?

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Old 03-17-2013, 06:58 PM   #9
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The same burner can be used with high or low pressure. When using it with low pressure, you need the correct orifice that has a larger hole. The orifice also changes with LP vs natural gas.

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Old 03-17-2013, 07:03 PM   #10
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Just looked at your pictures, I remember the previous thread now.



Next question, does this happen without a kettle over the burner? Or only with a kettle in place?

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