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carlyai

Swapping High and Low Pressure Gas Regulators

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I have gas smoker and the 2 burners don't seem to be getting enough gas (unit doesn't get hot enough, but before it did). It has a Low Pressure (LP) regulator model 339.

 

I have a gas BBQ with 4 burners, it works well and has a High Pressure (HP) regulator model 108.

 

They can be both supplied from the same gas bottle.

 

I can't see any blockages with the gas to the smoker, therefore presume it could be the LP regulator.

 

I want to replace the LP smoker regulator with the HP BBQ regulator to see if this is the problem.

 

I can't see any problems. OK or not?20191020_141202.jpg20191020_141157.jpg20191020_140943.jpg

 

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Sounds strange to me as high pressure regulators are normally only used for commercial type gas burners - my BBQ has always used normal home low pressure.

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42 minutes ago, carlyai said:

I can't see any problems. OK or not?

 

I wouldn't, the pressure difference is just to great (HP is 10-20 times LP).

 

If the smoker has worked with a LP reg before then it should continue working. LP regs are cheap as chips I'd just replace the beastie.

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Also those are the extremely cheap regulators without the safety shutoff. As such I would get at least 1 good low pressure valve. 

 

If that doesn't work then clean the burners. 

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Wire brush the burners and poke a wire or toothpick into every hole.  If they unscrew, give them a bump and see if any crud comes out.

 

BUT, you don't want a smoker to get hot - just smoke.

 

 

Edited by bankruatsteve
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Also those are the extremely cheap regulators without the safety shutoff. As such I would get at least 1 good low pressure valve. 
 
If that doesn't work then clean the burners. 
Burners are good checked them and have flame at each hole.

Those regulators came with the kit. But about 5 years old.

The safety regulators, (click clack weeerrr) think I remember, got a dial on them with ON or an ON timer and small guage?






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Wire brush the burners and poke a wire or toothpick into every hole.  If they unscrew, give them a bump and see if any crud comes out.
 
BUT, you don't want a smoker to get hot - just smoke.
 
 
Yep, checked the burners before...but the flame wasn't hot enough to catch the wood chips on fire.

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14 minutes ago, carlyai said:

Yep, checked the burners before...but the flame wasn't hot enough to catch the wood chips on fire.

That doesn't make sense.  Even a yellow flame is plenty hot enough to start a fire.  Is there something that raise/lower the chip platform?  Again, you don't want the chips to burn, just smoke - smolder is the best term I suppose.

Edited by bankruatsteve

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4 minutes ago, carlyai said:

The safety regulators, (click clack weeerrr) think I remember, got a dial on them with ON or an ON timer and small guage?

Those are the expensive door-to-door salesman type units sold at high price.  The basic safety unit just has a button to stop flow if becomes too much (leak) and have to reset to start again.

image.jpeg.9240297a84ae592e26f3c5c301cfc290.jpeg

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29 minutes ago, carlyai said:

Burners are good checked them and have flame at each hole.

Those regulators came with the kit. But about 5 years old.

The safety regulators, (click clack weeerrr) think I remember, got a dial on them with ON or an ON timer and small guage?
 

 The correct ones are shown under and cost about 300 Baht. The ones you have are probably about ½ or less than that.

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2 hours ago, Crossy said:

If the smoker has worked with a LP reg before then it should continue working.

  • Has the beast actually worked as set up now?
  • Bottle has gas?

Yes and Yes? - replace the LP reg.

 

EDIT Do check the burner jets, they probably unscrew and have an eensy-weensy hole that can coke up, poke it with a fine needle.

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You can always tee in some air pressure with a valve to control the rate to give it more grunt.

But as the others say,try a new regulator 1st.

Is it meant to be LP or Propane.

Edited by farmerjo

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Sounds strange to me as high pressure regulators are normally only used for commercial type gas burners - my BBQ has always used normal home low pressure.
Just remembered and had a look. It has a speed burner on the side. Normal flame for like heating a big pot of soup, but an extra flame (like a turbo flame) for quick heat. That's probably why the HP regulator. I seem to now remember ordering that option.

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That doesn't make sense.  Even a yellow flame is plenty hot enough to start a fire.  Is there something that raise/lower the chip platform?  Again, you don't want the chips to burn, just smoke - smolder is the best term I suppose.
No. The chips are enclosed in a SS box with a mesh top.
I'll have a bit more of a play when I buy the new regulator.
When I first used it (a while ago) it got to brisket recommended cooking temp and smoked. Last time I used it it wouldn't get to temperature and no smoke.
I got sick of moving it all round the yard, as everytime I had a good spot it would get crowded out with pot plants. So this time I checked and there was an understanding that when I wanted to smoke or BBQ, even once every month, just want to do it, not move pot plants, water features, shoes, baskets, fish food etc. So now I'm getting it all set up again. [emoji38] Still have to move the shoes and fish food which seems to position on top of the smoker and resting at the base of the smoker.

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  • Has the beast actually worked as set up now?
  • Bottle has gas?
Yes and Yes? - replace the LP reg.
 
EDIT Do check the burner jets, they probably unscrew and have an eensy-weensy hole that can coke up, poke it with a fine needle.
No it's in my new designated position. Spent some time in the shed.
Full bottle gas. Will do tomorrow.

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