Convert grill from natural gas to LP gas

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Old 01-06-21, 01:06 PM
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Convert grill from natural gas to LP gas

I have a Master Forge (bg179a along with a bg179b and bg179c all matching units) The grill (bg179a) was set up to use natural gas. I have moved and only have propane (LP gas) available. I would like to convert the grill to use propane. The manual discusses how to go from LP to natural gas, but not the reverse. Also, finding the conversion kit is proving difficult. I have emailed the Master Forge web site and have not received a response. I also talked with BBQguys site and while they have a number of conversion kits, Master Forge is not one of them. They indicated that each manufacturer had unique kits for their units. I like this grill and would like to keep it. It will be pretty expensive to replace it just to burn LP. Can you suggest another source for the conversion kit or a kit that will work fine on this unit? Also, can I just get burner tubes with orifices for LP that will be replacements for this grill? Could I then just add

a hose and regulator and make it work? Other options or thoughts?
 
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Old 01-06-21, 03:12 PM
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I'm pretty sure you will need new orifices in addition to a new regulator or convert the regulator you have if it's that type.
 
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Old 01-06-21, 08:37 PM
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That unit comes built for LP. So someone converted it to natural gas and lost all the parts.
Master Forge customer service 1-800-963-0211

(6) 1.45mm orifices (nat gas) - need smaller LP orifices. +/- .95mm
- remove (5) (nat gas) conversion screws
- adjust (5) air shutters - should be set to 1/3 open for LP grills, 2/3 open for natural gas grills.

Check for convertible regulator. Conversion instructions don't mention replacing or adjusting it.
There should be a part number on it that can be checked for conversion. If there is no regulator... one will need to be added.

Master Forge BG179A manual (pdf)
Additional info. Propane to nat gas (pdf)

 
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Old 01-07-21, 08:06 AM
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Thank you. Yes, the unit was converted to NG I think at Lowes, but I am not sure. All of the LP tank brackets are still in the units. I will call customer service and see if I can get the parts and an "orifice removal tool" Do I need a special tool for this or can something else work.
 
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Old 01-07-21, 09:16 AM
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I just talked with customer service and although it was very difficult to understand them, they said they do not have a kit, nor the orifices for LP gas. I doubt that to be true, but I have no way of checking. Any suggestions on where I might find the orifices? I think that is the only actual part change other than a regulator for propane or a switch on the existing regulator. Can I just shop for any 0.95mm orifice?
 
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Old 01-07-21, 11:41 AM
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What customer service did you contact? I'm sure Lowe's wasn't much help but the manufacturer should be able to provide what you need.
 
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Old 01-07-21, 12:32 PM
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I called the number above (1-800-963-0211) and it answered as Master Forge customer service. However, the representative was certainly of Asian decent and their english was very difficult to understand. She put me on hold twice to look up something and both times came to say we don't carry the parts you want. First I asked for the kit to go from natural gas to propane and then asked only for a set of orifices for propane fuel. Also, in one of my searches regarding Master Forge there was a comment the it had been acquired by a Korean company.
 
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Old 01-07-21, 01:05 PM
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Unfortunately it looks like Master Forge is a Lowes private brand which they import. That doesn't bode well for support or getting parts. Since those grills originally shipped LP they may have never had a LP kit, only a natural gas conversion.

Luckily grills are really simple. PJmax has already provided most of the information you need to convert the grill.
 
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Old 01-07-21, 01:28 PM
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Thanks to all as always! Do I need to just pull one of the natural gas orifices and then see if I can find some with the same thread by with 0.95 mm openings?
 
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Old 01-07-21, 03:47 PM
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Don't forget the regulator. Propane and natural gas are at different pressures so it won't work right without the correct regulator or the regulator configured properly.
 
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Old 01-07-21, 04:53 PM
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Do I need to just pull one of the natural gas orifices and then see if I can find some with the same thread by with 0.95 mm openings?
Yes.... there are several on line bbq parts companies that should carry multiple sizes of orifices.
 
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Old 01-07-21, 05:58 PM
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Thanks again!! Care to suggest some of them?
 
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Old 01-10-21, 11:08 AM
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The Master Forge instructions to go from LP to natural gas mention an orifice removal tool. Do you need a special tool to remove and install the orifices? Is there a particular specification for the tool if needed?
 
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Old 01-10-21, 11:50 AM
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Have you looked at your orifices to see what's needed to remove them.
 
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Old 01-10-21, 12:05 PM
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You should be able to remove them with a small socket or wrench. Possibly metric.
 
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Old 01-18-21, 01:51 PM
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I have removed one of the orifices easily. It fit a 7mm socket. The whole piece is about 9mm long (my caliper reads 0.36 in) and the outside of the thread is about 6mm (caliper 0.23 in). My numbered drills go from 1 (caliper 0.22 in) to 60 with 1 being the largest and the orifice is between a 53 and 54 which was for natural gas. I am having difficulty locating an equivalent for LP. Are there some weber ones of this size? Or some other brand?
 
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Old 01-18-21, 02:33 PM
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I don't know the physical sizes of the orifices. You may have to order several to find out a size.

1.45mm orifice = 53-54 drill size
.95mm orifice = 62-63 drill size

Drill chart pdf below.
 
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  #18  
Old 01-18-21, 02:44 PM
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Looking online for "gas grill propane orifices 6mm" I found many options. Some are not "sized" and only have a small pilot hole that needs to be drilled out to the proper size like this one shown below. You'd need a 62 or 63 drill for a .95mm hole (gotta love jumping back and forth between English and metric).

 
 

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