- 4 Posts. Joined 12/2009
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So, did just running a natural gas hose into the propane connection on the Landmann was all it took?
How is this working?
Do you think that drilling the orifice would make it work better? Does it reach a good high temp? How high? How does it work on low, and how low does it smoke reliably?
Anyone else have any recommendations about this?
Thanks in advance
Don't know if you are still working on this.... I changed a propane grill from propane to ng by... going to bbq Galore.. they had blank jets and charts that the guy used to tell me the exact size for the ng orfice.. then I went to Ace Hardware to get the tiny drill bits.. the whole process took a couple of hours including driving around to get the jets and bits...it worked fine and used it for over 4 years... By just hooking up the line to ng only and not changing the jet or at least the orfice size, it will not put out enough BTU's
Most natural gas equipment is set from the factory to run at 3.5" WC That' the common pressure after the meter and regulator "most" gas companies use....NG orfice sizes are usually a LOT bigger because 1. Propane pressure is 11" WC and 2. Propane burns hotter than NG. That being said, if it works, it works. It might not work as well in cold weather but you can always drill it a bit bigger. One thing about going bigger is if you go too big its harder to shrink the hole. lol.... If it seems to be between two drill sizes it's probably a number drill size. BTW I did finally find my drill charts.
I converted a 3 burner gas grill once and a 3/8 copper line wouldn't supply enough NG to run it. Had to run a 1/2" black iron pipe.
Looking to convert my 44" Smoke Hollow to NG and have a question:
Why can't I run NG using the propane orifices? Will that not reduce the BTUs and help with the bottom-end temps? Or will the gas flow be so low it won't light/stay lit?
A couple of things to think about. The NG industry is heavily regulated, and there can be safety consequences when doing home owner modifications. On a side note, I have been out of the business for a few years, and these regulations can change on an almost daily basis.
What regulations is your local area following, National Fuel Gas Codes, or International Fuel Gas Codes? What does your smoker manufacturer say about making this conversion, did you ask?
The last time I dealt with this, the code said that you could make a conversion with the manufacturer's permission and guidelines. Every manufacturer of "grills" that we contacted told us that there were no authorized conversion allowed.
When hooking up to the gas line, you will probably be required to hook up using a flexible hose, and quick connect fitting, along with a shut off valve. The hose cannot be one of those stainless steel ones for stoves and dryers.
Now, having gone through that, people make these conversions every day, and few have any problems.
I recommend you call Smoke Hollow and get the correct orifice..... Below is an orifice chart for propane and natural gas.....
Called Smoke Hollow which said their smokers haven't been tested for NG so they don't sell NG orifices. The lady suggested I contact a plumber to make the conversion for me. So now I've been to two grill stores, the local gas supplier, a plumbing supply house and several hardware stores. When I explain what I'm looking for, they all act as if I've asked for kiddie porn or weapons grade plutonium. They literally won't touch the orifices I have to tell me what thread size they are.
Anyway, anyone have a current source for generic, blank orifices I can drill myself? I don't want to start monkeying with my smoker until I know I have a Plan B and can at least go back to square one if I mess up.
Question: when you guys speak of numbered drill bits, are those wire sizes? Thousands of an inch? Being a carpenter not a machinist I'm not familiar with stuff smaller that a 16th.
2Cub, Open the link I posted..... On the left is the drill size.... next column is the orifice size in thousand's of an inch.... next columns are BTU's at given pressures for Natural gas and finally propane..... Check the orifice size in your smoker.... knowing the pressure of the regulator, you can instantly convert your orifice size to what is needed to operate on natural gas..... for the cost of a plumber, you can purchase a drill bit set and have spare change.... You will need a regulator that can be adjusted down around 4" water or so from the 7-11" propane needs.... If you are happy with the temp range of your smoker, copy the nat. gas numbers given...... If your smoker runs too hot, drill the hole smaller than recommended for the same BTU's...... Use the drill set to measure your existing orifice for starters.... go up in sizes slowly.... remember to adjust the air for a clean blue flame while testing and be sure to clean the burner tube to rid it of any spiders or web type stuff so you don't have a false test burn......
I'm definitely a newbie among experts here on this forum. I'm converting a Smoke Hollow 4 in 1 to NG and want to make sure I've got everything correct from y'alls discussion.
From what I've read, these should be the steps to convert and connect my grill to the quick connect NG line on the porch. Please correct or confirm my checklist:
1) buy a male quick connect piece
2) attach quick connect to black rubber hose
3) put a shut off valve in the hose line
4) attach the hose to the gas supply on the grill
5) check my water column measurement coming from my NG meter
6) use chart provided by DaveOmak to find the orifice size which gets my burners just under the BTU rating.
7) buy correct size drill bit and drill out orifices.
8) double check connections and get grilling
Does that look like it'll get it done? Any other tips? Like using Teflon tape, or anything else. Thanks in advance