propane vs natural gas

   / propane vs natural gas #1  

schmism

Super Member
Joined
Jul 25, 2006
Messages
5,132
Location
Peoria IL
Tractor
New holland TC(33)
so you may or may not know... we have (mostly) moved into a single wide used trailer we set on our property in IL.

I THINK the trailer was retrofit for natural gas (black pipe run along the bottom of the trailer (under the belly wrap.. its "exposed")

I think its natural gas because i THINK the furnace says the natural gas orfice is installed...

well after useing a single burner with attached 20lb tank in my kitchen for the past 4 months, (i really dont want to hear about that from the safty police thanks) i FINALLY got around to hooking up a larger 100lb tank to the outside black pipe line. (shut off gas to furnace)

So the question is how does one determine what the proper orfice for the stove to be? And secondly does it really matter?
(well google says yes, but mostly due to waterheaters and such that can catch on fire.... but a stove?!?!?)

My moms kitchen has a Garland profesional stove, she's had it for years, i "learned" to cook on it. ITs a beautiful thing to get like 15,000 btu's out of one burner, but being able to turn it down to a nice simmer.... but i digress.....

our cheezy stove in our STL house has little tinny burners that put out a miserable amount of heat.... (never try to do blackend seared pan fish or some nice prons or sea sclops, you just dont have enough heat)

but the stove at the trailer is GOOD and hot... course it looks like a comercial stove with yellow tips on the flame.... cant get rid of them with the air control "valve"....
(in case your lost, the questions are in bold)
 
   / propane vs natural gas #2  
schmism said:
so you may or may not know... we have (mostly) moved into a single wide used trailer we set on our property in IL.

I THINK the trailer was retrofit for natural gas (black pipe run along the bottom of the trailer (under the belly wrap.. its "exposed")

I think its natural gas because i THINK the furnace says the natural gas orfice is installed...

well after useing a single burner with attached 20lb tank in my kitchen for the past 4 months, (i really dont want to hear about that from the safty police thanks) i FINALLY got around to hooking up a larger 100lb tank to the outside black pipe line. (shut off gas to furnace)

So the question is how does one determine what the proper orfice for the stove to be? And secondly does it really matter?
(well google says yes, but mostly due to waterheaters and such that can catch on fire.... but a stove?!?!?)

My moms kitchen has a Garland profesional stove, she's had it for years, i "learned" to cook on it. ITs a beautiful thing to get like 15,000 btu's out of one burner, but being able to turn it down to a nice simmer.... but i digress.....

our cheezy stove in our STL house has little tinny burners that put out a miserable amount of heat.... (never try to do blackend seared pan fish or some nice prons or sea sclops, you just dont have enough heat)

but the stove at the trailer is GOOD and hot... course it looks like a comercial stove with yellow tips on the flame.... cant get rid of them with the air control "valve"....
(in case your lost, the questions are in bold)

Too much to comprehend but believe me it matters. Natural gas is under low pressure with a larger orifice. Propane is high pressure with a smaller orifice.

If you you were using a natural gas stove with propane supply, you'd know it for sure. Very dangerous. STOP

Somewhere on the appliance it will tell you what it's designed for. STOP and read.
 
   / propane vs natural gas #4  
Sometimes gas appliances can be changed from natural gas to propane and vice versa by changing the burner size. We had this done for our gas dryer when we moved from city to country last fall. Had a pro do it because I'm a bit scared of gas leaks, but it was a simple job and works fine. As noted, propane running through an orifice designed for natural gas will create a huge flame and is dangerous. Natural gas running through a propance orifice will, I think, create a pathetically small flame.
 
   / propane vs natural gas
  • Thread Starter
#5  
BillyP said:
Somewhere on the appliance it will tell you what it's designed for. STOP and read.

Its my undertanding that all appliances that use a "gas" as fuel have a regulator on them.

Most if not all of those regulators have a replaceable/swapable orfice.

As such, while the appliance may say thats its designed for both, they rarely have a way to say "a propane orfice is currently installed"

My furnace has a tag hanging from the regulator that says "natural gas orfice installed" and a little coth bag with a second one.... but AFAIK it was up to the installer to take the time to switch tags when they switch the orfice...

so i guess i could remove it and measure it per sigarms post...
 
   / propane vs natural gas
  • Thread Starter
#6  
Sigarms said:
A useful tool that I've come across

"Product Name:
Adjustable Orifice Reamer"

now thats a nice little tool!
 
   / propane vs natural gas #7  
schmism said:
Its my undertanding that all appliances that use a "gas" as fuel have a regulator on them.

Most if not all of those regulators have a replaceable/swapable orfice.

As such, while the appliance may say thats its designed for both, they rarely have a way to say "a propane orfice is currently installed"

My furnace has a tag hanging from the regulator that says "natural gas orfice installed" and a little coth bag with a second one.... but AFAIK it was up to the installer to take the time to switch tags when they switch the orfice...

so i guess i could remove it and measure it per sigarms post...

I'm gonna let someone else go from here but I'm telling you to get professional help. The regulator is set for what kind of gas you're using. What size orifice is sized for what gas you're using. These two or matched
 
   / propane vs natural gas #8  
We got a new gas stove. We have propane. The stove came set up for Nat Gas with an included kit to convert to propane. The kit included a new orifice for each burner (stove top and oven) and a spacer to put in the regulator change its operating point. Which orifice was bigger I don't know.
 
   / propane vs natural gas #9  
As I have converted many gas ranges & forced air furnaces. let me know what you are wanting to know on this post or pm. If you use that reamer be careful as not to ream too much or you will get a large flame. Most ranges in a mobile home can use propane or N.G. & most come with orifices to change out except the oven burner which will have to be adjusted by turnung it out until you get the proper flame / air mixture. You will have to turn the cap over on the regulator over for N.G. or propane.Yes, orifice size matters. if your range has propane orifices installed, it will not burn . No burn = no or very little flame on N.G..Your mobile home furnace can also be converted to N.G. or propane in about the same manner
 
   / propane vs natural gas #10  
schmism said:
so you may or may not know... we have (mostly) moved into a single wide used trailer we set on our property in IL.

I THINK the trailer was retrofit for natural gas (black pipe run along the bottom of the trailer (under the belly wrap.. its "exposed")

I think its natural gas because i THINK the furnace says the natural gas orfice is installed...


So the question is how does one determine what the proper orfice for the stove to be? And secondly does it really matter?
(well google says yes, but mostly due to waterheaters and such that can catch on fire.... but a stove?!?!?)

Hi schmism,

I have a 1700 sq ft manufactured home, 10 years old, gas range - water heater - and furnace.

All three have labels to the effect "configured for natural gas. The trailer (yes I call the manufactured homes delivered on wheels - trailers).

In any event I was concerned when I saw the labels since the trailer was hooked up to propane so I called in the local friendly HVAC guy. He examined each appliance and pronounced to me that they each had propane orifices.

My piece of mind was purchased for about $50.00 if I remember correctly.

There is no comparing between hands-on, experienced tradesmen with internet gurus and trying to be helpful novices.

Sometimes ya just plain get what ya pay for.

Rose is Rose
 

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