Stovetop burners making yellow flames

Ok, that link shows propane, especially contaminated with high levels of H2S, affects pure copper test strips.

But I haven't found any references to "tinned copper" line designed specifically for propane in that doc, any of my code references, or in copperorg docs.

Personally, I have never seen anyn"tinned copper" line offered for sale or referenced by any propane dealers.

Unless you are referring to some new kind of tinning, the tinning I am familiar with would not tolerate being coiled, bent, flexed into shape as soft copper coils do. The tinning would crack and stress.

True, there are things I don't know and I learn things every day. But a requirement to use special tinned copper line specific to propane? That info and documentation will have to be pretty compelling to convince me ;)

I've worked with copper propane line over 40yrs old. Sure, they can fatigue and even become hardened, but so can water line copper. I'd speculate avg service life over 50yrs- more than sufficient for most rvs, IMHO.

(Not to confuse residential with special design/purpose industrial or laboratory materials)

I jnvite anyone with code and/or industry knowledge about this to chime in.

DiskDoctr wrote:

KCFDCapt wrote:
I see your lines are copper. Did you specify copper pipes that are approved for propane? Propane will corrode pure copper and the pipes must be tinned inside to be used with propane. It may be some of the corrosion has come loose and is plugging the flow of gas.

I've never heard of this. Can you cite a source?

http://www.propanecouncil.org/uploadedFiles/REP_10014%20Interfering%20Factors%20Copper%20Strip%20Test.pdf

I refilled the tank yesterday. After a years use it only took 5.5 gallons. I only use it for cooking on the stovetop. I mainly cook partially prepared meals such as canned chili doctored up with spices, my famous Ramon noodle/coconut milk/and tuna "Thai surprise", stuff like that, easy and quick to prepare, doesn't use much fuel. As for my copper lines, they're original equipment. I replaced the cast iron lines because of corrosion (my RV spent about 16 years in New York state).
Steve

Hardware stores sell pipe specifically labeled for use in gas plumbing and also special Teflon tape.

I'd fill the tank first. Gauges on propane tanks are ALWAYS innaccutate. If you
replaced pipes with regular, untreated, rust may be the culprit.

if you've been on same tank for a year, my money is almost empty.

KCFDCapt wrote:
I see your lines are copper. Did you specify copper pipes that are approved for propane? Propane will corrode pure copper and the pipes must be tinned inside to be used with propane. It may be some of the corrosion has come loose and is plugging the flow of gas.

I've never heard of this. Can you cite a source?

I see your lines are copper. Did you specify copper pipes that are approved for propane? Propane will corrode pure copper and the pipes must be tinned inside to be used with propane. It may be some of the corrosion has come loose and is plugging the flow of gas.

If the propane regulator is over 7 years old, replace it-- less expensive to replace than to test if you have to pay labor. $25.

Make SURE that you replace with the correct one-- the vent (quarter-sized screened area) MUST, repeat MUST face DOWN. So, if mounted horizontally, the vent will be perpendicular to the long axis of the regulator. If mounted vertically, it will be on the long axis of the regulator. Same price, and likely the part number will be only one digit different.

If that doesn't do it, THEN start troubleshooting.

There may have been some contamination gotten on the burner.. But other thing that causes yellow tips is the gas/air mix.. Things that affect that are.....

Partially obstructed oriface (The gas jet on the back of the valve)

Regulator issues

Something in teh large tube between the valve and the burner

Something blocking part of the "Window" in said tube near the valve.

It could be as simple as routine cleaning UNDER the lid.

There is a good RV shop in Sequim. Eric's RV. he may have both regulators in stock. That is if your arte in Port Angeles, WA
Eric's

I would just go get a new horizontal regulator.
Install it and see what happens.
Next thing to do would be located your stove top make and model. See if it has a small regulator under the top. They are hard to find. Laurelhurst distributors in Portland has them depending on make and model.
Laurelhurst