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Top best answers to the question «Can i use copper tubing for natural gas»
A. Copper pipe, or tubing is NEVER ALLOWED BY CODE IN THE US FOR NATURAL GAS DISTRIBUTION! ... Bottom line is copper is NEVER ALLOWED BY CODE IN THE US FOR NATURAL GAS DISTRIBUTION! It is very common to see copper tubing used in rural areas for propane gas distribution.
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In answer to your question: Should I use copper tubing for natural gas? I'm surprised that no one has advised you that over a short period of time, natural gas causes a build up inside the copper (Copper Sulfate) and will, at the least vibration flake off and cause all gas valves to fail.
A: Generally speaking, local building codes determine the type of pipe in which both natural gas and bottled (LP) gas can run. It's possible the homes you examined were in an area where copper pipe...
"Copper and copper alloy tube (except tin-lined copper tube) should not be used if the gas contains more than an average of 0.3 grains of hydrogen sulfide per 100 standard cubic feet (scf) of gas (0.7 mg/100 L)." (copper.org) For the most part the chemical added to make the gas smell is what corrodes the copper and not the natural gas itself.
Recognizing this fact, and the fact that the use of copper tube for the natural gas distribution system allowed gas utilities and building owners to provide natural gas as a cost effective alternate energy source to electric, has led many areas of the country that previously banned the use of copper in this use to reevaluate their position.
Type K pipe is not approved for use in natural gas activities, because the gas substratum will affect the joints of the pipes. The copper pipe of Form K contains the thickest wall of all traditional types. It is used for the defense against flames, coal, etc.
Copper and copper alloy tube (except tin-lined copper tube) should not be used if the gas contains more than an average of 0.3 grains of hydrogen sulfide per 100 standard cubic feet (scf) of gas (0.7 mg/100 L).
ACR Copper Tubing –Just Say “L”! The types of copper tubing appropriate for natural gas or propane service has changed. Clause 5.2.4 of the CSA-B149.1 allows types L, K and G tubing only to be used. The Code does not specify ACR tubing for use in natural gas or propane service.
The 2010 edition contains important changes on the Types of copper tube to be used in natural gas systems. The B149 Code Update provides the latest information on Type G/GAS tube. Local authorities should be consulted before specifying or installing any Type of copper tube. The Publications covered above are available in electronic format.
You can’t use copper tubing for natural gas. While coper tubing is fine to use with propane gas distribution, natural gas and copper do not mix together well. The natural gas will slowly erode the copper tubing, causing it to fail and a big gas leak in your home over time.
Copper tubing should only be used for propane (LPG) gas, and NOT natural gas. FLARE or solder fittings only, NO compression (ferrule) fittings. Additionally, what is the difference between L and M copper pipe? When to use Type L and Type M copper pipe sizes But for normal “in the wall” household plumbing, Type M copper pipe is just fine.