Video answer: How to flare copper tubing for gas, danger
Top best answers to the question «Can i use copper for a natural gas line»
- 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.
Video answer: Copper natural gas systems – you'll like the bottom line
10 other answers
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.
I'm a heating engineer here in the uk and copper pipe is approved and widely used for conveying natural gas, propane and butane. Providing the instalation is installed and sized correctly you should not have any problems. However Natural gas contains some small traces of sulfur.
Copper pipes are commonly used for a gas line for water supply lines in the manufacturing industry and for refrigerant lines in HVAC (heating, ventilation, cooling and air conditioning) systems. Copper tubing may be rendered as soft or strong copper which has outstanding corrosion resistance which stable connections.
"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.
It's possible the homes you examined were in an area where copper pipe was allowed to serve as a fuel gas line - in some areas, gas is even allowed to run in certain types of plastic pipe.
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.
I believe in my area, copper is no longer permitted for gas lines. You don't have to swap it out, but, cannot reuse it or install it new. I'd go black pipe as you can, then, consider using an approved flex line. Keep in mind that flex lines may be limited in length.
Only have steel installed. There isn't any place in this country where copper is legal when used for natural gas indoors. Outdoors, only when installed in gas lights up the center support tube and patio portable radiant umbrella designed heaters. The reason copper isn't legal, is all natural gas contains some small amounts of sulfur.
So , legislators , being technically ignorant ,often outlaw copper for gas lines on the basis of what their grandfathers told them. Bottom line , copper is safe but often against the law. Copper is not subject to stress corrosion cracking in H2S. Ammonia ( in many house hold cleaners) will attack copper and brass.
Steel, copper, brass: The most common gas piping is black steel. Galvanized steel, copper, brass or CSST (Corrugated Stainless Steel Tubing) also can be used in some areas, but some utilities specifically prohibit the use of copper. In other areas, the use of copper is widespread. You should know what is acceptable in your area.