There are many regulations when it comes to gas appliances. These regulations are in place to help the people of the world. Now many people do not believe this, they instead believe that it is some kind of money making scheme. In all truth there is nothing that can be gained by those in power when putting regulations on gas appliances and their fittings. This is nothing more than a safety precaution that every one who is involved with the installation should be aware of. More over, it is for your own good that these kinds of things take place to make sure that you and the family or employees that are inside the building are safe and secure.
First off you should understand that gas appliance fittings are highly regulated. The reason behind this is the fact that there is certain things added to gas that make it corrosive. In other words it can start to eat through certain types of metal and will eventually cause a leak. So you see, there is no reason why you should be using anything but the regulated gas appliance fittings. If for no other reason than to make sure that you do not have any kind of dangerous gas leaks some where down the road. The biggest mistake that you could make would be too have the fittings made of plastic, which did happen at one time.
The main types of metals that are used in gas appliances are brass and steel. This is the most common of all the kinds of metal that can be used to make the gas appliance regulated fittings. The brass is by far the most expensive of all the fittings but it is the most secure that you can find. Brass will swell and contract to adapt to the surrounding temperatures and that makes it the best choice. However, there is nothing wrong with steel even though it will rust and can at one point or anther spring a leak.
There are companies that are experimenting with hardened aluminum fittings today. This is something that comes with the adding of a copper alloy to the aluminum to make sure that it is the most dense that it can be. The addition of the copper alloy gives the metal a dense strength that is working to improve its performance. So far the tests have been very positive. The main focus is too have a metal alloy that will perform just as well as brass but cost much less.