How Do You Use Compression Fittings For Gas?
Compression fittings connect copper tubing to various appliances and valves, but mostly for water. You can use compression fittings for gas for a hobby or project, but only for a low-pressure, non-flammable gas such as nitrogen. OSHA does not sanction the use of compression fittings for flammable gasses such as LP (liquefied petroleum) or natural gas. For these gasses OSHA requires the use of screwed, flanged, welded, soldered or brazed pipe joints. Do not use a compression fitting to hook up a gas appliance. Position the tubing to fit into the compression fitting. Be careful not to bend or dent the tubing close to the fitting where the ferrule must slip over it. Clean any corrosion or dirt off of the tubing with the emery cloth. Then place the nut over the tubing followed by the ferrule. Coat the ferrule and the pipe threads with pipe joint compound. Push the tubing into the fitting all the way until it seats against the end of the fitting. Screw the nut onto the fitting while holding
