How to Flare a Refrigerator Copper Gas Line

Slide a female connector that matches the refrigerator's male connector over the copper line. Move the female connector back several inches on the copper line to place it out of the way.

Fit the copper line into the flaring tool's line clamp hole that matches the copper line's diameter. Because copper lines are made in standard sizes, a line clamp hole will be the correct size. Make the end of the copper line, or mouth, even with the face of the flaring tool. Clamp the copper line down so that it is snug in the hole.

Place the flaring tool's cone tool against the mouth of the copper line so that the cone tip is just inside the copper line. Some cone tools have an attached handle; if the cone tool you use has a separate handle, then insert it into the top of the cone tool. Twist the cone tool's handle, forcing the cone tip into the copper line. Do not overtwist because doing so will break the soft copper.

Remove the cone tool, and remove the clamp from the copper line. The copper line should have a solid flare. Pull the female connector forward to ensure a good fit between the flare and the inside of the connector.