How to Flare Copper Pipe for a Gas Stove

Slide the pipe’s flare nut onto the pipe with the nut’s threads facing the tip of the pipe. A flare nut is the nut that attaches the pipe to the flare union. The flare union is the metal fitting that features threads on both ends and connects the stove’s gas pipe to the copper pipe.

Insert the tip of the pipe into the appropriate sizing hole within the base of a two-piece flaring tool so that the end of the pipe is flush with the flat surface of the base of the tool. Note that a fractional measurement is stamped into the tool, just above each sizing hole. This measurement corresponds to the outside diameter of the pipe. Therefore, insert the pipe into the sizing hole that matches the outside diameter of the pipe.

Tighten the clamp on the flaring tool to hold the pipe securely within the base of the tool. Ensure that the end of the pipe remains flush with the flat surface of the base of the tool.

Slide the base of the flaring tool through the tool’s yoke. The yoke is the portion of the tool that features a large threaded rod through its center. Note that the bottom of the yoke features a pair of hooked tips. These tips are designed to support the bottom of the base. Position the base within the yoke so that the pointed tip of the yoke’s threaded rod rests just above the center of the pipe.

Tighten the yoke’s handle to flare the tip of the copper pipe by turning the handle in a clockwise direction. The flare is complete when you are no longer able to tighten the yoke’s handle.

Loosen the yoke’s handle and slide the base of the flaring tool away from the yoke. Loosen the clamp on the flaring tool to release the flared pipe.