It’s time to create double-sided flare fittings on your flexible copper tubing. Creating a double-sided flare fitting allows you to adjoin two pieces of copper tubing. Typically, you would create a double-sided flare fitting when wish to create a connection from your main water source—for example, connecting a new toilet. When connecting a double-sided flare tubing you must purchase a flare union. The flare union connects the tubing and creates a water-tight seal.
Flaring tube kit
Sand approximately 3 inches on each end of your copper tubing with your Emory cloth until they resemble a shiny, copper penny. This removes dirt and debris from your copper tubing. Dirt and debris may cause leaks in the flare. This ensures a water-tight seal.
Slip a flaring nut onto the copper tubing before you flare it. Place the end of the tubing against the flaring block. Choose a hole on your flaring block to match the outside diameter of your copper tubing.
Insert your copper tubing into the designated hole on the flaring block. Extend the tubing approximately three-quarters of an inch through the hole on the flaring block.
Tighten both wing nuts on each side of the flaring block until the flaring block secures tightly to the copper tubing.
Slide the compression-coning tool over the top of the flaring block. Center the compression- coning tool directly in front of the copper tubing. This levels the compression-coning tool and copper tubing ensuring a straight and accurate flare.
Tighten the compression-coning tool by turning the vice handle on the tool until the cone meets level and tight against the flaring block.
Loosen the compression-coning tool back to its open position. Loosen the wing nuts located on each side of the flaring block. Remove the copper tubing from the flaring block.
Slide the flaring nut on the copper tubing to the end of the tube. Ensure the flaring flange you made rests tight against the bottom of the flare nut. This ensures a water-tight flare.
Place a flaring nut on the opposite end of the copper tubing and repeat the steps above to complete the second flare.
TIPS: Do not over-tighten the compression-coning tool as this cracks the copper tubing.