A copper pipe flaring tool is used to create a flared end on a piece of copper tubing, typically for high-pressure applications like refrigeration, air conditioning, or plumbing systems. The flare allows the pipe to securely connect to a fitting using a threaded connection.
How a Flaring Tool Works – Step-by-Step:
- Cut the Pipe:
- Use a pipe cutter to cut the copper pipe to the desired length.
- Make sure the cut is clean and square.
- Ream (Deburr) the Pipe:
- Remove any burrs inside and outside the cut edge with a deburring tool. This ensures a smooth flare and proper sealing.
- Insert Pipe into Flaring Bar:
- Place the pipe through the correct-sized hole in the flaring bar (clamp) so that a small amount (typically the height of the flaring cone) sticks out.
- The flaring bar has holes of various sizes for different pipe diameters.
- Clamp the bar tightly to hold the pipe in place.
- Align the Flare Height:
- A good rule is to have the pipe stick out about the same height as the flaring cone’s radius or use the gauge provided.
- Attach the Yoke and Cone:
- The flaring yoke is placed over the bar, with a cone or pointed mandrel aligned with the pipe opening.
- Tighten the screw on the yoke so the cone presses into the end of the pipe.
- Form the Flare:
- As you tighten the yoke handle, the cone is driven into the pipe end, forcing it to expand and form a 45-degree flare.
- This flare will match the angle of a standard flare fitting.
- Release and Inspect:
- Loosen the yoke and bar, remove the pipe, and inspect the flare.
- It should be smooth, even, and not cracked or overly thin.
Types of Flares:
- Standard 45° flare – Common in plumbing and HVAC.
- Double flare – Used in automotive brake lines; involves a two-step flaring process for added strength.
Tips:
- Always use soft (annealed) copper tubing for flaring.
- Apply a small amount of lubricant to the cone for a smoother flare.
- Ensure the flare is not too thin or cracked — this could lead to leaks.