What is the purpose of the flaring tool in flare fitting installation?

What is the purpose of the flaring tool in flare fitting installation?

• A. Cut the tubing end square
• B. Flare the end with the flaring tool
• C. Thread the flare onto the fitting
• D. Secure the flare with two adjustable wrenches

Answer: (B)

The flaring tool’s job is to shape the end of the tubing into the proper flare profile so the flare nut can seal against the fitting and create a leak-tight joint. By forming the tube end at the correct angle (typically a 45-degree single flare) and size, the nut clamp compresses the flare onto the fitting seat when tightened. Cutting the tube square, threading the flare onto the fitting, or forcing the flare with wrenches are separate steps or actions outside what the flaring tool does; the tool’s purpose is specifically to form that precise flare shape for a reliable seal.

The flaring tool’s job is to shape the end of the tubing into the proper flare profile so the flare nut can seal against the fitting and create a leak-tight joint. By forming the tube end at the correct angle (typically a 45-degree single flare) and size, the nut clamp compresses the flare onto the fitting seat when tightened. Cutting the tube square, threading the flare onto the fitting, or forcing the flare with wrenches are separate steps or actions outside what the flaring tool does; the tool’s purpose is specifically to form that precise flare shape for a reliable seal.