A standard single flare on copper tubing is made at a __________ angle.

A standard single flare on copper tubing is made at a 45-degree angle. This angle is typically chosen because it provides an optimal balance between ease of making the flare and the effectiveness of the seal it creates when joined with another fitting.

Using a 45-degree angle allows for a sufficient surface area to create a good seal while also ensuring that the flare itself is strong enough to withstand the pressure of the system it is part of. The 45-degree flare is commonly used in plumbing and HVAC applications because it facilitates a tight, leak-free joint without compromising the integrity of the tubing.

When fabricating a flare, achieving the correct angle is essential to ensure that the tubing fits snugly against the mating surface, promoting a reliable connection during operation. This aspect is critical for maintaining system performance and safety.