Engine: Refrigeration AC

1. A Hard drawn copper tubing is not easily flared, bent, or swaged, so brazed fittings are commonly used.
2. B Hard drawn copper tubing is easily swaged, so reducing fittings are rarely used in changing line size.
3. C Hard drawn copper tubing is easily bent, so elbow fittings are rarely used in changing direction.
4. D Hard drawn copper tubing is easily flared, so flare fittings are commonly used.

Tip: press A-D to answer