What is the required nominal wall thickness for copper tubing not larger than 1/4" od?

The required nominal wall thickness for copper tubing not larger than 1/4" OD is based on standards set by organizations such as the American Society for Testing and Materials (ASTM) and the Copper Development Association (CDA). For tubing of this size, a nominal wall thickness of 0.03 inches is standard practice. This thickness ensures proper durability and pressure handling for the tubing in refrigeration applications.

Copper tubing is widely used in HVAC and refrigeration systems due to its excellent thermal conductivity and resistance to corrosion. The thickness of the wall is crucial for maintaining the integrity of the tubing under various thermal and pressure conditions. A wall thickness of 0.03 inches provides a balance between flexibility, ease of installation, and strength, making it suitable for many HVAC applications.

Selecting a wall thickness that is greater or lesser than this standard could lead to issues, such as inadequate performance or premature failure of the tubing. Therefore, it's important to adhere to these standards to ensure efficiency and safety in refrigeration systems.