What is the maximum distance allowed between supports for horizontal 1/2 inch O.D. tubing?

The maximum distance allowed between supports for horizontal 1/2 inch O.D. tubing is 4 feet. This distance is set to ensure that the tubing remains securely in place and is protected from sagging or bending under its weight or the weight of any additional components, such as insulation. Proper support spacing reduces the risk of stress and potential damage to the tubing over time, which is crucial for maintaining efficient and safe HVAC operations.

The choice of 4 feet is based on industry standards and practices related to the installation of piping systems, which take into consideration factors like the material properties of the tubing and the environmental conditions in which the HVAC system operates. Ensuring supports are placed within this specified distance helps maintain the integrity of the entire system.