PEX sizes one (1) inch and smaller installed horizontally shall be supported at intervals not to exceed how many inches?

For PEX sizes one inch and smaller that are installed horizontally, the requirement for support intervals is critical to ensure the proper function and longevity of the plumbing system. According to the plumbing codes, PEX tubing must be adequately supported to prevent sagging, bending, or other forms of stress that can lead to damage.

The correct support interval for PEX tubing of this size is 32 inches. This standard is established to ensure that the tubing remains stable while accommodating thermal expansion and contraction. If support spacing is too wide, the PEX may experience excessive movement, leading to potential leaks, cracking, or other issues over time.

By adhering to this guideline, plumbers help maintain the integrity of the plumbing system, thus enhancing its reliability and performance. Proper support placement is essential for all installed piping, but especially for flexible materials like PEX, which can be more susceptible to movement.