What is the maximum distance allowed from the end of a 1 1/2 inch line to the last hanger?

The maximum distance allowed from the end of a 1 1/2 inch line to the last hanger is 48 inches. This specification is crucial to ensure proper support and prevent any excessive sagging or bending of the pipe, which could lead to mechanical stress and potential failure.

In sprinkler fitting, maintaining the integrity of the piping system is essential for safe operation and reliability. Proper spacing of hangers supports the weight of the piping system, especially under conditions such as pressure tests or when the system is filled with water. The 48-inch guideline is provided to comply with industry standards and ensure that there is no undue strain on the connections, joints, or the overall structure of the system. By adhering to this maximum spacing, the installation will remain robust and functional over time.