What percentage of slack should be left in a flexible hose during installation?

Leaving a percentage of slack in a flexible hose during installation is crucial to accommodate movement and thermal expansion, as well as to prevent undue stress on the hose. The correct range of 5% to 8% is generally accepted in the industry because it provides enough flexibility for the hose to handle dynamic movements without risking kinks or tears that can lead to fluid leakage or failure.

This range helps ensure that when the system operates, the hose can freely flex and expand without placing excessive tension on its connections. Proper installation with the right amount of slack not only enhances the lifespan of the hose but also maintains system integrity and reliability.