Factor of Safety (FOS)

Proper hose installation is essential for satisfactory performance. If hose length is excessive, the appearance of the installation will be unsatisfactory and unnecessary cost of equipment will be involved. If hose assemblies are too short to permit adequate flexing and changes in length due to expansion or contraction, hose service life will be reduced.

The following diagrams show proper hose installations which provide maximum performance and cost savings. 
Consider these examples in determining length of a specific assembly. 

ha_install_001

When hose installation is straight, allow enough slack in hose line to provide for length changes that will occur when pressure is applied. 

 ha_install_002

Adequate hose length is necessary to distribute movement on flexing applications, and to avoid abrasion.