Hoses 616 - 622

Hoses 616 - 622

1. Fitted Hose Requirements

   • Slack between both fittings
     • Between 5% and 8%
   • Tensile stress is unsafe and not permitted
   • Must not twist when end fittings are tightened
     • Shortened life
     • Damage or buckling
     • End fittings can loosen

2. Connect stationary areas to moving parts

3. Used in areas of high vibration

4. Three Hose Ratings

   • Low Pressure - Up to 600psi
   • Medium Pressure - Up to 3000psi
   • High Pressure - 3000psi +

5. Lay Lines

   • Run along the length of the hose
   • Yellow, red or white
   • Incorporate MIL-SPEC numbers and other manufacturer info
   • Indicates if assembly is twisted

6. Cleaning and Pressure-Testing

   • Cleaned out internally with compressed air blown through both directions alternately
   • Proof-test by capping one end

7. Installation

   • Inspect for
     • Applicability
     • Length
     • Cleanliness
     • Damage
   • Check Identification Tag for
     • Part number
     • Cure Date (Within limits)
     • Assembly Date (Within limits)
   • When Fitting Hose Assembly
     • Don't twist, check lay line printed along length
     • Subject to minimum flex during operation
     • Support every 24 inches
     • Don't stretch tightly between fittings
     • Ensure minimum bend radius is observed

8. Protective Sleeves

   • Protect hoses against wear and extreme heat
   • Heat shrink
   • Nylon spiral wrap
   • Teflon