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HOSE CONFIGURATION & LENGTH CALCULATIONS- ABRASION & TORQUE

The Third Rule is that the hose configuration should always be designed, and supported where necessary, to avoidany possibility of external abrasion.In some cases, the length, configuration and angle of the hose can be designed to avoid abrasion. In others, staticor moving support frames or support wheels are required.

Abrasion Incorrect - Hose abrasionagainst hose) Incorrect - Abrasion insidesupport Correct - No hoseabrasion Correct - No abrasion oversupport

The Fourth Rule is that the hose must not be subjected to torque, either during connection, or as a result of the flexingcycle.Torque (twist) in the hose can be applied during connection if the hose is accidentally twisted, or if the second endbeing connected is a screwed connection, and the hose is subjected to torque during final tightening.In a flexing application, if any flexing cycle of the hose occurs in 3 dimensions instead of 2, then torque will also occur:

C CORRECT - Flexing movementtakes place in 2 dimensions INCORRECT - Flexing movement takes place in3 dimensions, so torque is applied

Both Corroflon and Corroline hose have good resistance to a small level of torque, much better resistance that rubber or SS hosetypes, but it is still the best practice to take whatever steps are necessary to eliminate torque. If in doubt, consult Aflex Hose.

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