Stress factors
Given that the design of a KLAW Marine Breakaway Coupling is designed to resist Bending Moments and only respond to axial forces then Activation is unlikely. There is nevertheless the issue that frequent stress and therefore fatigue placed on the Breakstuds due to the repeated drawing of the Hose on the Reel will require additional maintenance attention.
Hose Kink stress is caused by the extent of Imperfect Contact Angle. There is high correlation between the total space between the section of Hose fitted with the Marine Breakaway Coupling and the Inner Hose and the risk of Hose fatigue (Illustrated above in two places as C).
All of the above stress factors can be magnified by any applied Hose tension when recovered back onto the Reel, and by additional Hose coils wound over the Breakaway Coupling, which may occur in some configurations.
KLAW Marine2 Breakaway Coupling
The Marine2 Breakaway Coupling is 15% lighter and 10% shorter than the KLAW Marine Mark 1.
This saving in weight and length provides exponential stress reduction benefits to Hose Reel applications and in consequence greatly reduces fatigue on Inner Hose and Outer Hose sections and on Marine Breakaway Coupling Breakstuds.
An illustration of variances in Imperfect Contact Angles due to the Coupling length
Profile Impact is higher in correlation to a greater Imperfect Contact Angle due to there being less support for the Hose other than the point where the Marine Breakaway Coupling is in contact with the Inner hose. Profile Impact can also be greater where Outer Hose is wound over the section of Hose fitted with the Marine Breakaway Coupling.
The following illustrations provide a comparison of the width of Imperfect Angle