Safety in Design When considering the Breakaway coupling options available to you, it is important to be confident in the design principles of the coupling. Our original FLIP-FLAP design not only provides minimum head loss through the unit but also ensures that under no circumstances can the seal between the two coupling body halves open to atmosphere, before the internal flap valves have been released and provided a 100% shut off. This design feature eliminates the potentially hazardous scenario called 'Partial Break'. 'Partial Break' is when the coupling has been partially parted but not fully, due to the applied force being prematurely removed (perhaps due to an operator beginning to move the vehicle and then realising they have not disconnected, thus stopping). With some designs of breakaway coupling it could be possible for a 'Partial Break' and an uncontrollable spillage of media to occur. This cannot happen with the KLAW design of coupling. To this affect our couplings have been awarded Lloyds Type Approval in the past, specifically highlighting this important and unique design feature.