The ABOV series couplings provide a free flow cross-section and thus practically no pressure loss, since the flow volume is not influenced at all. Thus the loading times are shortened without additional energy spending. Vice-versa, considerable pump performance (pressure loss) can be saved at identical loading performance.
The ABOV series breakaway couplings are the cost-effective alternative for handling non-critical media. They are particularly suitable for harmless media that do not cause significant ecological or economical damage.
The construction of the ABOV series is characterised by lightness and compactness and thus provides the best choice for many applications.
The ABOV series is the cost-efficient solution for all processes where only the protection of the plant is in the focus – that is when the loaded media are no danger to man and the environment and the loss of media does not cause significant economical damage. Thus, plant safety can be ensured by making few investments and virtually without additional pressure loss.
ABOV series breakaway couplings provide the same triggering mechanism as the ABV series and separate the line at a defined tensile load. However, they do not have any non-return valves that close the two line ends after separation. The tensile load should be selected with a sufficient safety margin below the load limit of the line, such as the maximum permissible tensile load of a hose line.
The basic principle:
The ABOV series couplings consist of two almost identical coupling halves. These are connected via a pair of flanges by means of three breaking pins during normal operation. The flanged connection has no overlaps, so tensile forces acting on the line are directly transmitted to the breaking pins. The ABOV function is available without limitation of the load angle. When pure axial load is applied, the tensile force is distributed evenly to all three pins so that the threshold for triggering is the highest here. However, when lateral tensile forces are applied, the load is distributed unevenly to the breaking pins; the load increases with the size of the angle to the coupling axis. The load then increasingly focuses on one or max. two pins, so that the planned separation takes place at a lower threshold value.