Safety breakaway couplings ABML series

This variant of the flow-optimised breakaway coupling offers exceptional resistance to lateral forces and was specially developed for use in marine and offshore applications. As with the ABVL series breakaway coupling, this coupling is particularly suitable for situations that require high flow rates and low pressure losses.

This variant is similar to the standard ABVM marine breakaway coupling in that it is designed to offer high resistance to lateral forces. A cylindrical overlap between the two coupling halves is also used here as a structural element to achieve the desired degree of lateral-force stability. However, the focus of the ABML series breakaway couplings is on delivering the high flow rate of the ABVL series. Compared to the standard marine breakaway coupling, this cuts loading times by up to 75 per cent, this delivering real financial returns from its first use on. Due to the low pressure losses in this flow-optimised variant, the ABML series breakaway coupling is also particularly suitable for retrofitting to existing loading facilities – without any significant increase in loading times.

Fields of application
Particularly in the marine and offshore sector, breakaway couplings are frequently installed between floating hoses.
A heavy swell can exert high bending forces, which could cause a conventional breakaway coupling to release unintentionally.
The same applies when hose lines are being coiled.
In this case, the breakaway coupling must withstand lateral forces created on the radius of the hose reel in order to avoid unintentional release.

Functional principle
As with all breakaway couplings fitted with breaking pins, separation is triggered by the tensile force transmitted by the hose – although only in the axial direction on the marine breakaway couplings. Once the pins break, the valves close and product leakage is prevented. The breaking pressure of the breaking pins can be individually selected depending on the tensile strength of the hose.