Break-Away Sub


simple, reliable and MORE cost effective

SubseaDesigns Break-Away Sub is a simple, reliable and cost efficient alternative to more complex weak links. Originally designed for protecting hoses during well intervention.

Features and benefits

Product verification

functional testing

how it works

An example of use of the Break Away Sub is a delivery to a well intervention system. The Break Away Sub is in this case is mounted inline the control line of typical Fail-Safe Closed valve. The Break Away Sub is hung off on the subsea structure with a wire with a capacity exceeding the  hose.  During drift off the hose will take up a straight-line position from the wire hang-off point to the vessel and at a certain tension load the Break Away Sub will separate without introduction any loads to the valve

Illustration of Break Away Sub used for controlling a Safe Closed Valve for a well intervention task

Hangoff point at subsea structure
To / from surface HPU
Control line to valve

Technical data

Design codeISO 13628
Prepared for hoses up to 3 inch
570 mm (1/2-inch hydraulic hose)
Overall diameter
240 mm (1/2-inch hydraulic hose)
Design pressure690 bar limited by stab
Material Typical duplex or superduplex
Weight 49 kg (1/2-inch hydraulic hose)
Weight N/A