Under normal connected conditions, the breakaway coupling allows liquid or gas to flow freely with minimal flow resistance. The two halves of the coupling are sealed by an O-ring at the mating surface, ensuring leak-free operation during transfer.

When an excessive force is applied, the break pin is triggered and shears, releasing the two halves of the coupling. At the same time, the spring-loaded valve cores are activated and close rapidly across the flow path. The pressure of the liquid or gas being transferred is then contained within each half of the coupling until the pipeline is depressurized or drained. The coupling can then be inspected for damage, and a repair kit can be installed to restore it to full functionality. It can be put back into service after installing a new break pin.

Full-Angle Activation

Full-angle activation eliminates the risk of coupling failure caused by improper pulling direction. In real-world applications, the direction of accidental pulling is often unpredictable—such as unintended vehicle movement, vessel drift, or equipment collisions. If a breakaway coupling can only be activated in a specific direction, it may fail to function properly in an emergency, leading to media leakage.

Connected State Diagram

Disconnected State Diagram

Advantages

• Instantly closes the pipeline at the break point upon activation

• Easy to reset on site, saving time and cost

• Dual conical valve core support – enabling high flow rate and preventing deformation

• Spring unaffected by pressure changes – no interference with the flow path

Highlight

The tripod star valve disc features a conical support structure that, together with the conical valve core, forms a dual-cone valve core assembly. This creates a self-tightening effect, providing excellent pressure-bearing performance. Compared to conventional disc-type valve cores, this design reduces turbulence and flow resistance. It also avoids axial displacement of the valve core caused by asymmetric pressure, which would otherwise result in reduced flow rate