DME&JDE – Hose Whip Restraining System

Hose whip restraining system is one of the most common accessories for fluid hoses in use and consists of two parts: the hose collar and hose whip restraint cable assemblies. The hose collar and one end of the cable assemblies are connected to the fluid hose and then fasten them to the port connector or flange connector.

When the hose is under high pressure, it is easy for a pressurised hose or hose fitting failure, while the hose whip restraint cable can limit the hose to a controlled range, preventing the hose or the splashing liquid from damaging the nearby equipment and injuring the operator near the faulty hose.

Hose whip restraining system is installed on the hoses.
How does it work?
Hose Disengaging

The "Hydraulic Safety cable" system does not operate during the step of disengaging the flexible hose, but, if applied correctly, it ensures that the hose is fully disengaged from the ferrule that restrains it. During this step, the flexible hose gains velocity and power due to the pressure increase of the oil contained therein.

The pressurised hose is fall off from the connector and the hose is fastened to the equipment by hose whip restraining system.
Whip Effect

During this step, the pressurised oil exits from the flexible hose. The hose begins to release the energy contained therein, and gains considerable velocity, triggering a hazardous "whip effect" which is very dangerous to anyone or anything in its vicinity.

Liquids are splashed from the hose and the hose is fastened to the equipment by hose whip restraining system.
Hose Restraining

Once the hose has been disengaged and the pressure released, the flexible hose can be restrained. This is where the "Hydraulic Safety cable" system gets into operation: the stainless steel cable is tensioned and deformed while the plate cuts into the rubber of the hose, preventing the clamp, firmly attached to the hose, from disengaging. The hose clamp and plate start to deform in turn, elastically absorbing the force released from the travel of the flexible hose.

The pressurised hose is restraining at the maximum range by the hose whip restraining system.