Couplings

Couplings are the optimal way to link hoses when things have to be done quickly and hoses need to be disconnected or connected quickly. They are flexible and are the best-known way to connect hose systems to different devices. Depending on the specific fluids or materials to be used, the pressure range and the final application, a hose coupling is the ideal choice.

Difference between coupling and screw connection

Above all, the most important feature is that hose couplings increase the speed of emergency forces. Hose screw connections, in contrast to the couplings, are fixed connections. In some cases, these can also be loosened relatively easily with an appropriate wrench, but the locking and opening time lags behind considerably. When seconds are at stake in an operation, it is precisely these that can be decisive for survival.

Shut-off systems for hose couplings

One particular advantage of couplings for industrial or fire hoses is that they can be closed or opened entirely without the use of additional tools or any other auxiliary equipment. Coupling systems used for this purpose are called:

• Open hose coupling
• Single shut-off hose coupling
• Coupling system shutting off on both sides

When disconnecting open hose couplings, please ensure that the medium transported in them can flow out. While this may not be a problem with extinguishing water, it may be harmful to the environment with other media.

When shut-off systems are used, the through-flow is prevented either on one side or on both sides at the moment of disconnection. Our advice: Always use a one-way shut-off coupling or, at best, a two-way shut-off coupling for any medium except water. An example of double shut-off systems are the dry couplings.