Hose and Coupling Knowledge Base

Has this ever happened to you?

The hose is connected correctly to the coupling, but then at some point it starts leaking or the hose comes off? These problems can be caused by a number of different things. Here, we look at some solutions for these problems.

In Topic 001, we talked about why hoses become stiffer with use. This stiffness is a major cause of hoses leaking and becoming disconnected.

When attaching a hose to a coupling, the hose is placed on a nipple that is slightly larger than the inner diameter of the hose. When this happens, the hose diameter is widened slightly, and the natural tendency of the hose to return to its original size provides a gripping force.

As the hose grows stiffer over long use, this elastic shrinking force weakens so that the hose can no longer perform normally. This leads to leaks and disconnections.

This applies not only to hoses connected to nipples, but to cases in which a clamp is used as well. Even when the initial attachment is a perfect, leaks and disconnections may occur over time.

Here are some ways to prevent these problems:
1. select a hose appropriate for your use and that resists becoming stiff, 2. perform careful maintenance, including regular re-tightening of hoses, and 3. check hoses regularly and replace them when they begin to become stiff.


Hoses leak when they become stiff