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Which hose should I choose?
Selecting the correct hose is critical for pumping applications, hydrants, and fire protection, as it ensures uninterrupted and efficient water transport. The second most important criteria are the choice of material and diameter, because they directly influence flow rate and water volume.
When defining the hose, it is fundamental to decide on the area of application. If you intend to use it with a pump, there is the suction side and the discharge (pressure) side. In this article, we focus specifically on the discharge side, and also consider use cases when the hose is required for a hydrant or for firefighting purposes.
On the discharge side, flat hoses are commonly used; the first step is to choose the diameter and determine the type of coupling. Hoses can be supplied as assembled (with fittings) or unassembled (without fittings). For assembled hoses, the most frequently used coupling is the Storz coupling, commonly referred to as a “claw-type quick connector.”
In the case of hoses, the diameter always refers to the inner diameter (in mm), which is often also given in inches.
Braided flat hoses may have an inner lining made of rubber (EPDM) or plastic (PU) or silicone. This is one of the most important parts of the hose, as it ensures pressure resistance.
The outer jacket is typically made of woven fibers from plastic granulate, or a specially designed rubber/PVC outer layer is applied. The latter, although more expensive, is much more durable, and therefore often recommended for outdoor use in agriculture. Additionally, these materials are resistant to chemicals and oil.