How to prevent the most common failures of metal hoses?

Metal hoses, despite their 'heavy-duty' name, are in fact very fragile. The connection point between the corrugated tube and the fitting is particularly vulnerable to all kinds of stress. Therefore, when planning and/or installing the system, it is important to prevent: a. hose kinking - use a correct bend radius, bend restrictors or use angled [...]


Which fittings can be attached to metal hoses?

Fittings are attached to metal hoses and ferrules by a special process such as TIG welding or, less frequently, brazing. The standard AF... solutions are described in our catalogue/website in the section Industrial Hoses - metal hoses. A bigger/smaller fitting can be joined with a steel hose via an additional reducer. Using seamless pipe elbows, [...]


What are the maximum operating parameters, including pressure and temperature, that metal hose assemblies can operate within?

Metal hose assemblies come in countless construction and material options so they can operate at actual operating parameters reaching very high values.The volume of transmitted pressure is determined by: nominal diameter, wall thickness of a source material, geometry of corrugations (pitch and height) and the number of braids. The same applies to the working temperature, [...]


What is the main difference between stripwound and pressure metal hoses?

The main difference between these hoses is their construction and application. Stripwound hoses („Peschel hoses”) are manufactured by winding profiled, metal strips that overlap each other. They are intended for the extraction of gases and fumes and transfer of bulk materials. Due to their construction, they are not pressure tight. They are usually attached to [...]


Is the type of material of the claw coupling relevant?

Yes, it is. Before choosing the material, it is necessary to determine what medium these couplings will be used for. Standard coupling materials include zinc-plated cast iron, brass and stainless steel. In addition, the sealing material must be chosen: NBR or Viton.

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