Flexible metal hoses are, to put it simply, flexible pipes made from corrugated metals, most commonly made from stainless steel, and are often given further durability and resistance by using a stainless steel wire braid. Both ends of metal hoses will either be weld threaded, flange, or special fittings designed specifically for a customer’s requirement, alongside the length and fittings of hoses, which are generally customised to each order.
A flexible metal hose is used as a component to transfer liquids and gases with various strengths, pressures, and temperatures. Not only do the hoses have to withstand harsh materials from the inside, but they are also often required to withstand extreme environments from the outside. This is completely dependant on the industry and machinery used that has the need for flexible metal hoses.
The selection of a hose is determined completely by the application it is being installed into, alongside the aforementioned environment characteristics:
It is known that the physical properties of any material put under alternating or extreme temperatures will change physically. By review of the working environment, nature of the application, and the working pressure, you can easily determine the type of flexible hose needed to work in a range of operating temperatures and environments. The range of hose types, metals, fittings, and attachment processes will all determine the temperature limit.
Pressure ratings of flexible metal hoses are set according to their type, material, and size. Depending on the conditions to which a hose is put under, the pressure is also affected by factors that include temperature, vibration, pulsation, and stresses.
It is incredibly important to take into account the materials being transferred by each metal hose. Corrosion can occur if the material inside the hose is particularly harsh, as well as materials from the outside potentially causing damage. A hose should be selected and installed on its ability to resist corrosion due to harmful materials and chemicals.
For further information on flexible metal hoses, contact your local hose management firm for further discussion.