Joyce Laird • Contributing Writer
Is there such a thing as a “basic” industrial hose assembly?
Paul Berg, President Hosecraft USA says that it pays to differentiate the hose from a completed hose assembly. While selection of both are equally important, a “hose assembly” is less ambiguous than a “hose” because while there are many types of industrial hoses, selecting the hose itself may not include fittings.
“Any hose assembly includes fittings that are specific to the application. An industrial hose assembly includes the hose, fittings, and a way to attach the fittings to the hose. For most industrial hoses, the fittings have a barbed end that inserts into the hose. Metal hose fittings weld to the hose,” Berg says.
How to match the hose assembly to the application?
Because there are so many materials for both industrial hoses and the associated fittings, there is always an answer to almost all industrial applications. Hose types can be broken down by the material they are made of, such as metal, rubber, PTFE, PVC, composite, and so forth.
Berg adds, “There is also breakdown by application to consider, such as higher pressure air, low pressure air and fume, chemical, dry material handling, petroleum, steam, food, or other special materials that will pass through the hose or that may need specific pressure monitoring. All the needs must be considered and balanced for a good assembly.”
What are the latest parts/material innovations?
Berg notes that one important innovation is composite material hose that not only has unique chemical resistance properties, but also will usually leak slowly well before it would burst. Other lesser known options are internally expanded fittings that are flush with the inside diameter of the hose. This prevents build up of material, and allows for food grade use. Also, very high pressure metal hoses are now available up to 12” diameters. Again, these considerations can be extremely beneficial to certain applications.
How do you specify a hose assembly/material/etc. for your application?
Berg says that there are many things to consider. Chemical compatibility, erosion, flexibility, and cost are all important in choosing a hose. Fittings must also be chosen for chemical compatibility, as well as each of connection and security of connection. Any good manufacturer or distributor can guide users through this process. Hosecraft USA web site allows for easy comparison of the various hoses, whether browsing by the material of the hose, or the application. “When in doubt, always consult with an expert to guide you through the selection process. This is specifically important if the application is a new venture or when changing over older lines to upgraded high automation throughput.”
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