Date :
June 6th, 2017Posted By :
JRE StaffDifferent type of work a Hose can do!
Hoses are hollow tubes that are flexible. Hoses are used for carrying fluids between two locations. They are also called sometimes pipes, but a hose is being flexible while a pipe is just a rigid tube. A hose usually has a cylindrical shape. Hose design is aims to achieve a combination of performance and application. Common factors in hose design are length, weight, size, chemical compatibility and pressure rating.
Hoses can be built from a combination of various materials. The most used materials for Product Design Prototypes are PVC, polyethylene, polyurethane, nylon and natural or synthetic rubbers. The materials are selected for various hose applications based on the pressure rating and environment needed. More recently, hoses started to be made of special grades of polyethylene called XLPE and UHMWPE. Other materials used to build hose include stainless steel, Teflon (PTFE), as well as other metals.
Hoses can feature reinforcement structures made of steel cord or fibers in order to ensure a better pressure resistance. Among the reinforcement methods that are commonly used are included wrapping of fabric plies, knitting, spiraling and braiding. The reinforcement has the role to increase the stiffness as well as the pressure resistance of the hose. In order to obtain flexibility are used bellows or corrugations. Helical or circumferential reinforcement rings are usually applied in order to maintain these bellowed or corrugated structures under the buildup of internal pressure.
Applications
Some hoses are used to transport air or other gases, while others are used for water and other various liquid environments. Hoses that carry fluids through fluid or air environment, are being typically used with nozzles, flanges, spigots and clamps in order to control the flow of the fluids. Hoses for technical gases include low pressure hoses as well as high pressure ones.
Aspects such as safety factors, required standards, gas flow, electrostatic properties, gas permeation, working temperature, working pressure and type of gas are taken into consideration when choosing the appropriate hose for technical gas. For instance, a nitrogen hose is a high pressure hose used for carrying nitrogen gas. A nitrogen hose is usually made of a stainless steel double braid outer, with PTFE liner.
Specific applications for hoses include:
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