Hose

Flexible hollow tube to carry fluids

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Water hose

A hose is a flexible hollow tube designed to carry fluids from one location to another. Hoses are also sometimes called pipes (the word pipe usually refers to a rigid tube, whereas a hose is usually a flexible one), or more generally tubing. The shape of a hose is usually cylindrical (having a circular cross section).

Hose design is based on a combination of application and performance. Common factors are size, pressure rating, weight, length, straight hose or coilhose, and chemical compatibility.

Applications mostly use nylon, polyurethane, polyethylene, PVC, or synthetic or natural rubbers, based on the environment and pressure rating needed. In recent years, hoses can also be manufactured from special grades of polyethylene (LDPE and especially LLDPE). Other hose materials include PTFE (Teflon), stainless steel, and other metals.

Dredge rubber hoses have a long story, which features high strength and flexibility. A flexible dredging hose widely used in dredgers to convey silt or gravel. It is resistant to abrasion and wear to ensure long service life. Types of flexible dredge hose include the floating rubber hose, discharge hose, suction hose, armored hose and ceramic hose.

Reinforced rubber hose

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A reinforced series of tubes, these can withstand up to 10 bar (1,000 kPa; 145 psi) of pressure

To achieve a better pressure resistance, hoses can be reinforced with fibers or a steel cord. Commonly used reinforcement methods are braiding, spiraling, knitting and wrapping of fabric plies. The reinforcement increases the pressure resistance but also the stiffness. To obtain flexibility, corrugations or bellows are used. Usually, circumferential or helical reinforcement rings are applied to maintain these corrugated or bellowed structures under internal pressure.

All hoses are designed and manufactured to suit the application for which they will be used. The STAMPED procedure may be used to specify a hose. STAMPED is an acronym meaning:

• Size, I.D., length and O.D. constraints
• Temperature
• Application
• Material/Media
• Pressure
• Ends
• Delivery

With this information a seller or designer can make an offer to supply. There are other considerations, such as movement dynamics, installation situation, and longevity required. Hoses are also categorized in other broad based application areas, such as offshore, land, oil, water, and chemical.

Applications

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Hoses can be used in water or other liquid environments, or to convey air or other gases. Hoses are used to carry fluids through air or fluid environments, and they are typically used with clamps, spigots, flanges, and nozzles to control fluid flow.

Specific applications include the following:

These are often connected to either the choke manifold, cement manifold or standpipe manifold.

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In some cases, a rubber hose has been used as a weapon with which to beat somebody. This is the origin of the term rubber-hose cryptanalysis.

See also

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• Cut-off factor &#; Used to calculate the length of a hose cut
• Faucet &#; Valve controlling the release of a liquid or gas
• Hose coupling &#; Connector on the end of a hose
• Pipe &#; Tubular section or hollow cylinder
• Tubing &#; System of pipes used to transport fluids
• Heated hose

References

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Further reading

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Today I am thankful for the inventor(s) of the hose. Yes, that&#;s right, I bought a hose. Life has been full and many creative endeavors have been demanding my time these days. Thus, it became clear that my labor-intensive watering methods were in fact a barrier to the garden&#;s health. Simply put, if I found myself without the time to water, I would skip it all together. I&#;ve been relying on the summer rains to pick up my slack, but they must be busy too because I haven&#;t been seeing much of them. Dare I say, it&#;s possible that we are in a dry micro-climate here.

In giving thanks to the hose, I wondered: what&#;s the origin story? Many sources will tell you that a Dutch man by the name of Jan van der Heiden invented the firehose in the s. But surely humans had the need for such a useful tool far more than 500 years ago. A bit more digging on the internet yielded this tidbit of information: there is evidence of firehoses dating back to 400 BC. The garden hose seems to evolve out of the fire hose, and the modern firehose&#; with its length and stitching &#;was inspired by van der Heiden&#;s idea to join together long pieces of leather. Before this brilliant advancement, folks were stuffing ox guts with water and stomping on them. I will spare you a lengthy history lesson but if you just must know, you can find more information here.

If you&#;ve been reading along with my misadventures in gardening, you may remember my horror in exterminating the supposedly harmless squash bugs. Well, let me tell you, one of the lessons I&#;m learning about gardens is that your homework is never done. A few weeks back, I started noticing these little yellow caterpillars that looked straight out of a Pixar film. As is the case with almost all things in the yard mid-summer, at first you notice one or two of something, then you blink and there&#;s an apocalypse on your hands. My squash plants have been completely taken over by squash beetle larvae, who, as it turns out, can transmit harmful bacteria amongst your plant colonies. Oh man, and I thought I was doing something nice by sharing the crops. What&#;s that saying about good intentions?

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