Nov. 04, 2024
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Water hoseA 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.
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A reinforced series of tubes; these can withstand up to 10 bar (1,000 kPa; 145 psi) of pressureTo 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:
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.
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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.
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.
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The company is the world’s best marine raw water hose supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
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We&#;re all about fire hose here at Rawhide, but have you ever wondered what their history is? Learning about how we went from ox gut to the powerhouse double jacket attack hose is essential to understanding fire protection engineering and garners an appreciation for the inventors of the ages and those who risked their lives fighting the fires to keep us safe.
It seems that as soon as man created fire, he just as quickly discovered how to put it out. Well before a conduit was invented, man literally carried water to fires by hand. This led to the realization that if a vessel could carry a lot of water, the fire would be extinguished faster. Thus, bags made from ox gut were born, and their existence was documented as early as 400 B.C., in which the bags were filled, then stomped on, blasting the water out of the bag and onto the fire.
Around , Dutch painter, inventor and printmaker, Jan van der Heyden and his son produced what they referred to as &#;fire hose&#;. Jan van der Heyden went on to write the first firefighting manual: Brandspuiten-boek.
Interestingly, Jan van Heyden and his son sewed leather tubes together. Leather is known to be tough, yet flexible making for a good way to carry that water to the fire. Leather is also known as &#;&#;Rawhide.
The first hoses were sewn in 50-foot lengths, which is still considered a standard length to this day. This allowed firefighters to get closer to the fire, which enabled them to aim and shoot the stream precisely where they wanted it.
In the early &#;s, fire protection engineers introduced hydrants, tanks and cisterns and nozzles were designed to further improve water flow characteristics. One problem that surfaced early on and plagued early fire hoses was leakage. The stitches that connected the leather leaked and after a while the leather itself began to seep water. The introduction of pump action tankers led to overpressure in which the hose would burst.
Rivets were introduced in and were applied to the thickest part or rear quarters of the cowhides. This made the hose almost leakproof, however, it added significant weight. A 40 to 50 foot length of hose weighed upwards of 85 pounds. The leather hose required a good deal of maintenance much as it still does today. Early leather hose was treated with fish and whale oil to help preserve it.
In , James Boyd patented rubber lined, woven jacketed fire hose. In those early days of modern fire hose the jackets were made from spun cotton. Akron Ohio&#;s own Charles Goodyear discovered the vulcanization process and applied that to rubber hose, reinforced with cotton ply.
Through the subsequent decades to follow, the fire hose has undergone monumental changes. The jackets are now polyester woven yarn, treated to resist mold, mildew and abrasion. One can only wonder, what improvements and developments lie ahead.
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