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Water Pipes

August 12, 2017 18:08

Types of flexible podvodok and selection criteria


  • 1 The materials of which make the flexible liner
  • 2 How to choose a flexible liner
  • 3 choice between liner for gas and water

Flexible hose is a hose made of elasticmaterial protected with a metal braid fasteners at the ends.Used to connect the communication in remote places (faucets, showers, toilets), where to do so with the help of hard piping is difficult.Flexible hose or hoses for gas or water may be made of different materials.Hence the difference in the quality and field of application podvodok.

The materials of which make the flexible liner

By design, flexible connection hose is made of rubber, which provides adequate softness and elasticity.

quality flexible hoses for water shall be manufactured from non-toxic rubber hose.Cheap copies are made of technical rubber.

Top flexibles hose covered with braiding.It may be made of aluminum, stainless steel or nylon.

  • Flexible hoses for water or gas are reinforced with aluminum up to 3 years.It is the device can properly operate at pressures up to 5 atmospheres and temperatures up to 80 degrees.

main disadvantage of aluminum is that it while in the long time in a high humidity environment (for example, bath or bath) corrodes.As a result, metal flexible hose for water breaks and entails the destruction of rubber hose and leaking.

  • Liner stainless steel live much longer - up to 10 years, and can withstand pressures up to 10 atmospheres at temperatures up to 95 degrees.The conditions in which it can operate the device, found almost everywhere, so stainless steel - the most common flexible liner.
Flexible hoses with braided

Flexible hoses with braided metal

  • Reinforced flexible leash is made to the water with a nylon braid.Life - up to 15 years, the maximum pressure of 20 atmospheres, the maximum temperature - 110 degrees.Such liner though are of higher quality, but rarely used, as is usually the terms on which they are adapted, are rare.
  • Liner bellows is particularly resistant and long service life.If the above types of outer shell made of a metal braid, then the shell - a one-piece corrugated hose that is more durable, but does not lose its flexibility.
Bellows flexible connection

Bellows flexible connection sleeve with corrugated metal

How to choose a flexible liner

flexible connection to last a long time, it is necessary to choose the right.

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  • Before selecting flexibles should find the water temperature and pressure in your system, and should buy the product corresponding to these parameters;
  • respect to these same parameters, as well as the environment in which the work will be flexible connection, select the material from which it is made.To buy aluminum hose at the price of stainless steel, it is necessary to weigh it in your hands.Aluminum should be much easier;
  • reliable flexible hoses for water should be soft.If it is not endowed with this property, it threatens to break the flexible hose.Check the elasticity and softness is easy.It is necessary to take the liner at one end if it will take a vertical (hanging) position, then it is fairly elastic, when it will be almost horizontal position, it is very solid;
  • fittings, which are located at the ends of the flexible liner, should be free of cracks, and their shells must be fully Pressed on its circumference, capturing material braid.
Fittings flexibles

Fittings flexibles.The figure also colored weaving visible.

fittings flexible hose shall be made of brass - a metal that will not rust.Podvodok are instances in which these elements are made of aluminum or plastic.In the case of aluminum fittings, they will rust and will be ruined in a humid environment, and easy to break the plastic over time by themselves in any environment.So, to pay for the stainless steel in this case is meaningless.

  • If a hose flexibles goes characteristic chemical smell, it is made of technical rubber.Odour can remain permanently, as well as a material characteristic of low elasticity and brittleness.Therefore it is better to avoid these instances.

  • Flexible hoses for water differ in temperature indicators - have for cold and hot water.Hoses for cold water are marked with a blue ribbon woven into the metal braiding, hot - red, universal - both.
  • flexible metal hose must be equipped with a reliable coupling nut.In low-quality copies of the nut may be too thin, which is in the process of tightening or operation can crack and break.

If eyeliner choose not to correct (or very cheap), we can get a result in the form of emergency leaks, which can happen suddenly.Particularly dangerous is a gas leak.When purchasing hoses pay attention to the operating pressure and service life.

choice between liner for gas and water

Sometimes plumbing is installed flexible leash for gas.This is in order to save (lying around somewhere in the gas, and do not want to buy water), ignorance or incompetence of sellers (slapped bad advice).In fact, it is impossible to do so, and hoses for gas should be carried out only gas transportation.And there are two reasons.

Provision for gas are usually equipped with fittings made of aluminum, even if the braid rubber hose is made of stainless steel.This means that they will rust in wet conditions, and soon will come into disrepair, will take place.

Flexible hoses for water pass special certification and are environmentally safe for humans.This is necessary, as they passed through a drinking water.Gas fittings do not pass this certification, respectively, they can be hazardous to health, poisonous.

Therefore, in pipelines can only use the bellows type flexible podvodok.