Types and characteristics of a flexible liner for water , especially exploitation and selection

Until recently, the water used for the liner pipe only.However, in some cases, this way of organizing the water supply connection or plumbing fixtures is very inconvenient.Alternatively, you can use a special type of pipeline - a flexible liner.

Design features and application

Unlike steel or propylene pipe it has a large measure of flexibility.In fact, this hose of elastic material, which are installed at the ends of the connecting elements in the form of fittings with male or female thread.

design flexibles

Despite its apparent simplicity, flexible connection has a complex structure.Thus, to ensure sufficient elasticity of the tube is made of rubber or EPDM rubber.

In addition, to ensure a long lifetime of the hose should have the following components:

• Protective braid.Made of stainless steel wire.Necessary to prevent mechanical damage to the structure.
• Crimp sleeve.Universal mounting component, which can be installed nut or fitting with external thread.

This is the most common design of a flexible liner.It can vary depending upon the required performance, which should tell me more.

pressure and temperature

Any water system has its own technical indicators.These include pressure (water) and temperature (hot water and heating).So be sure to pay attention to these characteristics when choosing a flexible liner.Otherwise, it quickly fails.

most common defect

If the water temperature is almost always known to the consumer, to determine the pressure in the system can be difficult at home.To solve this problem, you can use the standard values ​​of this indicator in various systems.

• centralized water supply - 4 atm.
• Autonomous heating system with forced circulation - from 1.5 to 3 atm.
• Central heating - from 2 to 4 atm.

In the latter case there are sudden pressure surges.Therefore it is recommended to choose a model with a flexible liner with a margin of 20-25%.

material manufacturing

All flexible hoses for water supply are different manufacturing materials.In most cases, this is used as a base rubber, enclosed in a steel sheath.However, in cases where operating rates are higher standard, it is necessary to use a corrugated pipe - the bellows.

It is made of stainless steel.The specifics of its design is the presence of alternating rings differ from each other in diameter.During manufacture, there is a selective harvesting crimp, whereby the flexibility of the tube gets larger.

Such models flexibles are used in the following areas:

• All kinds of water supply, except heating.
• Gas.
• in the industrial sector - food and chemical industries.

Connection

Connection flexibles in any system is done at the expense of mounting elements located at the ends of the structure.It may be the union or union nuts.

For right choice of flexible hose model, you must first determine the type of connection.To do this, measure the size of the installation site in the line or pipe fittings of the device.It is also important to pay attention to the thread type - internal or external. fitting size can vary from ½ "to 1 ½" .

Also important parameter is the length of the hose.It is important that after the connection to the surface tension does not appear.Over time, this may lead not only to the deformation, but also to break the structure.Most often because of this fail couplings, which are pressed into the liner. hose length can vary from 200 mm to 5 m .