Construction / 04.11.2019

Anti-vibration water inlet for large diameters. Flexible hose for water supply. Flexible stainless steel braided water hose

Yes, not everywhere metal and even plastic pipes can be replaced with hoses, but where this replacement is real, the homeowner faces an important question - how to make the right choice?

Hose Benefits

The main feature of flexible eyeliner is directly in the flexibility itself. First of all, the hoses are more practical to transport - they can be folded up and take up less space.

As far as installation is concerned, here the hoses benefit not only due to the ease of the fastener itself, but also the mobility that the connected device can get. For example, you can move the same washing machine if something falls behind it. And if the connection was stationary, you would have to mess around with blocking communications and dismantling the connection.

Relatively easy not only installation, but also dismantling of hoses. Thanks to this, it is possible to carry out repairs or redevelopment of the premises and its networks less problematic. Hoses often have strength similar to rigid plastic pipes.

Disadvantages of hoses

FROM metal structures hoses, of course, cannot be compared, but for greater protection, some models are covered with a braid. Moreover, there are also all-metal flexible connections, but they are certainly not as strong as ordinary static pipes made of metal. Hoses are somewhat more expensive than conventional pipes, but they are used less, so the overpayment is not so significant. Both the warranty and the total service life of hoses is less than that of pipes. However, some modern flexible structures can serve for 20-30 years.

Water supply

Hoses are used to supply water to faucets, toilet bowls, batteries, washing machines, boilers ... Often, PVC or PEX pipes are used for this, which some experts classify as hoses, because flexibility characteristics are not the only feature of the classification. But these products are still more suitable for general wiring, and for direct wiring systems it is better to use flexible connections.

On sale you can find rubber hoses, but their number is very small. The fact is that they have a lot of disadvantages - expansion at high temperature and pressure, poor resistance to chemical and mechanical stress, relative unreliability of connector fastenings. Therefore, an increasing number of sellers and buyers are focusing on more modern designs.

The rubber hose in a metal braid has gained enormous popularity due to its good technical characteristics and comparative cheapness. The core of the system remains the same rubber hose, but on top it is braided with metal threads with red and blue stripes. Thanks to this refinement, the rubber is protected from hydraulic shocks and mechanical damage. Some manufacturers have gone further and instead of rubber use high-density ethylene-propylene rubber braided with stainless steel or aluminum. It is worth noting that steel braid is about twice as durable as aluminum braid.

One end of the hose ends with a metal sleeve with a union nut attached to the end of a threaded pipe, the other ends with a fitting that is screwed into the connected system. Around the bushings, the braid together with the hose is crimped with a metal sleeve.

Anti-vibration flexible hose- slightly improved braided hose. They are essentially the same, but the anti-vibration one has a thicker outer diameter. Due to the increase in the walls, such a hose dampens noise, therefore it is indispensable for pumping equipment.

Bellows hoses also resemble a flexible braided hose, but all parts of the hose that come into contact with water are made of stainless steel. The hose is made in the form of an annular corrugation (corrugated sleeve). The sleeves of the structure are rolled (radially deformed) along the sleeve and welded to the sleeve by means of roller welding.

The operating temperature range (from -50 to +250 °C) allows the use of hoses for almost any communications. In addition, the bellows hose is more resistant to mechanical damage. Accordingly, it serves about a third longer than braided, but it also costs more.

Hoses are by type of load:

into pressure
in pressure-suction
in suction (vacuum).

Wall material:

rubber;
polyvinyl chloride (PVC)
polyurethane
made of heat-resistant polyvinyl chloride
silicone
metal.

By type of reinforcement:

without reinforcement (tube)
with PVC helix
with fabric cord
with metal on cord.

Although hoses can be used for completely different applications, their designs share flexibility and some material similarity. Therefore, experts highlight the main tips that can be useful in carrying out most of the work:

The location of the hose must be easily accessible. It is wrong from the point of view of safety and practicality if, during repairs, it is necessary to partially dismantle the floor or ditch the walls. In addition, hidden communications are not available for an important service inspection.
In order to avoid bending, tension or twisting, when assembling flexible connections, a bending radius, on average equal to 3 times the diameter, must be observed.
The bending radius can be increased with flexible elbow connections.
If you do not provide a small margin along the length of the hose, then under pressure it will become shorter and excess stress will be created in the structure.
Electrolytic damage to the tips must be avoided and copper and steel must not be joined. Steel is joined to steel, brass to copper.
Metal parts must be protected from condensation which causes oxidation.
All flexible connections must have metal ferrules.
It is advisable to use two spanners. It is important that the tightening force of the tip provides the desired tightness of the connection. To ensure the tightness of the connection, excessive force is not needed - it can only damage the structure.
After installation is completed, check if the hose is kinked. Mounted systems must be tested for strength by leaving them under load for a while and checking the strength and tightness of the joints.
Do not expose connections to open fire such as a blowtorch. If something is being soldered or welded nearby, you need to protect the hoses with a heat shield.
It is important to know and consider the expiration date and replacement requirements of selected hoses, especially gas hoses. Sometimes replacement is needed after 10-20 years, but it happens that after 5 years, or even 2 years. If the hose is routed correctly, replacing it should take less than 15 minutes.

Watering

In order to make it easier to choose the right hose, you first need to decide on the necessary diameter. The most common parameters are 1/2″,3/4″,5/8′,1′.

Next, you need to choose the length of the hose. Bays come in sizes of 15.25, 30, 50 m, there are also cut-off hoses. The longer the hose, the larger should be its diameter. This is necessary in order to maintain sufficient water pressure when using a sprinkler or sprinkler system.

The next equally important factor when choosing a hose is the presence of diagonal reinforcement. It ensures dimensional stability, the hose does not deform under water pressure, does not kink or twist. This ensures a long service life.

It is also necessary to pay attention to the limit pressure water that the hose can handle. It must be higher than the pressure in the supply system (usually indicated in atmospheres). The manufacturer often indicates such data on the packaging.

And last but not least is the the absence of unsafe additives in the composition of the product such as calcium, barium and lead.

The bellows water inlet is a corrugated sleeve made of special quality. Such a device is very convenient, but it should be remembered that it is not as flexible as a rubber-metal hose. Bellows connections are used to connect water, air conditioners, gas and plumbing fixtures such as sinks, showers, and cistern. Flexible hoses in water pipes are installed at the last sections of the water pipe, connected from the main to the devices with which the consumer interacts.

The modern market offers a choice a large number of bellows connections from different manufacturers, differing in price category, models, functional purpose, color, size, quality, service life. Such hoses are very convenient in everyday life and are always popular with consumers. Now you can safely forget about outdated metal pipes. Almost always, during the repair or renovation of plumbing, a bellows water supply is used. Customer reviews about these devices are only positive. With the use of quality materials, all domestic problems fade into the background.

The choice of eyeliner

First of all, you should take into account the quality of the materials used by the manufacturer to make the eyeliner. It is worth paying attention to the products of Italian companies, made of durable quality materials, aluminum and stainless steel. The eyeliners of many manufacturers, having good technical indicators, differ affordable price. Some manufacturers are developing an anti-vibration eyeliner that has a large diameter and eliminates noise and hum when connected to household appliances. Such devices have no analogues in the domestic market.

Popular manufacturers

The main manufacturers of such eyeliners are the brands Witzenman, Pagri, G-beka and Hydraflex. If the bathroom uses a boiler or some other plumbing, you can not avoid the presence of fixtures that will catch your eye. In such situations, the Hydraflex bellows water connection is recommended. The products of this company have a modern neat appearance complementing the aesthetic design of the bathroom.

Such eyeliners, of course, are of high quality and can serve customers much longer than ordinary flexible hoses. These devices can be used for both cold and hot water. It should be borne in mind that the cost of a branded eyeliner is several times higher than the usual one.

Appearance

From the proposed range, it is recommended to give preference to hoses whose fitting nuts are made of austenitic steel, since the quality of brass is very low. You can recognize this material by cracks and dents. The seam between the spiral part and the fitting must be made by argon-arc welding, and not by rolling, as on carved connections. Dark spots are rust, and a too rounded shape of the joints indicates the unreliability and tendency of the material to oxidize. Good seams have a thin and even profile and almost do not differ in color from the hose.

A good quality bellows-type water line is free of dents, rust spots, or chips. Their presence indicates the use of low-grade steel. This is considered a sign of poor metal strength. The protected eyeliner is, as a rule, coated with a PVC film. The difference between products for gas and water most often lies in the rigidity of the spirals due to the calculation for interaction with more or less pressure. This is checked by the method of ordinary stretching of the hose.

Operation features

Many manufacturers officially guarantee that their hoses will last 15 years. A good bellows water supply "Aquaprof", for example, can be easily operated for 30-35 years, and with gentle operating conditions, this figure can be extended up to fifty. The service life also depends on the fitting materials. The minimum service life is observed for elements made of carbon steel and brass. Stainless steel nuts are the most durable when compared to other materials.

The design of the spirals makes it possible to twist the hose, and the bend will be fixed. A high-quality stainless steel bellows water inlet can be stretched 1.5-2 times in length without any risk. Due to the rigidity of the corrugated structure, its diameter should not change. When choosing a hose, you can ask the seller to step on the eyeliner or put some kind of load under it.

Advantages

A modern bellows water supply makes it possible to quickly install plumbing fixtures, various water supply devices, gas and heating equipment in the most hard-to-reach places in the country, in a cottage, apartment or office. High-quality hoses have high technical performance, anti-vibration properties and are indispensable for organizing comfortable conditions in any room. The remarkable aesthetic properties of flexible eyeliners make it possible to emphasize stylish interior apartment or office.

What is the difference between a bellows water supply and metal pipes?

Long-familiar iron pipes are used less and less. When connecting water supplies, heaters, bidets and other appliances, bellows hoses made of polymer materials, rubber and metal. Such a water supply is very flexible, does not rust, is resistant to various aggressive environments, as well as temperature extremes, and has an increased service life.

Eyeliner design

The hose is the most important element of the bellows connection. It can be made of non-toxic rubber different brands, as well as other materials. The components used must be environmentally friendly, not form harmful compounds on the walls and withstand relatively high temperatures. Rubber hoses are protected from the outside with a braid made of stainless steel, aluminum and other materials so that the bellows water supply is not subject to mechanical stress and has a sufficiently high strength.

All connecting elements - fittings, nuts with a gasket, nipples must always be made of sufficiently high quality materials.

The installation of drinking pipelines is a very important event that must be approached with all seriousness. Water that is transported through such a communication should not change its chemical composition. It follows from this that pipes for such communication should not be oxidized. Among metal pipes, stainless steel products are the best quality option.

Stainless piping is one of the most practical and durable options for connecting to a water supply system.

Stainless steel plumbing

For the installation of drinking communications, two types of stainless pipes are used:

from galvanized stainless steel;
from chromium-containing stainless steel.

Both of these types work well. They are the most environmentally friendly among all and practically do not affect the chemical composition of water. Galvanized steel is an alloy that contains iron and carbon, while chromium-containing stainless steel contains chromium, as its name tells us. In the air, a chromium-containing stainless steel plumbing is covered with an oxide film, which performs protective functions.

Sanitary and hygienic studies have shown that both of the above types are harmless to human health. In addition, they have incredible resistance to aggressive corrosive influences and high temperatures. Stainless steel pipe for water supply has excellent strength characteristics. However, they also have their drawbacks, which are worth paying attention to.

After 8–10 years, such a pipeline begins to accumulate salt deposits on its inner walls, which leads to a narrowing of the pipe lumen and a decrease in the communication throughput. It is worth noting that this minus also applies to cold water pipes.

Such pipes are produced, as a rule, in two ways:

Useful information! The welded manufacturing method is simple and cost-effective, however, seamless pipes have increased strength characteristics.

Plumbing systems, mounted and stainless corrugations, do not impair water quality

Stainless pipes are perhaps the most reliable in terms of operation, this is due to their popularity in the modern market. In addition to conventional stainless pipes, there are products that are also used for drinking water pipes - stainless flexible corrugated pipes.

Applications and advantages of stainless steel flexible corrugated pipe

Corrugated stainless pipe for water supply was invented at the end of the last century. It has high performance characteristics and is used both in everyday life and in various industries. Consider the main areas of application of such a product:

drinking pipelines;
technical water supply;
water floor heating structures;
gas distribution systems;
fire extinguishing systems.

Corrugated stainless steel pipe has a number of positive qualities:

compactness, which allows you to quickly and quickly perform installation and save space when connecting various equipment to water pipes. In addition, these pipes are stored and transported rolled into bays, which is very convenient;
flexibility. This property allows for quick installation of such products, even in hard-to-reach conditions. Such pipes bend at any angle;
installation by means of a nut connection, which does not require welding equipment and special knowledge in the field of construction;
presentable appearance;
resistance to negative temperatures;
resistance to water hammer in the system;
resistance to minor mechanical stress;
resistance to vibrations in the system;
abrasion resistance;
in addition, flexible stainless pipe for water supply is resistant to UV rays;
unlimited service life of communication from such pipes allows you to save on their replacement and repair work Oh. It is also worth noting that the fittings in such systems have a service life of at least 30 years.

Flexible steel pipes not afraid of high temperatures, this allows you to use them to connect water heaters

The main disadvantage of such products is a rather high cost, which is due to technical characteristics, as well as the cost of manufacturing materials. Steel itself is a fairly expensive material.

Main Features of Corrugated Stainless Pipe

As mentioned above, flexible corrugated pipes are resistant to corrosive influences, in addition, they have many unique characteristics. The pressure that such a pipe is able to withstand is 60 bar, which is almost 4 times higher than that of a conventional steel pipeline. The pressure indicator for drinking water pipes of an economic type, as a rule, is 7 bar.

Important! When purchasing such pipes, you must be careful and carefully check that there are no damages or defects on their surface.

The maximum temperature at which a corrugated stainless product can be operated is 110 ° C, and it is also not afraid of negative temperatures. Resistance to low temperatures due to design features stainless corrugated pipe. Corrugation compensates for water expansion at low temperatures.

The installation of such communication is simple and thanks to flexible pipes, structures with any configuration can be made. The fitting system allows installation without special tools. In addition, such a pipeline requires a smaller number of connecting elements than for a conventional one (from simple metal pipes).

Seals must be used when fitting steel corrugated pipes

Connection of stainless pipes

The installation of stainless corrugated pipes for water is carried out by connecting individual parts of the pipeline with special fittings. In addition to the fitting system, the joining of individual elements of a flexible stainless water supply can be carried out by other methods: pressure testing, welding and flange connections.

Pipeline installation by welding requires special welding equipment, as well as knowledge and skills in this area. Welding of stainless pipes can be carried out in an inert gas environment. This method requires the use of special tungsten electrodes. However, the most common method is the so-called plasma welding. In this case, the work is done by a directed plasma arc. Not every owner is able to independently perform this process without errors, so we will consider other popular methods that do not require special skills.

Pipe flanges are typically used in systems that require periodic preventive inspections and repairs. Such a connection allows you to quickly replace individual elements of communication. Flange connection is carried out without the use of threads.

Flange connections also have their drawbacks:

high metal content;
deterioration of sealing performance during temperature changes and water hammer.

Threaded connections of stainless flexible corrugated pipes are made using fittings. The most popular type of fitting is considered to be a coupling, through which two pipes are connected in a straight section of the pipeline. The fitting method of installation is the most popular because of its simplicity and high speed.

The threaded connection is the simplest and is produced very quickly.

However, care must be taken in the selection and installation of fittings. Such parts are detachable and in the event of a breakdown, the failed part can be easily replaced with a new one. Connecting stainless steel water pipes to plumbing equipment carried out using a special product - a stainless steel eyeliner.

Flexible stainless steel braided water hose

Previously, bulky structures were used to connect plumbing and other equipment, which were fastened together with clamps. This method was distinguished by the complexity of installation, as well as low reliability and, in addition, unpresentable appearance. Today there is a simpler and reliable way supply water to the toilet, boiler, washing machine or dishwasher. This method is connected with a flexible stainless steel hose. Such devices are very popular and are used everywhere.

Flexible water supply is a hose that can have different lengths (from 30 cm to 5 m). Both ends of such a hose are equipped with special pipes or nuts with rubber gaskets, as well as seals. Thanks to rubber seals, the desired sealing performance is achieved.

As a rule, water connections are made of stainless steel (flexible corrugated stainless steel water connection) or have a braid of this material. This is due to the fact that stainless steel is superior to other materials and has excellent anti-corrosion qualities, which are necessary when in contact with water.

Useful information! The purpose of such a hose is determined quite simply: the product for cold water has a blue thread in its braid, and the model that is used to connect hot water has a red one. Combined products are distinguished by the fact that they have threads of both colors in their braid.

One of the options for a flexible stainless liner is a steel braided hose.

Stainless steel hoses are used not only for household purposes. They are also in demand in other areas:

construction;
Agriculture;
mining industry.

The flexible stainless steel water connection is designed for harsh environments and is resistant to aggressive chemicals. Consider the basic requirements that such hoses must meet:

flexible piping should have good tightness, which is feasible with its proper installation;
the gasket material must be of very high quality and wear-resistant;
the nut must have a thread without marriage;
a special rubber seal must be present.

Selection of the optimal dimensions of the flexible hose

When choosing an eyeliner for a particular case, the following characteristics must be considered:

hose diameter. The cross-sectional indicators of a flexible water supply are determined taking into account the water consumption of a particular plumbing equipment. To connect the toilet, as a rule, use a hose with a cross section of 8 mm, for a sink - 10 mm, and for a bathtub 15 mm;
hose length. The length is determined on a case-by-case basis. The connected product should not be too tight or, on the contrary, should not sag too much, thereby forming a kink.

In case of incorrect installation of such a hose, it performance characteristics are declining. In addition, it is worth considering the material from which the hose is made. The service life of flexible hoses differs depending on the material of manufacture.

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Flexible water supply - where and how to use it

Flexible water supply - a means to connect plumbing to water communications, if it is difficult to install rigid pipes. There are two types of flexible water connections: metal braided rubber hoses and bellows hoses. Connection using flexible piping has become widespread. Installation does not require special devices and time-consuming, the installed equipment is reliable.

Flexible water hoses allow you to reliably connect the plumbing fixture to the water supply network in a limited space

Some advantages of flexible pipe

The use of flexible connections makes the water distribution system simple and not bulky. A simple connection does not preclude long-term operation. Flexible pipe can be from 20 cm to 5 m in length, its internal diameter is from ½ inch to 1½ inch. The use of a flexible hose for water supply allows:

get a tight connection;
save the interior space of the home by installing plumbing or household appliances;
if necessary, move the installed equipment, for example, a washing machine;
do not use when connecting household appliances or plumbing welding machine;
not be afraid of vibrations and minor damage;
do not be afraid of water hammer;
install the necessary machinery or equipment on your own, without resorting to the services of an outside specialist;

Having applied a flexible pipe, you can not worry that it will soon have to be changed. At correct installation and operation, it is reliable, looks attractive and will last a long time.

Materials for the manufacture of flexible piping

The eyeliner is an elastic hose. It is protected by a metal braid. Fasteners are installed at the ends of the hose. Simple design puts forward certain requirements for the details that made it up. A hose for a quality product is selected from soft, elastic, well-flexible rubber.

The hoses are equipped with fasteners, the installation of which does not cause difficulties.

It's important to know! Technical rubber has a rather pungent odor, does not bend well and quickly fails. Such products should not be used.

For the manufacture of braid can be used:

aluminum;
nylon;
stainless steel.

The aluminum-reinforced braid will allow the hose to be operated under pressure up to five atmospheres at a temperature of 80º C. Use is guaranteed for two to three years. In conditions high humidity aluminum is quickly destroyed, ceases to protect the hose.

Stainless steel braid is the most common. It is able to ensure the operation of the product for ten years at pressures up to 10 atmospheres and temperatures up to 95º C. Nylon braid extends the life of the pipe up to 15 years at temperatures up to 110º C and pressure rising to 20 atmospheres. Fittings, union nuts are made of stainless steel and nickel-plated brass.

What to look for when buying a product

It is necessary to purchase a hose for an eyeliner, based on its intended purpose, conditions of use. You should know the temperature of the water and the operating pressure in the system.

The purpose of the product is easy to determine by the color of the threads in the braid; if both blue and red are present, such a hose is considered universal

Colored ribbons woven into the braid are used in the marking:

red - for flexible hot water supply;
blue - for cold;
red and blue - universal purpose.

On eyeliners of inadequate quality, there are, as usual, no markings.

The technical specifications are printed on the label of the flexible water connection. The weight of the hose in the hand should be felt, excessive lightness indicates poor quality materials. A product with an aluminum braid can quickly accumulate condensation. The reinforcement will oxidize and collapse, and the connection will need to be replaced.

Fittings deserve special attention. The plastic ones won't last long. The fitting must be well crimped with a braid grip, with a stainless steel sleeve and a tube inserted to the end. Otherwise, the design may simply fall off. High-quality union nuts cannot be too light and thin, so as not to crack the rubber seals and cause leakage.

Important! It is unacceptable to connect gas pipes to the water supply. They contain toxic substances dangerous to the human body.

Rubber hoses with metal braid

The most common flexible water supply is a rubber hose with a metal braid. It is extremely easy to manufacture. This is one of the reasons for the relatively low cost of the product. Modern manufacturers use EPDM rubber as the material for the hose. It does not have a strong chemical odor, is non-toxic, and is suitable for drinking water.

Flexible hoses are used to connect mixers where there is no possibility of supplying a stationary pipe

Flexible water connections are most often used when connecting faucets. It is usually impossible to bring a stationary pipe to it. The flexible water supply hose can be easily connected to other household appliances: toilet bowl (urinal, bidet), washing machine, dishwasher, water heater. It is applicable wherever there is hot and/or cold water supply. The rubber hose for connection is very convenient, simple and practical.

Enhanced quality is different anti-vibration eyeliner. The hoses of such a product have an increased diameter compared to the standard ones. They are used when connecting devices equipped with household pumps. The use of a special rubber anti-vibration design can significantly reduce the level of noise and vibration in the water distribution network.

Advantages and disadvantages of a flexible water line in a reinforced braid

A stainless steel braided rubber hose is usually connected to a water heater, washing machine, dishwasher or toilet. It is designed for use within two to three years, provided that the water temperature does not exceed 90º C. Practice shows that flexible pipes serve a much longer period. Connecting a braided rubber hose to the heating system is irrational.

A flexible hose option is a reinforced hose

To undeniable advantages reinforced hoses for water supply should include:

flexibility (can be used when experiencing a clear lack of free space for installation);
significant strength of the materials used in the manufacture;
environmental friendliness, compliance with sanitary standards;
quick assembly with simple equipment;
Ease of installation without much effort
comparative cheapness.

The disadvantages of flexible hoses are inextricably linked with their advantages. Rubber, which provides flexibility, interacting with water, quickly becomes unusable. Frequent bending of the elastic metal braid accelerates its wear.

Bellows connection

Metal is used to make the bellows hose. Most often stainless steel. It looks like a corrugated sleeve. The increased reliability of the bellows flexible water supply was provided by the following technical characteristics:

high resistance to fractures and compressions, which do not lead to a violation of the shape and internal diameter;
withstands water hammer;
not subject to combustion;
the ability to work in an incredibly wide temperature range - from -50ºС to +250ºС;
resistance to oxidation under the influence of oxygen;
fast installation in cramped, uncomfortable conditions.

The bellows connection has many advantages over conventional braided hoses.

These properties allow the bellows hose to serve uninterruptedly for at least twenty-five years. Manufacturers give a thirty-year warranty on the fluoroplastic nuts used, as usual, when installing a bellows eyeliner.

It is recommended to use a bellows pipe in conditions of high pressure and elevated temperature, that is, for connecting radiators, water heaters, heated towel rails and other similar devices. Another parameter that determines the choice of bellows pipe is the lack of space for any other connections.

In addition to a simple bellows eyeliner, there is a more attractive, "folding" shape. It comes folded. The corrugation is not stretched, the sleeve takes up less space. And during installation, you just need to stretch it to the desired length.

Water connection installation

Before proceeding with the installation of the supply flexible pipes, you should carefully make sure that they are not damaged. Even an expensive and high-quality product could be damaged during transportation or during storage. After that, it is necessary to verify the completeness and integrity of the gasket set. When starting work, remember important rules flexible hose handling:

it cannot be pulled, so the required length is calculated in advance;
the eyeliner must not be twisted, deformation will make it unusable;
it is recommended to bend the metal flexible water supply according to the values specified in the product data sheet. The eyeliner cannot be bent more than 5-6 of its outer diameters;
give the desired configuration to the eyeliner before attaching the nuts;
do not bend the pipe closer than 7 cm to the union nut connected to the consumer;
for union nuts, take only flat gaskets;
it is better to twist the tips by hand. With an adjustable wrench, it will be enough to turn the tip after that, a maximum of one turn. Applying excessive force can easily damage the gasket.

When mounting the eyeliner, do not overtighten the nuts.

How to make your own eyeliner

For self-manufacturing flexible water pipes you will need:

flexible pipe, preferably stainless, of good quality;
pipe cutter;
roller;
nuts;
gaskets.

Using a pipe cutter, a pipe of the required length is cut. The resulting corrugated pipe is inserted into the roller with a ledge into two rings. It will take several hammer blows to roll each side of the pipe. When rolling flexible hoses from one inch in diameter, they should be fixed with a metal retaining ring. The manufactured metal flexible water inlet is completed with prefabricated gaskets.

It is desirable to match the inner diameter of the hose with the inner diameter of the pipes of the water supply system. With a smaller diameter of the liner, the available water flow will be reduced, otherwise, the pressure will drop sharply.

The ability to install a flexible water supply of different sizes and diameters greatly simplified the installation and use of plumbing and household appliances. A simple and reliable means of connecting to water communications attracts with its speed of installation in the most inconvenient places. It gracefully blends into the environment, bringing comfort and convenience.

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Flexible water connection 1, 3/4, 3/8 and 1/2 inches: characteristics

A flexible water supply will help you connect a faucet, toilet bowl, water heater and other plumbing fixtures even at the most inconvenient location. It will allow you to abandon rigid pipes that require a large number of connections, and do without calling the wizard. Let's find out how to choose and connect a flexible plumbing hose correctly, so as not to flood the neighbors later.

Types of flexible piping

For water use 2 types of eyeliner:

reinforced;
bellows.

reinforced

The flexible hose of the first type is a soft elastic hose reinforced with a wire braid, with connecting elements at the ends (fittings). The tube has complex structure despite its simple appearance. It is made from synthetic EPDM rubber or cross-linked PEX polyethylene. It is braided with a thread of wire made of stainless steel or aluminum. Reinforced eyeliner that will withstand higher pressure has a nylon braid.

The product is cut at the factory into parts of the required length. At the ends, metal nipples with fittings or union nuts are inserted into it. Then the braid with the hose is crimped with a steel sleeve around the sleeve. Connection to pipes is made through rubber seals.

The flexible water hose has different diameters: 1 and 1/2 inches, 3/4, 3/8.

Bellows

Bellows hoses are more reliable and durable. They are made in the form of alternating rings of different diameters from stainless steel. During production, the workpiece is selectively crimped, after which it receives a corrugated shape that provides high flexibility. The cost of such a hose is much higher.

The eyeliner is available in two types:

fixed length;
folding.

The first one does not stretch and has a certain size: 20, 30, 40, 50, 60, 70 and 80 cm. For the second, the range of minimum and maximum values is indicated: 140–250, 200–355 mm, etc. It is not recommended to get carried away with stretching, because this affects the life of the product.

The disadvantage of the bellows hose is the noise that occurs when water is supplied to several consumers at the same time, for example, to a faucet, toilet bowl and washing machine. To avoid it, it is recommended to purchase hoses with plastic coated.

Technical indicators

The main parameters of the water supply are pressure and temperature. Standard values pressure in different systems differ:

Centralized water supply - 4 atm.
Heating system private house - 1.5–3 atm.
Central heating - 2-4 atm.

In centralized water pipes, pressure fluctuations are characteristic, therefore it is recommended to choose the strength of the hose with a margin of 20-25%. The table shows the technical characteristics of flexible hoses with different braids.

Bellows eyeliner has higher rates, but here it is important who the manufacturer is. AQUAPROF hoses are designed for operating pressures up to 16 atm and temperatures up to 150 °C, while the GIANT variety of the same type has an increased capacity and withstands temperatures up to 250 °C.

How to choose a flexible eyeliner?

To choose the right hose, consider the following parameters.

The sleeve must be suitable for temperature and pressure. For example, a flexible connection to the toilet can be of any type, but only a hose for hot water is suitable for a boiler.
Braid material is selected based on operating conditions. In a room with poor ventilation, where condensation may occur, it is better not to use a product with a metal braid.

The reliability of the eyeliner depends on its flexibility. You can check it by taking one end and placing the hose horizontally. If it bends slightly, then elasticity (and, accordingly, reliability) is low.

The fittings are selected without defects, the sleeves must be pressed around the entire perimeter. The material for the manufacture of fittings is nickel-plated brass or stainless steel. For gas, aluminum is used, which is completely unsuitable for supplying water, as it quickly deteriorates in a humid environment.
Hoses for domestic water pipes should be made of high-quality rubber without a characteristic chemical odor.

The hose for cold water is marked with a blue braided tape, for hot - red. If the inserts have both colors, the product is universal. Cheap products do not have such markings.

The sleeve is equipped with union nuts or fittings of sufficient thickness and strength so that they do not crack when tightened. If the eyeliner is too light, then the fittings are made of silumin or plastic, and the braid is made of aluminum.

Reliable products are purchased in specialized stores in high-quality packaging and with marking and a certificate (GOST 6286-73). In the attached passport, you must find the expiration date. If it is less than 5 years old, we do not recommend taking such a hose.

The tips must fit the pipes to which the flexible hose is connected. The following combinations are possible: nut-fitting (female-male), nut-nut (female-female, as in the photo below), fitting-fitting (male-male).

After the service life declared by the manufacturer, the flexible hose must be replaced.

We focus on quality

To create durable products requires complex technology and high-quality materials. Handicraft production, which subsequently leads to accidents, is characterized by the following features:

Weak compression of the braid due to the lack of special equipment and the use of sleeves made of low-quality materials.
Low strength and corrosion of connecting elements.
Rapid aging of technical rubber from which hoses and gaskets are made.
The use of ordinary galvanized wire for braiding, the service life of which does not exceed 1 year.

Reliable products have an accompanying passport. High quality products last 10 years. If an aluminum braid is used, this value is reduced by a factor of 2. The stated period is often exceeded, so it is important to find a reliable manufacturer.

Italian and Spanish firms have proven themselves well. It is worth paying attention to anti-vibration models, which are distinguished by a large outer diameter. The equipment eliminates the hum in the pipes when using pumps. The cost of such an eyeliner is several times higher than that of the domestic one.

High-quality products with a large number of positive reviews are produced by the Russian companies Aquatechnika, Monolith, and Flexiline. Stainless steel bellows is produced under the German brand WITZENMANN and the Italian PARIGI. Some models are even suitable for heating systems. High quality bellows sleeves encased in plastic insulation.

Connection rules

The eyeliner in different systems is connected through mounting elements at the ends of the product - union nuts and fittings. The hose model is selected according to its length, type of connection and size of the mounting assembly. Fittings are available with a cross section from 0.5″ to 1.5″. The hose is attached freely, without tension. Otherwise, deformation of the pressed-in connecting fittings occurs.

With different diameters of the mixer and the pipeline, the inlet at one end is fixed through an adapter.

When installing, you must follow the connection rules (SNiP 2.04.01-85).

Before installation in the eyeliner, the fastening of the reinforcement at the ends is inspected, the presence of gaskets, the quality of the thread and braid are checked.
After installation, within half an hour, you need to check the joints: if there are any leaks. When drops appear at the joints, the nuts are tightened.
The bending radius should exceed the outer diameter by more than 5-6 times.
The hose is not stretched or twisted during installation.
When tightening, do not apply excessive force: the seal may be damaged. If there is no experience, tightening is done by hand, followed by a slight tightening with a key.
The hose does not withstand open flames or high temperatures.
Once every six months, the tightness of the fastening is checked and an external inspection of the eyeliner is performed.
To avoid electrochemical corrosion, pairs of the same metal are connected.
It is recommended to replace the eyeliner at least every 3-5 years.

When installing a flexible hose, it is prohibited:

Use it in continuous flow mode.
Install without gaskets or with mechanical damage.
Operate the product at negative temperatures.

Important conclusion + video

To connect plumbing metal pipes are used less and less. You can bring water with the help of convenient flexible devices that are easy to attach with your own hands. But you have to do it wisely.

Mr. Build recommends: take the choice and installation of a flexible type of eyeliner with all responsibility, change the sleeve regularly. Carefully monitor the condition of the hose, the integrity of the braid. The bursting eyeliner is the most common cause accidents with flooding of neighbors from below.

Before buying and installing, be sure to watch the videos below. From them you will learn:

how to choose the right product, what to look for;
what elastic eyeliner has weak spots;
where and how it is impossible to mount it;
how to install a flexible hose according to all the rules;
How do you know when it's time to change your eyeliner?

mr-build.com

Flexible connection for heating

The main element in a flexible eyeliner is a rubber hose. With the performance of high-quality eyeliner, this hose is made from completely non-toxic rubber of a special grade EPDM, this is the so-called ethylene-propylene rubber. This material, in case of contact with water, does not emit harmful substances and can be used for drinking water supply. It is also quite resistant to high temperatures, this property allows the use of eyeliner when installing heating appliances (up to +95 ° C).

The outer braid is the second most important element of the eyeliner. Flexible eyeliner provides the product with sufficiently high strength, in case of external mechanical influences, and hydraulic shocks from the inside. That is why, externally, the hose is braided with stainless steel thread, thanks to which the flexible water supply will reliably last for 10-12 years. A high-quality braid will allow the eyeliner to withstand pressure up to 10 atmospheres. If, on the outside, the protection of the braid is made of aluminum thread, then both the service life and the strength of the product will naturally be less.

The braid is also made of galvanized steel wire, it does not withstand the action of condensate, and subject to its constant formation, this eyeliner will last no more than a year. Another element is a brass fitting. To this fitting, with the help of a sleeve made of stainless steel, a completely braided rubber hose is attached. To install the eyeliner, mounting elements are used, these are union nuts or fittings.

Application of flexible water supply

The main application of flexible water supply is the connection of corrugated stainless steel pipe to household equipment and appliances that use water. For this purpose, there are two types of flexible hoses: fully rubberized hoses with a metal braid and bellows metal hoses, the use of these materials makes connecting equipment as simple and convenient as possible.

Metal-braided rubber hoses are the most common type of piping. Along with the “normal” piping, the category “metal-braided rubber hose” also includes an anti-vibration piping.

A flexible corrugated pipe or liner is, in fact, a universal material, if an accident occurs during the use of heating or plumbing systems, then in principle there will be nothing to worry about, but if something bad happens during the operation of a flexible gas liner, the consequences will be much more deplorable . But such accidents occur at a minimum, therefore, a flexible supply for heating or gas is made of sufficient quality to be used in absolutely any areas of increased danger.

Such a technically complex element as a universal flexible hose requires the use of only high-quality materials and modern qualified equipment. And the guarantee of quality when purchasing a flexible braid is the so-called accompanying passport.

Adjusting valve on the heating radiator principle of operation

Tsugunov Anton Valerievich

Reading time: 5 minutes

Types of flexible piping

For water use 2 types of eyeliner:

reinforced;
bellows.

reinforced

The flexible hose of the first type is a soft elastic hose reinforced with a wire braid, with connecting elements at the ends (fittings). The tube has a complex structure despite its simple appearance. It is made from synthetic EPDM rubber or cross-linked PEX polyethylene. It is braided with a thread of wire made of stainless steel or aluminum. Reinforced eyeliner that will withstand higher pressure has a nylon braid.

The flexible water hose has different diameters: 1 and 1/2 inches, 3/4, 3/8.

Bellows

The eyeliner is available in two types:

fixed length;
folding.

The disadvantage of the bellows hose is the noise that occurs when water is supplied to several consumers at the same time, for example, to a faucet, toilet bowl and washing machine. To avoid it, it is recommended to purchase hoses with a plastic coating.

Technical indicators

The main parameters of the water supply are pressure and temperature. Standard pressure values in different systems differ:

Centralized water supply - 4 atm.
Autonomous heating of a private house - 1.5–3 atm.
Central heating - 2-4 atm.

How to choose a flexible eyeliner?

To choose the right hose, consider the following parameters.

The sleeve must be suitable for temperature and pressure. For example, a flexible connection to the toilet can be of any type, but only a hose for hot water is suitable for a boiler.
Braid material is selected based on operating conditions. In a room with poor ventilation, where condensation may occur, it is better not to use a product with a metal braid.

The reliability of the eyeliner depends on its flexibility. You can check it by taking one end and placing the hose horizontally. If it bends slightly, then elasticity (and, accordingly, reliability) is low.

The fittings are selected without defects, the sleeves must be pressed around the entire perimeter. The material for the manufacture of fittings is nickel-plated brass or stainless steel. For gas, aluminum is used, which is completely unsuitable for supplying water, as it quickly deteriorates in a humid environment.
Hoses for domestic water pipes should be made of high-quality rubber without a characteristic chemical odor.

The hose for cold water is marked with a blue braided tape, for hot - red. If the inserts have both colors, the product is universal. Cheap products do not have such markings.

The sleeve is equipped with union nuts or fittings of sufficient thickness and strength so that they do not crack when tightened. If the eyeliner is too light, then the fittings are made of silumin or plastic, and the braid is made of aluminum.

Reliable products are purchased in specialized stores in high-quality packaging and with marking and a certificate (GOST 6286-73). In the attached passport, you must find the expiration date. If it is less than 5 years old, we do not recommend taking such a hose.

The tips must fit the pipes to which the flexible hose is connected. The following combinations are possible: nut-fitting (female-male), nut-nut (female-female, as in the photo below), fitting-fitting (male-male).

After the service life declared by the manufacturer, the flexible hose must be replaced.

We focus on quality

To create durable products requires complex technology and high-quality materials. Handicraft production, which subsequently leads to accidents, is characterized by the following features:

Weak compression of the braid due to the lack of special equipment and the use of sleeves made of low-quality materials.
Low strength and corrosion of connecting elements.
Rapid aging of technical rubber from which hoses and gaskets are made.
The use of ordinary galvanized wire for braiding, the service life of which does not exceed 1 year.

Reliable products have an accompanying passport. High quality products last 10 years. If an aluminum braid is used, this value is reduced by a factor of 2. The stated period is often exceeded, so it is important to find a reliable manufacturer.

Connection rules

With different diameters of the mixer and the pipeline, the inlet at one end is fixed through an adapter.

When installing, you must follow the connection rules (SNiP 2.04.01-85).

Before installation in the eyeliner, the fastening of the reinforcement at the ends is inspected, the presence of gaskets, the quality of the thread and braid are checked.
After installation, within half an hour, you need to check the joints: if there are any leaks. When drops appear at the joints, the nuts are tightened.
The bending radius should exceed the outer diameter by more than 5-6 times.
The hose is not stretched or twisted during installation.
When tightening, do not apply excessive force: the seal may be damaged. If there is no experience, tightening is done by hand, followed by a slight tightening with a key.
The hose does not withstand open flames or high temperatures.
Once every six months, the tightness of the fastening is checked and an external inspection of the eyeliner is performed.

Use it in continuous flow mode.
Install without gaskets or with mechanical damage.
Operate the product at negative temperatures.

Important conclusion + video

To connect plumbing, metal pipes are used less and less. You can bring water with the help of convenient flexible devices that are easy to attach with your own hands. But you have to do it wisely.

Mr. Build recommends: take the choice and installation of a flexible type of eyeliner with all responsibility, change the sleeve regularly. Carefully monitor the condition of the hose, the integrity of the braid. A bursting eyeliner is the most common cause of accidents with flooding of neighbors from below.

Before buying and installing, be sure to watch the videos below. From them you will learn:

how to choose the right product, what to look for;
what are the weak points of the elastic eyeliner;

In the era of modern building and plumbing materials, you no longer have to puzzle over how and where to place a convenient and discreet plumbing. The standard rigid pipes have been replaced by soft flexible hoses enclosed in a durable housing. These parts will last for many years, provided right choice and operation.

Peculiarities

Flexible eyeliner has a number of features, among which positive ones stand out easily. But the negative nuances should also be mentioned in order to avoid an unpleasant aftertaste, waste of time, effort and money.

Advantages of this flexible eyeliner:

full tightness and protection against leaks;
saving space, allowing you to install additional interior items or equipment without regard to bulky pipes;

ease of changing the location of an object connected with a flexible eyeliner;
refusal to use a welding machine;
protection of the hose from water hammer (in case a pressure surge occurs in the water supply, a high-quality flexible hose is protected from rupture and water leakage);
ease of installation and operation (all basic work can be done independently).

Flexible piping, as a rule, is used for various plumbing connections. Most often it is used in bathrooms (connection to the water of a toilet bowl, faucet, boiler) and in kitchens.

As for the negative ratings of the flexible hose, most often users complain about problems resulting from improper hose installation. To avoid this, experts advise to purchase goods only from a well-known manufacturer. Also, a thorough inspection of the product in the store (before you purchased it) will become a guarantee of a good quality purchase.

When choosing, you need to pay attention to several important points.

The weight of the eyeliner should not be lighter than a feather. If you picked up just such a product, immediately put it in its place. At best, this hose will last you a couple of weeks after installation.
Flexible eyeliner should easily bend in different directions. If you have to make an effort to change the shape of the hose, you can safely put it aside and take on another one, as this one is made of low-quality technical rubber, which can simply crumble from bends.

Another significant drawback is the short service life of the plastic fitting. To accurately choose exactly the right eyeliner, consider the main characteristics of this product.

Specifications

Today, there are two categories of flexible water pipes: extensions and adapters. The second are standard hoses that connect the necessary devices to the water supply: sinks, toilets, showers and boilers. Usually they have a length of up to 60 cm. Extensions are an auxiliary hose that connects to an adapter to provide water to the most remote areas.

The service life of any supply hose depends both on the starting quality of the product, and on the correct installation and operation of it.

When purchasing a flexible bathroom liner, pay attention to the presence of colored stripes on the reinforced surface:

red indicates the possibility of using only hot water;
blue can only be used in cold water conditions;
both stripes immediately indicate that the hose can be installed to supply both hot and cold water.

Thus, when connecting a faucet or toilet to places where only cold water, you can use all three types of flexible eyeliner. If we are talking about a mixer with two temperature modes, a boiler or a radiator, the use of hoses with a blue stripe is strictly prohibited here.

On sale there are also flexible eyeliners with a yellow stripe along the entire length of the hose. They are intended only for connecting users to the gas supply and have special impregnations and lubricants inside that are unacceptable for use with water, especially for drinking or washing. The water that has passed through this hose is considered technical and contains impurities that are hazardous to human health.

It is worth dwelling on the main types of flexible connections that exist today in the construction market.

Kinds

Modern manufacturers offer a wide range of connecting water pipes. Their classification is made according to the type of braid, internal filler (main tube), type, quality and size of fittings. Let's dwell on the most common division, based on the type of braid.

According to the indicated feature, flexible piping is:

reinforced;
bellows.

The first is a rubber base (quality products are made of durable rubber), covered with a steel braid. In this case, the casing of such a hose can be made of different materials. For example, galvanized steel and aluminum occupy a leading position among analogues. This is due to the low price - and nothing more. Such a braid is absolutely short-lived, it practically cannot withstand the average pressure of water in the water supply system and fails very quickly. This should not be, because the top skin of the rubber hose is designed to strengthen it and prevent water from escaping.

In terms of quality and durability, a braid made of durable stainless steel wire is considered the best. She provides reliable protection internal rubber hose. According to manufacturers, the operational period of such eyeliners reaches ten years or more.

Nylon braid is a reinforced water hose treatment that can withstand even the maximum pressure in the system.

By choosing a reinforced braid for flexible piping, you automatically receive the following benefits:

installation speed;
environmentally friendly manufacturing materials;
high strength;
flexibility.

The second type is an elastic stainless steel corrugation. Bellows hoses last longer and have better specifications.

There are two modifications of corrugated elements:

with a fixed length;
with variable dimensions.

For the first, manufacturers immediately determine standard sizes, starting from 20 cm and ending with 80 cm. The step in the length of the product is 10 cm. The second one has a floating range over which it can be stretched. For example, on sale you can find bellows eyeliners with a variable length of 150-250 mm, 200-350 mm and others. It is worth considering the fact that the maximum stretch is indicated for reference - it is undesirable to stretch the eyeliner by that much.

Quality, strength and durability are evidenced by the use of bellows hoses in industrial applications. Very often, this type of eyeliner is used when connecting sprinklers - ceiling fire extinguishing devices. The main nuance is the plumbing system. A sprinkler system is a network of pipes that constantly hold pressurized water. Therefore, the choice quality material eyeliner becomes very useful.

Among the shortcomings of the bellows flexible liner, its noisy operation during high pressure in the water supply system. Despite the fact that in modern apartment buildings this happens infrequently, some users recommend using it as little as possible on private property.

Fittings are usually supplied with flexible piping. Often these are brass fittings or nuts that have various forms and sizes. To choose the right mount, it is necessary to measure the diameters of the pipes in the room where the installation will be carried out.

Plumbing wiring used to be an ornate intricacies of pipes, tubules and adapters. But today, thanks to flexible piping, it has become possible to install devices that use water supply in the smallest rooms. Angled flexible hose ensures installation even in hard-to-reach places. Due to the peculiarity of its fastening, it can be located close to the wall and thus increase the usable area of the room.

Dimensions

The main parameters of flexible hoses are the diameter of the hose and its length. At the same time, the caliber is important not only in the tube, but also in fittings. For example, modern flexible hoses are produced with a maximum diameter of 1-2 inches. And the most commonly used ones have parameters in 1/2, 3/4 and 3/8.

As for the length of the reinforced or corrugated hose, each manufacturer has its own. In addition, it is almost individual for each individual case. If we consider a stationary eyeliner, then the maximum length is 60 cm. In corrugated sliding models, this indicator can only start at 500 mm and finish within 5000 mm. The latter are extremely rare, mainly on an industrial scale.

Manufacturers: review and reviews

The most popular today are flexible eyeliners made in Italy. They have proven themselves in the construction market, and many users are happy to note their advantages.

One of the most popular Italian trough brands today is Parigi. According to customer reviews, the products of this brand have high strength. The manufacturer guarantees the service life of reinforced flexible hoses from 3 to 5 years, while bellows products can last more than 7 years. Special attention Italians pay attention to detail: fittings and nuts are made of high quality nickel and have a service life of more than 10-15 years. Prices for products are high, which about 60% of users consider the main drawback.

Mateu- a Spanish manufacturing company that has established itself as a quality manufacturer of the middle price segment. In kitchen or bathroom faucet sets, you can often find flexible hoses with a metal braid from this particular company. They also produce large quantities of their own brand products for large construction hypermarkets.

Another feature of the Spanish manufacturer is the production of reinforced hoses using PEX hoses. According to the descriptions of professionals, this type of hose has a maximum service life, since they are made of cross-linked polyethylene. The operation of such material in some cases reaches 50 years. Another feature of the PEX hose is its versatility: flexible connections with such a base can be used to connect both complex devices (for example, heating systems), and more simple ones (cold and hot water supply).

The domestic plumbing industry also does not stand still. A large number of high-quality, but more affordable products are produced by manufacturers such as "Giant", "Monolith", "Aquatechnics". Users note a large number of advantages of these eyeliners. But still, approximately 50% of respondents insist on the inconsistency of some of the technical characteristics specified in the product passport, but in general they are satisfied with the purchase.

In order for each part to function correctly and for as long as possible, it is necessary to strictly follow the rules for connecting and installing elements. Despite the fact that even a high school student can cope with this process, some expert advice should be taken into account during installation.

Connection rules

Plumbing systems are connected to each other by means of special mounting fasteners. As mentioned earlier, these are fittings and nuts. The hose must be fastened freely, slightly sagging, therefore, when choosing a length, they rely on a large number. As for the fittings themselves, they come in different diameters (0.5-1.5 inches) and different shapes. If water pipe and eyeliners of different diameters, a special adapter comes to the rescue, which can be easily found in all plumbing stores.

Consider the basic rules for installing a flexible water supply.

Before installation, and even better before buying, make a complete inspection of the tips of the fittings (fasteners). Check if the gasket is in place, in what condition the thread and braid are.
After installation, it is necessary to connect the water supply to the system and within 30-40 minutes check the operation of the piping for leakage. If there is still a leak, try tightening the nuts a little tighter. But with this, too, you need not to overdo it, so as not to spoil the mount.
Bending of the hose is allowed in a ratio of not more than 5-6 diameters of the outer tube.

The hose is very afraid of high temperatures, so try to avoid using the product in unfavorable conditions for it.
Twice a year, it is imperative to check the tightness of the installation and inspect the external condition of the flexible piping.
In case of a shortage of hose length, you can purchase a special extension cord. Pairs of the same material must be used to avoid metal corrosion due to electromechanical reaction.
Despite the service life specified by the manufacturer, it is recommended to replace flexible hoses at least once every 3-5 years.

Among the prohibitions there are three immutable rules:

do not use in continuous flow mode;
do not install without gaskets or with visible defects;
do not operate at low negative temperatures.

The scope of flexible hoses is quite wide. One of the main rules here will be the appropriateness of their use in this particular situation. There are cases when such products were used to connect fan coil units - elements of the air conditioning and ventilation system. Any flexible reinforced or bellows fitting for water has a wide variety of attachments. In the language of professionals, they are called: “mother” - “mother”, “dad” - “mother”, “dad” - “dad”. "Mom" here is expressed with a union nut, and "dad" with a long fitting.

In the process of installing a flexible water supply, one cannot do without the recommendations and advice of specialists, especially if the installation is done by you yourself and for the first time.

Having decided on a flexible water supply, you risk, unfortunately, being faced with the purchase of a low-quality fake.

To prevent this from happening, here is a list of basic recommendations for acquiring a good product.

Buy only from trusted retail outlets and from reputable manufacturers.
Reliable products are always equipped with a passport describing the technical characteristics (for example, the maximum pressure and temperature in the system that this hose can withstand), the period and rules of operation. Quality models usually have a designated shelf life of up to 10 years.
In addition to the accompanying documents, each product has special markings indicating the same technical characteristics, manufacturer, diameter, and other things.
All official brands put only certified positions on the sanitary goods market.

Due to their design, bellows liners are usually noisy. But this can be avoided by purchasing such hoses with a special plastic coating.
Nickel-plated brass is the best material for union nuts and fittings, while aluminum or hybrid steel-aluminum components last three times less - no more than 3 years.
Sometimes, in the process of screwing the eyeliner, it may be twisted, unnecessary bending. Such moments should be avoided and the condition of the hose should be carefully monitored. Otherwise, this can lead to early abrasion of the rubber component and its rapid replacement.
When visually assessing the quality of a flexible hose, pay attention to the braid, which must be uniform, without burrs, protruding tails and other shortcomings, and the fittings must be well pressed.
The rubber gaskets included in the kit, as a rule, rarely serve their owner for a long time. Perhaps there is a need to purchase more durable silicone or paronite products.

How to make your own

Craftsmen easily share recipes for making flexible eyeliner with reinforced braid with their own hands.

One of the parts includes:

flexible stainless steel pipe;
device for cutting pipes;
roller;
nuts;
rubber or silicone gaskets.

The technology consists in cutting off the necessary piece of pipe, rolling both of its edges, fixing them with a retaining ring, stringing nuts and installing gaskets.

There is nothing difficult in the process of installing a flexible water supply, but there are a number of nuances to choose from necessary details. Therefore, carefully pay attention to all the little things even before making a payment for the product, so that you do not have to go back and buy a new eyeliner.

For the features of a flexible water supply, see the following video.

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Anti-vibration water inlet for large diameters. Flexible hose for water supply. Flexible stainless steel braided water hose