Do-it-yourself high-pressure hose repair

= Repair of high pressure hoses =
I decided to make a series of projects on the topic = DO YOURSELF =. I want to show some devices that can be used to make various repairs with high quality and for a long time, sometimes even those that it would seem that it is simply not possible to do it at home. But everything is done by human hands, you just have to want to do it. In my works, I will show the equipment and devices that I made myself for my work, but even if it is not so beautiful aesthetically, but in terms of work parameters, it has completely satisfied me for many years now.

Video Do it yourself Repair of high pressure hoses of the Petr Zhurba channel

High pressure hoses are used in pneumatic and hydraulic structures. In the automotive industry, they are widely used in steering. Thanks to the built-in hydraulic booster, the driver has the opportunity not to apply significant load on the steering wheel when cornering.

However, under certain operating conditions, various deformations of the tubes or sleeves are possible. Subsequently, this leads to unstable operation of the unit, which can be corrected by repairing the high-pressure hoses of the power steering with your own hands or with the help of specialists at the service station.

Hoses, which are more commonly referred to as high-pressure hoses, are flexible pipelines, for which the main task is to pump working fluids. Specially prepared motor oils or working fluids based on mineral oils, aqueous solutions of emulsols, glycol, and also greases are used as the transported material.

It is difficult to imagine the operation of a hydraulic booster without high-quality flexible hoses that can withstand the required pressure and an extensive pipeline system. In addition to the direct responsibility for pumping the working fluid, such hoses act as dampers (compensators) that increase the operating period of the connecting elements, fittings, fittings and the system as a whole.

Vibration absorption by flexible elements contributes to these results. The negative side of the phenomenon is that periodic replacement or repair of the power steering hoses in worn areas is required. After all all scuffs or kinks will soon lead to the tube leaking.

In addition to working under high pressure, the hydraulic booster hose must have a reduced susceptibility to the used working fluids. Thanks to this, its inner surface is made on the basis of oil-resistant and petrol-resistant synthetic rubber.

The outer surface is protected by layers of wear-resistant rubber. Under certain circumstances, this layer plays the role of thermal protection. It can have the following surfaces:

The outer and inner layers are separated by a metal braid. This gives the entire structure the required operational strength and admissible rigidity. Wire layers alternate with rubberized elements.

It is customary to separate the following types of hoses:

• Coiling... During the manufacture of this product, the turns of the wire are braided evenly around the entire perimeter.
• Braiding... Each turn covers the sleeve at a certain angle to the common axis so that it crosses with the turns of the previous layers. This technology increases the strength of the structure and can operate at higher pressures than the previous type.

The frame for the sleeve in some models is textiles. The geometrical and physicochemical parameters of wire and rubber are standardized for various applications.

Motorists may encounter different types of hydraulic damage during operation, after which the power steering hoses need to be repaired. You can designate the following points:

1. Manufacturer's marriage... The peculiarity is typical for under-known manufacturers of hydraulic equipment. Breakage is characterized by poor-quality crimping of the sleeve or fitting joint. This happens when hardware is out of order or misconfigured.
2. Operational output... Damage is caused by wear during the operation of the mechanism. The main problems are cord breaks, cuts and frayed areas. This often occurs due to sagging of the hose due to the wrong length.
3. Structural inconsistencies... Failure occurs due to the installation of equipment that does not meet the characteristics specified by the automaker. In such situations, the wire may break or the fittings may break due to the mismatch of the pressure in the system with the permissible value for the hose.
4. Disagreement in temperature or chemical characteristics... Damage to the structure can occur during operation at ambient temperatures for which such rubber was not designed, as well as during the use of aggressive chemicals in the structure of the working fluid.

Damage to the power steering hoses

All characteristics and permissible operating parameters for each hose are indicated by the manufacturer in the instructions for use.

Hydraulic malfunctions with which the further operation of the vehicle is not recommended:

• fittings are significantly damaged by corrosion processes;
• significant break in the sleeve;
• significant abrasion of the outer part of the hose;
• the presence of complete or partial blockage inside the sleeves;
• lack of sealing of connections;
• stripping the fitting from the bore diameter;
• fluid leakage at the joints;
• deformation or damage to the inner surface from high pressure or excess temperature.

In all cases, sleeve replacement or repair is required.

Based on the nature of possible damage, it can be assumed that the most common repair of power steering hoses is to tidy up the fittings or replace individual parts of the hose. To carry out the replacement, crimps with couplings will be required.

DIY repair tools

The work algorithm can be as follows:

1. The damaged sleeve must be disconnected from the system.
2. The new hose will need to be the same length to avoid creating unnecessary sagging. Measurement is carried out from nipple to nipple. At the same time, we select a hose that satisfies all geometric data and pressure parameters. This will be helped by the marking indicated by the manufacturer on the outside. The inner diameter will also be indicated there.
3. When repairing a high pressure hose, the ends are stripped both outside and inside to a metal braid. The procedure is faster with the use of debarkers.
4. Fittings are selected according to geometric parameters and technological thread data. Measurements are easy with a caliper and thread gauge. Domestic and foreign fittings may differ among themselves according to several criteria, so it is better to carry out measurements yourself.
5. The fittings are crimped using crimping equipment, using in each case suitable removable cams.
6. Using the control probe, we determine the quality of the work performed. At specialized factories, this operation is carried out using special industrial stands.

For non-standard connections, repair kits with recommended fittings must be used. It is possible to detach the head of the old fitting, if it is not damaged, and solder it to the part to be crimped.This option is used in extreme cases, since the effect of this repair is short-lived.

Hose damage in most cases occurs due to frequent turning of the steering wheel with great effort. Wear occurs at the hose connected to the restriction valve.

When installing and repairing power steering hoses, it is necessary to take into account that the permissible pressure in the system can vary depending on the car models in the range of 80 ... 130 kgf / cm 2.

Such significant performance indicators do not allow the use of any types of clamps during repairs. You must choose the most appropriate option:

1. Complete sleeve replacement.
2. Partial replacement of a deformed or worn-out area with the installation of fittings on a new sleeve.

Replacing and installing a new hose is carried out according to the following points:

• using a lift or jack, the front axle must be raised;
• the steering wheel is turned to the left as much as possible;
• a tube is put on the end of the medical syringe for pumping out the residual working fluid from the tank;
• after pumping out, the hose must be disconnected and the hydraulic holes must be plugged;
• a new sleeve with operating permissible characteristics is selected so that the operational characteristics of the unit do not change;
• in place of the old hose, a new one is mounted, after which the working fluid is poured into the system.

If the work is carried out correctly, the hydraulics are fully operational.

A real man should be the master of the house!

Modern cars that are supplied to the market are increasingly equipped with a power steering system. The hydraulic booster is part of the steering mechanism and makes it easier to control the vehicle. The driver does not have to put in a lot of effort when turning the steering wheel. For the stable operation of the hydraulic system, it is important to ensure a constant and free flow of the working fluid between the constituent elements inside - this task is solved with the help of special hoses. Over time, this structural part fails.

The Lenhydravlika company offers its assistance in the replacement of connecting elements. All work is performed by experienced MAZDA service specialists (address: St. Petersburg, Bobruiskaya st., 11). Our clients expect good discounts on services. Alternatively, car owners can also repair the power steering high pressure hoses with their own hands.

Flexible tubes included in the power steering structure are called high-pressure hoses. Elements play an important role in the operation of a hydraulic structure. Through the hoses, liquids and gases pumped into the system are transported. In addition, high pressure hoses absorb vibrations, increasing the service life of the steering elements.

Hose connections are subject to significant stress. In addition to mechanical deformations and bends, the tubes of the power steering system are tested by high pressure, temperature drops, and withstand the aggressive effects of chemicals, on the basis of which automobile fluids are produced.

The service life of the pipes largely depends on their quality and the reliability of the connecting fittings. Hose construction includes inner and outer layers, as well as a metal braid. The outer part of the tubes is made of thermally stable, wear-resistant rubber. The inner surface of the hose is synthetic rubber. The braid gives the hose extra strength, allowing it to be safely used in extreme conditions.

The masters name a number of reasons why the connection hose needs to be repaired:

1. 1. Poor crimp quality or defective tube.
2. 2. Inadequacy of the parameters of the installed hose to the conditions of use (too high pressure, violation of the temperature regime, incorrect choice of the length of the product).
3. 3.Damage caused by prolonged operation of the RVD (hose leaks as a result of a break or cut, corrosion processes and a violation of the sealing of connections, abrasion of the surface).

A malfunction of the high pressure hose is indicated by hum and extraneous noise when the pump is turned on, a decrease in the level of liquid in the tank of the car, and unclear steering. Before carrying out repairs, it is important to accurately determine the place and nature of the damage to the high pressure hose - you can do this yourself or contact the MAZDA service specialists for help. Professionals in the auto repair shop will perform the work efficiently and inexpensively.

Each car owner closely monitors the technical condition of his steel "horse", because the safety of its operation depends on it. Worn or damaged power steering hoses are a common cause of breakdown and malfunctioning steering. Regardless of the nature of the problem, it is solved in two ways - full or partial replacement of the RVD. The pressure level in the power steering system is quite high - 70 to 130 kgf / cm2. At these rates, hose clamps cannot be used to secure the hoses. It is also not recommended to solder fittings to hoses that are subject to high stress - this can only be used as a temporary measure.

When planning to carry out a complete replacement of the hose of the high pressure hose with your own hands, adhere to the scheme:

• - Raise the front of the car and turn the steering wheel to the left as far as it will go.
• - Put the end of the hose onto the syringe and pump out the technical liquid from the tank.
• - Plug the holes in the control system after complete dismantling of the high pressure hose.
• - Select a new part with suitable parameters and replace it.
• - Top up the required volume of pumped-out liquid back.

In some situations, it will not be necessary to replace, but to repair the hose (RVD) with your own hands. Subject to certain rules and the presence of a tool, it is easy to perform such manipulations:

• - Disconnect the damaged hose, carefully measure it and look at the markings. When selecting new hoses, be sure to match the parameters.
• - The ends of the hoses are thoroughly cleaned inside and outside to braiding using a debarking machine.
• - Select reliable and suitable fittings - fittings.

- Fastening of fittings to the sleeve is carried out by means of crimping equipment.

- Check the quality of the work done.

Care, accuracy and strict adherence to the instructions will allow you to quickly and efficiently repair the power steering high-pressure hoses with your own hands. But if you have any questions or difficulties in the process of work, be sure to contact the specialists of our car service. Extensive work experience allows you to replace the high pressure hoses in the shortest possible time.

1. Prepare the required high pressure hose (HPH), coupling and fitting (Fig. 1.).
   Rice. 1. Sleeve, sleeve and fitting
2. Using a non-abrasive steel rotary blade (see cut-off equipment), cut the hose to the required length (Fig. 2).

Additionally: how to correctly measure the RVD of the required length.

Rice. 2. Cutting high pressure hose

There are several meanings of the word Union... One of them means fitting as detail, having at least one thread and serving to connect other products to various tanks and pipelines. The shape of the second end is determined by the method of attachment to subsequent elements.

Connecting includes hose fittings (GOST 22792-83), used to connect various pipe sections of different diameters

1. Includes two components: hose connection and bushing. The nipple inserted into the hose is squeezed using a sleeve. This method is widely used on major highways, as well as in personal use.
2. With the integral method, the sleeve and the union form a single piece. This connection method is used for gas appliances and high pressure pipes.
3. Twisting method.

When using welded connections, only one side of the union (GOST 16045-70) is made with a thread, into which a pipe or valve is screwed, and the other side, left without a thread, is welded to the container or pipeline. Manufactured from alloy steel grade 12Х18Н9Т (Х18Н9Т).

Swivel union (hydraulic hinge) is used to produce a rotatable connection (GOST 25681-83).Material: stainless steel, aluminum.

Reducing fittings (GOST 21856-78) are designed to change from one thread pattern to another.

1. Flanged, steel, flat, welded; designed for a pressure of 0.6-25 MPa, temperatures from -70 to 300 g.
2. Flanged, steel, butt weld; pressure 0.6-16 MPa, at a temperature of -70 + 600 gr.
3. Thick-walled, one-piece forged, straight; pressure 1.6-16 MPa, temperature -70 + 600 g
4. With a thickened branch pipe, with a butt-welded flange; pressure 1.6-16MPa, temp. -70 + 600 gr.
5. One-piece forged with a neck; pressure 6,3-16MPa, temp. -70 + 600 gr.

In dictionaries, something else is often found the meaning of the term fitting - a rifled gun with loading through the barrel, as well as a type of weapon for hunting.

At any enterprise (factories, factories), competent air supply is of great importance, as well as water cooling, which is necessary in any technological process.

For these purposes, special systems equipped with fans are used. Various pumps and fans are a do-it-yourself crimping machine to stabilize the temperature process in production. Special machines control the consumption of electrical energy and absorb the noise effect.

At any trade enterprise that sells food products, scales are used. Modern scales are an automatic device that accurately measures the weight of the goods. The device is equipped with a display, as well as a special keyboard, due to which the cultivator sangarden t 240 attachments determines and displays the necessary information for the seller and the client. The balance can be operated from the mains, or charged from a battery (portable version).

In any office or enterprise, with the help of special devices, the optimal air temperature and air exchange are maintained. This is necessary to organize a comfortable workflow. Among the varieties of devices, the laundry equipment of Cherepovets is used: hoods, air conditioners of various modifications, ventilation shafts with natural and artificial cooling. Ventilation is exhaust, supply and mechanical.

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At enterprises engaged in the production of food products, various machines are used that provide an automated process of work. The installed automatics can be classified into used trade equipment of Cheboksary according to certain criteria. These are different groups of machines that differ in their functions. All technological operations can be classified according to the principle of the work performed, according to the device and methods of execution.

Enterprises that produce semi-finished products for sale in food supermarkets are equipped with special refrigeration units. Freezers represent a bracelet weaving on a machine, with the help of which finished products are stored for a certain time in warehouses. In freezers, ready-made semi-finished products are fed through a special conveyor, which are equipped with a spiral belt.

Currently, the market offers a wide range of domestic and imported equipment using high-pressure hoses, respectively, the demand for this type of equipment is constantly growing.

Unfortunately, the market is not always filled with high-quality products, which predetermines the likelihood of a malfunction of the high pressure hose.

Like any equipment, high-pressure hoses are also subject to wear; both the rubber itself and the end fittings can fail.RVD repair will cost significantly less than its manufacture, and, moreover, it will save time.

The Uralrezinotekhnika company carries out absolutely all technological operations for the repair of high-pressure hoses. High-precision equipment, high-quality raw materials, professional craftsmen - these are the components that provide a guarantee that your high pressure hoses will serve for many years to come.

• replacement of end connecting fittings (fittings);
• increasing or decreasing the length of the hose;
• RVD connection at the rupture site using a repair connector;

One of the areas of our work is the repair of power steering hoses (power steering) for all car models. Leakage of power steering fluid or other hydraulic systems in a vehicle is in most cases caused by a damaged or ruptured high pressure hose. The repair includes the replacement of the rubber part of the power steering, the connecting fittings remain standard. Thanks to the accumulated experience, we carry out all the work on the manufacture of power steering hoses as soon as possible.

The high pressure hose is a “risk group” part of a car wash that gets repaired more often than many other parts. They are more often subjected to serious mechanical stress, bend, fall under the wheels of a car, and break. The Uralrezinotekhnika company repairs high-pressure hoses for household and professional washing equipment - our specialists will professionally replace the torn section of the sleeve, extend or shorten the sleeve, replace the failed handpieces.

If the hose is torn off the flange, then the damaged section of the hose must be cut evenly, to the point where there are no extensions, cracks and an undamaged cord.

Next, purchase the necessary flange and install it - fortunately, a large number of them are sold in auto stores and there is also a choice. The flange is inserted into the hose and simply crimps well with the help of the vise jaw and hammer blows from the third top side.

If the damage is somewhere along the length of the hose, for example, a cut, rupture or something else, then we do it in the same way as in the first case, cut the hose and cut it to a whole, but here the connector of the required diameter and a pair of clamps will help - only buy clamps not cheap, but good ones like those in the photo!

Repairing a high pressure hose on a Karcher is an almost hopeless business. If it is damaged in a straight section, crushed, chopped, and so on, then finding a double-sided Christmas tree pipe and squeezing it at home on a hose is very problematic. You can do without buying a new (very expensive) hose only if it starts to rip off the metal outlet. That is, the thread on the union coupling has been torn off, and I don’t want to buy a new hose. Russian artisans do this:

A section of a rectangular pipe, in my opinion, 45x25, is taken, the “STAPLE” grip is carefully and thoughtfully cut out of it. With slots for the hose itself and for the branch pipe. I think it will be clearer in the photo. I repeat - if you don't want to buy a new hose at all.

The design of the product, of course, is not a museum, but it works properly. The connection may be slightly undermining, but this is not critical.

• Repair of high pressure hoses
• Damage to high pressure hoses
• How are high pressure hoses repaired?
• Power steering hose repair

High pressure hoses, which are more commonly called high pressure hoses or high pressure hoses, are designed to absorb or create working forces that, under the influence of high pressure, are transmitted through the liquids or gases injected into them. High pressure hoses are mainly used in hydraulic and pneumatic systems and mechanisms. In addition to industrial production, high pressure hoses are also found in road transport - in power steering and in high-pressure hydraulic pumps, for example,the most common Kӓrcher brand in our country.

The causes of rupture and cracks in high pressure hoses can be divided into several types:

1. Defect of the manufacturer. Often this is a poorly made crimping of the joint of a hose and a fitting due to the use of low-quality or unfinished equipment.

2. Damage received during the operation of the main mechanism. They occur as cuts and tears in the hoses. The most common reason for this is sagging high pressure hoses due to incorrect lengths.

3. Damage resulting from inadequacy of the parameters of the hoses to the operating conditions. This can be either a failure of a fitting or a rupture of the hose. As a result, the pressure exceeds the allowable pressure for which the hose itself is designed.

4. Damage to the outer layer arising from the use of the hose in the wrong temperature regime, for which the hose is not designed to work.

It's important to know! For maximum protection of high-pressure hoses from possible damage, it is necessary to seriously check their characteristics and parameters for compliance with operating conditions. First of all, this is the calculated value of the maximum allowable pressure, temperature and minimum bend of the hose.

TO the most common damage to high pressure hoses include the following:

1. Corrosion-prone fittings.

2. RVD break.

3. Abrasion and wear on the upper layer of the sleeve.

4. Blockage in the hose.

5. Leakage of the fitting connection.

6. Fitting stripping from the sleeve.

7. Leaking fitting connection.

8. Damage to the inner rubber layer due to high temperatures.

From all of the above, we can summarize that the repair of high pressure hoses consists in replacing fittings or certain damaged sections of the high pressure hose. Carrying out a replacement, both in the first and in the second version, it will be necessary to crimp the coupling. Technologically, in both cases, these actions are almost identical. The sequence of actions is as follows:

1. The damaged hose must be disconnected from the main mechanism.

2. Cut the new sleeve to the same size as the old one. For measurement, it is necessary to take the distance between the end ends of the nipples. It is better to choose a hose designed for the maximum possible pressure in the system, or at least one that will withstand heavy loads than a replaceable one. When choosing the required diameter, follow the markings on the sleeves. The factory marking DN indicates the inner bore diameter of the hose.

3. If you have to repair a heavy hose that is designed to withstand increased pressure, its ends must be cleaned from the inside and outside to a metal braid. This procedure is best done on debarkers.

4. Next, select the necessary fittings. This can cause some inconvenience, due to the fact that imported parts can be manufactured according to completely different standards. If you have any difficulty, it is better to measure the old fitting with a caliper and a thread gauge. This will allow you to most accurately select the necessary parameters of the new fitting according to the tables.

5. Next, you need to crimp the fittings on a crimping machine. Removable jaws are individually matched to each diameter.

6. Then be sure to check the quality of the procedure performed using the control probe. Ideally, testing should be done on a specially equipped test bench. If the connection is non-standard, a repair fitting is used. To do this, take the head of the old fitting and solder the part to be crimped. This method is suitable for emergency repair of power steering hoses.

The high-pressure hoses for the power steering are damaged mainly when the steering wheel is rotated, during which serious forces are generated.As a result, deformation of the elastic element occurs, which changes the size of the holes in the distribution mechanism that regulates the pressure drops in the hydraulic cylinder. There is a wear of the power steering hose connected to the restrictive valve.

This element is designed for a certain pressure, which varies depending on the make and model of the car: from 70 to 130 kgf / cm2. With such a high pressure, repairing a damaged power steering hose with clamps or wire is simply impossible. A couple of options remain: either replace the entire power steering tube, or only its damaged parts, by installing the fittings on a new hose.

Replacing and installing a new hose power steering is carried out as follows:

1. Jack up the front of the vehicle.

2. Turn the steering wheel all the way to the left.

3. Put a tube from the power steering tank on a syringe with a needle and pump out all the liquid.

4. Then disconnect the hose and plug the working holes of the hydraulic system.

5. Carefully observing all parameters, select a new hose. Otherwise, the functional qualities of the power steering will change.

6. Install a new hose, refill the fluid and check the quality of the installation.

High pressure hoses (HPH) are an integral part of the hydraulic systems of modern machines. RVD is responsible for the uninterrupted and stable operation of all interconnected mechanisms. Therefore, the timely replacement of failed high-pressure hoses guarantees the further operability of the machines as a whole. In this regard, the manufacture and repair of high pressure hoses can be regarded as a stable and promising business.

RVD are flexible pipelines for transportation between consumers of special hydraulic fluids, engine oils, fuel under pressure, for the transmission of working force. High pressure hoses are key elements of any hydraulic system of machines and mechanisms. The high performance requirements are imposed on the high pressure hoses. They are made of two or more rubber tubes nested inside each other, reinforced with a metal braid or winding, equipped with connecting fittings.

The basic device of the RVD

High pressure hoses are used in professional hydraulic equipment, industrial and construction machines (tractors, bulldozers, lifts, motor graders), agricultural machinery, railway equipment, material handling equipment and other devices. The retail price of ready-made hose assemblies from the manufacturer of the equipment is very high compared to those manufactured locally. Therefore, the manufacture of such sleeves is presented as a well-established business with a steady demand.

For the manufacture of high-pressure hoses, ready-made reinforced hoses of various diameters are used. A hose is cut from them to the required length, the places for the installation of the fitting-connections are cleaned, and the connecting elements are installed by pressing.

RVD repair, as a rule, consists in replacing the damaged (leaking) section of the hose. It is advisable to carry out repairs when its cost is much lower than the cost of manufacturing a new RVD.

All production and repair processes are applied using special machines. The machines are automatic, mechanized or manual.

The minimum set of equipment for the production of high pressure hoses should include:

This set of equipment is enough for the opening and full-fledged work of a small workshop for the manufacture of high-pressure hoses. The total cost of such a set is 250-1000 thousand rubles. But, most of the start-up capital will need to be spent on the purchase of consumables (coils of hoses for high pressure hoses, fittings, couplings, etc.) and equipment for machines (rollers, cutters, etc.). In the future, expanding your own business, you can equip the workshop with additional and repair machines. To do this, you need to purchase:

• Equipment for cleaning high pressure hoses - it is necessary for flushing / purging the inner part of the high-pressure hose to ensure its cleanliness and problem-free further operation.
• RVD pre-assembly machines - pneumatic or mechanical equipment that provides accurate pre-installation of the fitting and couplings on the high pressure hose. Such equipment makes it possible to reduce the number of rejects in the manufacture of high pressure hoses and to increase the reliability of finished hoses.
• Equipment for punching high pressure hoses - high-pressure hoses can be used to transport not only liquids, but also gases - oxygen, nitrogen. The transfer of gaseous media in conventional high pressure hoses causes the hose to delaminate, resulting in swelling and bump formation, which reduces the operating characteristics of the hoses. To prevent this from happening, the sleeve is perforated along its entire length with special equipment. Of course, you can use ready-made hoses, but they are much more expensive, and the number of orders for such high pressure hoses is minimal. Therefore, it is better to have equipment on hand than a whole bundle of perforated hose.
• Test benches - equipment that allows you to check various RVD. Without such a stand, it is impossible to carry out "troubleshooting" of finished high-pressure hoses. That will not allow revealing a marriage in a new RVD. Or he will not be able to find a place for repair at the damaged RVD.

Also, modern manufacturers of equipment for the manufacture and repair of high pressure hoses offer multifunctional universal machines. They perform a number of operations without the use of additional equipment. Cutting, blowing, stripping and pressure testing is a standard set of demanded functions of such universal equipment for the production of high pressure hoses. It is these machines that are recommended for use in small workshops.

The manufacture of high pressure hoses in such workshops allows you to save at least 30% of the cost of ready-made (branded) high-pressure hoses. Everyone who uses these hoses knows about it. Therefore, the demand for the services of such workshops is high. That guarantees stable demand and high profitability of the enterprise. According to experts in this field, the organization of a workshop for the manufacture and repair of high pressure hoses can pay off in 6-10 months.

Questions, messages about errors or typos in this article, please leave in the comments.

During the operation of hydraulic systems, pipelines are subject to significant stress. Keeping them in good working order is an important aspect of operating hydraulic equipment. High pressure hoses (HPH) are the main part of the hydraulic system pipeline, and their repair is required quite often.

Repair of high-pressure hoses is necessary for such damage:

• Corrosion of fittings
• Broken hose
• Wear on the outer layer of the sleeve
• Blockage
• Fitting failure
• Loss of tightness of the connection

The following causes of damage are distinguished:

• Marriage. It can be allowed in the manufacture of the sleeve, although poor-quality crimping is more common. This is especially true when the manufacture or repair of high pressure hoses was carried out in artisanal conditions or on poorly debugged equipment.
• Incorrect length. This leads to sagging or excessive tension on the sleeve, which is dangerous by the formation of cuts and tears.
• High blood pressure. If you use a RVD to transfer a liquid or gas of a higher pressure than it is designed, then the fitting will break or the hose will rupture.
• Cavitation. Occurs when the hydraulic systems are not working properly. Will cause rapid erosion of metal fittings.
• Incorrect temperature conditions. As a result, the outer layer of the RVD becomes unusable.

If the RVD fails, there are two options - its repair or replacement. It makes sense in the repair of high pressure hose hoses when individual elements - a hose or fittings are operational or are unique products that cannot be replaced.Only specialists can determine the possibility of repair, since the RVD may contain hidden damage, which will certainly appear when working with high pressure.

For the repair of high-pressure hoses in Moscow, the same technologies are used as in production. It differs only in the presence of such a stage as disassembling the product.