Hot pipe fistula. Welding water pipes under pressure

The formation of a fistula in a heating or plumbing riser, mounted from metal pipes, is not uncommon. The situation needs to be corrected as quickly as possible. Therefore, information on how to seal a fistula in the pipe and which of the ways to eliminate it are available will not be superfluous.

The presence of a red-colored build-up on the pipe, which is called pitting corrosion, indicates a problem and that the pipeline can break through at any time. Damage occurs as a result of partial destruction or general wear of the line, or under the influence of stray currents. When a fistula is detected, the reason for its appearance no longer matters, the main thing is to eliminate it as soon as possible.

A variety of ways to seal the fistula

To properly cope with the problem, first of all, you need to figure out what a fistula in the pipeline is. This is the hole in the pipe through which the water flows out.

There are several ways to fix it:

With a bolt;

Using a temporary bandage;

Using an adhesive bandage;

Cold welding method.

But at the same time, it is imperative to drain the water from the system by closing the valves and opening all the available taps.

Sealing the hole with a bolt

This option involves a number of actions:

1. Expand the fistula in the pipe with a drill.

2. Cut the thread with a tap.

3. Screw the bolt into the hole formed.

This method cannot be used when the pipes are too old, since it will be impossible to thread them, and attempts to do this usually end in an increase in the size of the leak.

Repair using a temporary bandage

This method is used when the fistula in the pipeline has an elongated elongated appearance.

A bandage is applied to the hole using gaskets, which can be made from the following products:

Medical tourniquet;

Thick glove;

Bicycle tire;

Boot shaft, etc.

The main thing is that the size of the rubber gasket is much larger than the size of the hole. To fix the bandage on the pipeline, clamps or bolts are used.

Sealing with adhesive bandage

Elimination of the fistula by this method is carried out in stages:

1. A metal brush is used to clean the pipeline from dirt, treat its surface with acetone or gasoline and take 15 minutes to dry.

2. Tapes are cut from the fiberglass, the length of which depends on the size of the pipe diameter - it is necessary that the winding has at least 6 layers. The width of the material must exceed the cross-section of the pipeline by at least one third.

3.BF-2 glue is applied to the edges of the tape, then one side of it is covered with an epoxy adhesive with a spatula.

4. The tool is firmly pressed against the glass cloth so that it is well saturated with glue.

5. Then the tape is tightly wound on a previously prepared surface so that its center covers the problem area.

6. The bandage is fastened with a metal tape.

7. After 24 hours it is allowed to use the repaired pipeline.

In the case when the system is laid in an unheated room, where the temperature does not exceed 17 degrees, the pipeline can be used only after 4 days.

Cold welding method

Repair of water pipes without welding is carried out using a special composition:

1. The hole is widened with a drill.

2. The surface of the pipeline is degreased and cleaned with acetone.

3. When the pipe is dry, a product called "cold welding" is applied to it and it is expected to fully harden - this usually takes about 10 minutes.

When using "cold welding" or epoxy adhesive, rubber gloves should be used. If the glue gets on the skin, remove it with cotton wool and acetone, and then wash your hands with warm water and soap.

Hole sealing process

When the system is worn out, it is advisable to prepare several clamps that have the same diameter as the pipeline. In addition, you need to stock up on rubber for them. In the event that a water pipe fistula appears at night, such preparation will not be superfluous, since the emergency team is unlikely to arrive in a matter of minutes.

If the hole is small, it can be closed using a conventional vehicle clamp:

1. A thin tape is cut from a piece of rubber - its width should be 2-4 millimeters more than the same parameter for the clamp. The length of the cut is measured by wrapping the material around the pipe. The excess piece of tape is cut off.

2. The clamp is opened and placed on the pipe, then it is not tightly gripped.

3. A rubber gasket is placed under the clamp and gently pushed to the place where the hole appears.

4. After covering the fistula, the clamp is tightened with a screwdriver or a wrench, depending on the features of the device of the tightening product.

If a very small fistula is found and there is no clamp at hand, the hole can be closed with the end of a match. But this method is rarely used, since it is rarely possible to eliminate the leak in old pipelines - it only increases in size. Even if the gap is successfully sealed with a match, it must be repaired as soon as possible with a clamp.

To eliminate a serious fistula on the hot water pipe, you will need a more powerful clamp:

1. First of all, the water is turned off and drained from the pipeline.

2. Before installing the clamp, carefully inspect the pipe. When its surface is uneven, it should be sanded to prevent fluid from flowing through the roughness.

3.Under the clamp, cut out a rubber pad and place it on the hole.

From the above information, it is clear that it is quite possible to eliminate the fistula in the pipe with your own hands - no special tools or special skills are required. If you have metal risers, you need to prepare several clamps and rubber gaskets.

The formation of a fistula in a heating or water supply riser, assembled from metal pipes, is not uncommon. The situation needs to be corrected as quickly as possible. Therefore, information on how to seal a fistula in the pipe and which of the ways to eliminate it are available will not be superfluous.

The presence of a red-colored build-up on the pipe, which is called pitting corrosion, indicates a problem and that the pipeline may break at any time (read also: ""). Damage occurs as a result of partial destruction or general wear of the line, or under the influence of stray currents. When a fistula is detected, the reason for its appearance no longer matters, the main thing is to eliminate it as soon as possible.

A variety of ways to seal the fistula

To properly cope with the problem, first of all, you need to figure out what a fistula in the pipeline is. This is the hole in the pipe through which the water flows out.

There are several ways to fix it:

• with a bolt;
• using a temporary bandage;
• using an adhesive bandage;
• by cold welding.

But at the same time, it is imperative to drain the water from the system by closing the valves and opening all the available taps.

Sealing the hole with a bolt

This option involves a number of actions:

1. Expand the fistula in the pipe with a drill.
2. Cut the thread with a tap.
3. Screw the bolt into the hole formed.

This method cannot be used when the pipes are too old, since it will be impossible to thread them, and attempts to do this usually end in an increase in the size of the leak.

Repair using a temporary bandage

This method is used when the fistula in the pipeline has an elongated elongated appearance.

A bandage is applied to the hole using gaskets, which can be made from the following products:

• medical tourniquet;
• thick glove;
• bicycle tire;
• bootleg, etc.

The main thing is that the size of the rubber gasket is much larger than the size of the hole. To fix the bandage on the pipeline, clamps or bolts are used.

Sealing with adhesive bandage

Elimination of the fistula by this method is carried out in stages:

1. They clean the pipeline from dirt with a metal brush, treat its surface with acetone or gasoline and take 15 minutes to dry.
2. Tapes are cut from the fiberglass, the length of which depends on the size of the pipe diameter - it is necessary that the winding has at least 6 layers. The width of the material must exceed the cross-section of the pipeline by at least one third.
3. BF-2 glue is applied to the edges of the tape, then one side is covered with an epoxy adhesive with a spatula.
4. The tool is firmly pressed against the fiberglass so that it is well saturated with glue.
5. Then the tape is wound tightly on a previously prepared surface so that its center covers the problem area.
6. The bandage is fastened with a metal tape.
7. After 24 hours, it is allowed to use the repaired pipeline.

In the case when the system is laid in an unheated room, where the temperature does not exceed 17 degrees, the pipeline can be used only after 4 days.

Cold welding method

Repair of water pipes without welding is carried out using a special composition:

1. The hole is widened with a drill.
2. The surface of the pipeline is degreased and cleaned with acetone.
3. When the pipe is dry, a product called "cold welding" is applied to it and waited for it to completely harden - usually it takes about 10 minutes.

When using "cold welding" or epoxy adhesive, rubber gloves should be used. If the glue gets on the skin, remove it with cotton wool and acetone, and then wash your hands with warm water and soap.

Hole sealing process

When the system is worn out, it is advisable to prepare several clamps that have the same diameter as the pipeline. In addition, you need to stock up on rubber for them. In the event that a water pipe fistula appears at night, such preparation will not be superfluous, since the emergency team is unlikely to arrive in a matter of minutes.

If the hole is small, it can be closed using a conventional vehicle clamp:

1. A thin tape is cut from a piece of rubber - its width should be 2-4 millimeters more than the same parameter for the clamp. The length of the cut is measured by wrapping the material around the pipe. The excess piece of tape is cut off.
2. The clamp is opened and placed on the pipe, then it is not tightly gripped.
3. A rubber gasket is placed under the clamp and gently pushed to the place where the hole appears.
4. After covering the fistula, the clamp is tightened with a screwdriver or a key, depending on the characteristics of the device of the tightening product.

If a very small fistula is found and there is no clamp at hand, the hole can be closed with the end of a match. But this method is rarely used, since it is rarely possible to eliminate the leak in old pipelines - it only increases in size. Even if the gap is successfully sealed with a match, it must be repaired as soon as possible with a clamp.

To eliminate a serious fistula on the hot water pipe, you will need a more powerful clamp:

1. First of all, they turn off the water and drain it from the pipeline.
2. Before installing the clamp, carefully inspect the pipe. When its surface is uneven, it should be sanded to prevent fluid from flowing through the roughness.
3. A rubber pad is cut out under the clamp and placed on the hole.

From the above information, it is clear that it is quite possible to eliminate the fistula in the pipe with your own hands - no special tools or special skills are required. If you have metal risers, you need to prepare several clamps and rubber gaskets.

Fistula. What is it? This term refers to the deformation on the pipe in the form of a hole. The main reason for its appearance is considered to be chiseled corrosion. This is a clear sign that the plumbing structure is worn out and needs to be replaced. However, not always a person can immediately carry out a full range of work to replace the system with a new one. In this case, it is required to perform partial repairs to eliminate the fistula. It is worth remembering that such repairs are temporary, they do not eliminate the need to replace worn-out pipes. To carry out the work, you can call the wizard, but you can do them yourself.

Tools and materials

In order to eliminate the fistula, you need to stock up on the following tools and materials:

• Drill;
• Bolt set;
• Special adhesive composition BV-2;
• Metal brush;
• Epoxy adhesive;
• Petrol;
• Tap;
• Acetone;
• Kern;
• Putty knife.

Before removing the fistula, it is necessary to drain the water from the system. For this purpose, it is required to close the stop valve. Then all the taps open.

How to fix a defect with a bolt

First you need to expand the fistula. This is done with a drill. The tap is used to cut threaded elements. The bolt is screwed into the widened hole. It is worth noting that these repairs are recommended to be performed only if the pipes are not badly worn out. If the structure is old, it is unlikely that it will be possible to make high-quality carvings on it. This will only increase the defect.

How to eliminate a defect with a bandage

This type of repair work is best performed if an elongated fistula has formed on the structure. In order to seal it, a bandage with a rubber seal is applied. A seal can be made from rubber gloves, an unnecessary tire from a bicycle, a medical tourniquet, a piece of rubber boots. The size of the seal should be larger than the volume of the defect in the pipe. Such a gasket is attached to the structure by means of clamps or a bolt.

How to seal a hole with an adhesive bandage

To begin with, the pipe is cleaned with a metal brush. Then it is processed with acetone or gasoline. The wait is about 15 minutes. At this time, you can start cutting fiberglass into equal parts. The optimal dimensions of such belts are in direct proportion to the size of the pipes. The tape is cut correctly if it is possible to wrap the structure with it at least six times. The width of the segment should be three times the diameter of the structure. BV-2 adhesive is applied to the edges of the fiberglass segments. Then, on one side of the segment, an epoxy adhesive is spread using a spatula. It should saturate the cut well. For this, during the application of the glue, the spatula must be well pressed against the surface of the tape. Then it is wrapped around the structure. The middle of the segment should fall on the area where the fistula formed. The bandage is pulled together by means of a metal tape. The structure is left for a day. If it is located in a cold room, it will take at least 4 days to wait until the system is operational.

We eliminate the defect by "cold welding"

The defect should be expanded with a drill. Then the structure is cleaned of contamination, treated with acetone. Wait until the structure is dry, and then apply the "cold welding" compound to it. It dries up within ten minutes.

Caution: Wear rubber gloves if you use cold weld or epoxy for repair work. The glue should not come into contact with the skin. If it does get on the skin, it should be immediately removed with cotton wool soaked in acetone, and then the area where the glue turned out to be washed well with warm water and soap.

In conclusion, we can say that the listed methods, which make it possible to seal the hole in the pipes, give only a temporary result. We recommend that you replace the water supply system with a new one. People who do not allow the structure to wear out do not even know that this is a fistula.

One of the most common problems in a metal riser for water supply and heating is the formation of a fistula.

Most often, a fistula appears on hot water pipes. It is quite simple to define this problem: in the place where the fistula forms, a red build-up or pitting corrosion appears.

The cause of the appearance of a fistula on a metal pipe is wear. However, when this problem arises, it is necessary to think not about the reasons, but about rational ways to avoid a pipe break.

Before proceeding with the solution of the problem that has arisen, it is necessary to drain the water from the system by closing the stop valve and opening all the taps. After that, you can choose one of the acceptable methods.

Method one: sealing the fistula with a bolt

This method is not suitable for old pipes, as it involves threading, and old pipes are not suitable for this operation, which can simply increase the diameter of the resulting leak. If you are planning to repair new pipes, then you have to do the following:

• take a drill and expand the fistula;
• make a thread with a tap;
• screw the bolt into the threaded hole.

Method two: installation of a temporary bandage

This method is intended for sealing an oblong fistula. To apply a bandage, you need to stock up on a rubber gasket, which can be made from available tools: rubber from a boot, a tourniquet, a tire or thick rubber gloves.

In size, such a pad should be larger than the fistula. To secure the gasket tightly to the pipe, either bolts or special clamps can be used.

Method three: elimination of the fistula with an adhesive bandage

In this case, the work process consists of several stages.

First step. Clean the surface of the riser from dirt using a metal brush. Then treat it with gasoline. Allow the pipe to dry after processing. This will take fifteen minutes.

Second phase. Take fiberglass and cut into strips. The size of the segments should be such that one strip can wrap the pipe six times. And the width of the tape should be one third larger than the diameter of the installed pipe.

Stage three. Treat the edge of the resulting strip with BF-2 glue. Then apply epoxy glue to one side with a spatula. The glue should completely saturate the material.

Fourth stage. After that, a tape is wound around the water pipe, the central part of which should completely cover the place of damage.

Fifth stage. The resulting bandage must be pulled together and secured with a strip of metal tape.

It is important to remember that you can use the pipe after repair in one day if it is located in a warm room. If the temperature in the room does not exceed seventeen degrees Celsius, then the riser can be operated only after four days.

Method four: cold welding and repair of the fistula

Cold welding is also used to temporarily seal the fistula. In this case, it is necessary to make the fistula wider with a drill, treat the pipe with acetone, having previously cleaned it, and apply the prepared composition, which will harden in ten minutes.

What to do with the old pipe?

Old pipes can also be cleaned of fistulas with clamps, the diameter of which must match the diameter of the pipe. In addition, it is necessary to cut the rubber bands, which will be placed under the clamps.

This method is very convenient to use when the fistula appears suddenly at the wrong time of the day. In order not to flood the neighbors before the arrival of the emergency team, it is this design that is best used.

If the fistula is small, a standard-sized car clamp will do. The repair process is as follows:

• cut out the rubber tape. Its width should be either three to four millimeters larger than the damage site, or equal to it. The length is determined by wrapping the tape around the pipe;
• we open the clamp and put it on the damaged place;
• lightly grab the clamp and insert the cut out rubber gasket, carefully bringing it to the place where the fistula formed;
• we close the damaged area and fasten the clamp with a key or screwdriver.

If the damage is large, then a clamp of the appropriate size will be required. To install it, it is necessary to drain the water from the pipes, after turning off the water supply.

Before installing the clamp, it is necessary to find out the condition of the pipe. All irregularities must be cleaned with sandpaper, otherwise water will ooze along the resulting irregularities. Then the clamp is installed in the manner described above.

In principle, sealing a fistula in a metal pipe is not very difficult. This task can be easily accomplished with the most common tools and materials at hand. Experienced craftsmen recommend preparing the necessary materials in advance if you have metal risers installed in your apartment or house. Then no leak will catch you off guard.

The formation of a fistula in a heating or water supply riser, assembled from metal pipes, is not uncommon. The situation needs to be corrected as quickly as possible. Therefore, information on how to seal a fistula in the pipe and which of the ways to eliminate it are available will not be superfluous.

The presence of a red-colored build-up on the pipe, which is called pitting corrosion, indicates a problem and that the pipeline can break at any time (read also: "What to do if a pipe bursts and how to prevent it"). Damage occurs as a result of partial destruction or general wear of the line, or under the influence of stray currents. When a fistula is detected, the reason for its appearance no longer matters, the main thing is to eliminate it as soon as possible.

• with a bolt;
• using a temporary bandage;
• using an adhesive bandage;
• by cold welding.

Sealing the hole with a bolt

1. Expand the fistula in the pipe with a drill.
2. Cut the thread with a tap.
3. Screw the bolt into the hole formed.

• medical tourniquet;
• thick glove;
• bicycle tire;
• bootleg, etc.

Sealing with adhesive bandage

1. They clean the pipeline from dirt with a metal brush, treat its surface with acetone or gasoline and take 15 minutes to dry.
2. Tapes are cut from the fiberglass, the length of which depends on the size of the pipe diameter - it is necessary that the winding has at least 6 layers. The width of the material must exceed the cross-section of the pipeline by at least one third.
3. BF-2 glue is applied to the edges of the tape, then one side is covered with an epoxy adhesive with a spatula.
4. The tool is firmly pressed against the fiberglass so that it is well saturated with glue.
5. Then the tape is wound tightly on a previously prepared surface so that its center covers the problem area.
6. The bandage is fastened with a metal tape.
7. After 24 hours, it is allowed to use the repaired pipeline.

Cold welding method

1. The hole is widened with a drill.
2. The surface of the pipeline is degreased and cleaned with acetone.
3. When the pipe is dry, a product called "cold welding" is applied to it and waited for it to completely harden - usually it takes about 10 minutes.

Hole sealing process

1. A thin tape is cut from a piece of rubber - its width should be 2-4 millimeters more than the same parameter for the clamp. The length of the cut is measured by wrapping the material around the pipe. The excess piece of tape is cut off.
2. The clamp is opened and placed on the pipe, then it is not tightly gripped.
3. A rubber gasket is placed under the clamp and gently pushed to the place where the hole appears.
4. After covering the fistula, the clamp is tightened with a screwdriver or a key, depending on the characteristics of the device of the tightening product.

1. First of all, they turn off the water and drain it from the pipeline.
2. Before installing the clamp, carefully inspect the pipe. When its surface is uneven, it should be sanded to prevent fluid from flowing through the roughness.
3. A rubber pad is cut out under the clamp and placed on the hole.

trubaspec.com

Different ways to seal the fistula in the pipeline - SamStroy

The formation of a fistula in a heating or plumbing riser, mounted from metal pipes, is not uncommon. The situation needs to be corrected as quickly as possible. Therefore, information on how to seal a fistula in the pipe and which of the ways to eliminate it are available will not be superfluous.

The presence of a red-colored build-up on the pipe, which is called pitting corrosion, indicates a problem and that the pipeline can break through at any time. Damage occurs as a result of partial destruction or general wear of the line, or under the influence of stray currents. When a fistula is detected, the reason for its appearance no longer matters, the main thing is to eliminate it as soon as possible.

A variety of ways to seal the fistula

To properly cope with the problem, first of all, you need to figure out what a fistula in the pipeline is. This is the hole in the pipe through which the water flows out.

There are several ways to fix it:

With a bolt;

Using a temporary bandage;

Using an adhesive bandage;

Cold welding method.

But at the same time, it is imperative to drain the water from the system by closing the valves and opening all the available taps.

Sealing the hole with a bolt

This option involves a number of actions:

1. Expand the fistula in the pipe with a drill.

2. Cut the thread with a tap.

3. Screw the bolt into the hole formed.

This method cannot be used when the pipes are too old, since it will be impossible to thread them, and attempts to do this usually end in an increase in the size of the leak.

Repair using a temporary bandage

This method is used when the fistula in the pipeline has an elongated elongated appearance.

A bandage is applied to the hole using gaskets, which can be made from the following products:

Medical tourniquet;

Thick glove;

Bicycle tire;

Boot shaft, etc.

The main thing is that the size of the rubber gasket is much larger than the size of the hole. To fix the bandage on the pipeline, clamps or bolts are used.

Sealing with adhesive bandage

Elimination of the fistula by this method is carried out in stages:

1. A metal brush is used to clean the pipeline from dirt, treat its surface with acetone or gasoline and take 15 minutes to dry.

2. Tapes are cut from the fiberglass, the length of which depends on the size of the pipe diameter - it is necessary that the winding has at least 6 layers. The width of the material must exceed the cross-section of the pipeline by at least one third.

3.BF-2 glue is applied to the edges of the tape, then one side of it is covered with an epoxy adhesive with a spatula.

4. The tool is firmly pressed against the glass cloth so that it is well saturated with glue.

5. Then the tape is tightly wound on a previously prepared surface so that its center covers the problem area.

6. The bandage is fastened with a metal tape.

7. After 24 hours it is allowed to use the repaired pipeline.

In the case when the system is laid in an unheated room, where the temperature does not exceed 17 degrees, the pipeline can be used only after 4 days.

Cold welding method

Repair of water pipes without welding is carried out using a special composition:

1. The hole is widened with a drill.

2. The surface of the pipeline is degreased and cleaned with acetone.

3. When the pipe is dry, a product called "cold welding" is applied to it and it is expected to fully harden - this usually takes about 10 minutes.

When using "cold welding" or epoxy adhesive, rubber gloves should be used. If the glue gets on the skin, remove it with cotton wool and acetone, and then wash your hands with warm water and soap.

Hole sealing process

When the system is worn out, it is advisable to prepare several clamps that have the same diameter as the pipeline. In addition, you need to stock up on rubber for them. In the event that a water pipe fistula appears at night, such preparation will not be superfluous, since the emergency team is unlikely to arrive in a matter of minutes.

If the hole is small, it can be closed using a conventional vehicle clamp:

1. A thin tape is cut from a piece of rubber - its width should be 2-4 millimeters more than the same parameter for the clamp. The length of the cut is measured by wrapping the material around the pipe. The excess piece of tape is cut off.

2. The clamp is opened and placed on the pipe, then it is not tightly gripped.

3. A rubber gasket is placed under the clamp and gently pushed to the place where the hole appears.

4. After covering the fistula, the clamp is tightened with a screwdriver or a wrench, depending on the features of the device of the tightening product.

If a very small fistula is found and there is no clamp at hand, the hole can be closed with the end of a match. But this method is rarely used, since it is rarely possible to eliminate the leak in old pipelines - it only increases in size. Even if the gap is successfully sealed with a match, it must be repaired as soon as possible with a clamp.

To eliminate a serious fistula on the hot water pipe, you will need a more powerful clamp:

1. First of all, the water is turned off and drained from the pipeline.

2. Before installing the clamp, carefully inspect the pipe. When its surface is uneven, it should be sanded to prevent fluid from flowing through the roughness.

3.Under the clamp, cut out a rubber pad and place it on the hole.

From the above information, it is clear that it is quite possible to eliminate the fistula in the pipe with your own hands - no special tools or special skills are required. If you have metal risers, you need to prepare several clamps and rubber gaskets.

samstroy.com

Formation of fistulas in the pipe

Sometimes it happens that in the hot water pipes that have worked for a short service life (a year and a half, sometimes less), microscopic holes are already formed, the so-called. "fistulas" through which water begins to flow out under pressure. What could be the cause There are two factors that can affect the formation of fistulas.

First, the quality of the pipe itself plays an important role, whether it is made according to GOST (in our case, according to GOST 3262-75 "STEEL WATER AND GAS PIPES. TECHNICAL CONDITIONS"), here, the main thing is chemical. composition of steel with inclusions of harmful impurities and compliance with the pipe wall thickness. On the inner surface of defective pipes, sometimes there are mushroom-shaped influxes of metal, which, with the pressure of water, can break off and form depressions and holes.

Secondly, the effect is exerted by internal corrosion; hot water DHW is a weak but aggressive medium. According to clause 13.1. SNiP 41-02-2003 "Heating networks", when choosing methods of protecting pipes, one should take into account the main parameters of network water, such as: water hardness, pH ph, the content of sulfates and chlorides, organic impurities, oxygen and free carbonic acid in the water.

13.1 When choosing a method of protecting steel pipes of heating networks from internal corrosion and schemes for the preparation of makeup water, the following main parameters of the supply water should be taken into account: water hardness; pH pH; content of oxygen and free carbonic acid in water; content of sulfates and chlorides; content in water organic impurities (water oxidizability).

This should be taken into account, when operating heating networks, to protect pipes from internal corrosion, in accordance with clause 13.2. SNiP 41-02-2003 "Heating networks". It can be done by increasing the pH (within the recommendations of the PTE), reducing the oxygen content in the network water, coating the inner surface of steel pipes with anti-corrosion compounds or using corrosion-resistant steels, using a reagent-free electrochemical method of water treatment, using water treatment and deaeration of make-up water, using corrosion inhibitors ...

13.2 The protection of pipes from internal corrosion should be carried out by: increasing the pH, within the limits of the PTE recommendations; reducing the oxygen content in the network water; coating the inner surface of steel pipes with anti-corrosion compounds or using corrosion-resistant steels; using a non-reagent electrochemical method of water treatment; using water treatment and deaeration makeup water; the use of corrosion inhibitors.

With increased corrosion, fistulas will form, first of all, in places where there is a local decrease in the thickness of the wall or depression, and in places with inhomogeneous chemical. composition. To control internal corrosion, in accordance with SNiP 41-02-2003 "Heating networks" clause 13.3 ,. provision should be made for the installation of corrosion indicators.

13.3 To control internal corrosion on the supply and return pipelines of water heating networks, at the outputs from the heat source, and, in the most characteristic places, it is necessary to provide for the installation of corrosion indicators.

It should be noted that, although rarely, stray currents that somehow pass through the pipe can lead to an increased degree of corrosion.

sklerometr.ru

How to repair a fistula in a pressurized pipe in a plumbing and heating system

The article below will help you independently resolve the issue of sealing fistulas on pipes. The problem of how to seal a fistula in a pipe under pressure is really very urgent.

After all, a leak in the pipes of the water supply, heating, drainage can occur at the most inopportune moment, and it must be solved quickly and efficiently.

First of all, you need to understand that all the proposed tips are interesting, but, unfortunately, they are not long-term, and the results in the future can be much more "deplorable".

They are not only not expensive, but also easy to install. Their installation is not complicated, and it is easy to carry out it yourself.

Small scale “breakthrough” is implied when talking about leak repair techniques. If the water breaks through with a fountain, then there is only one way out - replacing the pipeline.

Fistula is called pitting corrosion, which is formed from partial destruction of the material, or from general old age. The result is a hole through which fluid flows outward.

An external visual manifestation of the fistula is swollen paint and rust build-ups. Seeing such a build-up, one should not rush to rip it off, because the size of the damage under it is not predictable.

In general, patching up pitting is not a difficult job, but nevertheless, you also need to seriously prepare for it.

For such events, you will need (experts say that you must always have it at hand):

• Clamp (a couple of pieces).
• Rubber pads (they can be easily made from any materials at hand, such as old boots, thick rubber gloves, bicycle tires, and so on).
• Screwdriver and bolts.
• Epoxy materials.
• Degreasing liquid.
• Emery.
• Cold welding.

See also - how to seal a leak in the heating pipeline: elimination methods

The causes of fistula

The reasons for the appearance of fistulas on a water pipe are most often reduced to one denominator. This is the effect of corrosion.

The most suitable temperature indicator for corrosive formations is +15 degrees. Most often, pipe-rolling materials in this mode are in the spring, summer and autumn periods.

It also accelerates corrosion damage and water located in the system. Over time, inside metal pipelines, rust builds up.

Every year the metal in such items becomes more and more thinner. And then the moment comes when corrosion breaks through the wall completely. The result is a leak.

When a small fistula occurs, the water slowly flows down the pipeline, where a puddle subsequently forms.

It is necessary to eliminate this problem immediately, without waiting until it turns into a big nuisance. If the leak is small, it can be repaired under pressure without shutting off the water supply.

Leaks in various systems

A fistula in a hot water pipe or any other system that consists of metal pipes can be quickly repaired in the following ways:

Option 1. Medical bandage and cement solution. It is cut into pieces, soaked in a previously prepared cement mortar. These bandages are wound around the leakage zone, forming a structure similar to a cocoon.

Finally, the resulting structure is also covered with a cement mortar. It dries up in about one day.

Option 2. Pieces of rubber. The rubber is cut into strips. Each of them should be slightly longer than the circumference of the pipe.

Option 3. Salt and bandage. Typically, this method is used to seal leaks under pressure in couplings, elbows, etc. The leaking area is wrapped with a bandage mixed with salt.

When dissolved, the salt fixes the microleakage. If we compare this method of sealing under pressure, then it is immediately worth noting that it is not as reliable as the first two.

Option 4. Bandage. This method can be used for pipes under pressure. The bandage is one of the oldest and most proven options. A small car clamp can be used for fistula up to 0.005 cm in volume.

For the clamp, a strip of rubber is cut out, a couple of millimeters wider than the clamp itself. The length of the strip should be one centimeter shorter than the circumference of the pipeline. The clamp is put on the pipeline, and a rubber gasket is placed under it.

This whole structure is obliged to completely cover the fistula. Then the clamp is tightened. With these measures, the surface at the place of corrosion must be cleaned.

Video: ways how to close a fistula

It should not contain irregularities. If this is not done, then the liquid will pass through the band in the area of ​​uneven areas.

Sealing a fistula in plastic pipelines

How to eliminate a fistula in a water pipe if it is made of plastic. Pipe-rolling plastic materials have recently been used very often.

They quickly replaced conventional steel products due to a wide range of positive characteristics. These materials are not only easy to install, but also easy to repair when fistulas appear.

You can seal a leak on a plastic workpiece by using couplings and fittings (part of the line is changed). In this case, a new section of pipe with a cut thread is harvested.

By means of connecting elements, it is installed in the place of a site that has become unusable. If you are not sure that all actions have been performed correctly, then you can seek advice from a professional master.

After inspecting the structure, he will give an exact answer whether it is suitable for use, or advise a complete replacement of the damaged pipe.

This method can be applied not only to plastic pipes, but also to metal ones. Only it is impossible to perform the elimination of the fistula in this way under pressure. We'll have to worry about turning off the water in the plumbing system.

In order for the water pressure (find out the optimal values ​​for the water supply system) does not interfere with the repair, it is necessary to turn off the main valve. It is usually installed in a toilet.

Video: eliminating water leaks using affordable methods

How to weld a fistula in a pipeline with water

How to weld a fistula in a plastic pipe with water can be learned from the method that is attached below.

Unlike the previous version, which could be applied not only for plastic products, this method is only suitable for working with PP pipe-rolling materials.

Actions are carried out using a special tool for soldering plastic - an iron. This tool melts the prepared components and fixes them after cooling down.

To repair minor damage to the site, all remedial actions can be carried out under pressure.

But, for an education that is significant in size, the water supply system will have to be shut off, since it will be impossible to weld the defect under pressure.

Anyone can work with the iron. No special experience is required for this. An instruction is attached to such devices, where the whole process of work is described step by step.

After carefully reading it, you can safely start repairing the PP pipeline. It is not difficult to brew a leak in this way.

Features of hot water supply

Fistula in the hot water pipe appears more often than in other places. The place that is most susceptible to this phenomenon is the riser. The first signs of danger in such a system are rusty build-up.

Video: how to seal a leak on a squeegee

It has already been written above that if a decision is made to close up the leak, then this build-up cannot be torn off. In the case of hot water supply, such actions can lead to serious burns.

Such a fistula in the pipeline can be closed by means of a bolt or a temporary bandage. And in the first and in the second case, it is impossible to act under pressure. The water supply must be shut off, only then can work be done.

A small leak can be repaired under pressure using an adhesive bandage. The edges of fiberglass with applied BF-2 glue are applied to the damaged area (the tape is applied very tightly). At the end, the tape must be pulled together with a metal tape. Such a section will be able to function under pressure only after 24 hours.

Also in this situation, you can seal the leak with "cold welding". It is better not to do such work under pressure. The resulting hole is slightly enlarged with a drill, and the area is degreased.

When everything dries up, a composition is applied to the flowing gap. It should freeze completely. This takes about ten minutes.

If we consider the sources of water supply in private areas, then wells can be called the most promising. Compared to wells, they contain water of a higher quality. It practically does not need cleaning and additional filtration.

During the operation of the well, the pump and water lifting pipelines vibrate. This leads to a weakening of the joints on the water-lifting lines, and, accordingly, leaks (fistulas) appear. This often results in serious accidents.

The well is operating with vibration of the riser pipe due to the pumping equipment, and this provokes a weakening of the joints. As a result of the appearance of a fistula, the functioning of the well can be completely disrupted.

Many owners of private houses try to carry out repairs and eliminate such leaks on their own, but experts strongly recommend that you trust this to professionals.

Such repairs cost a lot of money, but they fully justify themselves. Well workover operations involve a number of complex operations that require special equipment.

Non-professional craftsmen may not be able to do this work. You can clean the well yourself, replace the pump. And carrying out these events will also require a certain skill in this matter.

Also, craftsmen without experience and knowledge, who decide to patch up the "hole", need to keep in mind the following information.

Illiterate work can result in fatal results for the well. For example, it is impossible to extract scrap, which was accidentally lowered during embedding into the well. And such a loss for amateurs who decided to do everything on their own is very frequent.

Video: replacing a pressure tap

IMPORTANT! Well service technicians say that flushing a well is a mandatory annual event. It can be omitted only for wells that are constantly in operation.

Equally important is the fact that specialists will immediately establish the true cause of the problem. And this will make it possible to close up leaks and avoid unnecessary unnecessary costs. Plus, all the work will be done as soon as possible.

Now how to close a fistula in a pipe under pressure is clear. Having carefully studied the proposed options, you can quickly fix this unpleasant problem.