Change of sewerage from pig-iron to plastic, for owners of perennial buildings is a very relevant topic. The old canalization of cast iron becomes worn out, unusable. It often clogs. From an aesthetic point of view, cast iron constructions also do not please. Now, this work has become very popular due to the fact that a large number of buildings and their communications are approaching the end of the operational period. Therefore, the replacement sewer pipes  from pig iron to plastic will be the right decision, if you decide to start repair.

Important!  Dismantling of sewerage from cast-iron pipes is considered sanitary engineering works of high complexity. Specialists need a lot of experience working with electrical equipment and unquestioning compliance with safety rules. Before taking on the job yourself, conduct a sober assessment of your capabilities. In the case of a failed job, you will flood the neighbors from the bottom, and probably not at all with clean water. You can damage your hands, ruin your eyes, and make a fire.

How to replace the sewage system and avoid problems with neighbors? The the best option  will agree with the neighbors on replacing the entire riser. Perhaps it will be very difficult and time-consuming. But, this will be the most effective option. Neighbors living under and above you are introduced into the course of the matter, no one is offended. They are more willing to react to temporary difficulties. When you decide to replace only in your apartment, you will still be forced to talk to the occupants of the entrance. First, on the plumbing work, and after, on the verification of the correct functioning of the system.

Dismantling

The work will start from the riser. The tube is filed at a distance of about 0.6 meters from the floor and 0.1 meters from the ceiling. Cutting is not continuous, but divided into two, narrow jumper. Later it is broken with a hammer, and the cut out pipe is removed. It is very difficult to accomplish this task alone. It is necessary that one worker breaks the jumper, and the other restrains the pipe. These manipulations are performed cautiously. Otherwise, it is possible to harm the section of the riser hidden in the overlap. This is not a problem when the design is replaced throughout the line. The dismantling of the riser, the most time-consuming part of the case. All other components of the sewer are removed much easier and faster.

In what cases can a gas burner be required?

In old buildings, most often sealed sewer with the use of sulfur. It is not so easy to remove. Sulfur can be removed by fire. Upon contact with this substance, harmful vapors appear. In this regard, it is necessary to use a respirator.

When the sealing is made using cement kneading, it will need to be crushed and scrubbed. With this activity, no less important, do not disrupt the integrity of the lower part of the pipe.
  At the end of the dismantling, the junction of old and new sewer pipes must be carefully cleaned.

How to remove the lower parts of the old pipe, when it is fixed with concrete in the floor, and the joint is not treated with sulfur?

The lower sections of the risers are usually made of the constituent parts. They may include a coupling, a compensating branch pipe, and the like. The first thing to do is to test all joints for strength. For what, shake the pipe in the upper part, only very carefully, so as not to damage the bottom bell. Luckily, if it loosens a little, carefully remove all the swinging parts. When the cross is at least slightly unsteady at the junction, remove it using a nail. In the case where the cross is firmly fixed, it will be necessary first to clean the joint deeper. If its clearance allows, then you can use a perforator with a narrow drill. Do not use the winning drill. The mortar filling the joint is crumbled around the perimeter and removed using a chisel.

It's bad when the seam is practically gone, but the cross is fixed firmly. Here you can try to clean the seam with a saw for metal. But, if these manipulations do not help, and you surely want to replace the cross, you will need to cut it 2-3 cm above the bell. The opening of the riser must be covered with rags and fixed with a rope, this is done so that the scraps of cast iron do not fall into it. After that, using a bulgarian without protection, gently cut the remainder of the pipe from the socket. Do not spoil the trumpet remaining in the ceiling. With a special wedge, remove the remaining fragments of the pipe from the socket.

Dismantling of the cross, when the joint is shed by sulfur

The cross itself is not cut, but it is necessary to cut off a large extension of the cross in diameter of 100 millimeters. Now you can more conveniently work with a blowtorch in the pipe, providing the necessary heating of the structure. Above the pipe is installed an asbestos or metal shield, to adjust the thrust in the riser. In the case where there are holes at the bottom near the bell, for example, obtained during the installation of water pipes, through which hot sulfur can penetrate into the neighbor's sanitary unit from below, or to his head. To prevent similar situations, these holes must be covered with gypsum or cement. To eliminate small clefts, you can apply min wool. The riser itself is plugged by a lump made of fire-resistant materials, so that the molten sulfur does not pour into it. Warming is carried out evenly, change the angle of incidence and direction of the fire. From rapid warm-up, the socket can crack. If you heard a powerful clap before your hearing, then this is the problem. This happens rarely. Usually, pipes of low quality cast iron are broken.

Anyway, if the clearance of the groove allows, before starting work is recommended, as much as possible to clean out the old sulfur, using a drill with an elongated drill or perforator. The drill must not have a winning tip. From reheating, sulfur in liquid form will behave unpredictably. It can swirl in or out. When it cools, it quickly takes a solid state. The cured pieces should be kept away from the flame of the burner. Use a gas mask or special masks before sulfur begins to burn, it is not required. But, do not forget that from a strong fire, liquid sulfur can boil and start splashing out. To protect your face and eyes, we recommend wearing protective goggles when working with heating elements.

Periodically, you need to check the mobility of the cross, shaking or hammering from different directions. As soon as you notice that there is a backlash, you must turn off the heat and proceed to the removal of the crosspiece. This is done with the help of two adjustable keys, gently rocking in different directions, lift it up. Be careful, the edges of the crosspiece are fragile enough and can crumble when grasping them with keys. If on the surface of the cross there are drops of burning sulfur, it can be lowered into a metal bucket filled with cold water. Next, you need to clean the inside of the socket, at the bottom of the pipe, the remains of sulfur and soot, using an old chisel or a sharp penknife. Only after complete cooling of the socket you can proceed to install the plastic riser. As with plastic, let's look in more detail below.

Installation of plastic pipes

Be extremely vigilant when you start installing new pipes. There are three basic rules:

1. Installation is made exclusively from the bottom up.
2. All pipes are mounted as if to meet the current of water.
3. In the case where the plastic pipe is not completely sealed in cast iron, linen cloth for reeling, or silicone-containing sealant, may be required.

Tips: so that the cuffs inserted into the joints of the new plastic pipes with the old, cast iron ones are easier to install, they can be smeared with soap. Increased attention should be shown when trimming the pipes to the desired value. In the lower section, a special cuff is inserted, and after the crosspiece. Make sure the connections are tight.

A compensating branch pipe (to the end) is placed in the cut pipe. Assembly should be attached to the upper section of the riser. The gap to the bottom cut with an installed fitting should be more than 5 millimeters. All measurements are taken without rubber inserts and cuffs. They are only used when all the measurements are completed and the workers begin the final assembly. Fasteners are installed in the wall. For a vertically installed riser, three fastenings will be sufficient for the usual height of the walls.

The riser and other constituent parts of the sewage system are assembled. Upon completion of installation of the structure, it must be tested. The optimal method is to pass through a new system a significant drain volume. If there are no leaks, the work was done successfully. As you can see, replacing cast-iron sewer pipes with plastic pipes is laborious and complex. It is advisable to approach this work with a person who has already done this.

Most of the houses in Moscow, which were built during the Soviet era, still have sewage, mounted from cast-iron pipes. To date, plastic is much more practical. Products from it are easily mounted without the use of additional devices. Replacement sewer pipes in the apartment - a fairly popular service, which offers a lot of companies at various costs and rates. At the same time the whole range of works is performed in just a few days. This concerns the dismantling of the old cast-iron sewage  and laying a new system of plastic. This material is not subject to corrosion and with proper installation can be used for many decades. In this case, you can also replace the water supply in the apartment.

Price list for the replacement of sewerage in the apartment

Price list for related services

When replacement of water pipes is required

After a certain period, all property owners have to replace the water supply and sewerage. Over the years, a plaque is formed inside the cast-iron pipes, which not only substantially worsens the patency of the system, but also has an unpleasant smell. It will be simply impossible to get by with simple cleaning. In addition, cast iron itself is a brittle metal, so if the system is operated improperly, cracks may form. Replacement of sewerage in Moscow and other regions by plastic is expensive enough for the cost of service, while the process takes place in the same sequence. The only thing that can differ - the prices of plumbing services and the quality of the work done. If any problems arise old system, it is better to immediately turn to professionals and replace long-worn water pipes. At the same time, the prices for the replacement of sewage pipes in the apartment can be drastically different.

Sequence of work

The replacement of the sewage pipe in Moscow and other regions is as follows:

1. dismantling the old system. If it is a question of multi-storey houses, it is also necessary to take care of the replacement of the riser by a plastic one;
2. wiring for the apartment. To do this, you need to take care of all the components of the new system in advance. In this case, you can not do without using the level with which you are laying;
3. checking the operation of the sewage system and eliminating possible breakdowns;
4. if the pipes are drowned in the floor, then it is worthwhile to take care of pouring the screed. You can do it yourself, or you can contact a specialist. Price repair work  such a plan is quite inexpensive;
5. wait for the crystallization of concrete. Better the first few days not to use the system.

The cost of plumbing services in Moscow varies from company to company. The same goes for the quality of service. It is best to contact us. We are engaged in the provision of such services for many years, besides the price list with the prices of the company you will be pleasantly surprised.

Certificates and licenses of the company

Our main advantages

To date, we have one of the lowest prices for services to replace sewerage and water supply. The cost of repair of the water pipe differs from the market by about 15-20 percent, which attracts customers. In addition, we employ only qualified specialists with a long record of service. Thanks to this, all the work is carried out qualitatively and as quickly as possible.

The price of replacing water and sewage pipes depends on many factors. This concerns the complexity of the work and its scope.

Carrying out major repairs, the owners of apartments and houses try to make a replacement and engineering networks. And sewer pipes in these processes play not the last role. It is no secret that in most domestic apartments the risers are made of cast iron. Therefore, many people have a dilemma, it is worth changing the cast iron products to plastic or not.

Worth it or not

Most of the apartment buildings, which are now in operation in our country, were built decades ago. Therefore, the resource of communications is coming to an end, if not long ago over.

And let seemingly such products look still strong, in fact they may lose their bandwidth. At the same time it is rather difficult to maintain such structures. Therefore, replacement of cast-iron sewer pipes is a necessity, not a modern trend.

Options

If pipes need to be changed, then it is necessary to understand which ones. Many now prefer plastic. It looks good, what you can see on the photo and video on the web, and is a fairly reliable product.

Advantages of plastic products

• joints are created without sealing cords and putty;
• simple and inexpensive installation;
• installation and transportation is easy thanks to the low weight of plastic pipes;
• less risk of contamination due to less resistance to flow.

Disadvantages of plastic products

The instability to high temperatures is the main disadvantage of such designs. They are able to deform if there is a continuous discharge of water above 60 degrees.

Dismantling of the old riser

To replace the pipes, the old ones should be dismantled. This is not as simple as it might seem at first glance. After all, a compound containing cement was used to join the products earlier. Therefore, it is difficult to break such a connection.

Difficulties

In particular, it is rather difficult, if it is required to disassemble the riser pipe, passing between the apartments. Previously, such designs were flooded with sulfur. The connection turned out to be so strong that it is quite difficult to disassemble it.

To destroy such a connection, you will need a blowtorch or gas burner. This will eliminate the sulfur fill. However, all work must be carried out in a gas mask: sulfur vapors are toxic.

Another difficulty in dismantling the old riser is the need for maximum concentration of attention. After all, you can inadvertently destroy the details that are in neighboring apartments or in the floors.

The dismantling process

First, the pipes that are adjacent to the plumbing elements are disconnected, so as not to damage it.

When installing a toilet bowl on cement mortar there is a high probability that it will have to be changed, since even accurate dismantling works have a high risk that the neck will break off. Therefore, one should not hope that the toilet will remain, too careful dismantling will only take more time and energy.

The wiring is disassembled in parts. First, short knees. For trimming pipes you can use a grinder.

Does this so. First, make two horizontal incisions. The distance between them should be about ten centimeters.

A chisel is inserted into these slots. On it you need to knock with a hammer until the planned piece of riser breaks. After all, do not forget about the fragility of the riser. Therefore, it is not worth hitting with a hammer, because the fragments can get inside the sewer. Suitable kiyank or hammer with a rubber nozzle.

At the bottom, the pipe is cut at a distance of about one meter from the tee, and at the top - 8 cm from the ceiling.

Of course, instead of Bulgarki, you can use another tool, for example, a hacksaw, but the process will be much longer.

Installation of plastic products

For sewer pipes, rubber rings should be used. You can start the installation from the far point of entry into the system. The products need to be assembled so that the socket looks up and into the beginning of the sewer.

To close the pipe you need to use special caps.

If the floor gets water, then you can install a trap, which will drain the water into the sewer.

There is one sure way to avoid unpleasant odors in the bathroom or toilet. One or all of the risers should be taken to the roof, where the installation of the vent fitting should be carried out.

Do not forget about the bias for self-care waste water. The meter of the pipe is the centimeter of the slope. Adjustment can be made using the level.

How can one get out of the situation if it is impossible to make a bias? Then it is necessary to connect a special electric pump to the sewage system. Its task is forced removal of drains.

Conclusion

If there are still any difficulties, you can additionally see the video and photo materials. They will allow everything to be done correctly and clearly, then the sewerage will serve without problems a maximum period of time.

In most high-rise buildings and private houses, built several decades ago, sewer pipes are installed from cast iron. Many systems are still working properly, but sooner or later they have to be changed. In addition to natural wear and tear, the question of appearance is actual. Cast iron is too massive, ugly and requires constant care. Replacing cast-iron sewer pipes with plastic at once solves both problems.

Cast iron products are extremely durable, so it rarely happens that pipes installed even 40-50 years ago, collapsed. However, they are often hammered and require cleaning. Job sewage system is disturbed because of the thick layer of deposits on the inner walls of the pipeline, and the owners of the premises make a decision to overhaul the network. As an alternative to cast iron, plastic is often chosen.

Why plastic is considered the best option

There are several options for replacing the sewer pipe, including the same old good cast iron. Modern cast iron products are more technological, convenient to install and almost as durable as those that were produced half a century ago. But in most cases, the owners of houses and apartments choose plastic. There are several reasons:

• Smooth inner walls. This is the most valuable property for sewage pipelines. On smooth surfaces no deposits are formed, the patency of the pipes is high, and their diameter almost does not decrease with time. Replacing cast-iron sewer pipes with plastic solves the problem of frequent blockages. If the pipeline is clogged, it is easier to clean it.
• Ease of material. Plastic is tens of times lighter than cast iron, so any products made of it are easier to transport, carry, lift, climb, and mount. Often, it is chosen from these considerations.
• Easy installation and dismantling. To install a plastic pipeline, you do not have to buy complex, expensive equipment. It is much easier to mount than cast iron. If necessary, the structure is also easily disassembled. If you need to replace the damaged segment, there will be no problems, you can do everything yourself.
• Tightness. Owners of houses who had to install themselves cast-iron pipes, know perfectly well how difficult it is to achieve tightness of joints. With plastic products such difficulties do not happen. Manufacturers produce not only the pipes themselves, but also additional elements that facilitate the installation.

Splice of cast iron and plastic sewerage

A few words about the shortcomings of the material

Whatever the merits of plastic, it is not perfect. To make a well-considered decision, it is worthwhile to understand its shortcomings. The main one is a weak resistance to high temperatures.

In many respects, the range of operating temperatures depends on the quality of the material and the manufacturing technology. Polymers with good performance characteristics are not expensive, so when choosing it is necessary to focus not only on prices, but also on technical indicators.

Plastic sewerage system  Can not withstand prolonged exposure to hot fluid. Thus, at a temperature of 60 degrees the pipeline sometimes deforms. A temperature of 90 degrees is capable of seriously disrupting the system, repair is required.

Manufacturers of plastic sewer pipes are well aware of the problems that arise in consumers, so they offer products with special coatings that reduce risks. They are more expensive than traditional ones, but they are better tolerated by high temperatures, soundproofed, throughput.

What is needed to replace cast-iron sewage pipes

The best option  for residents of apartment buildings - to negotiate with neighbors and change the sewer system throughout the riser. This will help to ensure the effective operation of the entire system. In addition, all tenants will calmly accept temporary restrictions in the use of sewage.

Before commencing work, calculations should be made. If the new system exactly repeats the scheme already available, there will be no problems. If you plan to install new plumbing equipment or change the layout of the pipes, you must make calculations and double-check them.

Making sure that the drawing and calculations are correct, you can buy the right amount of materials, components, fittings, and also prepare tools. You will need a hammer, chisel, measuring devices, a marker. In addition, you should buy a sanitary silicone sealant, cement, liquid soap.

It is very desirable to provide a revision hatch, even if it did not exist before. Due to this, the owner of the dwelling gets free access for inspection and repair of the system. The choice is huge. You can buy a decorative design or find an invisible hatch and trim it with the same materials as the walls.

Important: materials and tools

To simplify the dismantling of cast-iron sewers, it is necessary to prepare a large hammer or sledge hammer, a Bulgarian. Sometimes a gas burner is required to disassemble the system. A worthy alternative is a blowtorch. The number and type of tools depend on how the old pipeline is assembled.

Old sewer systems were assembled with cement-containing formulations. Over time, they become only firmer, which greatly complicates the dismantling. When installing the riser, a sulfur fill was used. It is durable and durable, and you can destroy it only with a blowtorch or gas burner. To avoid poisoning by toxic vapors, you have to use gas masks.

Dismantling of sewer pipes and riser

If it was not possible to agree with the neighbors and you have to change the sewerage risers in only one apartment, they must be disassembled very carefully, trying not to damage the elements of the system in other apartments. Too active actions during dismantling can lead to the destruction of part of the common riser, and then you will have to pay for its repair.

Features of disassembly of the sewage system

First of all, detaches sections of sewer pipes coming from the bath, toilet bowl and wash basin. It is important not to break the plumbing. If with the sink and the bathroom it works without problems, then sometimes you have to say goodbye to the toilet. Old models are often installed on a strong cement mortar, so dismantling is difficult. The toilet bowl can often be kept, but part of the leg can break off.

If you initially plan to replace the toilet, you can not save it and just smash it with a sledge hammer. Then it remains only to get the device in parts. The main thing is to remember that sharp fragments scatter in all directions, and in advance take care of the safety of people. After dismantling the toilet, the remaining parts of the system are disassembled, completely removing the putty and, if necessary, cutting the pipes.

Disassembly of sewerage system

What you need to remember when dismounting the riser

One of the most crucial stages of replacing cast-iron sewage pipes with plastic ones is the dismantling of the riser. Here are some useful recommendations from specialists:

1. To cut the metal, you will need a bulgarian or pipe cutter. Pipes are cut horizontally, making two cuts. The distance between them should not exceed 10 cm. Do not cut through the metal, otherwise you can damage the disc of the instrument. He can jam between parts of the pipe, if she sits under her own weight.
2. When the notches are ready, they insert a chisel and chisel the pieces of pipe with a hammer or a small sledgehammer. It is important to choose a tool from wood or with a special rubber nozzle and do not beat with force so that the metal fragments do not get into the pipeline. Cast iron is fragile and afraid of blows, so a little effort, and it will burst.
3. To be convenient to work and not damage the riser neighbors, it is cut about 1 m from the tee and 8 cm from the ceiling. For this use either a Bulgarian or a hand hacksaw. In the second case it is necessary to reconcile with the long process of dismantling, tk. sawing pig iron takes a lot of time and effort.
4. Dismantling the sewer system requires caution and compliance with safety measures. In addition to working gloves and overalls, it is very desirable to use personal protective equipment - glasses and respirators, because metal dust can get into the eyes or respiratory system.

Scheme of dismantling works

Installation of plastic pipes - basic nuances

How to replace cast-iron sewer pipes with plastic ones? There are several important points:

• The system is collected from the bottom upwards, installing the funnels to meet the flow.
• For additional protection of joints use silicone sealant. A possible option is flax rewind.
• At the joints of old and new pipes, rubber cuffs are installed. To make it easier to mount, use liquid soap.

Sequence of installation works

To the truncated pipe connect the sanitary cuff, and to it a tee. The joint is carefully compacted. Compensation pipe is inserted into the pipe until it stops. Make sure that the distance to the edge is at least 5 mm. After that, you can assemble the system without sealing the joints.

If the fitting is successful and there are no unforeseen difficulties, then the final assembly of the system is started. Begin with the installation of fixtures in the walls. The pipes are then assembled according to the scheme and sealed.

When the work is completed, the system is checked by draining a large amount of water into the sewage system. We need to check whether the junctions are wet. If everything is normal, the system is ready for commissioning.

Replacing cast-iron sewer pipes with plastic ones requires skills. If the system is not assembled correctly, clogs may arise, problems with the discharge of waste water. Therefore, it is only necessary to do the work independently when the owner is 100% sure of his abilities. If there is no such certainty, it is better to hire a team of plumbers.

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The technology of replacing cast-iron sewage pipes with plastic

Doubtful virtues plastic pipe  - low weight, corrosion resistance, easy installation - provided it with wide application in pipelines of various purposes. If you have a replacement sewer pipes from pig iron to plastic, it should be remembered that dismantling of old ones is not an easy task. It requires certain skills when working with an electrical tool and strict adherence to safety rules.

Beginning of disassembly of cast-iron sewerage

Before dismantling the riser, it is necessary to stock up necessary tool, you will need:

• perforator;
• hammer, best with a wooden or rubber nozzle;
• chisel;
• angle grinder (USM), called "Bulgarian", to it - three or four cutting discs with a diameter of 125 mm and one grinding;
• knife, chisel, screwdriver, two adjustable wrench, scrap, steel wedge, used to disassemble parts of cast-iron sewer pipes.

To ensure the safe conduct of work, it is necessary to prepare: a respirator, goggles, a hat.

Part marking should be done very carefully.

Dismantling must begin with the determination of how the connection of cast iron parts - tees or crosses - to the fittings of the sewer pipes was performed. For this purpose, the joint is located, which, as a rule, is located above the floor level. If there is an additional screed or tile on the floor, then in order to find the connection, it is necessary to use a chisel or punch. When working with these tools, care must be taken not to damage the bell that remains in the floor.

The connection of tees and crosses to the pipe could be made in several ways:

• zachekankoy cement-sand or cement mortar;
• with a polymer-cement solution;
• filling with gray.

Dismantling of cast-iron sewage

It consists of several stages:

The pipe joint should be as tight as possible.

1. For cutting vertical pipe  it is best to use a pipe cutter. In the absence of a pipe cutter, a cast-iron pipe can be cut by a "Bulgarian", making two almost horizontal cuts, located at a distance of 10 - 15 cm from each other. The cuts should be placed at a slight angle to each other, converging near the wall, where the pipe must be left uncut in order to avoid sagging of the upper part of the cast-iron pipe. The pipe should be cut three quarters from the perimeter. Using a wedge, hammered to the left and to the right, the cut out segment must be broken using a chisel, and the remainders should be knocked out with a hammer. The piece must be removed carefully, not allowing it to fall into the pipe and, as a consequence, clogging the sewer.
2. Further, the dismantling of sewerage is to trim the upper edge of the pipe at the calculated height. In order to then easily connect the remaining cast-iron pipe to the plastic pipe, at the top leave a piece of pipe emerging from the upper ceiling. The height of the rest of the segment should be equal to the size of the shaped element, which will be pressed when. The cutting should be carried out in a horizontal plane, therefore it is better to pre-mark the line of cut with the help of paint tape. A sharp blow towards the wall is caused by the cracking of the pipe in the place where an incision was made earlier. Cast-iron pipes are very fragile, so this action should not cause any particular difficulty.
3. The lower part of the riser consists, as a rule, of several parts. It can be couplings, revisions, compensatory branch pipes. To check how tightly the connection was made, carefully, without damaging the lower bell, to swing the remainder of the cast-iron pipe. If the pipe is swinging, then you can start pulling out all the components, if necessary, helping yourself with crowbar.

If the connection of the shaped parts with the pipe is very rigid, then in order to disassemble the structure, it is necessary to maximally clear the joint, periodically loosening the pipe. With a considerable width of the joint of the elements to be joined, one can use a perforator with a thin drill without a winning tip. The mortar that connected the elements is neatly hollowed out, and its remnants are removed by the chisel.

Dismantling is much more difficult, if there is almost no seam, and the mortar joints the elements of the structure very firmly.

In this case, an old cloth for metal is used, which you can try to clear the joint. If all previous attempts to disassemble the connection were unsuccessful, then you need to cut the shaped part 2-3 cm above the joint of the connected elements. The pipe cut remains in the socket and is cut by the "Bulgarian" with the protection removed under different angles of the disk inclination. The pieces of fittings that remain inside the sewer pipes are removed using a special wedge.

After all these operations, the dismantling of the cast-iron sewer can be considered finished.

Preparation for installation of a plastic sewer pipe

In order to be carried out quickly and qualitatively from cast iron to plastic, it is necessary to prepare the following materials:

• a pipe made of plastic with a diameter of 50 mm;
• plastic shaped elements, this can be a tee, a crosspiece, a compensating branch pipe, if necessary - a branch pipe and a revision;
• rubber cuff, with which you can connect plastic with cast iron;
• fastening for the riser.

From the tool for sewage installation, you will need: a perforator, a hammer, a semicircle mandrel, which serves to lower the compensation pipe; marker, liquid soap, plumb.

Installation of plastic pipes

Replacement of the sewerage riser begins with the insertion of a rubber cuff into the socket of the lower section of the pipe. A crochet or a tee is installed in the cuff, the butt of which is lubricated with liquid soap. If the connection is not sufficiently dense, then it must be sealed with linen winding or silicone.

The pipe is cut to the calculated length, the facet is chamfered or sanded with a sandpaper. To accurately determine the length of the pipe in it, it is necessary to insert a compensating branch pipe as far as the stop. The received design is also inserted as far as the stop into the piece of the cast-iron pipe, which remains in the upper ceiling.  The minimum gap that must remain between the fitting piece - the tee or the crosspiece - and the resulting assembly must be at least 0.5 cm. A fitting assembly is made without cuffs and rubber gaskets. It is not advisable to connect pipes with sliding couplings instead of compensating nozzles.

The wall mounts: 3 pieces - for a standard ceiling height, 4 pieces - for high ceilings.

For final assembly it is necessary to install all necessary gaskets and cuffs, lubricate the ends of pipes with liquid soap, connect the pipes. After complete installation of the riser and clamping of all the fixing clamps, it is necessary to check the sewerage in operation, passing a considerable amount of water through it. And only after a successful test can be considered fully completed.

In view of the fact that the plastic riser provides noise insulation worse than cast iron, it is advisable to later arrange a protective box.