Repair coupling 110 sewer— a specialized fitting that allows you to quickly connect pipes when installing a non-pressure pipeline. The high tightness of the resulting connection is ensured by O-rings, thanks to which the coupling is installed very simply and does not require specialized equipment.

Repair coupling device

This inexpensive fitting is a piece of pipe with sockets equipped with sealing gaskets. The sewer pipes are simply inserted into these sockets, and the rubber rings fit tightly around them, creating an airtight connection.

The main tasks of couplings:

quick and simple installation of non-pressure pipelines;

replacement of pipeline parts during repairs;

compensation for temperature deformations and design errors.

Among Moscow residents, Ostendorf and RosTurPlast couplings are in greatest demand. You can buy fittings from the listed brands at the best price in the Santekhkomplekt online store. There is a wide range of products on sale different sizes and flowers.

Often, during the process of laying or repairing the internal sewer network, a problematic situation arises. It consists in the fact that the pipeline linearly expands and contracts with temperature changes. What to do in this case? Then you can use a 110 mm sewer compensator. This material will tell you what it is.

Essentially, the compensator is a fitting. Namely, an element that serves to level out linear extensions of the sewer network during its operation.

Manufacturing materials

For the production of sewerage pipes, manufacturers traditionally use:

• metal: steel and cast iron;
• molded reinforced concrete;
• asbestos cement;
• ceramics

Just a few years ago, plumbers preferred to work with metal pipes. However, this material has several disadvantages:

• he is very heavy;
• installation of a metal pipeline is complex and time-consuming;
• Steel sewers rust, and cast iron sewers quickly become overgrown with sediment.

Therefore, with the beginning of the production of polymer pipes, builders are increasingly giving preference to them. There are three types of plastic products, including sewer expansion joints:

• polypropylene products;
• polyethylene analogues;
• polyvinyl chloride expansion joints.

Important! The most popular are polypropylene products. They make it possible to solve pressing engineering problems related to the installation and use of sewer networks.

Scope of application, cross-section and design features

All materials used for sewerage installations have their own linear deformation parameters. Therefore, the plastic expansion joint is not suitable for all pipelines. The effectiveness and demand for this fitting increases if the drainage network is walled up in floors or walls.

The compensator is mounted on a sewer pipe at the bottom of the risers, located in technical, utility, basements. It gives the desired slope to horizontal sections when unifying drainage branches made of different materials.

The fitting allows you to compensate for deformations and failure of the network due to its linear temperature contraction/expansion.

Compensators are often used to repair internal sewer systems. They make it possible to replace failed sections of the pipeline without completely dismantling it.

Often, installing a fitting is necessary when renovating a bathroom or restroom. In this case, it is used if differences in height of the floor require raising or lowering the crosspiece of the riser to create an optimal angle for the discharge of sewage into it.

The expansion pipe made of polyethylene and polypropylene is a straight section of pipe. On one side it is equipped with a 110 mm connecting socket. It contains an o-ring seal made of rubber.

Polyvinyl chloride products can be corrugated, which improves their compensation characteristics. There are also products with a curved configuration; they are designed for installation or repair of rotating sections of sewer networks.

Advantages and technical characteristics of plastic expansion joints

Polypropylene expansion joints for sewer pipes are used most often. Their popularity is explained by a number of advantages.

Advantages of polypropylene pipes

Features of polypropylene adapters:

• long service life: the average service life of products is 30–40 years;
• low weight: due to this, labor costs when installing the compensator are low;
• easy installation, similar to constructor assembly;
• resistance to aggressive chemicals and temperature changes;
• the material is not subject to corrosion;
• due to the smoothness of the inner walls, deposits grow on them very slowly;
• the material is environmentally friendly, which is confirmed by hygiene certificates;
• Such compensators are inexpensive.

Important! Manufacturers produce a wide range of expansion pipes with different sections and shape. This makes it possible to install sewer networks of any design and complexity.

Technical characteristics of polypropylene products:

• total length - 28 cm;
• outer diameter of the bell - 11.5 cm;
• internal section of the bell - 11 cm;
• wall thickness - 3.2 mm;
• continuous operating temperature limit - +95 degrees;
• pressure in the network in which the compensator is operated is without pressure;
• color - pale gray;
• transported medium - sewage;
• warranty period - 24 months;
• The declared service life is 50 years.

How to install an expansion pipe?

To ensure that the insertion of the compensator is correct and of high quality, you should:

• take into account the thickness of the pipe walls;
• determine the length of the sewer network in order to calculate the level of pressure on the connected joints.

Important! The best option increase the tightness of pipe connections with thick walls - use silicone sealant. This material is elastic and therefore will not interfere with compensatory movements. Sealing network elements is also effective when the sewer system is planned to be used with increased exposure to extreme temperatures.

Algorithm for inserting polyethylene and polypropylene expansion joints into the riser:

• first, a section of the pipeline to which the compensator will be connected is cut out with a metal hacksaw;
• the edges of the cut are processed with a file or coarse emery cloth to remove burrs;
• then silicone sealant is applied to the upper end of the riser (it is better if it is a special plumbing compound);
• after that, the compensation bend is pulled onto the treated side until it stops;
• then the underside of the riser is covered with sealant;
• then the corresponding end of the compensator is fixed in its socket;
• then the riser is fixed;
• After the silicone has dried, the system can be used.

A 110 mm compensator for sewerage made of polyvinyl chloride can be mounted using the same method as polyethylene and polypropylene analogues, that is, by pairing elements in a socket.

Installing PVC adapters is quite easy and does not require special preparation. Some tips for installing these fittings:

• It is best to cut pipes with a hacksaw with small teeth, for example, a metal saw, so there will be fewer burrs on the cuts;
• Dry and clean sides of the elements must be sanded and sealed;
• All cavities that appear must be filled.

The compensator makes it possible to repair the sewer system without dismantling large sections of it. Its plastic varieties are installed simply and quickly. You do not need to be a qualified plumber for this type of work.

When installing sewer systems, in addition to pipes of the required diameter, you need to use many additional elements. Most often, a coupling is needed for sewer pipes. It is this that allows us to ensure the required level of tightness and strength at the joints.

Couplings and their use for sewerage installation

Classification of connecting elements

Couplings are special parts of a sewer pipeline that serve to connect its individual elements.

They come in two main types:

• sewer coupling for installation of an internal sewerage system;
• a connecting element intended for use outside residential and administrative buildings.

Another important classification criterion is the types of connections:

1. Threaded. Used for joining drain systems of small diameter. Often pipes with such connections are installed under kitchen sink or a sink.
2. With rubber ring. A very common type of connection, widely used in the installation of sewer systems. Its advantages are fast and uncomplicated installation without the use of special tools or additional materials.

1. On glue. In this case, the coupling has neither threads nor a special rubber seal. A special glue helps ensure the tightness of the connection. This method cannot be used in places where pipes will sag.
2. By welding. The most durable connection. Can be used for both metal and plastic pipes. The disadvantage is the need to use special equipment. When installing systems yourself, welding is practically not used.

The materials for the manufacture of the considered elements of drainage systems are:

• polyvinyl chloride;
• polypropylene;
• polyethylene;
• steel;
• cast iron;
• copper and so on.

The rubber coupling for sewerage deserves special mention. It is used for joining system elements made of various materials(for example, plastic and cast iron).

Advice!
If you plan to install the sewer system yourself, choose PVC pipes and couplings with an O-ring connection.
They are distinguished by affordable prices and excellent specifications.

Advantages of PVC couplings

Previously, sewer systems were made of cast iron using metal joints. Fastening was carried out using electric welding.

Today, plastic is almost always used to design sewage disposal systems. This has a beneficial effect on both cost and reliability.

Let us dwell on the advantages of PVC connecting products.

Advantage	Description
Light weight	This is a very important indicator. The lightness of individual elements and the entire finished system facilitates the delivery of materials, their assembly and fastening.
Long period of operation	The guaranteed service life of the elements used is from 40 to 50 years. The material used in their manufacture is not subject to the destructive effects of ultraviolet radiation, water, temperature changes and perfectly tolerates aggressive chemical environments. Besides, PVC couplings never become overgrown with corrosive deposits, which often happened with cast iron products.
Easy to install	To connect pipes using couplings, you do not need to use welding or other equipment. The instructions for fastening are simple - you should tightly insert one part into another. This does not require the participation of an experienced plumber.

Special couplings

Fire protection

Another element without which the sewerage system should not be operated is fire couplings that prevent the spread of open flames through pipelines.

This device is a metal cylinder with a special liner. The latter consists of a special non-flammable material that swells under the influence of elevated ambient temperatures.

An activated fire suppression coupling for sewerage seals the pipeline, preventing further spread of fire.

This part must be installed on every plastic pipe in the building and fixed to the main wall or ceiling. Their installation is not difficult and can be done at any stage of construction work.

Advice!
Fireproof couplings for sewerage – effective remedy, preventing the spread of fire throughout a residential building.
During construction country house or when renovating an apartment, you should not neglect the installation of this element.
Small savings now can lead to huge fire damage in the future.

When purchasing a product for fire protection, you should make sure that the product meets accepted standards and has the appropriate certificate issued by regulatory authorities. Otherwise, its effectiveness will be zero.

Repair coupling

Special elements used in the sewer installation process include a repair coupling. It is slightly longer than standard connecting parts and is used to replace damaged sections of the pipeline, as well as insert additional fittings.

The procedure for using special accessories is as follows:

• the pipe is cut into in the right place(or the damaged area is cut out);
• a special repair element is put on the lower end (its outer cut must be pushed until it is level with the end of the pipe);
• a coupling with an elongated socket is put on the upper end in the same way;
• the required shaped part (or an undamaged section of pipeline) is inserted;
• then the coupling with the extended socket is moved down, and the repair one is moved up, as a result of which all the parts are connected together.

The inserted pipe section (during repairs) should be treated accordingly. To do this, the ends are chamfered, after which they are treated with technical lubricant. This guarantees complete absence leaks after repairs.

In especially difficult cases, maximum efficiency can be achieved by pumping into the ends of the couplings silicone sealant. After it hardens, there can be no talk of any leakage.

Conclusion

When purchasing couplings, make sure that there are no cracks on their surface. Check the ends especially carefully. In the event of a chip, it will be impossible to achieve the tightness of the installed sewer system without replacing the damaged part.

You can learn more about sewer systems from the video in this article.

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Sewer coupling: 4 types and features of their installation

This article is devoted to shaped parts for connecting socketless sewer pipes - sewer couplings. In it I want to mention several little-known varieties of this style and talk about methods for installing couplings in various conditions.

Type one: for connection

Description

The most common coupling for sewer pipes consists of two counter-directional sockets. The narrowing between them allows the shaped part to be positioned symmetrically relative to both pipes: neither of them can be inserted beyond the narrow section.

When installing a new sewer system, if possible, it is assembled without couplings, using socket pipes and fittings.
The fact is that the bell directed against the flow of sewage practically does not create resistance to the flow and, what is much more important, does not catch the garbage it transports.
The socket, directed in the direction of flow of the drains, often collects rags, hair and various deposits.

Here is the approximate price of shaped PVC parts of the most popular sizes:

Installation

The main area of ​​application of couplings is repair and insertion of additional bends. As a rule, they are used with another shaped part — compensating pipe(short socket pipe with an extended socket).

The photo shows a compensating pipe in the sewer drain of my house.

For example, when inserting into a straight section of a sewer drain (horizontal section of a sewer) without socket joints, the installation instructions look like this:

1. A section of pipe is cut out;

The most convenient way to cut plastic and cast iron sewers is with a grinder.
To mark the cutting line, wrap the pipe in a sheet of paper and trace it with a pencil or marker along one edge of the sheet.

1. The ends are cleaned of burrs;
2. From them the outer chamfer is removed;
3. A coupling is put on the lower pipe;
4. The compensating pipe is pulled all the way onto the top one;
5. The socket of a straight or oblique tee is put on the smooth end of the compensator;
6. Then the compensator, together with the tee, is moved down the pipe until it aligns with the coupling socket;
7. The molding is fixed with clamps or clips under each socket to avoid uncoupling of the connections.

Type two: for repair

Description

Yes, yes, yes, I remember very well what is written just above: the coupling is also used mainly for repairs. The so-called repair coupling differs from it only in the absence of a narrowing between the sockets: it has the same internal diameter along its entire length. This feature makes it possible to freely move the coupling along smooth pipe or... that's right, smooth pipes connected end to end.

Accordingly, this type of fitting is used to eliminate defects in smooth, permanent sections of the pipeline.

Installation

1. A cut is made on the pipe near the defect;
2. The ends of the pipe are shifted relative to each other. If necessary, the pipe is freed from nearby fasteners;
3. The cuts are deburred and chamfered;
4. The coupling is put on one of the pipes;
5. The pipes are centered;
6. The coupling is moved to the end of the second pipe and secured with a clamp.

A special case

Despite the popularity of plastics (primarily polyvinyl chloride and polypropylene), cast iron drainage is still used in many homes old building. Accordingly, it periodically needs repairs.

Repair couplings for cast iron differ markedly from plastic products the same functionality. The fact is that cutting a cast iron pipe and spreading its ends apart is a non-trivial task even for a bench hanged in the basement, not to mention risers.

The coupling for cast iron is a wide split clamp with rubber gasket. For installation, it is disassembled, put on the damaged area and tightened with bolts. However, much more often a connecting coupling and a compensating pipe are used to repair damaged areas.

The only difference cast iron sewer from plastic in terms of their installation - a method of sealing socket joints. It works like this:

1. Pipes and fittings are installed in the working position and fixed with clamps;
2. A heel (a hemp strand impregnated with bitumen) or, which is much better, a graphite gland, is placed in the socket with the sealing of each turn by embossing;
3. The outside of the bell is sealed with cement or a cement-sand mixture prepared in a 1:1 ratio.

Variety three: cuffs

Description

Yes, yes, the coupling can be made not only of plastic or cast iron, but also of rubber.

Strictly speaking, a rubber coupling for sewerage is not a completely accurate name. Under this name, cuffs are usually sold that allow you to connect parts of different sizes or made of different materials.

Here are some examples of such products used in sewer installation:

• Sealing collars for joining a smooth pipe with a cast iron socket;

• Cuffs - adapters from PVC to polyethylene pipe(they differ slightly in outer diameter with the same nominal);
• Connecting cuffs for connecting the tank shelf and the toilet flare, used in old-style domestic compacts.

Installation

The sealing collars are inserted into the socket, after which a pipe of smaller diameter is pressed into them with some force. The connecting ones (in particular, the same cuff between the tank shelf and the toilet) are a little more difficult to install:

A few nuances:

• Before installing any type of cuff, the parts to be connected (primarily the inner surface of the socket) cleaned of any contaminants;
• If the surface of the socket is uneven, the sealing collar sit on silicone sealant;

Before applying the sealant, the socket must be not only clean, but also completely dry.

• A leak in the connecting cuff, if it is not caused by cracks in the rubber, can be eliminated by applying a tie wire clamp.

Type four: fighting fire

As you know, in the event of a fire, any internal network engineering buildings, including sewerage: fire couplings are designed specifically to stop fire.

Description

How is a fire protection coupling for sewerage constructed?

1 - tie lock, 2 - detachable galvanized body, 3 - petals for fastening, 4 - thermally expanding liner.

How it works?

The liner in the coupling consists of a mixture of graphite and rubber or other materials that significantly increase in volume when heated and do not support combustion. The critical temperature of the coupling is 170 - 200C. A coupling installed in front of the internal fire barrier or directly in it, when the liner increases in volume, completely blocks the gap and creates a flame barrier for up to three hours.

Installation

Fire-prevention couplings for sewerage are mounted directly on plastic pipes inside the partition, on one side of it or on both sides.

The coupling is placed only on a plastic pipe.
The thermal liner is triggered after its walls burn out or melt and blocks the passage in the wall.
WITH cast iron pipe for obvious reasons, this scheme will not work.

For installation you need:

1. Disconnect the split housing;
2. Place the coupling on the pipe and tighten it with a snap tie;
3. Secure the body to the petals.

Conclusion

I hope that our acquaintance with unusual types of sewer fittings was sufficiently informative for our dear reader. As usual, Additional materials The video in this article will be provided to your attention. I would appreciate your comments and additions.

Good luck, comrades!

July 7, 2016

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