The principle of gravity flow involves the operation of the sewage system without pressure, however, even in this case, leaks appear at the joints. Thanks to the rubber sealing cuffs for sewer pipes, the efficiency and durability of the drainage system increases, so no pipe connection can do without them. They are used in the exhaust pipes of the bidet and toilets, in the installation of drains from sinks, bathtubs and household appliances. The main purpose of the products is to create tight joints and prevent leaks. The service life of the seals is long enough, but if necessary, they are easily replaced.
Definition and purpose of the sewer cuff
For the manufacture of various materials are used. Products in the form of corrugated pipes and rings are intended for use in production and in residential buildings. Elastic polyurethane, silicone and rubber elements are used to seal joints of plastic pipes, fittings, various types of adapters, giving them strength and eliminating leaks.
Details are classified by purpose:
- Rods have a seat between the rod and the inner surface of the cylinder. Provide tightness during translational and reciprocal movement of a rod.
- Piston pistons are used to prevent the medium from entering the gaps between the piston and the hydraulic cylinder. The advantage of their use in maintaining the freedom of movement of moving elements.
- Universal can work in any conditions.
Depending on the type of connection, the cuffs can be sealing, providing reliable tightness, and transitional, allowing you to easily connect elements of different diameters.
Production material
The raw materials for the production of sealants are selected depending on the operating conditions of the product and the corresponding physicochemical properties of the substance. The material must meet the basic requirements: elasticity, strength, budget, the ability to withstand temperature extremes, long service life.
The most advanced conditions correspond to rubber, from which a variety of models of sealing cuffs and adapters are made. To give the material the desired properties, silicone, rubber and polyurethane are added to the composition of the rubber composition. The resulting compound gives rubber products additional advantages:
- resistance to corrosive chemicals;
- strength;
- reliability;
- resistance to temperature extremes and pressure of the environment.
When conducting external and internal sewage from cast-iron pipes, other types of seals are used. Compounds are minted using a tow, which is treated with resin, making sure that it does not get into the pipe and does not cause blockage.
Types and sizes of cuffs
Seals can be installed both internally and externally. In the first case, they serve to connect plastic pipes of different diameters or to connect washing machines and dishwashers to the sewage system. If it is necessary to connect pipes without sockets, seals are mounted on top of the parts.
Transitional sewer sleeve provides the connection of cast-iron branches and plastic pipes. The length of the adapter with D 124/110 is 80 mm and is used for connecting toilets, with D 72/50 - 110 mm for connecting other plumbing fixtures.
The sizes of the sealing rings correspond to the diameters of standard pipes 32-100 mm, and the length can vary from 25 to 120 mm.Seals 50 * 40, 50 * 25, 50 * 32 are used when connecting washing machines, sinks, wash basins, showers, dishwashers.
Mounting Features
There are two ways to install seals. The choice depends on the availability of a cast-iron bell.
With good condition of sewer pipes:
- Using a chisel, clear the socket from the choking material and mortar.
- Delete the old item.
- Prepare an extension of the cast-iron tap, remove dirt and wipe with a rag.
- Apply sealant to the outside of the rubber seal and insert it into the bell.
In addition, it is not necessary to apply silicone to the outside of the pipeline, since after drying a reliable connection of the elements is formed.
In those cases when it is not possible to remove the old sewer pipes, they are cut off, the edge is made in the form of a cone to ensure easy installation. Since the sewage system is usually active in multi-storey buildings, it is better to choose the morning time for work, when most of the neighbors are at work.
Overlapping hot and cold water in the basement to reduce the volume of effluents. During the preparatory work, the open sewer pipe is plugged with a rag to block access to gases and dirty water. The slice is cleaned of chipping so that in the future they do not cause the formation of garbage jams.
In the absence of a bell, the second method is used:
- Apply silicone on the inside of the fitting.
- Pull the prepared rubber seal onto the cut end of the cast iron pipe.
- Route plastic pipes.
When installing installations, there are times when it is necessary to connect a pipe with a diameter of 90 mm or 95 mm to ordinary sewage made of cast iron with d 110 mm. In this case, use the Geberit 367928 adapter. It fits perfectly into the cast-iron socket, and on the other hand allows you to connect a plastic product of a non-standard size. To facilitate installation, liquid soap is applied to the parts. Automotive oil is sometimes used, but it can lower the performance of a rubber product, reducing its service life.
When connecting pipes of 95 mm and 100 mm to standard sewage, cuffs are used. They are straight or eccentric. The cast iron pipe has a bell, so the connection will not be tight. In this case, cut a piece of pipe with a length of 5 cm, coat it with liquid soap. Then the resulting ring is put on a product that already fits tightly into the socket. The product with an eccentric saves the space of the bathroom, just turn it to the desired position, at which the mounting elements deviate towards the drain pipe.
Advantages and disadvantages of cuffs for sewer pipes
Advantages of rubber products:
- good performance;
- long service life;
- low cost;
- application of modern technologies in manufacturing, quality control at all stages of production;
- resistance to environmental pressure within 0.5 atm. up to 1.5 atm .;
- a wide range of;
In sewer cast-iron bells only rubber rings are used that have high elasticity and strength. The sealant prevents leaks, but the lack of detail in its exactingness to the condition of cast-iron sockets. Even with minor chips, the tightness is broken.
The cost of the products is small, for example, an Ostendorf 110 mm sealing sleeve can be purchased for 175 rubles, a product with d 50 mm double-leaf reinforced - for 5 rubles. Three-petal adapter with sizes 25 * 50.32 * 50, 40 * 50, 50 * 73, 110 * 123 will cost from 9 to 51 rubles.
Fire protection sleeve REHAU RAUPIANO compact 75 Germany made of polypropylene costs 3457 rubles.
