Fan pipe for sewerage in a private house. Secrets of installing a sewer pipe in a private house

In any private house, it is simply necessary to equip a system responsible for high-quality ventilation of the premises. For the arrangement of these structures, fan elements are considered the most suitable, which prevent air discharge in the ventilation system. Siphons, also used in the process of arranging ventilation, are small in size and have a small supply of water. But with a long downtime of the system, the water from the siphon evaporates, which allows foreign odors to easily penetrate the ventilation system of the house.

The use of fan pipes allows you to avoid pressure drops inside the system, ensures the operation of the system with a lack or complete absence of water in the siphon. This problem is especially relevant for country houses, often used for temporary residence. A poor ventilation system that allows sewer odors to enter the home causes unpleasant odors throughout the home.

Even if not used for a long enough time, the sewage system is capable of accumulating volatile gases, which, at the first opportunity, rise through the ventilation ducts. With a lack of fluid in the siphon, warmer sewer air can enter the room.

Useful information:

What are the pipes made from?

Elements of sewer structures have not been made of asbestos, ceramics or cast iron for quite a long time. Modern material is considered to be inexpensive, lightweight and easy to install plastic. Most often, for the arrangement of sealed sewer systems, PVC elements are used in combination with rubber seals. At the same time, it must be remembered that each type of pipe must be used taking into account subsequent operating conditions and operating temperatures. To connect dishwashers and washing machines that use high-temperature water for their work, it is necessary to use special pipes provided for these tasks.

But having considered this issue in more detail, we can conclude that this is practically impossible. Most often, the diameter of the pipe connected to the drain of the bath and the toilet does not exceed 110 mm, and the diameter of the drain hole of the tank does not exceed 70 mm, the diameter of the siphon is set to no more than 50 mm. Other plumbing equipment used in a modern house or apartment is designed to use small drains that do not greatly affect the overall situation.

If the task is to equip several bathrooms, the use of fan pipes is justified and necessary.

Fan pipes are used in the following situations:

if it is planned to install several toilet bowls or bathtubs in the cottage, placing them on different floors of the house;
if the sewer risers will have a cross section of 50 mm;
pools are included in the general sewerage system, affecting the total volume of sewage;
on the site the use of septic tanks that can cause unpleasant odors is provided.

Installation rules

When installing exhaust pipes, two basic rules should be followed:

The diameter of the exhaust pipe must be equal to or greater than the cross section of the sewer outlet.
When positioning the final hood section, it is necessary to find a place with a good supply of fresh air.

When erecting fan pipes, the same methods and technologies are used as in the process of installing risers. If you look, the exhaust system can be called the final element of the sewer, installed in a pre-designed ventilation duct.

Quite often, if the required number of outlets for ventilation is not provided, it is possible to carry out exhaust structures through the walls of the room. On the holes that appeared after this on the outer part of the wall, you can install decorative elements, gratings.

A sewer pipe in a private house will help get rid of unpleasant odors even in rooms with a properly equipped exhaust hood and ventilation system.

The siphons used in sanitary fittings and drains are small and cannot hold a large volume of water. This leads to the fact that with irregular use, moisture can completely evaporate and open the way for air from the sewer system.

When installing fan pipes, the problem with the penetration of unpleasant odors from the sewer system is almost completely solved, warm air from all sanitary appliances is discharged into the atmosphere without any problems.

Video - Features of installing a fan riser

In the presence of one or two sewer risers, fan pipes can be easily brought to the roof of a cottage or a private house. With an increase in the number of risers, the appearance of the building will be spoiled due to the large number of hoods on the roof.

If there are more than three sewer risers, it is possible to install one fan structure and equip other risers with valves consisting of a spring and a rubber seal. This vacuum valve is designed to supply air to the pipeline when a discharged volume appears, which occurs when water is drained in the system. After pressure equalization, the valve closes securely, preventing odors from entering the system.

There is an opinion that vacuum valves can successfully replace fan pipes. But if it is planned to place treatment facilities on the site, a sewer hood is simply necessary to remove sewer fumes.

Building codes and standards based on theoretical calculations, the laws of physics and many years of experience in installing these systems, require the laying of exhaust communications and ventilation systems along the contour of heated areas. In this case, the final section should be located in the area where colder air masses are located.

Installation of fan pipes is unacceptable in the attic. This is due to the fact that an unpleasant smell will constantly accumulate in the attic space, then penetrating into other rooms of the upper floors of the building.

Installation of sewer hoods near the outer walls of the building can significantly spoil the appearance of the building. Evaporation from sewage moving upwards can, after a relatively short amount of time, leave an unpleasant coating on the roof and upper elements of the house.

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For owners of country houses who do a lot to improve their home with their own hands, it is useful to know some of the features of arranging water supply and sewer systems. These are the most basic engineering communications, without which the construction of any house is not complete.

When installing a sewer, it is important to remember about such a device as a fan riser. What is this device and what are the nuances of its installation? These and a number of other questions can be answered in our article.

The fan riser in a private house is a part of the pipeline connecting the sewer riser to the open air.

Fan pipe on the roof of a private house

In the absence of this element, during the development of wastewater, a rarefaction occurs in the system, the water seal is broken, and an unpleasant odor is felt in the room. For each plumbing device, a discharge pipe with a knee is required. In this bend, water is normally found. It also performs the function of a water seal, preventing the penetration of unpleasant fumes into the house. With a sharp discharge of wastewater in the sewer pipes, a vacuum occurs. Air from the street passes through the fan device into the system, and the pressure returns to normal. This ensures that there are no odors.

Sometimes you can do without a fan riser. For example, in a small building consisting of one or two floors. However, a mandatory requirement in this case is the equipment of only one bathroom.

If the house has two or more bathrooms or several toilets, then the installation of a fan riser is mandatory. Its presence is determined by the following factors:

Development stage

Even at the design stage, in order to install the sewer riser correctly, two basic requirements must be taken into account:

The sewer pipe must be led out in the direction from which the vapors are discharged due to air flows.
Simplified, the installation of a fan system can be understood as the supply of pipes to the ventilation duct. If this is difficult, the outlet is carried out through the wall.

The ventilation structure for eliminating unpleasant odors consists of different parts:

fan pipes;
ventilation ducts;
connecting elements;
fittings.

Features of the work

Having dealt with what a fan riser is, you need to carefully study the principles of its installation. It is advisable to plan the installation of this device as soon as the development of the project of the internal sewer system begins. In order for ventilation to work better, you should try to avoid bends and corners in the structure.

Fan riser output diagram

The ideal position of the air riser is exclusively vertical. This pipe is led through the floors between floors to the roof. However, this is not always possible in practice. Often in country houses you have to use additional elements for connection.

Sometimes they use the method of connecting several risers into one duct. This can be connecting an auxiliary riser to the main one or removing a vent pipe with its connection at the same distance from two risers.

This installation method is better because it allows you to evenly distribute air pressure throughout the system.

Fan pipes on the roof of the building

One of the main rules of installation is the correct diameter of the air pipe. It should not be larger than the diameter of the sewer. At the same time, the indicator of this element ideally corresponds to the size of not only the central riser, but also the branch pipe, which serves to connect the external and internal sewers.

It is also worth remembering that it is unacceptable to combine sewer ventilation with any climatic design or carbon monoxide removal during operation of the heating boiler.

How to change fan riser

If the air riser breaks down, it is often necessary to replace it. The replacement of the structure is carried out according to the same principle as the repair of individual sections of the sewerage system. This process differs mainly in the material from which the pipes are made, and in the method of their connection.

Fan pipe repair

To replace the fan riser, a number of conditions must be met:

During demolition work organize good ventilation in the living room.
Structural elements need to be replaced in a respirator and rubber gloves.
At the end, you need to make sure that all the pipeline was sealed.

By itself, the installation of a fan riser is not particularly difficult. Nevertheless, the masters recommend following some important requirements.

It is better that the diameters of the fan pipe and the riser match.

Fan cast iron pipe

If a combination of several materials is used in the work, for example, a plastic fan pipe and a cast-iron riser, it is recommended to use a rubber adapter.

For articulation of several fans, angles of 45 or 135 degrees are used. Sections of the fan system, located horizontally, must be laid with a slope of 0.02% in the direction of the gas outlet.

If it is required to change the angle of the direction of the pipe, a special bend with a degree of rotation of 135 is used.

Requirements that fan risers must meet

Certain criteria have been developed for air risers. During the installation of the system, it is advisable to check with them:

When the pipe is brought to the roof, it must rise above the roof by at least 30 cm.
If an attic or attic is built the minimum length of the pipe must be three meters.
The gap between the pipe and a nearby light opening or loggia is made in length at least 4 meters.
Fan system in accordance with existing regulations is carried out through rooms with heating or must have an individual insulation.
It is not allowed to lead the air pipe through the chimney.
The upper component of the fan riser is equipped with a protective grate, which prevents the penetration of insects and birds into the structure.

Common mistakes when installing a riser

Despite the fact that the installation of the fan system can be done independently, there are a number of nuances, the knowledge of which will help to avoid serious shortcomings in the installation of the riser.

Installation of a fan pipe

Sometimes incorrectly carried out work on the equipment of a funnel design has rather unpleasant consequences.

For example, the owners of country houses do not always correctly install the fan pipe, trimming the system immediately in the attic. This leads to the fact that unpleasant odors seep into the attic, which can also penetrate into the housing.

Another serious drawback is the installation of a fan on the outer wall. In this case, there is a risk of condensation.

Some owners prefer to mount an additional device - a roof aerator.

Pitched roof aerators

Its function is to improve traction. However, this is not always advisable. In most cases, the following happens: the outflow of sewer gases is weaker and an unpleasant smell from the bathroom can be felt in the house.

Installation of an air riser becomes a prerequisite for the correct equipment of the waste system. The absence of this device leads to rather negative consequences.

Sometimes it is better to entrust the installation of the pipe to qualified specialists. If you do not have the required number of tools or materials, you should not do the installation yourself. Buying the right equipment, which is unlikely to be useful to you in the future, does not make sense. In addition, the arrangement of sewer systems has its own specifics. An experienced master plumber will do the job efficiently, taking into account all requirements.

In order to correctly perform the installation, it is necessary to strictly observe a pre-prepared project and perform all the necessary calculations.

What can replace the fan pipe

An alternative option for ventilation sewer systems is considered to be vacuum valves. They are installed at the end of the sewer riser in the house itself.

Installation of a vacuum valve on a sewer riser

Inside the vacuum type valve is a special spring with low resistance and a rubber sealing element for tightness. The principle of operation of such a device is as follows:

Sewer drains, passing along the riser, provide a vacuum in the system.
The shutter or valve opens.
The air from the siphon is sucked in and passes into the sewerage network. This extinguishes the vacuum.
After normalizing the pressure in the sewer system, the spring mechanism comes into action. The valve closes the gap and does not allow an unpleasant smell to pass into the room.

In situations where it is not possible to install a sewer check valve on the riser, this device can be mounted on any other segment of the horizontal pipe leading to the riser.

Attention should also be paid to such an important point as the presence of a hydraulic lock at each plumbing point.

Using a hydraulic seal

Otherwise, an unpleasant smell in the house cannot be avoided, despite the properly installed sewer system and ventilation equipment. Most modern sewer devices have built-in hydraulic seals.

There is a special document - a set of Building Norms and Rules (SNiP). These requirements must be taken into account. The documentation contains the conditions for the mandatory equipment of fan risers:

houses with two floors and above in which there is a sewerage system and installation of plumbing devices;
in houses with independent sewerage, with the presence of a storage tank, septic tank or cesspool;
if indoors constant bad smell.

In any case, it is necessary to equip an air riser in a country house. Only in this way can the work on laying the sewer pipe system be considered correctly performed. No one wants to put up with the presence of sewer odors in living quarters. You can invite professionals to install the fan pipes, or you can try to cope with this task yourself.

To communicate the sewer system with the atmosphere and ensure its ventilation during the construction of communications in residential buildings and public buildings, a sewer pipe is used.

Waste water, flowing down a vertical riser, creates a vacuum in the pipes, which is partially compensated by the remaining water in the siphons. However, if a one-time powerful drain occurs, the drains, when moving down, form a vacuum in the sewer system and cause the emptying of all siphons. This, in turn, leads to the penetration of unpleasant odors from the bowels of the sewer into the premises.

This problem is quite real and it delivers a lot of inconvenience and discomfort. Installing a fan pipe will help solve it, which you can learn about from our article.

The use of fan pipes

In accordance with the current building regulations, the construction of a sewer system without including a fan pipe in the design is possible if a one-story house is being built. This is due to the small number of one-time drains.

However, in low-rise buildings, the need to install a fan pipe sometimes arises. This occurs in cases of a single discharge of a large volume, when the cross section of the vertical riser is blocked by a 100% wastewater flow, for example, when using a bathtub and a toilet bowl at the same time.

As a rule, the toilet bowl is mounted on a sewer pipe with a diameter of 110 mm, the cross section of the drain hole of the flush tank is often 70 mm. A pipe with a diameter of 50 mm is connected to the bathroom, which is then connected to the riser. Thus, the cross section of the siphon does not exceed 110 mm. It turns out that during the operation of one toilet bowl or only a bathtub, the inner diameter of the riser does not completely overlap.

Sinks, washbasins and household appliances connected to the sewer (dishwasher or washing machine, etc.) are also not able to noticeably affect the volume of a one-time drain, so a toilet pipe can be installed as desired in this case.

If the house has several bathrooms that are used by different family members at the same time, a vent pipe is a must.

The construction of a sewer system with fan pipes is advisable in the following cases:

installation in a private house of a sewer riser with a diameter of 50 mm or less;
the presence of two or more floors, each of which has sanitary facilities;
if the house has a pool and other plumbing equipment that generates powerful drains.

Implementation of the installation

Installation of fan pipes

If you are installing a fan pipe with your own hands, follow the basic rules:

when purchasing building materials, make sure that the sections of the sewer riser and the fan pipe match; the optimal diameter of the fan pipe (as well as the riser) is 110 mm;
the outer section of the riser should be placed in such a place that sewer "aromas" from it quickly and freely disperse in the atmosphere;
the starting point of the sewer should be located in a heated room, but the end point, on the contrary, in a cold one. This provides the necessary temperature and pressure difference, due to which unpleasant odors are removed from the house.

Pro tip: The fan pipe is the actual continuation of the main sewer riser and can be made independently from a pipe intended for sewerage of the appropriate diameter.

Unpleasant odors in the bathrooms appear due to the fact that siphons of insufficient volume are installed on sanitary appliances. In small siphons, the remaining water dries quickly (in 3-5 days if the plumbing is not used), which opens up free access to smells from the sewer into the room. Sometimes the installation of siphons of a larger capacity is impractical, then replacement of the fan pipes in the apartment is required.

If the sewerage of a residential building has such a component as plastic pipes, the problem is solved as follows:

the air in the sewer riser, rising up and falling outside the pipes, creates a vacuum in the sewer system;
when the siphons are dehydrated, the air from the room seeps into the sewer, and not vice versa;
the air remains fresh, without an unpleasant odor, even when the plumbing is not used for a long time.

Roof vent pipe

The tasks of household intra-house sewerage include the transportation of effluents from the building to an external sewer system. For its effective operation, good ventilation is required, which is provided by risers equipped with fan pipes.

Pro tip: The vertical fan riser must be led to the roof. It is strictly forbidden to place the output in the attic.

To properly install a fan pipe, you must adhere to the following principles:

ensuring the outlet of the fan pipe to the roof, the optimal height is provided - 50 cm; if the roof is used for any purpose and is actively used, the outlet of the riser should not be less than 3 m;
a sewer pipe for a fan 110 mm in diameter is connected to a sewer riser of equal cross section;
one fan pipe can connect several risers at once;
it is forbidden to organize the withdrawal of a riser equipped with a fan pipe, together with a ventilation system or stove chimneys;
the exit of the fan pipe, located above the roof, is made at a distance of 4 m or more in the horizontal direction from the windows, balconies, etc. to be opened.

Connection of several risers with one fan pipe: 1 - oblique tee; 2 - knee at 45 degrees; 3 - straight knee; 4 - straight tee.

The sewer riser brought to the roof does not need to install any additional exhaust devices (for example, a deflector, a weather vane). Moreover, the use of these attachments can lead to the release of condensate in the system, which, if frozen, will block the outlets.

For ventilation of the sewer system, fan pipes are used: the sizes of such products vary, but the most common use is 110 mm pipes.

Check valve for downpipe

Installation of a fan pipe is simple: installation is carried out in a channel previously provided in the ventilation. If the ventilation scheme contains a small number of vented risers, the exhaust pipe can be led horizontally through the nearest wall. This, moreover, will not harm the interior design of the room.

The drain pipes must be equipped with a check valve. It corrects the situation when the wrong slope of the sewer pipe is made, and also protects the sewerage system of the house from:

returning wastewater back to plumbing fixtures;
penetration of rodents;
ingress of mechanical impurities.

The valve can be mounted not only inside the fan pipe, but also outside. Internal installation involves preliminary thorough cleaning and degreasing of the pipe with further installation of a special insert. Check valve for waste pipes is sold separately from this insert. It is placed in the opposite direction of the movement of drains, and its petals should be bent towards the plumbing.

When laying a drain pipe with a working diameter of 110 mm, an adapter is required to install a check valve. If the fan pipes are connected to gray pipes with a sawn socket, the valve is mounted in the pipe.

Pro tip: When installing a check valve, experts do not recommend using silicone and any other lubricants, even those intended for sewer systems. Perform all installation operations on dry surfaces.

The construction of any private house is not complete without the installation of engineering communications. In particular, we are talking about the sewer system. When installing it, do not forget about fan riser device. Next, consider what it is and why this device is needed. The article will also provide brief instructions for installing the riser, recommendations from experts, regulatory requirements, as well as an alternative option and the most common errors in operation.

Purpose

Fan riser in a private house- part of the pipe extending from the sewer central riser. It goes outside the building and removes unpleasant odors from the house. The absence of this element leads to a violation of the water seal. As a result, an unpleasant smell appears in the room. Sewer cleaning in such cases will not help to get rid of it.

Each plumbing fixture has a drain pipe with an elbow. There is water in the bend, which acts as a water seal. It prevents the penetration of unpleasant odors into the room. When the drain is discharged, a vacuum occurs. The skull receives air from the street, which ensures the normalization of pressure. Due to this, odors do not penetrate the room.

Is always do you need a fan riser? You can do without this device in small buildings with one bathroom. If the house has 2 toilets or 2 bathrooms, it is necessary.

Important Factors

The fan riser is equipped if:

The building is two-story, and each floor has a bathroom.
The diameter of the sewer drain is 50 mm.
A swimming pool or other facility is equipped on the adjacent territory, which requires regular discharge of water in large volumes.
The house has a sealed sewerage system with a septic tank.

Develop an installation plan

To properly mount sewer pipe for sewerage, it is necessary to take into account the following factors at the design stage:

The pipe should go to the side in which the vapors are discharged due to air flows.
Pipe removal is performed to If this is not possible, installation is carried out through the wall.

Elements

Ventilation sewer riser includes:

Pipes.
ventilation ducts.
Fitting.
Connecting elements.

Mounting principles

How to install a fan riser for your home? It should be said right away that installation planning must be carried out simultaneously with the design of internal sewage. To increase the efficiency of the riser, it is necessary to avoid a large number of corners and bends.

ideal position sewer pipe is strictly vertical. It is displayed through the interfloor ceilings to the attic and then to the roof. But in practice, unfortunately, it is not always possible to implement such a project.

Usually in private houses additional connecting elements are used. For example, an auxiliary pipe can be connected to the main fan riser, a separate pipe can be discharged at the same distance from the sewer risers, etc.

A key task at the system design stage is the correct calculation of the pipe diameter for the outlet. It cannot be larger than the size of the sewer pipe (110 mm). Ideally, the diameter should correspond to the size of both the central riser and the pipe connecting the inner and outer parts of the system.

When designing, special attention should be paid to the location of the riser. It should not be located near the climatic equipment, as well as the removal of combustion products from the heating boiler.

Installation of a fan riser presents no particular difficulty. However, some nuances should be taken into account.

For central sewage, it is advisable to use a 110 mm pipe. The same diameter should be for the ventilation riser. Usually plastic pipes are used. If the system consists of elements made of different materials (for example, a plastic riser and a cast-iron sewer), rubber adapters should be used.

To connect several risers, angles of 45 or 135 degrees are used. Horizontal sections should be laid with a slight slope (0.02%) towards the outlet of the drain. If you need to change the angle, a special bend with a rotation of 135 degrees is used.

Fixture replacement

The need to replace the fan riser or a separate part of it may be due to various reasons. For example, some owners during a major overhaul update all engineering systems in the house.

Replacing a riser is carried out according to the same principle as repairing a sewer. In this case, a number of conditions must be met:

During work in the premises, it is necessary to organize
Replacement of elements is carried out in a respirator and gloves (rubber).
Upon completion of work, it is necessary to check the tightness of the connections.

If necessary, simultaneously with the replacement of the riser, it is possible to carry out and sewer cleaning.

Regulatory requirements

There are several indicators that should be considered when installing a fan riser:

When removing a part of the pipe to the roof, the distance to the roof must be at least 30 cm.
If the house has an attic (mansard), the length of the riser is at least 3 m.
Between the pipe and the loggia or window opening, a distance of 4 m should be maintained.
The fan riser must be installed in a heated room. If this is difficult, the pipe must be insulated.
It is impossible to remove the riser through the chimney.
Protective elements from the ingress of birds, insects and precipitation are mounted on the upper part of the pipe from the outside.

Common Mistakes

Despite the relative ease of installation of the fan system, there are a number of rules, the violation of which can lead to negative consequences.

For example, some owners of private houses cut the pipe in the attic. As a result, unpleasant odors begin to fill it (or the attic), and subsequently penetrate into the house. Accordingly, the structure of the system loses all meaning.

Another mistake is installing the pipe along the outer wall. In this case, the likelihood of condensation is high.

Some homeowners install an additional device - a roof aerator. It provides improved traction. Meanwhile, the installation of this element is not always advisable. As a rule, the outflow of sewer evaporation slows down. As a result, again, unpleasant odors begin to penetrate into the premises.

Alternative option

It acts as a vacuum. It is mounted at the end of the riser directly in the house.

The valve is a small device made in the form of an end cap. Under a certain pressure, it lets air into the sewer, but does not release it back. At first glance, this seems to be a fairly effective solution to the problem. However, there are several important nuances.

The diameter of the air inlets is actually several times smaller than the size of the riser. Immediately there are doubts about the effectiveness of the device. As practice shows, in an apartment building with a fairly high load on the sewer system, one such device is not enough - at least several are needed. Accordingly, it is necessary to allocate enough space to install at least 4-5 valves.

Another problem lies in the design of the device. The valve will be effective if the gasket inside it is located strictly horizontally. Even with a slight misalignment, the valve will jam in some position (closed or open). In any case, this will lead to unpleasant consequences.

Valve principle

Inside the device is a special spring with little resistance. Tightness is provided by a rubber sealing gasket. The working principle of the vacuum valve is as follows:

Sewer drains pass through the riser and provide a vacuum in the system.
The valve plug opens.
Air is sucked in from the siphon and passes into the sewer network. Due to this, the vacuum is extinguished.
After the pressure has stabilized, the spring mechanism begins to operate. Due to it, the shutter is blocked, and air does not enter the room.

What should you pay attention to?

It should be said that installation cannot be called a full-fledged alternative to a fan riser. The fact is that the device clogs up quite quickly. When the siphon dries out, the efficiency of eliminating gases is significantly reduced.

If it is not possible to install a check valve on the riser, it can be mounted on another horizontal part of the pipe suitable for the riser.

SNiP

The problem of unpleasant odors in the room arises not only in the absence of a fan riser. Of great importance is the quality of sanitary equipment. When choosing it, it is necessary to check the presence of a hydraulic seal. Modern equipment in most cases is equipped with this device. However, there are models without it.

In addition, in the Russian Federation there is a special regulatory document SNiP. It lists the factors in the presence of which the installation of fan risers is mandatory.

Consequences of missing or incorrect installation

In simple terms, a fan riser is ventilation. Its key task is to ensure the flow of air into the sewer system. This, in turn, ensures the ability of the drain to quickly cope with the movement of volume and eliminate unpleasant odors.

In apartment buildings, it is impossible to do without a fan riser. Housing and communal services employees are very negative about any work affecting this part of the sewer system, even if the owner of the living space wants to install a vacuum valve instead of a pipe. Above, we have already considered the disadvantages of such a device. Do not insist on your own and remake the system. Otherwise, serious problems will arise. They will ruin the lives of all the neighbors whose apartments are located along this riser. The bad smell will spread very quickly.

Situations are especially dangerous when a plug is placed on the fan riser. In this case, the unpleasant smell will definitely go to the apartments, since he has nowhere else to go. It will penetrate into the premises through pipes and parts of pipes suitable for plumbing equipment, sinks.

Often the situation is exacerbated by the fact that flushing the toilet involves the discharge of a large volume of water into the system. She, acting like a piston, draws air behind her. As a result, the pressure is broken. To stabilize it, suction of water locks from the siphons of sinks, bathtubs, sinks in the kitchen begins. In the absence of water in the knees, unpleasant odors freely penetrate into the premises.

Another problem is the clogging of the sewer network. Frequent pollution is the result of the lack of a full-fledged air flow. The system will no longer cope with its functions, and the owner of the premises will have to clean the sewer very often.

The owner of a private house, of course, does not experience the restrictions that burden the residents of apartment buildings. He can choose whether to install a fan pipe or not, whether to use vacuum valves instead. However, not all owners of private houses have the necessary skills and have the necessary tools at their disposal.

To prevent possible problems, it is advisable to entrust the installation of the riser, and preferably the entire sewer system, to professionals. Specialists will develop a project taking into account the wishes of the customer and the features of the structure. In addition, they will select the most suitable materials for mounting the system.

Installation, of course, can be carried out independently. In this case, it is advisable to first consult with friends who have already installed the system. If plastic elements are used, then one person can handle the installation. The weight of pipes, even long ones, is quite small. To install cast-iron elements, you will have to use someone's help. In this case, the installation can be carried out by two people.

Conclusion

The sewerage system is considered one of the main engineering networks in the house. Its efficient functioning ensures comfortable living regardless of the time of year.

It should be said that the systems can be implemented using not only plastic, but also cast iron pipes. They are used, as a rule, in areas with harsh climatic conditions. In regions with a milder climate, it is more expedient to use plastic pipes. If necessary, they can be insulated with any suitable material. A wide range of different heaters is presented in construction stores. Mineral wool is considered the most common material for pipe protection. When using insulation, it is important to provide protection against getting wet.

When installing a fan riser, it is important to comply with the standards established by SNiP. The pipe next to the window will not look very aesthetically pleasing. In addition, the further it is located from the opening, the less likely it is for odors to enter the room.

After installing the riser, it is necessary to periodically check its condition. As practice shows, plastic pipes serve for a long time, but there is always a possibility of clogging. The check can be done fairly quickly. The whole system is collapsible, you can easily separate the elements.

A vent pipe is a sewer component, without which it is impossible to equip a bathroom. It is designed to communicate the sewer riser with the atmosphere, prevents the formation of wastewater and the appearance of an unpleasant odor in the bathroom.

The toilet drain pipe installed in the toilet prevents underpressure in the sewer system and ensures uninterrupted operation of water locks. In our material, we will understand what kind of fan pipes are, and also talk about the rules for their installation.

Fan pipes are classified according to the structural material used in the manufacture of products.

The classification divides the fan pipes into 2 types:

metal;
plastic.

The metal (cast iron) version can be installed in a sewer system made of a similar material. Plastic products can be installed in both plastic and cast iron pipelines.

When installing a plastic element, a flexible sewer pipe, a monolithic elbow or a compact adapter is obtained. Cast iron products do not have flexibility and do not differ in a variety of shapes.

What is a fan pipe used for?

According to the building codes in force today, the process of building a sewerage system for a one-story house can be carried out without a fan pipe. This is due to the small number of one-time drains.

If the building consists of two or more floors or the housing is equipped with several bathrooms, then a fan pipe is required to ensure stable pressure in the sewer system. This element connects the riser to the atmosphere, maintaining a stable atmospheric pressure even in the event of a volumetric release of water from the toilet tank, which provokes a vacuum in the outlet line.

According to accepted building codes, in a one-story building with one bathroom, there is a minimum amount of drains, so installing a vent pipe in the bathroom is optional.

If several toilet rooms are equipped in the living room, then the situation changes dramatically and a vent pipe installed on the toilet is a vital necessity.

This rule applies in the following cases:

the house has 2 or more levels, which are equipped with a sewer system and water supply;
cross-sectional diameter of the sewer riser - 50 mm;
there is a pool or water equipment inside the building that drains a significant amount of wastewater into the sewer;
The septic tank is located close to the house, which can cause a rather unpleasant odor.

In the above cases, vacuum without a vent pipe can lead to the rapid emptying of the siphons under the toilet or sink, which will ensure direct contact of the "atmosphere" of the septic tank with the microclimate of the room.

Thus, the installation of a fan product in the sewer system ensures a stable pressure in the outlet pipeline and maintains the integrity of the water drains in the siphons under special drain holes that cut off the unpleasant aroma of septic tanks from the home microclimate.

The construction of a sewerage and ventilation system with fan pipes is rational in the following cases:

when installing a sewer riser in a private house with a diameter of 50 mm;
if the house has two or more floors, each of which has bathrooms;
a private house is equipped with plumbing equipment, for example, a pool that generates powerful water flows;
an autonomous sewerage system is located next to the residential building.

Toilets with direct (vertical) outlet to the floor are mounted using special spare parts. The sewer interchange is usually located under the floors, and the pipes do not require walls and partitions.

Plumbing installation with horizontal outlet

Connecting toilet models with a direct (horizontal to the floor) outlet is relevant for the conditions in our country. This is due to the fact that the bathroom is tied to a specific wall of the toilet room due to the specific wiring of sewer pipes in typical Russian houses.

Since the release in these models is directed backwards, it is located in the back of the product. The outlet pipe is attached to the pipe using a sealing cuff.

During installation, special attention should be paid to fixing the plumbing equipment to the floor of the bathroom. The legs of the bowl of sanitary ware with a horizontal outlet have specially made holes designed to securely fix the toilet bowl to the floor.

Connecting plumbing fixtures with direct outlet ends with an installation process during which screws and dowels are used. Fastening must be carried out carefully, since in the case of a strong “pulling out” of the screw, the integrity of the surface of the sanitary ware can be damaged.

Installation of plumbing equipment with an oblique outlet

The process of installing and connecting plumbing equipment with an oblique outlet is carried out in stages:

Before connecting plumbing to the sewer system, the outlet of the device with grooves located inside should be lubricated with a mixture of red lead and drying oil (or sealant).
From above it is necessary to carefully wind the resin strand. The tip of the 0.5 cm long process must remain free, since the ends of the strand can fall into the hole and cause clogging.
The wrapped resin strand is lubricated with red lead.

Then the toilet bowl is installed, during which the outlet process is fixed in the socket of the sewer pipe.