Installation of ventilation for sewerage in a private house. Ventilation of sewerage in a private house - the path to comfortable living Exhaust hood for sewerage in a private house diagram

Sewer ventilation in a private house is an integral part of communication networks. Owners of private houses, in the process of arranging a wastewater disposal system, believe that ventilation for sewage should be installed only in a building of a huge area and with a large number of plumbing fixtures.

In practice, sewer extraction in a private house, which ensures the entry of clean air and the removal of gases with an unpleasant aroma, must be thought out for any building. The differences between the systems will relate to design features, depending on individual project construction.

Sewer ventilation contributes to a uniform balance of pressure values ​​in the drainage system. Due to this circumstance, the owner will avoid the spread of a stinking odor throughout the living rooms and will receive an excellent level of sound insulation, eliminating the unpleasant noise of water moving through sewer pipes.

Ventilation options

Sewer ventilation in a private house should be installed regardless of how many floors and plumbing fixtures there are in the building. In this matter important rule is the development of a scheme.

Ventilation can be done in two ways:

• Use fan pipes in your work;
• Use vacuum valves.

Determining the main details must begin with understanding that current rules construction contain several conditions that indicate the use of only vent pipes in the work. These conditions include:

• The number of floors in the building is two or more, and the drain points will be located above the first floor.
• The internal circumference of the riser pipes exceeds 50 centimeters.

In any other situation, the owner can use the simplest schemes for ventilation. It turns out that making a decision about using fan pipe in the pipeline, where it may not be, can only be done by the owner of the house. It is important to remember that experts recommend using more than one valve device to improve the efficiency of the drain, because such devices will not guarantee complete blocking of unpleasant odors from the sewer, as well as sound insulation.

In addition to the advantages already mentioned, sewer ventilation from waste pipes will contribute to the normal functioning of the waste system, since in such a device drying out of the siphon poses less of a danger.

Loss of water occurs frequently. Especially in country houses, where plumbing equipment is used for its intended purpose several months a year. In this case, the water seal dries out. A sewer vent helps warm air rise and exit through the pipe. When the siphon dries out and stops doing its job of preventing the spread of aroma in the room, and there is no ventilation in the system sewer riser, then the smell will spread throughout the house very quickly.

Rules for installing vent pipes

Installing ventilation in the sewer system requires compliance with certain rules and recommendations..

1. Parts for ventilation must be selected taking into account the same material from which the sewer pipes are made. This circumstance makes it possible to perform trouble-free sealing of joints. Plastic is best suited, since due to its low weight, such pipes are easier to install in a vertical position.
2. The parameter of the inner circumference of the ventilation outlet must be no less than the same parameters of the widest riser.
3. During installation, carefully connect the riser and fan terminals in unified system. When the distance between adjacent risers is too large, then you will have to install several fan parts. Think everything through possible nuances The question of how to make sewer ventilation in a private house should also be found in the construction drawings. This practice can significantly reduce the likelihood of unpleasant situations during installation.
4. To install ventilation, it is worth considering the presence of special hatches and channels.
5. When installation work are carried out already in the constructed building, the installation of system elements must be carried out through the walls. Under no circumstances should the integrity of the floors be compromised, as these actions will reduce the stability of the house.
6. When developing a ventilation scheme, it is necessary to maintain the horizontal position window openings and balconies to the outer section of the pipeline. This value is at least four meters. If the requirement is ignored, there is a high probability of a stinking aroma entering the rooms.

Rules for installation on the roof

1. There is an option when exhaust pipe overlooks the roof of the house. In this case, the output height can be from 20 to 300 centimeters. This value depends on roofing structure. When the roof is flat, the part can be extended only 30 centimeters. For a pitched design, the given value will be at least 50 centimeters. If an attic space is located and used under the roof, then the value will be maximum and will be three meters. It is much easier when there is sewer ventilation in a private house without access to the roof.
2. If a fan part extends onto the roof from a living room or chimney, its height parameter cannot be less than other outlets.
3. Also, you should not install a deflector on the pipe, because it will not increase the efficiency of the system and will cause ice build-up on the parts due to condensate freezing in winter.

When to use a vacuum valve

The second option for arranging ventilation lies in installing vacuum valves. However, this method is recommended only when it is impossible to install vent pipes due to technical inconsistencies, or their installation is financially unprofitable.

The principle of operation of the device is to connect the sash and a spring with a low resistance value. When the device is closed, the airtight seal completely seals off the penetration of air masses. When a vacuum appears in the sewer (in the case of draining water), the valve automatically opens and air from the room enters the system, regulating the correct proportions. Once balance is restored, the sash closes again and creates an airtight seal.

Penetrate unpleasant aromas into the room through the sealed vacuum valve impossible. An obstacle to sewer odors when the valve is open is air flow, which moves in the opposite direction.

When installing ventilation with the installation of a vacuum valve, it is important to understand and be guided by some aspects of the functioning of this device:

• If the water seal dries out, the installed valve is unable to prevent the odor from spreading throughout the rooms in the house.
• The main location for installing valves is considered to be the riser. If installation is difficult in the specified area, then they can be installed on any horizontal section of the pipeline.

When selecting a ventilation equipment method, it is worth understanding that installing a water seal in any case will make the system’s operating efficiency much higher.

Atypical methods of arranging ventilation

Application non-standard solution, fully meeting the requirements sanitary standards and safety precautions, can be a solution in a situation where a sewer hood is installed already at the stage of a fully rebuilt building. In this case, the use of a standard ventilation arrangement can cause difficulties.

Installation on the external wall of the house

Ventilation system pipe outlet external walls the structure will not be able to spoil the exterior of the house, since it is visually similar to an element of a standard drainage system. The main difference will be hidden in the height of the upper part of the pipe, which, no matter how hard the owner tries, goes beyond the level of the roof of the house. To arrange this option for fan ventilation of the waste system, the most common diameter of products is used, equal to 110 millimeters. When a home owner selects a location for installation, he must remember the requirements for acceptable value distances between window openings and fan outlet. This parameter is four meters.

Fence installation

When installing fan pipes on a fence and fixing them with fastening elements, the same techniques are used that are typical for installation on the external walls of a house. The difference lies only in the greater distance of the outlet from the building itself. The specified installation method involves installation at a remote distance from neighboring plot, since removing ventilation from the sewage system is unlikely to please the neighbors with an unpleasant odor.

Ventilation to the septic tank

A ventilation system from the drain, which is led directly to the septic tank, is considered an ideal arrangement option in 50% of cases. To install drives and treatment plant There are a number of rules according to which such objects must be located at a distance of five to twenty meters from the house. This feature provides a guarantee to eliminate the possibility of unpleasant odors from the sewer entering residential premises. In addition, this withdrawal method is easy to implement, both at the stage of building a house and in the case of redevelopment or improvement of living conditions.

Is sewer ventilation necessary in a private house? Of course, the answer is yes. However, before implementation suitable scheme you should carefully consider all the nuances and operating conditions of the already equipped sewer system.

Video review:

Everything useful about sewerage -

Budget-friendly, but at the same time durable ventilation in a private house from sewer pipes allows you to quickly remove unpleasant odors and normalize the air flow in general. A properly installed structure protects the structure from fungus and mold, which, in turn, reduces the likelihood of developing diseases. A technically correct drawing will help you fully enjoy all the benefits of ventilation.

A unified approach to this issue No. While some focus on the possibility of building an efficient ventilation system in a private home at minimal financial cost, others call for attention to the durability of such a structure.

As a rule, previously used pipes quickly become unusable, but this, according to builders, is a very controversial point.

Much depends on the quality of the material and the sealing of the seams. The more accurately everything is done, the longer the ventilation from sewer pipes will last.

Speaking about the options for using such structures, the builders highlighted several aspects:

• In frequent house construction, the ventilation riser is made using a PVC pipe having a round or rectangular cross-section;
• Pipes are available in several color variations;
• The ability to create a ventilation system of any degree of complexity thanks to improved sealing characteristics;
• Environmental safety - all types of manufactured pipes are made on the basis of PVC, polyurethane and polypropylene.

An environmentally friendly, durable and versatile socket made from sewer pipes allows you to create a ventilation system of any degree of complexity in a private home. The main thing is to choose pipes with a round or rectangular cross-section.

Statistical charge: ventilation in a private house made of plastic pipes

One of the few significant stones in the garden of plastic pipes used to build ventilation with your own hands is physics. We are talking about static voltage that forms on inner surface products. As the air moves, it creates a friction effect similar to that seen when rubbing a metal stick against a wool surface.

The charge level does not pose a threat to life and health, but there is another significant drawback:

• The more air passes over the inner surface of plastic pipes, the greater the charge is formed;
• If it is not quickly removed, the surface acquires insignificant magnetic properties;
• Despite the relatively low magnetic potential, the charge is enough to constantly attract dust and dirt;
• In a few days, the inner surface of the pipe will be covered with a thick layer of contamination - a breeding ground for pathogenic microorganisms;
• Installing pipes with mandatory treatment with an antistatic agent will help to avoid such a development.

The presence of a slight static charge on the inner surface of the pipe is a problem that must be resolved before installation. It is enough to treat the pipes with a small amount of antiseptic so that it does not become a magnet for dirt.

Safe sewer ventilation in a private house: diagram

Continuing the topic of pipe processing, it is worthwhile to dwell separately on the sanitary and hygienic component. If you plan to use used pipes or the system is located near a latrine, you should take a sufficient amount of septic tank and treat the surface. The same applies when installing newly purchased pipes.

After this, the process of constructing a ventilation system in a single-story or two-story house as follows:

• The preliminary pipe laying scheme should ensure a temperature difference;
• The larger the specified parameter, the more actively the hood works;
• On the roof, the ventilation pipe is subject to mandatory insulation, otherwise condensation cannot be avoided;
• Another way to protect the ventilation system from dampness is to install an exhaust fan;
• If ventilation is necessary in a bathroom or toilet, then in this case you need to calculate the minimum required height of the structure;
• Insufficient height or its excessive value is not in the best possible way will affect the freshness of the air.

A technically correct diagram is needed to calculate the power of the entire building. The power of a bathroom or living room hood depends on different temperatures outside and inside. If this is significantly significant or insufficient, you will need to install a shut-off valve-regulator.

We install ventilation from sewer pipes with our own hands

In a permanent building where a constant inflow system is required fresh air, you must first build the brickwork.

Its task is to insulate one of the ends of the pipe and ensure the stability of the system.

If we're talking about about a frame or wooden private house, then in this case brickwork will provoke a rapid discharge of incoming air.

In this regard, we can limit ourselves to the following practical recommendations:

• The sewerage and ventilation system is built using pipes with a smooth inner surface;
• If you plan to use a cesspool, then in this case it is necessary to isolate both pipe systems from each other;
• Availability sewer well is mandatory when it comes to seasonal use of the system.

Ventilation in a private house from sewer pipes (video)

The construction of a ventilation system based on sewer pipes is a budget-friendly and durable way to ensure a flow of fresh air. The success of the project largely depends on correct calculation pipe cross-section diameter, required draft and room area. In this case, a sufficient temperature difference is created to provide the minimum required draft.

Private houses built taking into account modern projects, as a rule, are equipped with a sewerage system. This system is designed to play an important role - to radically improve the sanitary and epidemiological situation indoors. At the same time, as part of the implementation of such projects, sewer ventilation in a private house is also desirable.

It is projects with ventilation of sewerage systems that guarantee complete comfort of the home and contribute to normal operation lines of household wastewater. Which ventilation schemes are most effective and how to implement them in a private home - this is exactly what we will talk about in our article.

We will also analyze the features of installing the components of sewer ventilation, paying attention to the norms and rules that should be observed in this case.

Private residential buildings, unlike municipal housing, have individual characteristics. Therefore, the sewerage scheme of a private house cannot always be compared with standard municipal projects. You can only borrow individual solutions.

City municipal real estate is required to be equipped internal sewerage with ventilation. Private housing construction projects often exclude this approach.

As a result, an important function of sewerage operation is disrupted - blocking the release of sewer fumes during inner part premises.

Modern housing projects in the private sector are being implemented whenever possible with a connection domestic sewerage to the centralized highway. Autonomous circuits, however, are predominant in private homes

The issue of ventilation of sewer networks is considered, as a rule, in relation to. This includes all drain lines installed directly inside buildings.

At the same time, based on the classification of collected wastewater, sewer systems are divided into three types:

• household(household-fecal);
• rain ();
• production(industrial).

Household utility and fecal communications, in turn, are divided into centralized and autonomous systems. Many private house projects have been and are being carried out as an autonomous type.

True to modern stage In the construction of private residential real estate, its owners are increasingly trying to connect their home sewerage system to centralized lines. We recommend that you read all country house, popular among users.

Internal household communications traditionally contain the following plumbing fixtures:

• sinks and bathtubs;
• toilets, urinals and bidets;
• shower cabins.

This entire set is united by a pipeline system, which also includes ventilation risers, manifolds, connections, and other components designed to ensure the full functionality of the internal sewage system.

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Option #2 – fan pipe + end pipe

For private house projects, it is sometimes permissible to implement an installation diagram ventilation riser sewerage, in which the upper section of the pipeline remains in the attic area.

But in this option, the attic must have the design of an actively ventilated room, which is rare for private housing construction projects. Therefore, the scheme with pulling the sewer ventilation pipe through the roof of the building remains relevant.

Output through the roof is usually implemented according to the following plan:

1. The ventilation riser ends in the attic.
2. An end pipe is installed on the roof.
3. Connect the upper section of the riser with the lower section of the end switch using corrugation.

Installation of the end pipe on the roof is convenient and simple using an elastic polymer adapter. This strong, durable element has a round shape (there are also square ones), and due to the stepwise change in the diameters of the passage, it can be easily adjusted to a pipe of a specific cross-section.

You just need to cut off the excess part of the adapter material along the line of the required diameter.

An end pipe equipped with an adapter is inserted into a passage hole previously made in the calculated location of the roof covering. The lower cuff of the elastic adapter along the entire circumference of its junction is treated with sealant.

In order to enhance the effectiveness of natural traction on the upper end part fan boner additionally put .

A ventilation deflector is a device capable of increasing air draft due to the pronounced aerodynamic properties of the structure. The operating principle of such devices is based on the Bernoulli effect, when the speed of movement of air masses is directly proportional to the change cross section channel.

For sewer ventilation schemes in private houses, static (fixed) deflectors are often used. Less common, but also used.

This seemingly simple device plays a significant role in the operation of the ventilation system of the home sewage system. According to various estimates, the deflector gives an increase in traction by 20-30%.

Option #3 – sewer hood device

If sewer outlet is not equipped with a water seal or the action of the specified useful device is not enough, it is worth building and installing a sewer hood:

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Living in a country house in some cases is associated with a rather unpleasant effect associated with the absence or insufficient provision of a sewer system. Deficiencies may manifest themselves in the sound of water flow. These inconveniences in a private home can be eliminated using sewer ventilation.

This article covers in detail all the points relating to the arrangement of a ventilation sewerage system.

We will analyze in detail how to install a ventilation system, and what types it comes in (with vacuum valves, natural, forced, etc.), what types of its arrangement are available, the necessary materials and tools for installation, how to make a deflector and what are the disadvantages of ventilation in a private house.

Ventilation pipe installation diagrams

This reliable way get rid of the effects described above associated with the removal of odors through the ventilation system. At the same time, they disappear unpleasant sounds, since an additional air flow is formed, eliminating the siphon effect.

Several sewerage ventilation schemes are used in a private house:

• wall-mounted external location, in which the pipe is led outside the house and secured with brackets;

• remote location - the pipe is located at a distance of more than 5 meters from the house and is attached to any convenient object, such as a fence;

• installation of a ventilation pipe in the septic tank body, which is located at a distance of 5 - 20 meters from the house.

For all of these ventilation systems, it is mandatory to protect the upper end with a hood. Deflectors are most often used as a head, improving the conditions for purging the room.

Ventilation through a vent pipe

This term refers to a pipe that is a continuation of the riser. For installation, a revision is installed at its upper end, the continuation of which is the fan pipe.

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The upper end should be higher than the roof ridge and located at a distance of at least four meters from the nearest window. Otherwise, you may get hit unpleasant odor inside the living space.

Obviously, the cross-sectional size of the fan channel must correspond to the cross-section of the riser, of which it is a continuation. The most common size is 110 millimeters.

The fan outlet is, in fact, a ventilation option with an internal location. The main problem with such a ventilation installation is the moment of intersection with the ceiling and roofing pie . But construction market is fully equipped with devices for such a transition for roofs of any slope angle.

Ventilation with vacuum valves

The cause of unpleasant odors from the sewer system is a malfunction of the siphon valves in the toilet, sink or sink. This can happen during a volley discharge of wastewater in the riser.

For some time it is completely blocked waste water and a vacuum occurs in the riser. It naturally draws liquid from the water seal into the drain, after which a communication channel between the drain system and the living space appears.

This phenomenon is successfully counteracted by installing a fan pipe, which equalizes the pressure in the riser. However, let's imagine the process of installing it with the intersection of two floors. Troublesome and expensive!

Instead of such a device, you can use a vacuum valve, which is installed instead of the fan channel.

When the pressure in the riser increases, locking device presses tightly against the seat and prevents the penetration of air from it. At the moment the salvo portion is drained, the valve opens slightly, compensating for the change in pressure inside the system. Siphon valves are not affected by this.

Lid shut-off valve works only under its own weight and this is enough to perform the functions assigned to the device. It should be noted that as a result of long-term use, the cover may become contaminated with dust deposits on its surface, because it works in conditions high humidity.

Therefore, it must be periodically removed and cleaned of plaque. The installation location of the vacuum valve is directly on the top of the drain after inspection.

This device can only be used in heated rooms. Otherwise, it will freeze and will not be able to perform its assigned functions.

The valves present on our market are produced by various manufacturers in Russia and Europe. The price range is surprising, ranging from 170 to 1400 rubles. A careful study of designs and application practices does not provide justification for this phenomenon.

Natural ventilation of sewerage facilities

Ensuring spontaneous air circulation in the ventilation system drainage systems is ensured by the generation of heat in the mass of canalized products through the natural processes of their decomposition.

In this case, the generated gases have a higher temperature and rise upward, providing circulation and their release into the environment.

But they have one unpleasant feature - flammability.

Therefore, wastewater storage and accumulation facilities are flammable, and in large quantities can be explosive. .

Therefore, the presence of ventilation in such facilities is mandatory. Currently, the main materials for ventilation devices are plastic pipes with a diameter of 100-110 millimeters. The pipe from under the cesspool cover is brought out at a distance of 4-5 meters to a ventilated place.

To increase the efficiency of the extraction process, a deflector is installed on it. In addition to protecting the upper end of the pipe from clogging with leaves and other debris, this device actively enhances the air flow, although active exhaust through the deflectors only works in windy weather.

In windless regions, it is advisable to use axial fans low power to ensure forced removal of gases from the sewer.

External ventilation is arranged in the same way.

To eliminate strong odors in the most cesspool can be used chemicals.

Forced ventilation of sewerage systems

In accordance with existing construction standards, low-rise individual buildings can be used without installing a drain pipe. This depends on the number of residents and the number of plumbing fixtures in use.

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The size of the riser pipe also matters, because the siphons fail only when its cross-section is completely filled with waste. An alternative to a drain pipe is a vacuum valve, which reliably compensates for pressure drops in the sewage system.

Exhaust ventilation

As noted above, the main reason for the leakage of the sewer system is the failure of the siphon, as a result of which sewer odors penetrate into the a private house.

However, this is not the only reason. In houses that are visited periodically, such as a summer house, the reason for the siphon not working may be drying out. If the plumbing is inactive for a long time, the water in it dries out, opening the channel for sewer gases. In this case, visiting owners are greeted by an unhealthy environment in the house.

To eliminate this cause of sewer gas breakthrough, exhaust ventilation is installed in the house.

It can be located in those arranged during construction ventilation ducts, and if such are not provided for by the project - in square or rectangular pipes.

Along the entire length of such a channel, gratings equipped with a curtain mechanism are installed. It allows you to completely or partially block the outflow of air if necessary. The upper end of the ventilation pipe is brought above the level of the roof ridge and is protected from above by a cap.

Deflectors are often used as such shelter. When using them, the hood becomes forced, operating periodically only in windy weather.

However, in low-wind regions, deflectors are ineffective because they create draft only in the presence of horizontal air currents. Deflectors installed in an area protected from the wind are generally ineffective.

In such cases, drive fans must be used. Their power is small and for a small private house a device of 200-250 watts is sufficient. There are several types of fans:

• field - in them an impeller is installed on the motor shaft, enclosed in a casing in the form of a snail;
• axial - installed directly in the ventilation pipe, the air flow is formed under the influence of a screw.

The use of exhaust ventilation guarantees constant fresh air in all areas of the house.

Country house ventilation schemes

Current trend suburban construction provides maximum tightness of the premises. Of course, this has a beneficial effect on financial and economic indicators operation of the building.

But, at the same time, the conditions for air exchange and safety of living are difficult. After all, one person needs about 30 cubic meters of air per hour for normal life.

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For the correct formation of ventilation systems, it is necessary to take into account their certain features:

1. Indoor air quality is significantly affected by external conditions region of construction and the composition of materials used in the construction process.
2. Management methods are important heating systems, air conditioning and ventilation devices.
3. Products cannot be used on the farm household chemicals, highlighting harmful substances and not recommended for use in confined environments.
4. For premises for various purposes, there are specific standards for the composition of the air in them - for bathrooms, bedrooms, gyms and others.
5. It is necessary to take into account the physiological characteristics of each person living in the house, for example - the presence allergic reactions for certain substances and materials.

For high-quality ventilation In the premises of a country house, combined supply and exhaust systems are used, which operate according to the scheme below.

Difficulties in ventilation may occur due to various reasons, but most often this happens due to long horizontal sections in the pipeline system, as well as large quantity turns. In this case, forced ventilation of the premises is used.

Materials and installation of sewerage ventilation

For sewerage in a low-rise country house, the same materials are used as in urban housing. Basically, this is true - polyethylene pipes are the most popular, but their sizes are minimal.

Thus, pipes with a diameter of 110 millimeters and corresponding fittings are used for the riser. Naturally, the fan outlet is made with the same pipe. If a private house does not have a special shaft for such ventilation, a turn is made from the upper end of the riser and the air duct is routed along the wall of the house.

The upper end of the pipe with the tip is brought out above the roof ridge. For a small building, the ventilation pipe in the size of the riser is chosen to be 50 mm, but such decisions are rarely made. In this case, flooding with the drain is too likely, with subsequent loss of the water seal in the siphon.

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How to make a deflector with your own hands

Do-it-yourself sewer ventilation in private houses is usually accompanied by the use of a deflector. It is necessary to increase the traction force in ventilation ducts.

To make a deflector with your own hands, you need to complete a series of consistent actions:

1. Select its model.
2. Make drawings in dimensions, scale 1:1.
3. Prepare necessary tools.
4. Select and purchase materials.
5. Make patterns of parts from cardboard.
6. Assemble a mock-up of the deflector from cardboard, and, if necessary, change the dimensions of the parts.
7. Using the patterns, make the deflector parts.
8. Assemble the device in metal.

Model selection

For self-made it's better to choose the best one simple model, providing efficient extraction from a sewer in a private house.

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The basic size is the diameter of the fan pipe, from which the parameters of the remaining parts are determined.

Development of drawings

First, you need to draw an assembly drawing of the product and calculate the connecting dimensions, as well as the parameters of each part separately. Then you need to scan all the parts in actual sizes and natural scale. The drawing must be transferred to cardboard.

Preparing tools

As the deflector is designed, the technology for its assembly and the tools that will be needed in the manufacture of the product are thought through. But in any case you need to have:

1. The simplest drawing tool for creating technical documentation is a ruler, 30 and 45 degree squares, a protractor, and a compass.
2. Bench shears for cutting sheet metal.
3. File – for removing burrs.
4. Marker used when marking parts.
5. Drill for drilling a hole for fasteners.
6. Metal drills.
7. Bench hammer.
8. Bench vice.
9. Awl.
10. Cardboard scissors.

The listed tool is available to the practically practical owner.

Materials for making the deflector

The main material is sheet metal. The selection criterion is its availability and financial capabilities. You can make a deflector for ventilating a sewer riser in a private house with your own hands. To do this you will need:

1. Stainless steel sheet with a thickness of 0.25-0.5 millimeters. This the best option choice in terms of durability.
2. Aluminum sheet 0.4-0.8 millimeters thick. In terms of durability it is not much inferior to stainless steel.
3. Sheets of other metals - copper, titanium, zinc and the like.
4. Steel sheets made of galvanized steel with a thickness of 0.4-0.6 millimeters. The most common material in terms of the ratio of price – quality – availability.
5. Cardboard 1.0-1.5 millimeters thick for making mock-ups and part developments.
6. Standard aluminum or blind rivets.

As you progress, you may need other supporting materials.

Making a fixture

First of all, you need to cut out mock-ups of the device parts from cardboard. Then a mock-up of the deflector is assembled from them; the parts can be fastened with a stapler.

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After checking all the dimensions on the cardboard components, holes are made with an awl in the places where the rivets are installed. The model is dismantled, and metal parts are cut out using the patterns. Following the marks of the holes from the awl, you need to drill holes for the fasteners used.

Significant deficiencies in sewer system ventilation

Insufficient ventilation of the sewer riser in a private house manifests itself very quickly in the form of unpleasant odors. And the most common reasons for this are the following:

• insufficient size sewer riser pipes, leading to the failure of siphons;
• long downtime plumbing equipment, leading to their drying out;
• occurrence of cracks in sewer pipes in case of violation of the rules of their installation.

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A sewer hood in a private house is crucial in creating comfortable conditions for accommodation.

Not many residents of country houses can boast that when high temperature or strong wind the treacherous sewer “spirit” does not penetrate their home. It is clear that organic matter decomposes over time, resulting in foul-smelling gases. Moreover, often each flush of water is accompanied by a kind of gurgling in the depths of the sewer. This is explained by pressure drops in the system and, as a consequence, the formation air jams. To get rid of all these problems, you will need.

Even more - ventilation is required regardless of the type of sewer, be it individual or centralized, with or without isolation. Thanks to this, not only will a permanent supply of fresh air be ensured, but it will also restore normal pressure, so flushing will not be accompanied by any noise.

Ideally, you should also take care of the hood at the house design stage. In reality, they think about it only when comments are increasingly heard among guests about the persistent amber on the site or in the house itself.

Ventilation schemes

Sewage ventilation can be two types – internal and external. Let's look at the features of each type.

Internal ventilation

If sewer ventilation is thought about in advance, when drawing up a project, then it is often done inside the house. At this time, the riser is displayed on the lid under the guise of a fan pipe, which, as it were, continues it. The diameter of both pipes should be the same; if the riser is 10 cm, then the pipe will also be 10 cm. In addition, the drain pipe should be located away from the windows (at least 4 m) so that unpleasant odors are eliminated in a timely manner.

Regarding the height of the drain pipe, it all depends on the type of roofing and can vary between 20 cm and 3 m (this is regulated by SNiP). If the roof is flat, then the minimum elevation will be 30 cm, and if it is pitched, then all 50 cm. It is installed on top of the pipe deflector– it will not only enhance natural draft, but also protect ventilation from foreign objects and precipitation. In short, thanks to the deflector, the efficiency of the hood increases several times.

Note! Experts do not recommend combining sewer ventilation with general ventilation. ventilation system or a chimney.

Meanwhile, approaches to several risers at once can be connected. If the drain pipe will be led out of the wall (from the side), then it cannot be installed under the arch, since in winter there will be a risk of ice or snow falling off.

External ventilation

Described above traditional scheme, which can be resorted to exclusively at the design stage. But if the building has already been built, then it will be very problematic to implement such a scheme, so it is recommended to equip external ventilation sewerage. There are three ways to do this.

Non-standard approach

If you wish, you can avoid such an expensive procedure for arranging ventilation, and instead do it yourself ventilation valve, fortunately its design is extremely simple. There are several ways to make such a valve, but in each of them only available materials are used, which should be found in every owner.

Note! The main advantage of the valve is that it can be used to block movement warm air from the septic tank, due to which frost will not appear on the sewer channels. If you use simple risers, then freezing of the pipes is inevitable.

How to make a valve yourself?

It can be done as follows.

1. Take a spring from an ordinary handle and a self-tapping screw of the appropriate diameter.
   The length of the screw should be 4.5 cm.
2. Next, a circle with a diameter of 5 cm is cut out of plastic.
   A hole is made in the middle of the circle into which a self-tapping screw could easily fit,
   and the spring at that moment rested against the circle.
3. Then another washer is cut out, but it is foam rubber and has a diameter of 6 cm.
   A hole is drilled in the center. Both circles are glued together with Super Glue.
4. Next in the tee cover (it is located at the outlet and has a diameter of at least 10 cm)
   Three holes of 5 mm each are drilled. All holes should be 2.5 cm away from the center.
   All burrs are removed, another hole is made in the center using an awl,
   where to screw in the screw.
5. The entire structure, which was described in the previous paragraphs, is attached to this self-tapping screw.

Prices for ventilation valve for sewerage

ventilation valve for sewerage

Functional check

Upon completion of installation you need to check the functionality of the valve. To do this, you need to blow into each of the drilled holes. Ideally, air should pass through them unhindered; if not, the self-tapping screw is turned out slightly to relieve the spring pressure.

Once the test is complete, you don't have to worry about whether the valve will contain gases from the septic tank.

Features of sewer ventilation in a multi-storey building

Sewerage design apartment building must deal exclusively with specialized companies which will take into account:

• number of floors;
• method of wastewater disposal;
• number of drainage points.

Otherwise, the ventilation of high-rise buildings is practically no different from that in a private house. An example project can be seen in the diagram below.

In such buildings, a common riser leading to the roof is also used for ventilation.

Note! For greater efficiency, a vent pipe can be installed on the top floor. It must be connected at ceiling height last floor, but not lower technical floor(attic).

If it starts apartment redevelopment with a decrease/increase in the number of connections to the common house riser, then you need to draw up a project in advance and coordinate it with the management company. Only after this you can start working, otherwise Unauthorized connection of new devices can lead to deterioration of sewer ventilation throughout the house.

Features of ventilation in the bathhouse

IN in this case main feature lies in the specifics of the room. The point here is the limited size, which is why the riser is often installed in conditions elevated temperature. In this case, the pipe will perform heat exchange with the room, which will cause the temperature of the exhaust gases to increase with their further expansion. You need to think about all this before purchasing a fan pipe and choosing the diameter of the riser.

You might be interested in information on how to do

By the way, minimum diameter the riser must be 11 cm, otherwise the gases will not be removed from the system in a timely manner and, therefore, will penetrate into the room.

Also pay special attention to the material of the ventilation pipe. It must not only be durable, but also maintain its performance properties under high humidity and temperature changes.

The most common questions

Often people cannot decide to install sewer ventilation. The reason for this may be doubts about the feasibility, as well as some unclear points.

Question one: will ventilation be able to perform its functions in the summer, when organic matter decomposes with particular intensity?

Of course he can. Mainly due to heat and air exchange between the septic tank and environment due to the difference in temperature. The water in the sewer will always be warmer. In addition, this also leads to a difference in pressure, due to which the installation will be effectively ventilated.

Question two: why did unpleasant odors begin to penetrate into the house again some time after the ventilation was installed?

The water in the siphons dries out, allowing air to pass through, which can happen if the sewer system has not been used for a long time. This can be eliminated in several ways (we have already examined each of them in detail):

• install a ventilation valve;
• attach the fan pipe;
• change siphons to used ones O bigger ones

Question three: if the riser is not insulated, will it freeze in winter?

The drains, we repeat, are always warmer than the air outside, so the riser will not freeze in any case. The main thing is to use the sewer regularly. Although in individual regions the riser is still insulated (if it is located outside), using several b O bigger pipe. But this issue needs to be discussed with specialists.

As a conclusion

Sewage ventilation will provide maximum living comfort and will prevent the penetration of unpleasant odors, but only if the work is properly designed and carried out. Perhaps you can come up with your own, more simple diagram ventilation – share it in the comments, users will be interested to know about it.

Video - Sewer ventilation in a private house