The sewage system must be connected to the ventilation system. This is necessary to maintain constant pressure in the drainage system and ensure drainage unpleasant odors. A fan riser in a private house is used precisely for such purposes.
Why is it needed?
To prevent sewer odors from entering the living room, siphons are used in toilets and sinks. After draining the water, a certain amount of liquid remains in them. The level of this water depends on the pressure in the drainage system. But, if at one moment a vacuum forms in the vertical riser, then the water will leave the siphons. Because of this, the operation of the system will be disrupted.
This can happen if the throughput of the siphon is equal to the amount of one-time drainage. For example, with a toilet outlet diameter of 110 mm and a washbasin outlet of 50 mm, a 150 mm siphon is used. Then, when flushing the toilet and sink, the siphon will completely close.
If the house is one-story, then installing a vent riser is not necessary, but in a private two-story building it is necessary. How to determine whether a drain is needed in a two-story house:
- The house has a swimming pool;
- The plot is small and there is a drainage well or storage tank in close proximity to the house;
- The main riser has a small cross-section, smaller than that of some consumers (say, a toilet).
Rules for installing a drain pipe
There are certain SNiP requirements for installing a vent riser in a country private house. The most important rule is that the diameter of the main sewer pipe (main riser) must exactly match the size of the ventilation communication. This is extremely important, otherwise sewer drain fecal waste may enter the vent.
There are several types of fan pipe:
- Vertical;
- Horizontal;
- Angular.
Depending on the requirements for the sewer outlet and the type of sewer system, a scheme for its installation and wiring is selected. Therefore, fan pipes can be of any design.
The slope of the drain pipe is also very important. The minimum figure is 30 mm for each linear meter riser, with a diameter of 50 mm. It turns out that if the total length of the fan pipe is 3 meters, then optimal slope will:
3000 / 30 = 100 mm. Of course, this indicator is standardized, but experts start from this standard. The slope for a 110 mm pipe is calculated in the same way - 20 mm is used. Another key rule is that the larger the drainage cross-section, the smaller the slope. The maximum permissible diameter for a fan riser is 200 mm, and its slope should be no more than 7 mm.
Also, in addition to the communication itself, you need to install a fan - it will pump air and return air valve. An aerator or valve is a device that prevents the penetration of fecal matter into the pipes of toilets and sinks. It consists of a membrane, a lid and a locking device. When the mass pressure in the main riser reaches its maximum, the membrane, under the influence of pressure and the locking mechanism, changes its position. The waste flows through the valve and into the sewer. They cannot return back, because the diameter of the cover exceeds the cross-section of the pipe.
And the last requirement is that it is very important that the ventilation outlet from the sewer is discharged directly into the atmosphere. Then the odors of the wastewater will quickly and easily dissipate. To ensure quick “refreshing” and constant pressure, the end should be in a cold place - unheated, and the beginning of the communication should be indoors.
Installation
Before starting work, a plan is developed. Level ventilation riser must be located above consumer outlets in the sewer system. In addition, the location of the valve and the slope of the bends are calculated separately.
Let's look at how to do it yourself:
Video: Features of installing a fan riser.
Periodically, the ventilation fan outlet will have to be cleaned. To do this, you can call specialists, or do all the work yourself. To clean, you will need a flexible rubber brush or a regular plumbing cable with a brush at the end. This procedure must be carried out every year.
Price overview
You can buy a drain pipe for a private home at any plumbing store. Manufacturers offer bends made of PVC and steel. Depending on the material from which the outlet is made and its diameter, the price of this communication varies significantly. In addition, it can be socket or fitting (installation of the latter requires the installation of an additional fitting).
Installation of independent or centralized system Disposal of wastewater is impossible without installing a special drainage system. The element blocks the return flow of gases into the bathrooms, acting as a connecting component between the septic tank and the atmosphere.
The technology for installing the riser is quite simple. But before you start work, you need to understand the principle of operation of the ventilation duct and understand how to properly install the vent pipe in the house. The answers to these questions are described in detail in the article.
The fan pipe is a structural element that connects the pipeline with a specially constructed ventilation duct. Its key purpose is to remove gases and odors from the sewer system.
The presence of a ventilation riser in the system ensures that there are no unpleasant loud sounds in living quarters that occur when water is drained, and the “fragrance” of sewage sewage (+)
The length and shape of this element can be arbitrary. There are models of vertical and horizontal design, beveled at right or acute angles.
The principle of operation of the vent pipe is simple. Wastewater, getting into the vertical riser, they create a vacuum in the cavity of the pipeline. It can be partially compensated by water, which acts as a hydraulic damper in the siphons of installed plumbing fixtures.
But if a vertically installed riser has a large length and at some point a one-time powerful discharge of waste liquid occurs, then sewer pipe a vacuum arises.
The formed piston from the liquid with all its strength and characteristic “smacking” sound at one moment tears off and breaks through the hydraulic dampers of the plumbing, emptying the siphons.
As a result, water is completely sucked out of all water seals. Therefore, there are no obstacles left. Due to this, they quickly spread throughout the building.
This effect also occurs when the contents are quickly pumped out by a fecal pump. cesspool or a septic tank into the tank of a sewer truck
The trouble is that the matter is not limited to the appearance of an unpleasant “fragrance” in living rooms. The natural process of decomposition of feces is accompanied by the release of gases harmful to households: methane and hydrogen sulfide.
If the system is equipped with a fan riser, at the moment of “throwing in” there are no such consequences, since the vacuum created in the collector simply does not have time to break through the hydraulic valves in the siphons.
Threads prevent this atmospheric air, which, simultaneously with the occurrence of vacuum, are drawn into the system, blocking the penetration of gases into the room when draining and pumping out the septic tank.
Image gallery
When installing a drain pipe with a cross-section of 110 mm, the check valve is connected using an adapter.
One of the ways to install a check valve in the cavity of a waste pipe and then connect it to the sewer outlets of the system
An important point: all operations for installing a vent pipe should be carried out on dry surfaces. At the stage of fixing the check valve, you should not use silicone sealants and any kind of lubricant.
Typical installation errors
Most often, a situation with the formation of a vacuum in the system occurs when pipes are used in its arrangement different diameters. For example: the toilet is connected to a pipe D 110 mm, the bathtub is connected to a pipe D 50 mm, and the hole cistern– D 70 mm.
Unpleasant stench in bathrooms often appears when plumbing fixtures are equipped with siphons that have insufficient volume. This occurs due to the fact that when the devices are not used regularly, the remaining water in the siphons dries out, removing the hydraulic valve and opening up free access to the spread of “aromas”.
By correctly calculating the dimensions of the drain pipe and installing it in compliance with all installation rules, you can almost completely eliminate the possibility of accumulation and the likelihood of sewer gases entering the house. And then problems with operation sewer system definitely won't happen.
Do you have practical skills in installing a ventilation drain pipe? Share your accumulated knowledge or ask questions on the topic - the contact block is located below.
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What are fan pipes?
Many people have heard from friends and acquaintances that it is necessary to create an installation diagram in a private home. This is due to high-quality ventilation of the toilet, bathroom, kitchen, and entire house, which can be built using a vent pipe.
What is a fan pipe, what can it be, how to install it?
The drain pipe is connected to the sewer system and is designed to perform a ventilation and water seal function with subsequent outlet to the roof. During operation of the sewer pipeline, gases accumulate in it. If you do not install a waterproof barrier, they will penetrate into the living space, which is dangerous for the lives of the inhabitants of the apartment. In addition, an unpleasant odor will spread throughout the house.
It can be of any length, shape, depending on the installation location and the size of the sewer line. This part exhaust system can be straight, angular, placed in horizontal, vertical directions.
To prevent unpleasant odors from entering your home, it is necessary to make a high-quality one. In such cases, it helps, for the manufacture of which plastic is most often used. However, elements of metallic origin were not completely replaced. Today, many people use cast iron in their homes, less often. Metal does not want to give up its positions.
Read with this article: How to bend and connect with your own hands. Review from “A” to “Z” of this product.
Possible schemes
Laying and replacing sewer risers does not allow mistakes in the process of planning and installing the system, otherwise the living space will be filled with an unpleasant odor. To prevent this from happening, in a private house you need to choose the right drain pipe design.
There are 2 installation schemes for exhaust systems:
- Horizontal.
According to this scheme, the outlet of the vent pipe must be carried out through a hole in the wall, and not through the roof. This scheme can be used in private construction if it is impossible to make an exit through the roof. The final outlet is covered by a grille rather than a deflector. - Vertical.
With this design of the fan pipe in a private house, the riser goes out through the roof.
There are three types of vertical outlet of the riser to the atmosphere:
- output at an angle of 90⁰. It is necessary to make two branches from the riser, one after the other, at angles of 90⁰, after which it will come out vertically upward through the roof;
- output at a slope of 45⁰. To directly exit the riser through the roof, it is necessary to alternately make a branch from the main riser, first at 45 degrees, and then at 135 degrees;
- the usual vertical type outlet, which will immediately continue to the roof and exit through it to the outside.
Important! The ventilation installation diagram in a private house must be correct, that is, in accordance with the appropriate diameter and in in the right place, anticipate the presence of the opposite, blocking the overflow of feces.
Use of cast iron elements
For several decades, the installation of exhaust ducts took place using cast iron risers. Today, cast iron fan pipes are becoming increasingly rare. But in vain, because using risers made of this material you can be sure of the quality of the exhaust and ventilation ducts. have a number of advantages.
They differ:
- strength. The rigidity and density of the alloy contribute to safe operation, which can be purchased at hardware store. They are used in the construction of private, multi-storey buildings;
- long service life. This is due to high wear resistance, which helps maintain excellent technical characteristics for many years;
- resistance to influences mechanical type. They are not afraid of accidental impacts, damage, or heavy loads.
Minuses:
- tendency to corrosion processes;
- difficulty of transportation;
- heavy weight;
- high price.
When repairing or replacing old cast iron risers, it is necessary to dismantle current system. It is not easy to do this if the sewer or exhaust line is located in hard to reach place. How to disassemble a cast iron pipe behind a toilet? It is difficult to carry out this procedure if tow with cement, aluminum or sulfur were used to connect the risers.
First you need to dismantle the parts that are located further from the riser. To do this, you should stock up on a chisel or a hammer with a plastic or rubber head. When you hit the chisel with an iron hammer, pieces of metal sharply bounce off the pipe and can fall into the riser, since cast iron is a very brittle alloy.
Having done everything preparatory work, start removing the cast iron fan or sewer riser:
- After destruction of this element system, gradually approach the crosspiece, leaving 30-35 cm of an almost broken part.
- Using the remaining piece, gently loosen it. If this does not help, then use a chisel to start removing the packing, loosen it again, and then remove the remaining fragment.
- If the system is condensed with sulfur, then it is necessary to take blowtorch or gas burner and start heating the packing. Before doing this, you need to cover the furniture and walls with a screen so as not to damage them. Preferably this work should be done by two people, since one must remove the heated viscous sulfur.
- After removing a certain amount of the heated mass, remove the remainder of the unnecessary part of the part.
An option is possible when you can use a grinder to cut off the rest of the line right up to the socket. This procedure will ensure not only a neat cut, but also a quick, convenient joining of the new one to the old cast iron riser.
Important! Cast iron fan pipe can be used in any extreme situations. This means that such a system will function normally under conditions of a wide temperature range at elevated pressure.
Work with cast iron sewer or sewer pipes, including drilling them, must be carried out with the utmost care. This is due to the increased fragility of the metal.
Over a long period of operation, as a result of corrosion processes, cast iron sewer risers become unattractive. Therefore, they need to be refreshed. cast iron pipe in the toilet?
For painting use acrylic, water-dispersion paint. The shade can be very diverse.
Some owners refresh cast iron risers oil paints. Before painting, you need to get rid of rust, old peeling paint, unnecessary debris, and dirt. Only after such preparation can you begin painting. A painted, restored sewer line will last for many more years.
Application of plastic structures
In private homes, when installing systems for removing air and various types of odors, they mainly use plastic vent pipes. They can be round or .
Risers used as fan risers are produced different sizes. When installing an exhaust or supply ventilation Fan plastic pipes with a diameter of 50 to 110 mm and a length of 3-4 meters are in demand.
If the plastic fan pipe in the ceiling is cracked, then it needs to be replaced. Repairing this part of the exhaust or ventilation line will not bring the desired result.
When carrying out this procedure, you should adhere to the sequence of work:
- using a hammer drill around the riser, expand the diameter of the hole (at least 2 times);
- use a grinder to cut the cracked element of the system approximately in the middle of the height so that it is convenient to remove both pieces;
- remove the cracked parts and put a new riser in their place;
- seal the hole around the installed element exhaust ventilation both from below in the ceiling and in the upper plane of the ceiling.
It must be said about the presence of flexible plastic fan pipes. To connect them to a solid part of the system, it is recommended to use rubber rings for sealing. For better fit into the socket and complete tightness, they must be coated with silicone before installation. When attaching such a section to the wall, metal clamps are used, which are characterized by increased reliability.
Important! Although silicone is an ideal substance for high-quality sealing, it should be remembered that the next time you dismantle it, you will have to put in a lot of effort to remove it.
Today plastic risers can be purchased at any hardware store or store.
Dimensions
There is no separate part called a fan pipe, regardless of size.
This design includes:
- regular tee;
- lid or grill;
- one or more pipes;
- safety valve.
The dimensions of drainage pipes for sewerage, as well as for toilets, depend on the specific conditions of their operation.
The following rules must be followed:
- You can use parts from any materials;
- The size of the pipes for the exhaust riser, including the length, may vary.
Today, the most popular are plastic fan pipes with diameters from 110 to 50 mm, regardless of other linear dimensions (length).
Using a 110x45 ani plast w4220 drain pipe, which can be of different sizes, it is convenient to connect the sewerage system to the toilet outlet. Such a detail will seem to glue the toilet bowl to the sewer riser, which will ensure that there are no leaks in the bathroom. The size of the toilet drain pipe depends on the diameters of the drain, sewer riser, and the distance of these elements to the wall or ceiling.
The diameter of the part must be such that the maximum possible sewer flows do not interfere with it. normal functioning. Sometimes ventilation and sewage systems are constructed from risers of different diameters. Then you need to use a special adapter.
There is a catalog where you can choose required parameters parts for arranging the exhaust system.
Important! Perfect option placement of the exhaust riser - the place where the internal and external sewers are connected.
Fan pipe ventilation
Current building codes state that one-story houses It is not necessary to install ventilation, since in such dwellings the one-time drains are small. Buildings with two or more floors must be equipped with such systems. This is due to the fact that with the help of such risers communication with environment, which means ventilation processes occur.
Many people ask: “Can the waste pipe be vented? And if so, how to connect the vent pipe to the ventilation?” We will give detailed answers to these and other questions.
When installing a vent pipe, it can and simply must be vented, which is most often done. To carry out this procedure, you must first build a ventilation duct.
It is necessary to anticipate the installation of a check valve.
Its purpose:
- prevents the return of drain flows;
- prevents rodents from entering the sewer and into the premises;
- corrects a sewer pipeline with an incorrectly installed slope;
- limits the entry of mechanical impurities into the toilet.
The principle of operation of the device is simple: after water comes out of the drain tank, it is triggered and the liquid enters the sewer system. When the valve is closed, unpleasant odors from the toilet and sewerage do not spread throughout the rooms, since the device is completely sealed.
Important! Install check valve immediately after using the toilet.
Although everyone is trying to install the exhaust system correctly, you can still smell an unpleasant odor from the sewer system in our houses and apartments.
Sometimes odors from the exhaust pipe are blown into the ventilation, since these two channels are located next to each other. To get rid of unpleasant odors, you need to install an aerator at the upper end of the riser. Thanks to this vacuum valve, the system will function perfectly.
Output to the roof
Not everyone knows how to ventilate the roof. This must be done, since the ventilation system in the attic cannot end. The drainage pipe must have access to the roof so that there is a connection with the street and the atmosphere. If the sewer is led to the attic, then all the unpleasant odors will be concentrated there. When the hood does not reach the roof, it is due to increased humidity in attic Mold will begin to appear, which will cause a lot of harm to the entire home. The vent pipe is mounted as on the roof multi-storey building, and one-story.
What to do when the drain pipe on the roof freezes? To prevent it from freezing on the roof, it is necessary to provide insulation around it. The cause of freezing is the formation of condensation, since warm air has the ability to rise up. The result is freezing of the walls with ice, which can lead to the blocking of the exhaust lumen and the cessation of the functioning of the entire system.
The risers are insulated with rolled heat insulators or “shells”, which should be securely fastened.
In some cases, it is impossible to carry out the drainage pipe to the roof. This is not a problem, since you can use horizontal diagram installation of an exhaust system. The end of the ventilation system will not be located on the roof, but will be vented through the wall into the air.
You can buy a roof vent pipe at a construction supermarket.
Important! Regardless of how the drain pipe is routed - onto the roof or through the wall, the system requires a check valve.
In order for ventilation systems to function for a long time and efficiently, when laying pipelines, you must adhere to the above-mentioned norms and rules. Only then will your home not be filled with unpleasant odors, but will constantly feel the fresh air.
About ventilation of concrete septic tanks
For sewerage on their territory, each owner tries to make a two-chamber concrete septic tank. These containers must be ventilated not only to eliminate unpleasant odors. If you design and make it correctly ventilation system in a septic tank, then by doing this you will make the stay of your family and residents of neighboring houses safe, comfortable, and enjoyable. You need to take care not only of yourself, but also respect your neighbors.
Such a structure is a habitat for bacteria that can quickly process organic waste coming from the sewer system. As a result, dirty wastewater turns into clean water and il. This biological-chemical process is accompanied by the release of a large amount of gas, which not only smells unpleasant, but can cause an explosion if a spark hits it. Conclusion: high-quality ventilation two-chamber concrete septic tank without a drain pipe it is impossible. For the full functioning of a conventional septic tank, it is also necessary to provide ventilation.
Video
When it comes to installing (or replacing) sewer lines, errors in planning or installation can lead to unpleasant odors. To avoid this, it is necessary good ventilation sewer riser.
This is realized using a fan pipe.
What is a sewer drain pipe, and how does this system work?
Fan pipe - section of pipeline that connects the sewerage system to the atmosphere(goes up through the roof). It branches off from the sewer riser and goes up through the entire house.
At the top (on the roof) it is covered with a fungus (head, umbrella) - so that precipitation and debris do not fall from above.
The waste flows through the sewer pipe from top to bottom. If you open the drain at one point (for example, drain the water in the toilet), then the water will pass through the system without any problems. If at the same time water drains from several plumbing points (toilet, bathroom sink, bathtub, shower, washing machine), then the riser will be filled to its full diameter.
This will create a vacuum, which will “pull” water out of the water seals, causing an unpleasant odor to appear in the bathroom - if there is no drain pipe in the house.
If there is one, then air will be sucked in from the atmosphere through its hole, and the pressure in the system will equalize. Thanks to this, the plumbing seals remain in place and do not allow the smell to penetrate from the pipes into the room.
Another solution to the problem is . It can be installed instead of a drain pipe, or it can complement it.
More information about the operation of the sewer system (video)
Why is it needed: purpose and functions
Now let's look at why such a scheme is needed:
Removing gases that accumulate in the sewer system (they are removed upward through the pipe and released into the atmosphere).
Maintaining pressure in the sewer system (equalization when draining a large amount of water).
“Protection” of water seals (preventing them from being sucked in).
In general, the fan pipe provides normal work sewer system.
Where is a vent pipe needed, and where can you do without it?
According to SNiP, in low-rise construction (in one-story and two-story private houses), the sewerage system does not necessarily have to have a drain pipe. The reason is that in such houses the volume of simultaneously drained wastewater is small, and in rare cases it can completely block the diameter of the sewer riser.
In a private house, there is a need for such a ventilation duct if:
the house has two or more residential floors, and both (or more) floors have a bath and toilet;
the house will have 2 or more bathrooms that can be used simultaneously;
the house has a swimming pool (or any other source of a large amount of waste, for example a jacuzzi);
the diameter of the sewer riser is small (less than 100-110 mm);
There is a septic tank (cesspool) located near the house.
If you are building a house of 1-2 floors, in which there will be 1 toilet and a bathtub (sink, shower), you can do without a ventilated riser, or limit yourself to installing a sewer valve. This is true for dachas and small cottages.
Is a drain pipe needed in an apartment in a multi-storey building? Yes, it is needed, and it is always available. The reason is that in apartment buildings the volume of wastewater is always large (especially during the hours when people are in the apartment: in the evening, early in the morning, on weekends).
How to choose the right fan pipe?
Before installing a riser or replacing it with a new one, you must select the right pipe. An incorrect choice may result in system malfunction.
The main parameters when choosing are:
Length (you need to know what the full line height should be).
Material.
What should the diameter of the drain pipe be?
The diameter of the drain riser is the main characteristic that must be taken into account when choosing and designing a system (especially in Khrushchev, since in apartment buildings there is a large number of drains).
The basic rule for choosing a size: minimum diametermust be no less than the cross-section of the sewer riser(if the riser has a diameter of 250 mm, then the drain pipe should have the same size).
Common sizes during construction are single- and two-story cottages are pipes with a cross section of 50-90-100 mm. This is enough if the house has:
sewer riser with a diameter of 100 mm;
sink (kitchen sink) with drain pipe in 50 mm;
shower drain;
washing machine.
Selection by material
To lay a sewer riser, pipes made from the following materials are usually used:
PVC. Plastic products easier and faster to install, cheaper in cost. Plastic is gradually replacing cast iron - new systems are usually made from this material.
Metal (cast iron). Cast iron pipe is an outdated solution for sewer systems. Cast iron is strong and durable, but it is much more difficult to work with: cast iron products weigh a lot, they are more difficult to cut and connect, and during operation they become dirty faster.
If necessary (if repairs and replacement of the system or its individual sections are carried out)you can connect plastic and cast iron pipe. Insertion into each other is carried out using special adapters (cuff).
How to check if there is a drain pipe in the house?
If you are not building a house, but buying finished building- it is advisable to find out if it has a fan riser.
To do this, you need to flush the toilet and listen to sounds from the sink or bathroom. If you hear a squelching suction sound, the pipe is either missing altogether or is clogged and requires cleaning.
Installation rules
To properly install a fan riser, you must comply with the following requirements:
The outlet of the riser should not go into the attic, but into the street. If sewer gases escape into the attic, it will smell bad and the humidity will increase (which will lead to mold).
The diameter of the drain riser must be no less than the diameter of the sewer riser. More is acceptable, but not required.
The pipe outlet should not be located close to a wall or near other structures (windows, balconies). Otherwise, stains from gas emissions may appear on the wall, and an unpleasant odor will be felt in the rooms near the outlet.
The outlet should not go under the roof overhang, otherwise in winter the pipe may be damaged (due to ice or melted snow).
For private houses, it is enough to use 1 vent riser. Lines from all plumbing points must be cut into it using tees, crosses and adapters.
There must be a temperature difference between the lower and upper points of the pipelines (it’s warm at the bottom, cold at the top).
The fan riser can be laid in the ventilation shaft, in one box. However, it should not be connected to ventilation ducts, going to living quarters, and chimneys (according to SNiP).
It is permissible to connect several sewer pipes to one drain riser.
Installation rules (video)
In the ides of the scheme
According to the “direction” of the output, there are 2 options for laying:
Horizontal - whenthe pipe does not exit through the roof, but through the wall. The method is relatively rare and can only be used in private construction, in cases where for some reason the output cannot be made through the roof. In this case, a grille is installed on the hole, not a deflector.
IN vertically - the most common option: the riser is led up through the roof.
Vertical passage, in turn, is divided into 3 more subtypes:
An outlet with a slope of 90 degrees: a branch is made from the riser at a right angle, from which there is then another branch, and from this there is a straight section extending above the roof.
An exit with a slope of 45 degrees: a branch is made from the riser at an angle of 45 degrees, another branch is made from it, and from this there is a straight section extending above the roof.
Vertical outlet: The riser simply continues until it exits above the roof.
The exhaust pipe exits through the roof: how is it done and what height should it be?
U The fan riser section, located outside, above the roof, must meet certain requirements:
Height above roofing material The roof in use must be at least 3 meters high.
The height above a flat roof that is not in use must be at least 30 cm.
Height above pitched roof must be at least 50 cm.
Horizontal distance between terminalpipes and the nearest window (balcony) must be at least 4 meters.
The outlet should be covered by a deflector on top. It is needed to prevent debris, insects, birds, and precipitation from getting inside.
If it is possible to draw a line through the pediment, it is better to implement this option rather than passing through the roof. In this way, you can save yourself from troublesome work with roofing material and further sealing.
How is the output through the roof made? (video)
Installation errors
The installation of a ventilation riser for a sewer system may be carried out with errors. Of the most common:
Dismantling the riser (intentionally or unknowingly) in apartments (multi-storey buildings).
Output under the roof overhang.
The use of pipes of different diameters when creating a sewer system.
Output of the riser to the attic.
Mounting the riser external wall the buildings.
Do you need soundproofing for a drain pipe?
Soundproofing needed if the pipe passes through living rooms. In this case, the noise of water and air will be heard in the premises. The pipeline itself will also make noise due to vibration and resonance.
Sound insulation of areas passing through non-residential premises- not required.If the riser is laid inwall, and the thickness of the partition is small - then at the construction (repair) stage it is recommended to perform at least “light” sound insulation.
IN Ideally, the issue of sound insulation should be resolved at the design and construction stage of the building. The riser needs to be “hidden” in a separate box (shaft), or planned so that it does not pass through the living quarters.It is also recommended to use special “silent” pipes(thick-walled polypropylene products).
The soundproofing process itselfcarried out using “shells” or roll insulators that are wound onto the pipeline. The thicker the layer, the more effective the insulation will be.
In order for the drainage system to work properly, without causing inconvenience in the form of unpleasant odors, plumbing fixtures are equipped with siphons, and the sewerage system itself is equipped with a waste pipe. IN small houses You can do without this design, but sometimes it is still necessary. It is not difficult to equip a fan pipe, but you need to take into account all the requirements for it and the subtleties of installation.
This is a fairly simple device - a separate, usually straight, branch of the sewer pipeline, led vertically upward to the street and connecting the sewage system to the atmosphere.
In cottages with bathrooms on several floors, the drain pipe is a continuation of the riser, leading above the roof. In houses where the drainage system is located on one floor and does not have a riser, the drainage pipe is removed from one of the sides of the transition unit connecting intra-house network from the outside, or from the point of connection to the main line with the largest number of branches.
Note! The ideal shape of a vent pipe is a vertical straight line, but when installed inside a house, this vertical line will have to intersect the floors and roof, which is not always feasible. To simplify installation work you have to change the shape of the structure: make a 90-degree turn using 2-3 elbow fittings when passing through the wall and direct the pipe upward again.
Purpose of the drain pipe
The sewer pipe serves to ventilate the sewer network, that is, to remove gases formed in the pipeline and supply fresh air if necessary.
When moving and mixing sewage discharged into a sewage system, various volatile substances are released that have an unpleasant odor and are also hazardous to health.
Installing sewer ventilation solves the problem of gas removal, preventing gases from accumulating in the pipeline.
Note! There is another, more important purpose of the drainage pipe - maintaining the pressure balance in the drainage system.
When flushing water from a bathtub, swimming pool, or using several sinks and toilets at the same time, residents pass a large volume of liquid through the pipeline at once. In this case, the volume of air in the system turns out to be critically small and a vacuum occurs - a decrease in pressure in the network.
