What is needed for the air valve to work properly. Which is better, a vent valve or a vent pipe for sewerage? A vent valve for sewerage 50 mm

Hello dear reader! Nowadays, few people are satisfied with a house without amenities, where there is no bathroom or toilet. However, if the plumbing is installed incorrectly, normal air exchange in the room may be disrupted and sewer gases, consisting of substances harmful to human health, may penetrate into it. To solve this problem on the riser and near plumbing fixtures.

Water valves in the siphons of plumbing fixtures are barriers to odor from the sewer system. But with a sudden drain large quantities As water in the pipes decreases, the pressure decreases and water is sucked out of the siphons. At this moment there are no longer any obstacles to the penetration of the smell and it can freely penetrate into the room. The causes of the odor may also be small size siphons or prolonged downtime of plumbing, leading to evaporation of water in the siphons.

Sewage ventilation in the form of a drain pipe or air valve helps protect the room from unpleasant odors. The air entering through them equalizes the internal pressure in the pipeline with atmospheric pressure. Under such conditions, gases are not forced out through siphons, but move further through pipes into a collector system or septic tank.

Why do you need a valve for a sewer riser?

Fan valve in the drainage system performs the following functions:

minimizes the threat of movement Wastewater in the opposite direction;
reduces the noise level in the sewer;
protects the room from flooding during breaks in the system;
does not allow foul odor to enter the room in case of prolonged downtime of the sewer system;
minimizes the threat of rodents entering the building through sewer lines.

Design and principle of operation of the fan valve

The air valve device includes:

plastic case with a side hole;
a cover that can be removed to clean the device or carry out repair work;
rubber membrane or rod;
a sealing gasket designed to seal the structure and limit the stroke of the rod.

The operating principle of the device is as follows:

if the pressure in the riser is equal to atmospheric or slightly exceeds it, the valve is closed and does not allow gases to pass from the sewer into the room;
when draining water from plumbing fixtures, a vacuum occurs inside the pipeline, resulting in the displacement of the rod (membrane) and the opening of the fixture;
air enters through the valve, which equalizes the pressure. The rod begins to move in the opposite direction and closes the valve.

Based on their operating principle, air valves are divided into three types:

automatic - used mainly for installation in small private houses, as they are not able to withstand strong water pressure and a significant volume of air. Works only to relieve accumulated air;
kinetic (anti-vacuum) - designed for the release or intake of air in systems with low pressure levels;
combined - combine all the best technological capabilities of the two previous devices.

Since the sewer main has vertical and horizontal sections, for each of them it is selected ventilation valve With different designs working mechanism:

ball aerator. The valve part has the shape of a ball, which is pressed against the bleed hole using a spring. Used for installation on horizontally located sections of small-diameter pipes at the connection point of plumbing fixtures;
receiving model. The design of the device includes a filter designed to capture solid particles from wastewater and prevent them from passing further into the sewer system. Available with a diameter of 20 cm and used for installation in front of the pump of a horizontal pipeline line;
Wafer aerator. This is a compact and lightweight device that can be placed both on a vertical riser and on a horizontal pipeline line. Depending on the design of the body, it can be through (the flow of water passes through it without changing its direction) and angular (when passing through the valve, the flow of the transported medium changes direction by 90º). Modifications with a plate-shaped locking organ have a diameter from 1.5 to 20 cm. The diameter of bivalve models ranges from 5 to 70 cm;
check valve, equipped with a rotary or petal mechanism. It has a shut-off element in the form of a spool, which, when the pressure in the system drops, is pressed tightly against the seat. Large diameter aerators can quickly break due to strong impacts of the spool on the surface of the seat. Continued operation of such a damaged device may result in water hammer in the system. To reduce the impact of impact, valves of large diameters are equipped with a damper.

The valves differ in the method of fastening:

for welding. Used in systems that transport particularly aggressive environments industrial enterprises;
coupling - threaded couplings are used for fastening;
flanged - the vacuum valve is clamped between flanges installed at the ends of the pipes;
flanged with sealing gaskets.

Advantages and disadvantages

Installing an air valve in your drainage system provides many benefits, including:

saving money that will be required for work on removing the drain pipe through the roof;
the ability to prevent the penetration of sewer gases into rooms in the presence of an unventilated riser.

The disadvantages of the fan valve include:

the possibility of the water seal drying out, as a result of which unpleasant odors may enter the house;
rapid wear rubber seals, the consequence of which may be loss of tightness;
the difficulty of choosing a place to install the product, since achieving a more complete fit is only possible with sockets;
the need for regular maintenance of the device and replacement of worn parts.

Technical characteristics, diameters and manufacturers

The sewer aerator model is selected according to its main technical characteristics:

diameter - 50, 75, 110 mm;
throughput - from 7 to 37 l/s (at the rate of 25 l/s per 1 liter of water).

The Russian market for sewerage systems offers products from manufacturers from different countries:

Austria - the most expensive devices from HL;
Great Britain - products from medium price segment from McAlpine;
Russia - inexpensive devices from Politek and Sinicon;
Ukraine - products from the cheap segment of the Europlast enterprise.

Prices and where to buy

The table below contains current offers for today.

How to choose the right valve?

When choosing an air valve for sewerage, they are guided by the location of the pipe (vertical or horizontal) in the place where it is planned to be installed. The device must correspond to the nominal pressure in the network and have appropriate installation dimensions.

You also need to consider:

how the aerator will be attached;
strength of the material, its anti-corrosion properties;
possibility of manual adjustment in case of mechanism failure;
availability of protection for rodents.

Where and how to install the valve correctly?

When installing the valve, it is necessary to follow a number of rules that will allow it to fulfill its purpose as efficiently as possible, namely:

Aerators may only be installed in rooms with constant heating.
The device must be placed in a location to which there is Free access so that there are no problems with maintenance in the future.
If there is a grate in the floor of the room, then the distance from the floor level to the device must be at least 35 cm.
Installation of the automatic valve should be carried out at a point in the system that is 10 cm above the maximum level of flow into the main riser, in order to prevent clogging of the aerator with waste and feces passing through the system.
The device must be mounted in a vertical position directly in the socket of a straight line of a sewerage pipeline at a distance of at least 0.2 m to the nearest siphon.

Possible locations for installing the device

Aerators of modern design can be installed:

V vertical riser having an exit through the roof;
aerator models cylindrical with a lid they are placed on the drain pipe; simple valves are suitable for individual plumbing fixtures: toilet, sink, bathtub or washbasin;
devices with a diameter of 50 mm are mounted on horizontal pipes long distance or on lines with a transition of sections of one diameter to another. Maintaining a slope when installing pipelines will help natural course drains and will prevent the occurrence of stagnation and foul odor;
devices with a diameter of 110 mm are mainly installed on a drain pipe; installation on an auxiliary riser is possible.

Installation stages step by step

Installing the device is quite simple, it can be done independently according to the following scheme:

determine the installation location;
disconnect the pipeline section from the operating system;
cut a piece of pipe in the riser to the size of the device;
clean the edges from nicks;
install in socket sealing ring. If a threaded type of connection is used, then a gasket is not needed;
secure the valve to the pipe;
perform a test run of water to check the operation of the mechanism.

Sewage gases not only smell bad, but can also cause significant harm to health. Aerators will help block the penetration of these harmful substances into the apartment and prevent poisoning of residents. Subscribe to our channel and share useful ideas in social networks.

The sewer aerator 110 relieves residents from unpleasant odor and sounds when flushing the toilet. Install the device on horizontal sections of the sewer system and auxiliary risers. Here is information about the devices and how to properly install the air valve.

An internal sewer aerator primarily works as a check valve, preventing liquids and gases from reaching the drain point. When using the toilet, a sudden flush of water lowers the pressure in the system, and without the valve, the liquid may return at a higher speed than it was drained. When the pressure drops in the sewer pipe, sewer valve 110 opens and equalizes the indicator.

The principle diagram of the operation of air valves is shown in the figure. All devices include:

frame;
air intake;
pressure regulation mechanism.

The housing is sealed, with a removable lid. The connection must be threaded. There is a rubber seal between the parts.

The inlet should allow air to pass through, but not insects and rodents. The damper opening mechanism is rod or membrane. The membrane clogs less often.

An aerator for a septic tank is used to supply air to bacteria that decompose sewage. You can make it yourself, remove the pipe from the septic tank like a riser, and plug it at the top. Weld an inlet on the side for forced air injection.

Types of air valves

The sewerage layout is multi-level and has vertical and horizontal sections. The diameter of the pipes, maintained slopes and flow rate determine which aerators for sewerage are most effective. There is a system of aerators, each of which has a specification:

the receiving aerator is mounted in front of the pumping pump on a horizontal section of the pipeline;
ball model of an aerator for plumbing fixtures with small pipe diameters;
ball valve with pressure spring;
The wafer model is installed on pipes with a diameter of up to 20 cm, can pass flow or rotate by 90 0.

Wafer models can be disk spring or double-leaf. The actuator is a plate with a spring.

Check air valve with reed or reed actuator rotary type. This type of aerator is installed on pipes with a diameter of less than 400 mm. For long sections where there is a risk of water hammer when the spool ruptures, damper valves are installed.

The valves are fastened by welding, clamped between two flanges with gaskets, or a threaded coupling is used.

Reasons for installing air valves

The sewer system is dynamic. Costs are constantly changing, gases appear from the decomposition of sewage. Draining through sanitary fixtures changes the hydraulic regime in the pipes. Without regulatory tools, life with poorly functioning sewage systems becomes uncomfortable. Sewer aerator 110:

automatically regulates pressure;
non-volatile;
protects the fan pipe from freezing in winter;
simple installation;
low cost.

The device equalizes the pressure between the main line and the atmosphere on the roof where it is installed. However, such a device can work effectively at a height not higher than the second floor. If the drain large flow occurs simultaneously from two points on one riser, the valve may not cope.

Sewer aerator 50 is installed on internal sewerage from drainage devices. Typically, such a device is equipped at the transition points from the 32 cm line connecting to the 50 cm manifold. An air valve is installed on the horizontal section, cutting off the bad smell from the common pipe, equalizing the pressure in the system.

Correct installation of aerators

Air valve on the riser is installed in attic, since it is frozen, it will not work. But the smell should not be felt in the room. If the house has several auxiliary risers and the main one is on the roof, then a sewer aerator 110 can be installed on the others. This will significantly reduce costs. The device can also be used when a riser is not provided or it cannot be brought to the roof, ensuring the requirements of SNiP for the distance to structural elements. When choosing a device, it is necessary to take into account that sometimes manual adjustment may be required. The aerator is installed above the top drain point in the system, and it must be accessible for inspection and repair.

The aerator only works when correct assembly! The pipe and socket cannot be swapped,

Sewer aerator 50 can serve no more than two plumbing fixtures. Install the device no closer than a meter from the drain point. The aerator in the internal sewer must be at the end of the network distribution, after the outermost device. The minimum distance from the floor during installation should be 35 cm. The device is mounted vertically.

Right installed aerator will last a long time, but periodic inspection valve condition is required.

Why do you need a sewer vacuum valve - video

A house that is not equipped with amenities will suit few people today. Each residential premises must be equipped with both water and sanitary facilities, which certainly leads to the direct provision of a full-fledged sewerage system. At the stage of deciding, designing and purchasing ventilation components, it is necessary to carefully consider systems for ensuring decent ventilation, which can only be provided by a modern air valve for sewerage.

Why is an aerator needed?

Aerator is the correct name for those devices that are purchased as vacuum valves or sewer air valves. The main task When installing such devices in a central or apartment, it is possible to eliminate the resulting gases, unpleasant odors, and the ability to compensate for pressure in the general system.

During the construction of buildings, one of the standard solutions to ventilation problems, for many years now, is to bring the riser to the roof. If suddenly, after some time, such an exhaust hood becomes insufficient, then unwanted metamorphoses begin to appear in the room: unpleasant sewer odors, fountains flowing from siphons.

The main purpose of the aerator for internal sewage is to prevent various types of gases from entering the room through the use of a barrier.

At a time when the pressure in the riser is discharged, the aerator removes the barrier. It follows that installing an aerator is necessary to maintain pressure in sewer pipes Oh.

The operation of such an installation occurs only at a time when ventilation system A violent gas reaction occurs and ends when the processes normalize. This way it prevents the appearance of unpleasant odors from common system and splashes of dirty sewage water.

Types of valves

Today, among the variety of external design and color palette air valves are divided into 3 types:

Kinetic valve. Kinetic, otherwise called anti-vacuum. This device operates only at low pressure. The main purpose of the valve is to exclude large volumes of air while the system is filled with liquid or air during emptying of the pipeline.

Automatic valve. The main task automatic device is the removal of accumulated air from the pipeline system, which is under pressure. The power of the automatic valve is not designed to withstand higher pressures and volumes of air. It may be enough to provide only one private home.

Combination valve. The operation of such devices is based on combining the functions of kinetic and automatic valves.

Principle of operation

To fully understand the processes occurring inside the device, it is necessary to understand in detail the principle of its operation. So, let's look at the operating sequence of the automatic device.

When water is drained into the general sewer system, a vacuum is created inside it. That is, the pressure in the system becomes less than atmospheric.
As a result of the resulting pressure difference, the air valve rod rises, that is, the membrane opens slightly.
At this time, the system penetrates through the side hole. required amount air.
When the pressure normalizes (comparison with atmospheric pressure), then the rod lowers onto the seat.

Installation

For correct installation device, you can use the services of a specialist or carry out this simple procedure yourself. For high-quality installation For such a device, you must adhere to some rules:

An air valve for sewage can only be installed in rooms where the temperature does not drop below zero.
The selected location for mounting the device must be open to allow subsequent inspection.
The valve of the device must be inserted directly into the pipe socket in a straight line vertical section using a vertical rubber O-ring.
The automatic air valve must be installed at a distance of more than 10 cm from the point of highest flow in the common sewer riser.
In rooms where there is a built-in floor grating, the air valve is installed at a height of more than 35 cm from the floor.

Maintaining such minimum distances will help prevent possible contamination of the device itself from household waste and fecal matter.

Where can I install the aerator?

A modern air valve can be installed in the bathroom, toilet or vertical riser of the sewer system, the outlet of which is often located in the attic.

Modern aerators differ in design, and accordingly possible place installations.

Conventional vacuum devices are often mounted on a bathtub, sink or washbasin. In such aerators, to prevent the reverse movement of water in the shower or sink, a balloon, creating pressure on the ceiling membrane. Thus, the access of water on the way back to the sink is blocked.

For the fan pipe, it is advisable to install a cylindrical shut-off structure with a lid. The operation of such an installation is carried out only under the pressure of water pressure.

How to install the device correctly?

To install the valve correctly, first of all, it is necessary to make a rational selection of a device that meets the requirements of the system:

The valve structure must be made of durable materials, but which cannot be exposed to chemical or other aggressive environments.
The design includes a high-quality valve to prevent backflows and foreign odors.
It is possible to adjust the operation of the mechanism manually in case of emergency situations.
A modern system can serve as an obstacle to rodents entering the premises.

Mount modern design does not represent a valve special effort. However, before starting work, it is necessary to turn off the water supply throughout the riser. Next, dismantle part of the pipe and install the mechanism according to the instructions supplied with the device.

Important! The valve of the device will not work if the inlet pipe and the socket are swapped.

Installed valve on horizontal pipe it is necessary to install it so that the arrow-shaped indicator completely coincides with the direction of the sewer flow.

Where do valves need to be installed?

For high-rise buildings connected to wastewater treatment plants.
For the area where sewage is discharged.
If the sewer system is connected to sanitary installations.
For systems in which connection is only possible in a horizontal position.

By installing a sewer air valve in a house or apartment, the owner will forever forget about unpleasant odors from sewer pipes. Installing such equipment allows not only to solve the problem of foreign odors, but also to significantly save money on installing an external general ventilation riser.

An unpleasant odor emanating from the sewer is a fairly common occurrence in our houses and apartments. Therefore, it is important to know that there is easy way improve its performance without resorting to major renovation.

A vacuum valve for sewerage (or as it is also called an air valve, aerator, ventilation duct, vent valve) allows you to improve the system, and in some cases even abandon the construction of a vent ventilation riser.

In our material we will talk about the design and purpose of the aerator, as well as how to independently install it in the sewer system.

Irregularities in the sewer system can be identified by characteristic signs.

These are:

presence of extraneous sounds;
spread of unpleasant odors.

In houses with a long-established sewer network, it is necessary to first check all elements of the network for damage. Deviations in work new system may indicate incorrect installation.

If during the examination it was possible to exclude such causes possible damage like cracks in pipelines, or ventilation ducts, incorrect pipe slope, then the cause of the problems is most likely insufficient air flow. In this case, installing a vacuum valve will help troubleshoot the system.

Reasons malfunction There may be several sewer systems: blockages in pipes, violations of installation rules, blockage by residents upper floors ventilation ( fan boner). Sometimes the source of trouble can only be identified by a specialist

Operating principle and purpose of a vacuum valve

During hours of maximum drainage and when large amounts of water are drained into sewer system An air vacuum can be created and water is sucked out, and odors, harmful gases and vapors enter the room.

A vacuum valve is installed to compensate for pressure in the sewerage system. It prevents water from being sucked out and odor from entering from siphons.

This happens as follows. The vacuum valve starts to operate when the pressure drops in sewer network. When a large volume of waste liquid is drained (for example, when using a toilet or several plumbing fixtures), the pressure in the system dilutes and the valve membrane automatically opens, allowing air inside the pipeline until the pressure equalizes.

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At the beginning of the work, the installation location of the valve is determined, taking into account the installation rules and its accessibility for further maintenance.

The water supply in the house is turned off.
If the installation is carried out on a previously installed pipeline, then a tie-in is made and a special adapter is installed.

Most aerator models have a bell-type connection.

The assembly of such connections is carried out in the following sequence:

The outer surface of the smooth part and the surface inside the socket are cleaned of dust.
Wipe the sealing ring from possible contamination and place it in the bell groove.
The surfaces that come into contact during connection are lubricated to reduce friction. To do this, use a silicone-based sealant or soap solution, glycerin.
Place the smooth end of the valve into the socket up to the mark. The quality of the connection is checked by rotating the parts relative to each other, followed by returning to their original position.

If necessary, an area with a connected vacuum valve secured with a clamp. Upon completion of work, it is necessary to check the joints for leaks.

In order for the sewage system in the house to work efficiently and not create unnecessary problems, it is necessary to take into account many nuances. One of these moments is blocking the entry of unpleasant odors from pipes into the room.

For this purpose, all plumbing fixtures are equipped, and the central riser is equipped with a fan (ventilation) pipe. If fan pipe does not cope with its duties or is absent altogether, you can install a sewer aerator.

Installation of this device is not mandatory, and is done as already working system, and for a new one.

What is a sewer aerator and why is it needed?

Air valve for sewer - small plastic device with a hole in the housing for air supply. Inside it there is a channel for the passage of air and a damper, which is activated by the action of a membrane or rod.

The responsibilities of a sewer aerator include:

trapping unpleasant odors in pipes;
stabilization of internal and external pressure in the pipeline.

Principle of operation

As mentioned above, the operation of this device is to block sewer gases and compensate for pressure in the pipes. A siphon usually serves as a lock for an unpleasant odor, but not always successfully.

Video: Why do you need a sewer vacuum valve?

The whole point is that when a large amount of drained liquid enters, the so-called salvo discharge, a high pressure. When the water reaches the central riser and rushes into the pipe, a vacuum is formed in the pipes, which leads to the failure of the water seals. After which the smell freely penetrates into the room. To prevent this from happening, the riser is equipped with a ventilation pipe and is led to the roof.

However, this method has several disadvantages. Firstly, it may simply become clogged, and secondly, during its installation the integrity of the roof may be compromised. Or, as often happens, especially in old houses with an existing sewer system, it is completely absent.

As soon as a vacuum is created in the pipe, the membrane in the aerator is triggered and a hole opens. Through this hole, the missing air enters the system and the pressure stabilizes. After the water has drained and the sewer has filled with air and the pressure has equalized, the valve closes and odors are not able to enter the room.

Installation of a sewer aerator

To properly install a sewer air valve, several rules must be followed.

The aerator must be located in a warm room, the temperature in which is not below zero;
The location must be accessible for valve maintenance and replacement;
The aerator is mounted in the pipe socket and positioned strictly vertically.

On a note! The air valve is installed at least 10 cm above the maximum release point. If the system is equipped with a floor drainage grid, the minimum installation height is 35 cm above floor level.

The design of modern sewer valves allows you to install them in almost any room: bathroom, toilet, kitchen, attic, etc. To install the aerator, calling a specialist is not necessary; you can do everything yourself.

Stages of work:

Turning off the water to avoid unauthorized discharge and flooding.
If the installation is carried out on a horizontal pipe, part of the pipe is dismantled. If the aerator is installed on a riser, nothing needs to be removed.
After this, the valve is assembled and installed according to the instructions included in the kit.

On a note! If the aerator is installed in horizontal plane, then the arrow-shaped indicator printed on the body coincided with the direction of sewer flow.

Choosing an aerator

When choosing this equipment, you should pay attention to such aspects as:

device type;
diameter;
the company is a manufacturer.

Types of aerators

Today, manufacturers offer three types to choose from:

kinetic - the task of this device is to prevent the accumulation of excess air in the pipeline;
automatic – serves to remove air under high pressure;
combined - combines the functions of the two previous valves.

For efficient and uninterrupted operation, it is better to buy the latter option.

Valve diameter

The correct choice of the diameter of the vacuum sewer valve is the second most important factor that should be taken into account when choosing a device. Let's look at this in more detail.

Sewer aerator 50

Such a valve can handle only a small amount of water and is installed on drain pipe from the bathtub, sink, etc. There are several rules for its installation:

it can only be connected to a pipe with the smallest diameter;
installed after the last plumbing fixture;
installed in the high point pipeline.

Sewer aerator 110

These valves can handle large amounts of liquid and are connected to the riser or the end of a drain pipe. Produced with both internal and external mounting elements. Advantages:

there is no need to route the pipe through the floors and roof;
automatic pressure regulation;
affordable price and easy installation.

Manufacturer choice and price

To ensure that the sewage system works uninterruptedly and does not deliver unnecessary hassle, it is better to choose an air valve from proven and famous manufacturers. The most popular and best-selling aerators are produced by the following companies:

Ostendorf – Germany;
McAlpine - Scotland;
Politek – Russia.

The table below shows the average prices for vacuum sewer valves these manufacturers:

The prices indicated in the table are average for Moscow and the Moscow region. The exact cost can be found on the manufacturer's website.

When choosing a sewer aerator, carefully select the location for its installation and decide in advance necessary type and device diameter. If you install it yourself, follow the instructions and installation rules recommended by the valve manufacturer.

Video: Causes of sewer smell in the bathroom and kitchen + how to make a vacuum valve