Why do you need a sewer air valve: installation features, types, and manufacturers

An air valve is a device that removes air from a system, neutralizes pressure surges, and prevents air locks. There are three types: lever, diaphragm, and cylinder valves. They are used in sewer, heating, and water supply systems.

Sewage systems are a multifunctional and important utility. However, like other benefits of civilization, such systems have their drawbacks, particularly unpleasant odors and noise. To minimize such problems, the sewer air valve was invented.

This device was specifically designed to effectively combat stubborn odors. Also known as an aerator, it eliminates the noise produced by pipes. Its purpose is to create a barrier and protect the apartment from odor re-entry.

From our review you will find out, How an air valve works, the intricacies of its installation, and what types of devices are available.

What is this device used for?

Signs that a valve is needed include the development of unpleasant odors and/or unusual sounds. Any deviation from the norm is a clue to improper sewer system design. The valve is needed to compensate for the pressure in the system.

It not only replaces the ventilation riser, but also solves the following problems:

1. It will help when it is impossible to install a waste riser.
2. Reduces heat loss through ventilation.
3. Improves the functionality of the entire sewer system.
4. One of its tasks is to protect against the failure of the fan element.

Operating principle

So, let's look at the operating principle of a sewer air valve:

1. When water is drained, the liquid passes into the sewer line. This process is accompanied by a decrease in pressure.
2. Due to the difference in atmospheric pressure, the air valve opens, allowing air to enter through the holes on the side.
3. The pressure normalizes once the required volume of air enters the pipeline. As a result, the device returns to its original position, which in turn creates a tight seal.

The entire process happens very quickly, and as a result of the water seal being activated, unpleasant odors from the sewer do not enter the room.

The sewer air valve consists of a housing made of high-rigidity polymers. The top section is removable, allowing for inspection and cleaning.

A rubberized gasket ensures a tight seal. An air hole is provided, which activates the opening and closing mechanism. This device helps equalize negative pressure within the structure. Under normal conditions, air flows through the exhaust pipe.

Please note! This device protects the room not only from methane, but also from harmful microorganisms and fungal spores.

We determine the installation location

Important to know! The air valve for sewer systems is typically mounted 20-30 cm above the main pipe. During installation, prevent dust, dirt, or liquid from penetrating the membrane. For optimal operation, a regular oxygen supply is required.

For installation in an apartment, the device is attached to a vertical pipe. This method won't provide ventilation for the riser, but it will eliminate odors in a specific area.

It is recommended to install a sewer air valve and in a private houseIn this case, it is not necessary to carry out fan structure through the roofHowever, some experts argue that it should only be installed as an auxiliary part to the riser.

In private homes and apartments, plastic drainage systems are installed. Air vents are also made of polypropylene or PVC.

The valve must be installed:

1. In high-rise buildings that are connected to wastewater treatment plants.
2. In waste disposal areas.
3. When connecting sewerage to sanitary facilities.
4. In systems that can be connected horizontally.

Do-it-yourself valve installation - in apartments; in a private house

You can install this element yourself or call a professional. There are no differences between installation in a private home or apartment; the same installation principles apply everywhere. However, when installing, please observe the following rules:

1. The device must not be installed in rooms where heating is not provided.
2. When using the device, it is important to ensure free access to it for inspection or preventive examinations.
3. When installing an automatic version, it is important to determine the highest point of drainage into the riser.
4. Fixation is performed above 10 cm from this point. This is relevant if a drain trap has not been installed.
5. If the ladder is equipped, the part is attached 35 cm above the floor level.
6. The valve should be positioned in the socket in the area with the sealing ring. A vertical orientation will ensure proper drainage system functionality.

Modern devices can be used in the bathroom or toilet. They are easily installed on a riser pipe. Simple devices are installed on a vanity, bathtub, or sink. For the waste pipe, a cylindrical design is recommended.

A 50mm diameter sewer air valve dilutes the system's air in horizontal areas. It should be installed on long sections of the pipeline. Creating a slope will allow the wastewater system to naturally escape.

A 110 mm diameter sewer air valve is primarily used on waste pipes. Under certain conditions, mounting to a secondary riser is acceptable. Mounting the valve at an angle is not permitted.

The valve must be installed in strict accordance with the instructions. It can be mounted on a flange, threaded, or using a coupling. Sealed connections and joints must be created and then tested after completion.

At the beginning of installation, be sure to check that the water supply valves are closed. Then, the required pipe element is removed and a valve is installed in that section. If the pipeline is installed horizontally, check the water flow direction against the device parameters. It is not recommended to relocate the socket and inlet pipe, as this will prevent the valve from operating.

The mechanism installs into the socket of a plastic pipe without any additional parts, and a special seal made of the socket ensures a tight seal. When installing into a cast iron pipe, an adapter will be required. This option is more complex to install.

During installation work, it is necessary to ensure a tight connection between the main device and the comb and socket elements.

If the structure has a socket-type connection, installation work is carried out as follows:

1. The surfaces are cleaned of dust.
2. The sealing rings are cleaned and degreased, then the groove is laid.
3. Contacting parts are lubricated with sealant or glycerin, which reduces friction.
4. The end of the valve is inserted into the socket up to a special mark.
5. At this stage, it is important to check the quality of the fastening by turning it.
6. Additionally, the area with the fixed valve is secured with a clamp.

After completion of the work, the joints should be inspected for leaks.

McAlpine Sewer Air Vent Valves

Prices and manufacturers

Models are selected based on specific criteria. These include diameter, which can be 50, 75, or 110, and flow rate, which ranges from 7 to 37 liters per second.

Products from the following countries are presented on the Russian market:

1. The Austrian company HL offers the most expensive designs. Prices range from 2500 to 3600 rubles depending on the model.

2. McAlpine from the UK offers products in the mid-price range of 1200-1300 rubles.

3. You can also purchase inexpensive air valves from domestic manufacturers Sinicon and Politek. Prices range from 150 to 380 rubles.

Types of valves

There are different types of these devices, each with different operating characteristics. Let's take a look at them.

1. Automatic – popular for use in small private homes. This device cannot handle heavy loads.
2. The kinetic valve functions properly at low pressure. This device prevents air accumulation during flushing.
3. The combination version is a device that combines two types.

The pipeline can be installed in any direction. A specific option is available for each case. When installing a drain valve, the pipe diameter must be selected correctly.

This factor influences the division:

1. The intake aerator has a diameter of 20 cm and is equipped with a filter that traps suspended solids. This version is mounted on a horizontal line.
2. Ball valves are mounted on small-diameter pipes. The valve uses a ball as a seal.
3. Inter-flange valves are compact and lightweight. They come in either straight-through or angled configurations. The valve is a special plate.

It's also worth classifying products by their mounting method. Devices can be installed using welding, but this option is not suitable for residential applications. For small-diameter pipes, coupling-based fasteners are suitable.

If the valve does not have a fastening element, it is clamped between flanges. Fixation through flanges using a gasket is also often used.

Features of operation

The installation of a sewer system is governed by specific SNiP (Building Code) standards. To ensure the system provides long-lasting service, it is essential to maintain its proper functioning and regularly check its performance.

1. Problems can be caused by the rod or membrane sticking in one place.
2. If the device gets stuck open, sewer odors may enter the room.
3. When stopped in a closed position, the water seals may fly off.

The exceptionally robust design and systematic testing of the device will help avoid emergency situations.

Installing the device in combination with waste or ventilation outlets helps to avoid the breakdown of water seals.

If the appliance has stopped working, the cause may be a problem with the overall sewer system. In this case, consider whether a new appliance, such as a washing machine or dishwasher, was recently installed.

Eliminate sewer odor

When water is flushed into the sewer system under pressure, it can interfere with the system's operation. In this situation, it is recommended to install an additional device to ensure the operation of household appliances.

What to look for when choosing an air valve

When selecting the appropriate fixture, it's important to consider the fastener specifications, system pressure parameters, and the orientation of the structure. The following features are also considered:

1. Parts must be made of high quality materials that are resistant to aggressive components.
2. Possibility of manual adjustment of the structure.
3. Modern models include protective mechanisms against rodents that may come from the sewer.

Installing a drain air vent will permanently rid homeowners of the foul odor coming from their pipes. Installing this useful device will not only eliminate the odor problem but also help save money on pipe repairs.

Sewer vacuum valve