To ensure the flow of air inside residential and non-residential premises, a supply valve is often used today. In the wall you can install it yourself, for this you do not even need to purchase additional tools. This need is due to the fact that sealed aluminum, wood and PVC window systems have been very popular in recent years. They are the reason that it is difficult to create an ideal microclimate for a person inside the premises. The windows have seals, which eliminates the influx of fresh air that was previously present due to the slits.
Description of walled inlet valves
The inlet valve in the wall is presented for sale in several models, however each of them has common features and components, among them:
- air duct;
- ventilation grille;
- inner body.
As for the air duct, it is necessary for the passage of air from the street inside. On sale you can find models, most of which this part is made of plastic. There is also a ventilation grille in the structure, which is located outside. It excludes the ingress of sediments into the interior. It is usually made of metal or plastic.
The supply valve in the wall still has an internal housing, which is represented by a head. It is made of plastic and comes in a demountable form. In its composition there is a filter, which is necessary to direct air into the room. Sometimes there is noise insulation inside the duct. It eliminates the freezing of the wall around the pipe and reduces street noise. The role of insulation of this part is usually used by the polyphon.
Sometimes the wall valve has an adjustment function. The element for implementing this task is located inside. Some models are equipped with a hygro-regulation system. It reacts to the humidity inside and opens the valve if certain indicators are increased.
On sale it is possible to meet the supply valve in the wall, which has a more complex structure. It is equipped with a fan, recuperator, humidity sensor and remote electronic control panel. The recuperator is responsible for heating the air, but the humidity sensor is additionally equipped with a temperature sensor, which makes it possible to automate the operation of the equipment. The electronic control panel allows you to switch the heater and fan off and on.
Checking the ventilation ducts before installing the inlet valve
Air inside comes through a ventilator due to the fact that the pressure in the room is lower than on the street. Differential pressure is created by the operation of the ventilation, sometimes a ventilation duct, sometimes an extractor, is involved. Before you install the air inlet valve in the wall, you should consider that if the hood works poorly, the vent will give less air, because the drop will not be so impressive or it will not be at all. Therefore, before planning the installation of the valve, it must be ensured that the extractor is operating normally.
To do this, open the window, balcony or window, to ensure the influx of fresh air. A lighter or a lighted match must be brought to the ventilation grate. If the exhaust ventilation is operating normally, the flame will be pulled inward. If this does not happen or the flame is deflected in the opposite direction, this indicates that there is no draft or the operation of the ventilation is broken.
The second version of the audit
Check the operation of the ventilation duct without using an open flame. In this case, a sheet of paper is used. A small section should be attached to the ventilation grille. If the paper is pulled, then the ventilation is working normally. In some cases, such verification is useless, which is especially true for hot weather. Air at this time is heavier, so the pressure inside the channel drops. For the same reason, even normally operating ventilation may not attract paper or fire.
What to consider before installation
Many homeowners are now installing ventilation in the apartment wall. The supply air valve eliminates the need for frequent opening or closing of the window. This helps to preserve the hardware. The valve receives less noise, its operation can be adjusted. If you install the valve at the top of the wall or near the battery, you can eliminate the temperature fluctuation in winter.
Inside the room the product will be invisible, it can be covered with curtains. If the installation takes place near the battery, the air will become warm from the radiator. If the valve is installed at the top of the wall, air will flow from above, mixing with warmer masses. Choosing a supply valve in the wall, the installation of which you can carry out independently, you should pay attention to more expensive models. They are usually supplemented by recuperators and fans. The latter are supply and exhaust. Such installations are more effective, but cost 10 times more expensive than conventional airing.
The factors that make it necessary to refrain from installing the air intake valve
Sometimes consumers refuse to install the supply valve due to some circumstances. Among them, the need to make holes in the wall should be highlighted. If the supply system is dismantled, then a through hole will remain on the street. It is impossible not to pay attention to errors during installation. If they are allowed, the wall will freeze, as well as some part of the duct.
When air intake is installed in very cold regions, where the temperature in the winter is kept for a rather long time at a point below -10 ° C, the system will not be used, because the room will be very cold.
Before choosing a supply and exhaust valve to the wall, it is necessary to pay attention to the design features of the device. It is important to consider the number of people who can be in the room at the same time. Buying a model without a fan, you provide a normal influx of fresh air, which will create a microclimate, providing comfort for only one person. This indicates that for 1 hour in the room will receive 30 m 3 of air.
If you decide to install the supply valve in the wall with your own hands, you should take into account that not all models are designed for installation in an arbitrary location of the outer wall. The most successful areas are:
- at a third of the height of the window;
- next to the radiator, under the windowsill.
In the latter case, the air that gets inside will be heated. In the first, it will mix with warm air. Both options are good, because the location allows you to hide the device behind the curtains. As the only rule, which must be taken into account in the first case, is observance of a distance of 30 cm from the valve to the window slope. Otherwise, the site may freeze when the temperature is lowered outside the window.
Preparation of tools
If you decide to install a supply ventilation valve in the wall, then you must follow a certain technology. A process for a valve with a circular duct will be discussed below. To carry out the work, it is necessary to prepare:
- marking tool;
- equipment for diamond drilling;
- means of protection of the respiratory system and eyes.
Stages of installation
Hacksaw during work is needed to cut the air duct. The glue will allow to install the outer grille of the duct. If the fixation is done with bolts, you will need a screwdriver. Rags and polyethylene film are needed in order to lay the floor when carrying out work.
Before starting the installation, you should choose a location, taking into account the above rules. At the intended point, a through hole should be drilled, which should have a slope of 3 ° towards the street. This will prevent the accumulation of moisture, if it gets into the duct.
Methods of work
Next, the master should drill holes for the installation of self-tapping screws, they will have to mount the inner case. The next step will be fitting the duct, for this, the pipe is installed in the hole, which will measure the desired length. Surplus are cropped. Inside, you should install a soundproofing, sometimes it comes in the kit. Otherwise, you should purchase a shell-insulator of the required diameter.
When installing the supply air vents to the wall, the next step is installing the pipe in the hole. The ventilation grill is reinforced from the outside. In the direction of the street, you should direct the blinds, placing them horizontally. The inner case is strengthened by self-tapping screws.
Specifications and reviews of the ventilation valve of the brand "Domvent"
Before you buy a supply valve in the wall, it is recommended to read reviews about it. If we are talking about the "Domvent" model, then you should know that before you is a valve that has in the kit:
- plastic pipe;
- thermal insulation;
- outer round grille;
- housing cover;
- sound absorber;
- valve body;
- set of dowels.
As consumers mention, thermal insulation reliably protects the pipes from freezing. The material should be installed in the area near the outlet. Customers also like the fact that the sound absorber comes with an anti-mosquito net, however, its installation should be carried out independently.
Such supply valve to the wall, the price of which is 1500 rubles. has fairly compact dimensions, which are equal to 180 x 85 x 84 mm. The tube has a length of 650 mm, while its diameter is 40 mm. As a thermal insulation, foam polyethylene protrudes, it looks like a shell with a diameter of 60 mm.
The outer grille is made of plastic, and its outer diameter and height are 60 and 3 mm, respectively. This supply valve to the wall, the characteristics of which should help you make the right choice and are presented above, operates at a temperature of -40 to +80 ° C. An important factor is also the maximum possible air flow. If the pressure drop is 10 Pa, the air mass will be 13 m 3 / h. In the summer, closer to the surface of the earth, this drop will be somewhat less, whereas in winter - more, especially for the valves installed on the upper floors.
This parameter also depends on the quality of the exhaust ventilation. But if the pressure drop is 50 Pa, the amount of incoming air will rise to 21.2 m³ / h, which is true if the wind speed is 5.2 m / s. With a pressure difference of 300 Pa, the amount of incoming air will increase to 49.6 m 3 / h, which is true at a wind speed of 12.2 m / s. On the performance parameters, this valve is inferior to some analogues with a similar design. Comparison can be made with Systemair VTK. This model is capable of passing 50 m 3 / h at a differential pressure of 10 Pa. This indicates that the figure is 4 times greater.