To ensure the flow of air into the residential and non-residential premises today quite often used intake valve. You can install it on the wall yourself; you do not even need to purchase additional tools. This need is due to the fact that in recent years, hermetic window systems made of aluminum, wood and PVC have been particularly popular. They have become the reason that it is quite difficult to create an ideal microclimate for people indoors. The windows have seals, which excludes the flow of fresh air, which was previously present due to the gaps.
Description of wall inlet valves
The inlet valve in the wall is presented for sale in several models, but each of them has common features and components, among them:
- air duct;
- ventilation grille;
- inner case.
As for the duct, it is necessary for the passage of air from the street inside. On sale you can find models, most of which have this part made of plastic. There is in the design and ventilation grille, which is located outside. It eliminates ingestion of precipitation. It is usually made of metal or plastic.
The inlet valve in the wall still has an inner casing, which is represented by a tip. It is made of plastic and comes in a folding form. In its composition there is a filter that is necessary to direct air into the room. Sometimes inside the duct is insulation. It eliminates the freezing of the wall around the pipe and reduces street noise. In the role of insulation of this part is usually used by the polyph.
Sometimes the wall valve has an adjustment function. The element for the implementation of this task is located inside. Some models are equipped with a hygro-regulation system. It responds to moisture inside and opens the valve if certain indicators are elevated.
On sale you can find the inlet valve in the wall, which has a more complex structure. It is equipped with a fan, a heat exchanger, a humidity sensor and a remote electronic controller. The recuperator is responsible for heating the air, but the humidity sensor is additionally equipped with a temperature sensor, this allows you to automate the operation of the equipment. The electronic controller allows you to turn off and on the heater and fan.
Checking the ventilation ducts before installing the inlet valve
Air enters through the ventilator due to the fact that the pressure in the room is lower than on the street. The pressure drop is created by the work of ventilation, sometimes the ventilation duct participates in this, and sometimes the exhaust. Before you install the inlet valve in the wall, you should consider that if the hood does not work well, the ventilator will give less air, because the difference will not be so impressive or it will not be at all. Therefore, before planning the installation of the valve, you must ensure that the hood is working properly.
To do this, open the window, balcony or window to ensure a flow of fresh air. Bring a lighter or a lighted match to the ventilation grill. If exhaust ventilation is working properly, the flame will drag inward. If this does not happen or the flame is deflected in the opposite direction, it indicates that there is no traction or the ventilation is interrupted.
The second test option
You can check the operation of the ventilation duct without using open flame. In this case, apply a piece of paper. Attach a small length to the ventilation grill. If the paper is pulled, the ventilation is working properly. In some cases, such a test is useless, especially for hot weather. The air is heavier at this time, so the pressure inside the channel drops. For the same reason, even properly functioning ventilation may not attract paper or fire.
What needs to be considered before installation
Many homeowners today install ventilation in the wall of an apartment. The inlet valve eliminates the need for frequent opening or closing the window. This contributes to the preservation of fittings. Through the valve comes less noise, its operation can be adjusted. If you install a 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 closed with curtains. If the installation is carried out near the battery, the air will be heated from the radiator. If the valve is installed at the top of the wall, air will flow from above, mixing with warmer masses. Choosing the inlet valve in the wall, the installation of which you can carry out yourself, you should pay attention to the more expensive models. They are usually complemented by recuperators and fans. The latter are inflow and exhaust. Such installations are more effective, but cost 10 times more expensive than conventional ventilators.
Factors forcing the installation of the inlet valve
Sometimes consumers refuse installation of the inlet valve due to certain circumstances. Among them is the need to make a hole in the wall. If the intake 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, then the wall will freeze through, as concerns some part of the duct.
When the inlet ventilation is established in very cold regions, where the temperature in winter stays below -10 ° C for quite a long time, the system will not work, because the room will be very cold.
Before you choose a supply and exhaust valve in the wall, you should pay attention to the design features of the device. It is important to consider the number of people who can simultaneously be in the room. By purchasing a model without a fan, you provide a normal flow of fresh air, which will allow you to create a microclimate that provides comfort to only one person. This indicates that in 1 hour 30 m 3 of air will enter the room.
If you decide to install the inlet valve into the wall with your own hands, then you should take into account that not all models are designed to be installed in an arbitrary place of the outer wall. The most successful are still areas:
- at a third of the height of the window;
- next to the radiator, under the windowsill.
In the latter case, the air entering inside will heat up. In the first, it will be mixed with warm air. Both options are good, because the location allows you to hide the device behind the curtains. The only rule that must be considered in the first case is the observance of a distance of 30 cm from the valve to the window slope. Otherwise, the area may freeze when the temperature outside the window decreases.
Preparation of tools
If you decide to install a ventilation valve in the wall, you should be guided by a certain technology. The process for a valve with a circular duct will be discussed below. For the work should be prepared:
- marking tool;
- a hacksaw;
- diamond drilling equipment;
- respiratory and eye protection.
A hacksaw during the work will be needed for trimming the duct. Glue will allow you to install the outer grille of the duct. If the fixing is carried out with bolts, then you will need a screwdriver. Rags and plastic film are needed to lay the floor when working.
Before installation, you should choose a place, taking into account the above rules. At the target point, a through hole should be drilled, which should have a slope of 3 ° towards the street. This will eliminate the accumulation of moisture if it gets into the duct.
Method of work
Next, the master should drill the holes for the installation of screws, they have to mount the inner case. The next step will be fitting the duct, for this pipe is installed in the hole, which will measure the desired length. Surpluses are cut off. Inside you should install noise insulation, sometimes it comes in the kit. Otherwise, you should buy insulation-shell of the required diameter.
When the inlet ventilation valves are installed in the wall, the next step is to install the pipe in the hole. The ventilation grill is reinforced outside. To the side of the street should direct the blinds, placing them horizontally. The inner case is fastened to the screws.
Characteristics and reviews of the ventilation valve brand "Domvent"
Before you buy the inlet valve in the wall, it is recommended to read the reviews about it. If we are talking about the Domvent model, then you should know that you have a valve in front of you, which has:
- plastic pipe;
- heat insulation;
- outer round grille;
- housing cover;
- valve body;
- set of dowels.
As consumers mention, heat insulation reliably protects pipes from freezing. The material should be installed in the area near the outlet. Buyers also like the fact that the silencer is supplied together with an anti-mosquito net, but it should be installed independently.
This inlet valve in the wall, the price of which is 1,500 rubles. It has a fairly compact size, which is 180 x 85 x 84 mm. The pipe has a length of 650 mm, while its diameter is 40 mm. Foamed polyethylene acts as thermal insulation, 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 inlet valve in the wall, the characteristics of which should help you to make the right choice and are presented above, operates at a temperature from -40 to +80 ° C. An important factor is also what is the maximum possible air flow. If the pressure drop is 10 Pa, then the volume of air masses will be equal to 13 m 3 / h. In the summer, closer to the ground this difference will be slightly less, while in winter it will be more, which is especially true for valves installed on the upper floors.
This parameter also depends on the quality of operation of exhaust ventilation. But if the pressure drop is 50 Pa, the amount of air flowing in will increase to 21.2 m³ / h, which is true if the wind speed is 5.2 m / s. With a pressure drop 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. In terms of performance, this valve is inferior to some analogues with a similar design. Comparison can be carried out with Systemair VTK. This model is capable of passing 50 m 3 / h at a pressure drop of 10 Pa. This indicates that the indicator is 4 times more.