How to make a do-it-yourself wall inlet valve?

What are

First you need to figure out what filters are. Surely every home has a jug with a replaceable cartridge for water purification. The main component in such cassettes is charcoal. Less commonly, they also use additional substances to soften water or remove excess impurities. However, such filters are quite noticeably different in price from the usual ones. In addition to water filters, there are air filters that should work to clean the air in the room. Most often they are installed in workshops with production, where toxic waste is possible. However, in our time in cities, these filters are also becoming a necessity.

Violation of air exchange in the apartment

Ventilation plays an essential role in organizing an optimal indoor climate. The lack of sources of fresh air instantly affects the well-being of the people who are in it. To maintain the vital functions of a person, he needs oxygen, which he successfully receives from the air.

Over time, in a closed space, there is less and less O2, which leads to the formation of asphyxia. Initially, it practically does not manifest itself, being expressed only in the appearance of shortness of breath or slight malaise. Gradually, dizziness, impaired coordination in space, up to loss of consciousness, is added to such symptoms.

Violation of air exchange in a room affects not only a person's well-being, but also the quality of the environment. Being inside the room, the air masses gradually heat up, as a result of which they rise up and are located near the ceiling. In the absence of a supply channel, they do not have time to cool down, lose oxygen and practically do not move.

Under these conditions, a slight increase in humidity can lead to mold growth or accelerated corrosion processes. The greatest risk areas are the kitchen and the bathroom, where contact with water is constantly carried out. It is in these rooms that the appearance of a fungus is most often observed, which can lead to the formation of various diseases.

Ventilation of old-style apartment buildings (and most new buildings) is carried out by natural circulation of air masses. Their inflow is carried out through cracks in window frames and door frames. In this case, the exhaust air is removed through a common riser.

Over time, the exhaust grilles gradually clog up, debris accumulates inside the channel, old windows and doors are replaced with new ones. As a result, the circulation of air flows gradually decreases and may disappear altogether.

The simplest way out of this situation is to clean the outlet channels and install the supply valve in the wall.

The benefits of filters

How useful filters are, we can talk for a long time. Their main function is cleaning. Whether it is water or air, or moonshine, the filter should, in the opinion of those who use it, remove all harmful and leave only useful. In fact, removing absolutely everything and immediately will not work. As a consequence, it is necessary to purchase devices with several cleaning stages. So what do the filters remove? Water-based ones mechanically remove dirt, pieces of rust from the water supply system, improve taste and quality, and fight against unpleasant odors, if any. Charcoal helps fight some living organisms that can be harmful to health. As an excellent natural absorbent, it is able to retain many harmful bacteria, but not all. Do not rely only on the miraculous properties of charcoal.For example, he is not able to neutralize radiation, remove heavy metals or salts. Using a filter to clean moonshine, it should be borne in mind that not all fusel oils will be completely removed.

How does ventilation work in residential buildings?

Exhaust and supply ventilation is of two types:

With a natural impulse. For exhaust and inflow, the phenomenon of convection is used, when the heated air, which has a lower mass, rises up.
With artificial (mechanical) motivation. Air movement is provided by fans.

Most of the apartment buildings and private houses are equipped with a natural draft. For this, vertical channels serve, the entrances to which are located in the rooms of the bathroom and the kitchen in the form of gratings installed under the ceiling. The exits are located on the roof of the building. The height difference and the temperature difference between the outside and inside air cause a draft in the duct, which creates a vacuum in the room. In this case, natural forced ventilation was provided through leaks or special cutouts in wooden windows.

New windows and solid front doors seal the apartment, blocking the access to fresh air from outside. In this case, the scheme of operation of the supply ventilation changes, since air masses begin to flow into the kitchen or bathroom from other rooms. A new air balance is established in the house with a slight negative pressure. It often happens that as a result, a vertical shaft of a larger cross-section (usually a kitchen one) overturns the draft of a smaller channel in the toilet and a cold stream begins to flow from there in winter. The phenomenon is especially noticeable in strong winds, its effect increases traction and it becomes very cold in the bathroom.

Many homeowners believe that ventilation is about installing an axial fan instead of an exhaust grille. In the absence of an inflow from the street, the fans of the bathroom and the kitchen hood alternately overturn the draft of another shaft, sucking in air masses from the roof through it. A surrogate supply ventilation is formed, with it, untreated (and cold in winter) air randomly enters the house. With the simultaneous operation of the fans, there is no inflow from the street at all, but due to the vacuum created in the apartment, unpleasant odors from neighbors may appear.

For reference: the arrangement of vertical exhaust shafts provides only one entrance in one apartment and one exit on the roof. The opinion that several apartments are connected to the mine is erroneous, for each room of the kitchen and bathroom has its own channel.

Extraneous odors do not penetrate through the ventilation ducts, but through the passages of pipes of gas or heating pipes. In an extreme case, one of the neighbors, in violation of all norms, made a hole from their bathroom into your exhaust shaft. In private houses, this phenomenon does not happen, and the lack of inflow is not so noticeable, since the volume of the premises is larger. But the processes are similar and the parameters of the internal microclimate are not better.

Output: the supply ventilation device must be performed in any building in which people live or work. The hood will not function without the inflow.

Buy or make a filter

So, a purchased filter requires regular replacement with a new one. This is due to the fact that over time, dirt accumulates in the cassette, which will gradually seep into the filtered water and make it worse in quality than that coming from the water supply. Extra costs make you think about how to make a charcoal filter with your own hands. If you have the skills to make any devices, then you can think about assembling some kind of structure that will save the family budget and not harm your health. However, it is worth calculating how economical it will be.

Features of the

The system can be installed on a turnkey basis using the services of specialists. But the cost of installation is often too high for the average tenant. Therefore, we will consider the installation of ventilation of the supply and exhaust type with our own hands (read about installing ventilation with our own hands here).

There are several ways to organize a supply and exhaust ventilation system:

Installation of additional coolers in the ventilation duct shafts.
Using the air conditioner as an exhaust device.
Installation of additional ventilation ducts, trimming window seals.

The first two methods work on a compulsory basis. They drive a large volume of air due to the operation of fans. The second method is more interesting, since it does not require large investments in additional electrical equipment. Let's get to know him better.

Operating principle

The basic principle of ventilation is the difference in pressure of air masses at different levels of the room. It is necessary to organize the suction and exhaust shafts so that there is a significant difference in height between them.
The physics of the process is similar to the work of communicating vessels. When one of them is raised to a sufficient height, the liquid begins to overflow. The same mechanics work in air exchange. Air circulates when there is a difference in height between the inlet and outlet of the ventilation shaft.

To enhance the effect, you can use additional fans that will pump air masses even faster.

Advantages and disadvantages

By supply and exhaust ventilation we mean the correct organization and output of ventilation ducts with forced air exhaust. System advantages :

Ventilation control... You can customize the system to fit your needs, covering or opening ventilation ducts as needed.
Constant supply of fresh air regardless of the weather and pressure column... Even if the weather outside is bad, and the air pressure does not allow the air masses to fully and independently move through the room, you can increase the speed on the cooler and forcibly speed up the air exchange.
Installing filters... The intake system can clean the incoming air through additional membranes.

However, the solution has its drawbacks:

Additional equipment installation costs, additional electricity bills.
Arrangement of ventilation ducts, shafts and openings for air outlet and inlet, which "steals" space, spoils the interior.
Noisiness. Even one cooler creates a faint hum in the room. Two or more fans with their noise can "press" on the head or interfere with sleep.

Despite all the cons, the supply and exhaust system gives full control over ventilation. This factor is fundamental and decisive in its choice.

What will come in handy

In order to make a charcoal filter with your own hands, you will need a container that is not a pity to donate for a good purpose (for example, a five-liter plastic flask), oddly enough, fine gravel, river sand, charcoal, as well as gauze, cotton wool and lutrasil. Some masters insistently suggest replacing cotton wool and gauze with synthetic material, for example, synthetic winterizer. This is due to the fact that synthetics are more durable, but at the same time their filtering qualities are no worse than those of natural materials. In addition, a clerical knife, a drill with a thin drill, and sandpaper for cleaning irregularities are useful.

Installation of the supply ventilation valve

The finished hole does not have to be completely horizontal. A slight slope towards the street is allowed, due to which the resulting condensation will be quickly removed from the ventilation duct.

The valve installation process is as follows:

an air duct is laid in the hole;
the protruding parts of the duct are marked with a pencil;
the branch pipe is removed from the wall and cut according to the marks applied;
the air duct is again placed in the wall and fixed with mounting foam (all voids between the concrete surface and the branch pipe are blown out with foam);

a filter and a thermal insulating element are installed inside the channel;
a protective grill is mounted on the outside to prevent insects from entering the air duct (it can be simply inserted or screwed to the outer wall with self-tapping screws);
from the inside, a decorative cap is installed on the air duct, which is also an air flow regulator.

When placed correctly, the ventilation inlet valve will be completely invisible. In this case, the air flow rate is regulated by decreasing or increasing the gap on the decorative cap. If necessary, it can be completely closed or, conversely, completely opened.

Under normal conditions, the supply valve is able to fully meet the room's demand for fresh air, since it guarantees its flow in the amount of 45-55 cubic meters / hour.

Clean water is the key to health

Getting started making the simplest water filter, you need to remember that it also has its drawbacks. Inexpensive materials will also have to be changed, and quite often. In addition, improper assembly of this design can lead to poor water quality. And this will nullify all the efforts made. If you still dare to make a charcoal water filter with your own hands, you need to start with the lid. You need to make several small diameter holes in it with a drill. Clean up irregularities. Then you need to cut off the bottom of the bottle. Next, inside the bottle, gauze, cotton wool or synthetic winterizer is placed on the lid. You can do everything at once, but this will not greatly affect the quality of the water, but it is capable of retaining water inside the filter.

It is desirable to separate the next layer from the previous one with an additional barrier. Some people use a coffee filter. Others suggest cutting a circle out of plastic so that it covers the previous layer, and making many small holes in it. After smoothing out the irregularities on the homemade mesh, you need to lay the coal. This can be activated charcoal from a pharmacy or self-prepared from birch wood. Such coal will definitely cope with its task and will not add unpleasant odors and harmful resins to the water. It is advisable to separate the next layer from the coal again, as it will be sand. Ordinary sand can mix with coal and completely clog the filter, so it is advisable to use quartz. Next, gravel or zeolite is laid. On top, for the coarsest and most primitive cleaning, a cotton cloth is sometimes used. However, experts strongly recommend replacing natural fiber fabric with lutrasil. The first filtered water must be drained off, as it is not usable.

This filter is able to purify a small amount of water. Its main disadvantage is cleaning speed. And you won't be able to use this filter for a long time - it gets dirty too quickly.

Domvent: question-answer

Ventilation valve "DOMVENT" in the online store ECOTECO

I use warm floors as heating. Is it possible to install your ventilation valves?

Alexei.

Unfortunately, we do not recommend installing Domvent ventilation valves not above the battery, because at temperatures below -50C, condensation may fall on the body, and a cold floor zone may form under the valve. Work on the design of a device for ventilation of apartments with warm floors is underway, but so far not on sale. In cottages where the first floor has underfloor heating, and on the second floor there are radiators, we install Domvent ventilation valves above the radiators of the second floor. And for the first, we can recommend you to put wall KIV or window Aereko.

Good day! When cold air from the street meets warm air in the room, condensation will fall out. Where will it drop? And won't a fur coat grow in the pipe of the supply valve, and then flow out onto the facade in the summer?

Boris.

As you have noticed, condensation falls out in the place where cold and humid warm air meet. In this device, this place is in the air above the battery, therefore, condensation does not form.

The second possible location: on the surface of the device. But condensation does not form there, because the unit is washed by a warm stream from the battery and is also insulated from the inside.

The third place for the formation of condensation: inside the tube - it is impossible, because You yourself noticed there is no second condition in it: warm, moist air.

Only cold dry air comes from the street. And since with properly functioning ventilation, air only goes inside, we have considered all the options with you.

In case of improper installation (for example, not above the battery), the heating is turned off, etc. condensate may fall on the surface of the valve, which is eliminated by closing (or decreasing) the valve of the indoor unit.

Thanks for the question.

Do any of the window installers put your valves right away when replacing them?

Yes, they do. It is convenient, and there is a good additional income for window workers. Window companies installing our ventilation valves can be found on the Internet or advertised in the media.

And if my A4 sheet sticks to the ventilation grill even when the bathroom door is closed, do I need a valve on this door?

Adhesion of the sheet shows that there is traction in the ventilation duct, and the grilles in the doors are needed for sufficient air access from the apartment to the bathroom. If there is a sufficient total gap between the door and the box for air passage, then the valve can be omitted.

On your website it is written "Our masters, coming to the installation, first of all check the operation of the exhaust ducts and in case of poor performance, either immediately fix the problem, or, if it is not immediately possible, give recommendations on how to solve the problem." How can you check the operation of the exhaust ducts yourself? How can you determine in advance whether a door valve will be needed, or if you can get by (and what will happen if you just do not close the door)?

Ventilation check:

Open the window and door in the bathroom, apply A4 sheet to the exhaust ventilation grill. If he "stuck", then everything is fine. If not, then:

We tear off a fine-mesh mesh from under the grill (which gets clogged in two weeks with dust and therefore does not allow air to pass through (and, in principle, is not needed), if there is a fan, then we buy a double grill (part of the grill, part of the space for the fan) so that the air passes through into the ventilation duct and with the fan off.

We call the management company (ZhEK, HOA, etc.), they must fix it for free.

Compared to an open door, the door valve is more comfortable (maintains silence); instead, you can put simple door grilles or a gap under the door of at least 1 cm.

If the door is not closed, then when you, for example, wash, all the moisture (all steam) will go into the apartment and increase the humidity in the entire apartment, which is not good for the home climate. Yes, and it will not be very comfortable for you to wash, and the children will sleep at this time.

If there are grilles at the bottom of the closed door, air from the apartment will enter the bathroom below and humid steam will be discharged into the ventilation grill at the top, but it will not go into the apartment.

In the kitchen and toilet, the situation is similar for all points.

Is your system suitable for a private house or cottage?

Nina Alexandrovna, Vsevolozhsk.

Dear Nina Alexandrovna!

For a country house, our system is ideal, because any house has exhaust ventilation, as well as stoves and fireplaces, which also work to remove stuffy air. For a comfortable stay, only 7-10 Domvent ventilation valves are needed per cottage (they are easily installed in one day). They do not make noise, which is especially important in suburban living, and will please you with the cost in comparison with complex systems.

Can a ventilation system be installed without drilling a hole in the wall?

Maria, St. Petersburg.

Dear Maria!

The Home ventilation system, like any other natural ventilation system, works according to the following principle: it starts up fresh outside air and removes the polluted inside air into the ventilation mines. Therefore, an inflow of fresh air from outside is necessary, i.e. opening to the street is required.

But don't let that scare you, because today, this operation for drilling a hole by an experienced craftsman takes 5-10 minutes (the entire installation of the Domvent ventilation valve will take about an hour) and, practically, without dust, this is permitted by law and does not pose any threat to the supporting structures.

Explain how to calculate how many DOMVENT valves are needed for adequate ventilation in the room?

Alexey, St. Petersburg.

Dear Alexey!

The DOMVENT ventilation valve is placed under each window of the living quarters (first in the rooms, then, if necessary, in the kitchen). Under normal operating conditions, one valve is enough for 15-17 m2 of a room. But if you have a lot of people or not very good natural draft (for example, the last floor), then you need to install two ventilation valves. Only then take into account the size and power of the battery. For a one-room apartment, we recommend at least 2 houses (or two in a room, or one in a room and one in a kitchen). If you are in doubt, send a description of your apartment and we will help you.

Please tell me which tool is needed for self-installation of the DOMVENT valve, and how is the installation carried out?

Sergey, Moscow.

Dear Sergey!

The installation process is straightforward. You can install the DomVent valve using a household perforator (SDS-Plus). You can see the step-by-step installation process and our recommendations here. If you are going to start a business or launch a new service for the installation of DOMVENT ventilation valves, then you will need to buy a larger perforator (SDS-Max) and a pair of 40mm diameter drills. Details here and here.

Hello, are you wondering if it is possible to purchase a valve from you, and do the installation yourself? And how, in this case, is it delivered?

Alexey, Rostov-on-Don.

express delivery with the arrival of a courier to the address indicated by you (1-4 days);

Russian post (2-3 weeks)

A description of self-installation can be found on the website in the Information section "Putting DOMVENT with our own hands".

Tell me, can the installation of such a valve cause drafts?

Albina, St. Petersburg.

Dear Albina! No, he can not! The fact is that the air volume of 13m3 / hour leaving the DOMVENT ventilation valve, unlike open transoms, heats up all on the battery and rises warm up and in no way can create a draft.

Can I install your Home Ventilation if I live on the 1st floor and is it not dangerous? Will not all exhaust gases from cars go to my apartment?

Valentina Ivanovna, St. Petersburg.

Dear Valentina Ivanovna! Quite the opposite, replacing open windows with the Home Ventilation system will make your apartment impenetrable for thieves.

And the DOMVENT ventilation valve will hold back poplar fluff, insects, part of the dust and constantly airing your apartment, will not allow harmful substances from furniture, building materials to accumulate in it and, which is very important for the first floor, will not allow odors and harmful substances rising from the basement to accumulate!

Hello, please tell me, will it turn out that, along with the air, midges and insects will get into my apartment?

Alena, St. Petersburg.

Dear Alena! A mosquito net is built into the construction of the noise absorber, which will protect you from insects and poplar fluff. By removing the cover once a year (for example, when washing windows) with one finger (even with wet hands), you can easily remove the muffler and shake it out or even wash it. It will take 1 minute of your time.

How long will it take to install one such window valve and how many window and door valves will need to be installed for a 3-room apartment (we have 4 windows and 4 doors, one for each room)?

Mikhail, Kolpino.

Dear Michael!

Installation of one valve takes about an hour, the old foundation takes a little longer. For a standard three-room apartment, it is necessary to install three DOMVENT valves in the living rooms (you can also put them in the kitchen as an additional one). DOORVENT door valves must be installed in plumbing doors (toilet, bathroom) so that moisture and odors are immediately discharged into the ventilation mine, and not into the apartment. And in all living rooms.

But if there are gaps under your doors (at least 1 cm), then the installation of the DVERVENT ventilation valves is not necessary. If the living conditions in your apartment differ from the standard ones (many people live, the kitchen is a place for gatherings and is tightly closed by a door, etc.), then it is better to consult with professionals or call us by phone.

Why drill a hole in the wall when you can just buy a window with a valve?

Vasily, St. Petersburg.

Dear Vasily!

We do not like to scold our competitors, because they also do a wonderful job - they save people from problems with stuffiness. Therefore, we will talk about the advantages of DOMVENT.

Firstly, the air entering through the DOMVENT valve immediately heats up and enters the room warm (and there are no drafts, even in severe frosts!).

Secondly, the DOMVENT damper does not reduce the window light opening, does not violate the window warranty, and protects against noise much better (you will be very quiet!).

Thirdly, with comparable technical characteristics, DOMVENT will be half the price.

Fourthly, DOMVENT can be delivered at any time (before renovation, after renovation, during or after window installation).

Fifth, any person and even a three-year-old child can handle the maintenance and cleaning of the DOMVENT ventilation valve!

Can your ventilation regulate the room temperature and keep it cooler when I need it?

Alexander, Shlisselburg.

Dear Alexander!

During the heating season, the HOME VENTILATION system will supply cold air to the heating radiator and you can regulate the room temperature by reducing the air flow with the damper. And if your battery has a heat regulator, then you can achieve the ideal climate in each room individually. In summer, you need an air conditioner to cool the fresh air. And the combination of Home Ventilation and Air Conditioning is ideal as they complement each other. DOMVENT delivers fresh, oxygenated air, and the air conditioner cools it, and does not drive cold CO2 around the room, as in the absence of ventilation.

Can you buy a valve in gold color or somehow hide this box? The curtains do not hide it - we have Roman blinds. Thanks in advance for your reply.

Olesya, St. Petersburg.

Dear Olesya!

Ventilation valve DOMVENT is made of window ABS plastic, which can be easily painted even from a simple spray can. You can do this yourself or we will help you if you choose the tone of paint you need. The DOORVENT door valve has 4 grille colors (gold, bronze, silver and white) and is matched to the color of the door handles. In the case of non-standard colors, We can choose the color you need or also paint.

Please answer the question, our neighbors made repairs at our house and blocked all the ventilation outlets for us, will your device help in this situation? There is simply nothing to breathe in the apartment! Thanks.

Ivan Nikolaevich, St. Petersburg.

Dear Ivan Nikolaevich!

In such a situation, you need to contact the management company (or ZhSK) serving your house with a request to eliminate the poor work (or non-work) of the ventilation shafts. And housing cooperatives must find out the problem and fix it (not you and your neighbor, but they themselves).Otherwise, file a lawsuit against the housing cooperative. Without normally working exhaust ducts, the work of Home ventilation will be ineffective.

Our foremen, coming to the installation, first of all check the operation of the exhaust ducts and in case of poor performance, either immediately fix the problem, or, if it is not immediately possible, give recommendations on how to solve the problem.

Often there is a situation when the residents of the house installed a ventilation grill with a mosquito net (they are sold in a set), which in 2 months becomes densely clogged with dust and stops letting in air. Cleaning or removing this mesh usually solves this problem.

Is it necessary to install the valve just above the battery? I have 7 cm places there. Will it fit?

Sasha, St. Petersburg.

Dear Sasha!

Yes! Installation of the DOMVENT vent valve is required above the battery. In some cases, it is possible to install a supply pipe above the pipes (as in your case) with air supply to the battery. The second option is to slightly lower the battery. There are several more options for solving this moment. You need to watch the master on the spot.

How much does installation work cost?

Installation Ventilation valve "DOMVENT" - 1000 * rubles. for 1 valve (* with a wall thickness of more than 60 cm and complex installation - 1300 rubles for 1 valve)

Installation in the door "DOORVENT" - 500 rubles. for 1 door

High-quality painting in any color according to the RAL catalog - 1500 rubles.

Departure of craftsmen within St. Petersburg - 500 rubles.

Departure of masters in the Leningrad region - 500 rubles. + 20 rubles / km. (outside the ring road)

I use underfloor heating as heating. Is it possible to install your ventilation valves?

Alexei.

Boris.

As you have noticed, condensation falls out in the place where cold and humid warm air meet. In this device, this place is in the air above the battery, therefore, condensation does not form.

The second possible location: on the surface of the device. But condensation does not form there, because the unit is washed by a warm stream from the battery and is also insulated from the inside.

The third place for the formation of condensation: inside the tube - it is impossible, because You yourself noticed there is no second condition in it: warm, moist air.

Only cold dry air comes from the street. And since with properly functioning ventilation, air only goes inside, we have considered all the options with you.

Thanks for the question.

Do any of the window installers put your valves right away when replacing them?

Yes, they do. It is convenient, and there is a good additional income for window workers. Window companies installing our ventilation valves can be found on the Internet or advertised in the media.

And if my A4 sheet sticks to the ventilation grill even when the bathroom door is closed, do I need a valve on this door?

How can you check the operation of the exhaust ducts yourself? How can you determine in advance whether a door valve will be needed, or if you can get by (and what will happen if you just do not close the door)?

Ventilation check:

Open the window and door in the bathroom, apply A4 sheet to the exhaust ventilation grill. If he "stuck", then everything is fine. If not, then:

We call the management company (ZhEK, HOA, etc.), they must fix it for free.

Compared to an open door, the door valve is more comfortable (maintains silence); instead, you can put simple door grilles or a gap under the door of at least 1 cm.

In the kitchen and toilet, the situation is similar for all points.

Is your system suitable for a private house or cottage?

Nina Alexandrovna, Vsevolozhsk.

Dear Nina Alexandrovna!

Can a ventilation system be installed without drilling a hole in the wall?

Maria, St. Petersburg.

Dear Maria!

Explain how to calculate how many DOMVENT valves are needed for adequate ventilation in the room?

Alexey, St. Petersburg.

Dear Alexey!

Please tell me which tool is needed for self-installation of the DOMVENT valve, and how is the installation carried out?

Sergey, Moscow.

Dear Sergey!

Hello, are you wondering if it is possible to purchase a valve from you, and do the installation yourself? And how, in this case, is it delivered?

Alexey, Rostov-on-Don.

express delivery with the arrival of a courier to the address indicated by you (1-4 days);

Russian post (2-3 weeks)

A description of self-installation can be found on the website

Tell me, can the installation of such a valve cause drafts?

Albina, St. Petersburg.

Can I install your Home Ventilation if I live on the 1st floor and is it not dangerous? Will not all exhaust gases from cars go to my apartment?

Valentina Ivanovna, St. Petersburg.

Dear Valentina Ivanovna! Quite the opposite, replacing open windows with the Home Ventilation system will make your apartment impenetrable for thieves.

Hello, please tell me, will it turn out that, along with the air, midges and insects will get into my apartment?

Alena, St. Petersburg.

How long will it take to install one such window valve and how many window and door valves will need to be installed for a 3-room apartment (we have 4 windows and 4 doors, one for each room)?

Mikhail, Kolpino.

Dear Michael!

But if there are gaps under your doors (at least 1 cm), then the installation of the DVERVENT ventilation valves is not necessary. If the living conditions in your apartment differ from the standard ones (many people live, the kitchen is a place for gatherings and is tightly closed with a door, etc.), then it is better to consult with professionals or write to us

Why drill a hole in the wall when you can just buy a window with a valve?

Vasily, St. Petersburg.

Dear Vasily!

We do not like to scold our competitors, because they also do a wonderful job - they save people from problems with stuffiness. Therefore, we will talk about the advantages of DOMVENT.

Firstly, the air entering through the DOMVENT valve immediately heats up and enters the room warm (and there are no drafts, even in severe frosts!).

Secondly, the DOMVENT damper does not reduce the window light opening, does not violate the window warranty, and protects against noise much better (you will be very quiet!).

Thirdly, with comparable technical characteristics, DOMVENT will be half the price.

Fourthly, DOMVENT can be delivered at any time (before renovation, after renovation, during or after window installation).

Fifth, any person and even a three-year-old child can handle the maintenance and cleaning of the DOMVENT ventilation valve!

Can your ventilation regulate the room temperature and keep it cooler when I need it?

Alexander, Shlisselburg.

Dear Alexander!

During the heating season, the HOME VENTILATION system will supply cold air to the heating radiator and you can regulate the room temperature by reducing the air flow with the damper. And if your battery has a heat regulator, then you can achieve the ideal climate in each room individually.In summer, you need an air conditioner to cool the fresh air. And the combination of Home Ventilation and Air Conditioning is ideal as they complement each other. DOMVENT delivers fresh, oxygenated air, and the air conditioner cools it, and does not drive cold CO2 around the room, as in the absence of ventilation.

Can you buy a valve in gold color or somehow hide this box? The curtains do not hide it - we have Roman blinds. Thanks in advance for your reply.

Olesya, St. Petersburg.

Dear Olesya!

Ivan Nikolaevich, St. Petersburg.

Dear Ivan Nikolaevich!

In such a situation, you need to contact the management company (or ZhSK) serving your house with a request to eliminate the poor work (or non-work) of the ventilation shafts. And housing cooperatives must find out the problem and fix it (not you and your neighbor, but they themselves). Otherwise, file a lawsuit against the housing cooperative. Without normally working exhaust ducts, the work of Home ventilation will be ineffective.

Is it necessary to install the valve just above the battery? I have 7 cm places there. Will it fit?

Sasha, St. Petersburg.

Dear Sasha!

Ventilation valve "DOMVENT" in the online store ECOTECO

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Down with smell and smoke

The next item that often worries city dwellers is air purification. It is still very difficult to find such a device on the free market. So again you have to think about how to make a charcoal filter for air with your own hands. If it is available, for example, in the hood, then you need to see if it is disposable or reusable. If it is reusable, then it will be enough to open it, remove the used charcoal, rinse thoroughly, dry it and add new filler. If it is disposable, you will have to buy a new one or assemble a charcoal filter for the hood with your own hands.

All components are assembled again. It can be a standard hood for a hood, into which a structure of two mosquito nets connected to each other is inserted with activated charcoal poured between them, rubbed into granules or powder, depending on the mesh density. Some people suggest using sieves with metal meshes of different diameters.Charcoal should be poured into a sieve of a larger diameter, pressed with the bottom of a sieve of a smaller diameter and well secured with a sealant. And install this structure into the hood body. The peculiarity of such a filter is that the density of its absorbent will have to be adjusted according to the power of the exhaust fan. Since a layer that is too thick and dense may not allow enough air to pass through, and a thin and thin layer will not cope with its cleaning functions.

How to make a charcoal filter for ventilation with your own hands can be guided by the following instructions. For its manufacture, two pipes of different diameters, plugs, mesh, agrofibre and coal are used. Holes are drilled in the pipes. Then each is wrapped with mesh and agrofiber. The inner pipe is installed exactly in the center of the plug and secured with glue or other means. The larger pipe is installed later and also secured. Coal is poured between them. It remains only to put on one more plug on top. The filter is ready.

Options for building ventilation in the workshop

In search of the best ways to build ventilation for your own workshop, you have to revise many possible options before finding the most suitable one.

To facilitate this search, consider, as an example, the most successful, in our opinion, solutions for the independent arrangement of ventilation in the workshop.

Option # 1 - exhaust ventilation from plastic pipes

For the implementation of this project were used: a used centrifugal fan "snail" with an electric motor of 2, 2 kW, a barrel of 40 - 50 liters with a neck corresponding to the inlet of the "snail", plastic sewer pipes 110 mm.

A centrifugal fan, as opposed to an axial fan, creates more pressure. This makes it possible to build on its basis more extended and branched ventilation systems in the workshop.

A few words about the material of the air ducts. The use of plastic sewer pipes for ventilation is a fairly popular option, primarily due to the price. They are several times cheaper than plastic and steel ventilation ducts.

But sewer pipes also have their drawbacks:

they cannot be used in places where the temperature can exceed +60 degrees;
they do not have an antistatic coating, so it is not advisable to use them for chip and dust removal systems;
their diameters do not meet the standards of ventilation systems, which makes it difficult to interface with other equipment.

Despite these disadvantages, in most cases, sewer pipes are successfully used as air ducts. The considered variant of the ventilation system device made of scrap materials was no exception.

In this project, all the main units of the hood for the locksmith's workshop were made by hand. Let's briefly describe the stages of the work done.

So, at first, a major overhaul and revision of the centrifugal fan was made. The revision concerned the inlet pipe. More precisely, due to its absence, it was necessary to make a new one from a small sealed barrel, the volume of which would allow the fan to gain the required vortex flow speed.

A side hole was made in the barrel and a piece of plastic pipe was glued in, taking into account aerodynamics, so that the inlet flow would go along the inner circumference of the barrel. Then, a duct made of plastic pipes was installed under the ceiling in the center along the entire workshop.

The barrel in this project plays the role of a receiver, which is created with the prospect of expanding the ventilation system by embedding several inlet pipes

The centrifugal fan creates a powerful vortex flow in the barrel, which ensures rapid air circulation throughout the system. Its strength is so great that it keeps the grinder's saw blade at the farthest inlet.

The parameters of the exhaust system are as follows:

engine power 2, 2 kW;
fan speed 2800 rpm;
productivity 1000 m3 / h - 1500 m3 / h;
the time for drawing the entire volume of air out of the workshop is 5 - 10 minutes.

The whole system has 6 air inlets closed with self-made adjustable plugs. They are made of standard plastic ones with cut-out slots in the lid, and the same slots in a movable metal plate, fixed on one axis. With their mutual rotation, the air flow is regulated.

Option # 2 - dust collector from KAMAZ filter

Since factory dust removal systems are quite expensive, home-made dust collectors based on air filters from large trucks such as KamAZ, tractors or combines have become widespread.

By complementing such a filter with a fan, you get a good air purifier that takes up a minimum of space and can be easily carried to any part of the workshop.

The performance of such a system is regulated by the selection of fan power. Such filters are capable of purifying air volume from 500 to 1000 m3 per hour, depending on the type. They can be connected to fans with a capacity of up to 300 - 400 m3 / h.

The dust extractor can be hung from the ceiling. The mount should allow the equipment to be removed and cleaned periodically. This is best done with compressed air outdoors.

Assembling an air purifier is quite simple. To do this, you need to cut out the flange, fix the hairpin on the axis to the length of the filter. Next, glue the fan to the flange and screw the entire structure to the filter.

Due to their ease of manufacture and low cost, several such filters can be made and significantly improve the air in the entire workshop.

Option # 3 - aspiration system in the carpentry workshop

The main role in the proposed dust extraction system is played by the JET factory chip extractor. The cost of such equipment, depending on the parameters, is 15-40 thousand rubles. Most models have a cloth dust collector and a chip bag.

For this option, the best model JET DC-1200CK with a paper filtering element in the form of a removable drum was chosen. It is equipped with a manual internal cleaner that removes the main dust without removing the filter.

Ventilation pipes were selected for maximum ESD protection and least resistance to air flow. Coiled galvanized steel pipes meet these requirements in the best way.

When they were installed, a multimeter was used to check the reliability of the electrical contact in the connection nodes. If necessary, the contact was reinforced with two self-tapping screws from opposite sides. The entire pipeline was grounded. In addition, the joints were wrapped with aluminum tape for tightness.

The work in the workshop is organized in such a way that all workbenches and machines can be moved on wheels to the center of the room and connected to the exhaust corrugation as they are used. This ensures that the workshop is almost perfectly clean and dust-free.

To reduce noise and dust, the exhaust unit was moved outside the workshop to the adjacent boiler room. The supply line is routed through an opening in the wall under the ceiling. The inlet is fixed to the ceiling in the middle of the workshop. He is wearing a corrugated two-meter pipe made of transparent plastic.

In addition to aspiration, air exchange in the carpentry workshop is provided by supply and exhaust ventilation.

Clean as a tear

How to bypass the filtering of a Russian folk drink in this thread? You can make a charcoal filter for cleaning moonshine with your own hands by analogy with a water device. The principle of operation is the same. Moonshine is poured into an inverted bottle with absorbents embedded in it and passively decanted into a prepared container.However, the sand and gravel will have to be removed in this case.

To clean the moonshine, experts recommend buying special coal. It is made from birch wood or coconut by pyrolysis and is capable of retaining a large amount of fusel oils. However, when collecting a charcoal filter for moonshine with your own hands, you need to take into account that plastic in this situation plays the role of an oxidizer. It is better to use a glass container or stainless steel flask for this purpose. Better yet, purchase a ready-made filter. In terms of costs, it is not much different from a homemade one. But there is much less hassle with collecting the necessary materials.

Home appliances protection

Making a charcoal filter with your own hands is quite simple. If you need to filter out a little water for drinking or a little more in reserve, then this seems real. But protecting home appliances with homemade filters is not yet possible. For this scale, more durable materials are needed. A plastic bottle will definitely not work, as well as a PVC pipe. In this situation, you will have to rely on specialists who have developed and manufactured functional structures that can protect home appliances from dirt in the water.

Summing up

So, making a charcoal filter with your own hands is not difficult. Anyone can handle it. However, this method should be used as a last resort, since such devices, made at home by inept craftsmen, can do more harm than help with water purification. The desire to save money and save the family's budget can lead to more tangible costs in case of possible poisoning with water passed through such filters.