The coolant provides us with heat during the cold season. However, situations often arise in which the battery does not warm up completely. They arise due to the accumulation of air in the far part of the radiator, which prevents the radiator from filling hot water. Therefore, it needs to be removed somehow. For this purpose, a Mayevsky crane is used, the operating principle of which is based on bleeding air jams when the shut-off cone valve is loosened.
The Mayevsky tap is installed at the top point of the heating radiator. It can be controlled automatically or manually. When the valve is opened just half a turn, the air in the system comes out of it, freeing up space for the coolant. This device is used on all types of radiators, including old ones.
Air locks inside the heating system inevitably appear in the following cases:
The classic Mayevsky tap is made of brass alloys that are resistant to corrosion. It is a housing containing a cone needle valve inside. Controlled this valve Mayevsky with a locking screw adjustable from the outside. Being in closed position, the valve is able to reliably hold the coolant inside the radiator. When the screw is turned to the side, the passage hole of the faucet opens, releasing the air inside the heating device.
Outside metal case there is often a white plastic casing, giving the faucet a more noble and modern look. The design of the product may differ in its individual modifications, but the principle of operation of the Mayevsky crane always remains unchanged. Devices differ in diameters external thread , thanks to which you can easily select suitable option for any radiator. There are taps with 1 inch, ¾ or ½ inch threads.
To control the adjusting screw, use a key for a Mayevsky tap or a regular screwdriver. A square wrench is convenient because it takes up little space, allowing you to control the adjusting screw even if the radiator is in a hard-to-reach place.
In some cases, the operation of the crane can be controlled without the use of tools at all. To do this, just turn the valve by hand, ensuring that the air begins to bleed.
There are three types of air vents, differing in operating principle and design:
1. Mayevsky manual crane. This is the simplest device that is controlled manually. If uneven heating of the radiator is detected, the tap can be opened with a key or any screwdriver, and then, as air leaves the radiator, turn the tap in the opposite direction.
2. Automatic crane. The difference between an automatic crane is the absence of manual control of its operation. Its design and operating principle are somewhat different from the functioning of a manual crane. An automatic faucet is made of brass in the form of a cylinder, but there is no needle valve in its design. Instead, a plastic float is used. How does an automatically controlled Mayevsky crane work? A plastic float, depending on the presence of air in the system, moves inside the tap and controls the opening and closing of the valve. Everything happens without human intervention. 
The principle of operation of the Mayevsky automatic crane is visually demonstrated in the photo above.
All automatic cranes have the ability to be manually controlled, which can be used when the passage opening becomes clogged.
3. Crane with built-in safety device. For this type of Mayevsky crane, the principle of its operation is somewhat different from the usual bleeding of air. The safety valve is able to control the coolant pressure in the system. If the coolant pressure exceeds the limit value, reaching 15 atmospheres, the valve will operate and begin to forcibly bleed the coolant from the heating system. This prevents damage individual elements system in case .
It is especially important to install air vents with safety valves in heating systems made of polypropylene and metal-plastic pipes, which may not withstand increased pressure.
When choosing a device model, you should consider some features of radiators:
The installation of the tap must be carried out in the upper part of the radiator device on the side opposite to the flow of coolant, since it is in this place that air collects. The specifics of each system should be taken into account. If a vertical heating system is installed in the house, then Mayevsky taps are installed on the radiators of the upper floor. In addition, air vents are installed on all heating devices that are connected to the riser below the upper connection axis.
When using a horizontal system, cranes are mounted on all heating devices, on which their connection is possible.
If the Mayevsky tap is installed on a floor radiator located horizontally and parallel to the floor surface, then it is placed in the upper part of the highest point of the radiator. The adjusting screw points upward.
Many bathrooms have heated towel rails, which are heated by the coolant circulating inside them. On such devices a Mayevsky tap is installed for a heated towel rail. Installation has some features. If the heated towel rail has bottom connection, then there is already a place for it to screw in the tap. But for models having side connection, needs to be improved. A tee is cut into the supply pipe, into which the tap is screwed. The air outlet should be directed away from the wall. It is advisable to equip some models of heated towel rails with even two air vents.
1. Before installing the faucet, it is necessary to drain the water from the system.
2. Unscrew the plug located in the upper part of the radiator.
3. Screw the tap into place of the plug. The standard equipment of the faucet includes a rubber gasket that ensures the tightness of its installation. For a more reliable seal, it is recommended to screw FUM tape or oiled flax fibers onto the threads of the tap.
If a tap is being installed to the old one cast iron battery , which does not have a hole, then the following modification is performed. A hole is drilled in the cast iron plug, which has a slightly smaller diameter than the tap thread. The thread is cut inside the cast iron plug. After this, the air vent valve is fitted and screwed in.
Let's look at how to use the Mayevsky crane. To do this, it is advisable to place some kind of container under the battery and stock up on a dry cloth. Using a wrench or screwdriver, turn the locking screw counterclockwise a quarter or half a turn. Air will begin to hiss out of the system. When it comes out completely, water will flow from the tap. You must wait until the water starts flowing continuously. After this, the locking screw can be tightened.
If the air was successfully bled out, but the battery remained cold, then this is a sign of clogging. To clean a clogged battery, you will have to resort to the help of plumbers.
Tip: If the heating system includes pumps that carry out forced circulation coolant, they must be turned off 10 minutes before bleeding the air. When the pumps are turned on, air will not accumulate at the top point of the radiator, but will be carried throughout the system by the flow of water.
If the tap hole is clogged, it can be cleaned with a needle or other sharp object.
If the faucet has not been used for a long time, the rotation of the adjusting screw may be difficult due to the formation of corrosion on it. If this situation occurs, use WD-40 lubricant spray. Within a few minutes after applying it to the screw thread, it can be easily unscrewed. At the end of the heating season, it is advisable to lubricate the adjusting screw with silicone grease. In this case, the thread will not be destroyed by the influence of the coolant on it.
If you need to replace the Mayevsky tap, use two adjustable wrenches. Use one key to hold the cap on the radiator, and the other to unscrew the tap. If this is not done, then unscrewing the tap can weaken the plug and lead to loss of its tightness.
We looked at how to bleed air from the system using a Mayevsky valve yourself and how to operate an automatically controlled device. If provided necessary care this device, check and clean it in a timely manner, the device will serve for a long time without causing any problems to its owners.
The price of a Mayevsky crane depends on its type, material of manufacture, diameter, and starts from 30 rubles.
Before starting the heating system, it is important to properly prepare it. If a person lives in a city high-rise building, this problem It's unlikely to affect him. After all, housing office employees are responsible for carrying out such a procedure. But the owners of the private sector run the heat themselves. But even during the heating season, the batteries can heat poorly, and in some places they can even be cold. The system is probably congested.
In any case, you need to know how to bleed air from a heating radiator in order to avoid situations associated with ineffective operation of the equipment. Why an air lock occurs, its consequences for the operation of the heating device, what methods are available to remove it - you can learn about all this by reading the article.
If there is air in the battery, nothing good will come from it. Excess air is an obstacle to the normal functioning of the system. It can also cause corrosion on the walls of the radiator.
If installed in the circuit, an air lock may also disrupt its operation. When the system is functioning correctly, the plain bearings on the shaft of the pump unit are constantly in the water. And in the presence of air, a “dry friction” effect occurs, which negatively affects the sliding rings and can damage the shaft. Therefore, it is important to know how to remove air from your home heating system. Timely measures will help prevent damage to the heating network.
Before you bleed air from the heating system, you need to figure out why it forms in the circuit and how to understand that there is an air lock in the radiator. Most often, excess air accumulates as a result of improper filling of the system with water. The reason may also be the result of errors made during installation. Low pressure in the circuit, low-quality coolant with the presence of dissolved oxygen can also lead to airing.
An air lock can also occur under the following circumstances:
The following signs may indicate that excess air has accumulated in the system: hissing and gurgling sounds in the battery, the quality of heating decreases, heating becomes uneven, and the radiator may be cold in areas where there is air.
Such situations are not uncommon. Surely every owner of an apartment or private house has encountered a similar problem. Therefore, it is important to understand how to remove air from the heating system at home, especially since doing it yourself is not at all difficult. It should be noted that most often an air lock forms in batteries that are installed on the upper floors of the house.
Important! Sometimes the cause of a plug is a poor quality radiator.
In this case, no matter how much excess air is released, it will form again. And the reason lies in the fact that the material from which the battery is made promotes the formation of gases. There is only one way out of the situation - buy a new radiator. Therefore, it is better to immediately purchase heating devices from reputable manufacturers.
Before you bleed air from the heating system, you need to thoroughly understand the features of this procedure and prepare everything necessary tools and materials. Let's look at how to remove air from the heating system in more detail. For this work, you will need a special key with which you can open the air valve on the radiator.
A radiator wrench is best. It is sold at any hardware store. If installed modern battery, you can take a simple screwdriver. It is also necessary to prepare a container into which the coolant will be drained. And also have a couple of rags nearby in case of unexpected situations.
The algorithm for how to properly bleed air from the heating system is given below:
In addition to Mayevsky taps, automated air vents are often used for heating systems, which bleed off excess air on their own. Such automatic units are compact and reliable. But at the same time you need to be extremely careful. After all, the valve operates without supervision. And the slightest violation in the process can cause flooding of the attic or riser.
There are situations when craftsmen, when installing a heating system, do not install special valves to release excess air. Let's look at how to bleed air from a heating battery in this case. To work, you will need an adjustable or gas wrench. Use it to unscrew the plug. This needs to be done very slowly. Sometimes the plug won't come off. Most often this happens if. In this case, you need to apply a special lubricant to the threads and try again after some time.
When the plug is unscrewed, the same algorithm of actions is performed as with a regular tap. When the plug is screwed into place, you must remember to wrap either FUM tape or flax around the thread. This will avoid leaks and make the connection tight.
If air has accumulated in the heating system of a private house, the water will have to be drained using an expansion tank.
This container is always located at the highest point of the heating system. When the water is drained, you need to wait a little, and then turn off the tap expansion tank. Usually, when the battery temperature rises, the plug comes out on its own. If such actions are unsuccessful, then the water in the circuit should be brought to a boil. In this case, the plug will definitely come out.
Knowing how to bleed air from a heating system can prevent and solve many problems. But how often should such a procedure be carried out for preventive purposes? As a rule, this should be done at the beginning of the heating season. Twice is enough (the first time for checking, the second for control). Of course, if the system has defects or is faulty, then the number of descents may be greater.
If the apartment is installed, then before starting the system it is necessary to drain the water. This will help increase battery life significantly.
Of course, knowing how to vent a radiator is important and necessary. But it is better that airing of the system occurs as rarely as possible. It is better to prevent this situation and install an air vent.
At the moment, air collectors for heating systems can be of two types: manual (represented by the Mayevsky crane) and float-type (or automatic). Each of the above types can be installed in various places where there is a risk of air pockets. The configuration of the Mayevsky crane is traditional. Automotive air vents can have an angular or straight design.
In order not to rack your brains about how to ventilate the heating system, it is imperative to install an air vent on each radiator.
Manual air vents are usually mounted on the front side of the radiator. With their help you can easily bleed off excess air. It is enough to have only a special key. The performance of such devices is low. Therefore, such an air collector for the heating system is installed only for home use.
As for automatic air vents, they operate autonomously. There is no need to unscrew or open anything. The device does everything on its own. They are mounted strictly in a horizontal or vertical position. But it must be said that such a valve for bleeding air from the heating system has one drawback - high sensitivity to various types of contaminants. Therefore, you will need to additionally install a filter that will clean the device from mechanical contaminants.
Important! If air has formed in the heating system, you should find out the cause of this situation. Especially if such problems have not arisen before. It is important not just to remove the airlock, but to take all measures to prevent it from appearing again. Therefore, it is necessary to check the device for leaks. Perhaps somewhere the nuts should be changed or the bolts tightened, or the joints should be sealed better. Or perhaps the air vent is installed incorrectly or the automatic air separator for heating has failed.
To summarize, we can say that the problem of airing the system is quite urgent. It can occur in urban high-rise buildings and in private homes. There can be many factors behind the formation of excess air. It is very important to establish the true cause and know how to bleed air from the heating radiator correctly, so that in the future similar situations didn't happen.
An important role in the proper and efficient work Installation of special air vents also plays a role in radiators. By installing such a device, the owner of a house or apartment will be able to forget about the problem of air locks, save time and money, and also extend the service life of the entire heating system.
With the onset of cold weather, it is necessary to take care of starting the heating system. If you live in a normal apartment building, the HOA plumbers will do everything for you, but if you live in a private house, you will have to turn on the heat yourself.
Even if the launch is carried out by professionals, it may be accompanied by a number of problems. If you notice that the radiators are cold , This means that most likely an air lock has formed in the system. To eliminate such unpleasant consequences you need to know how to bleed air from the battery.
It is very easy to understand that air has accumulated in the system. If you hear strange gurgling and hissing sounds from your radiator, and its heating level is far from desired, then there is an air lock.
An air lock interferes with the proper functioning of the system and leads to corrosion of the radiator. If measures are not taken in time, there is a risk of damage to the entire heating system.
Where does the air lock come from? Most often this happens due to improper filling of the system with water, installation errors, low pressure in system, Bad quality the water itself, which contains dissolved oxygen.
Most often, air accumulates in radiators installed in apartments on top floors Houses.
In order to bleed air from the radiator, it is enough to perform a few simple operations. Let's start with the fact that today all radiators are equipped with special air vents. They come in the following types:
Let's tell you in more detail how to bleed air from a heating battery.
Most often, the problem of air formation in the system is familiar to owners aluminum radiators. To avoid problems in the future, it is necessary to immediately take care of the event when the launch begins, otherwise the batteries will not last long.
Removing air from the system is a fairly simple procedure that is very easy to handle. If you follow these tips, the problem will be solved.
We invite you to see what we talked about.
It is difficult to protect yourself from problems when starting a heating system, even in cases where the work was performed by specialists in this matter. One of the most common and no less unpleasant of them is an air lock. Why is it so unpleasant for us and our batteries, how and with what help can we fight it? Let's talk about this in our new article - air lock or how to bleed air from a heating radiator.
If the battery does not heat up properly and gurgles and hisses are heard from it, most likely oxygen has entered the system. The danger of an air lock is that it leads to corrosion and over time can damage the entire heating system. Air enters the system through various reasons, this may be an error during installation or filling the entire system with water, or it may be bad water that contains oxygen in the form of impurities or bubbles.
The result of such an air lock is a reduction in the service life of the radiator, and if used autonomous system heating - the shaft bearings break, followed by the pump, since the boiler has to distill air instead of water.
To release all the gas accumulated in the pipes and batteries, you will need a radiator key, with the help of which adjustments are made air valve, such keys are sold in all hardware stores and come different sizes for different batteries. In newer battery designs, the valve can be opened with a flathead screwdriver. If there is more than one radiator in your house, make sure that you can open the valve on each one; you must bleed air from all radiators installed in the house.
A similar operation must be performed with all batteries in the house, even if there are no problems with them. For prevention, all gases are usually released once a year and after repairs or any other changes to the heating.
Procedure: 
Also called a needle radiator valve, it is distinguished by its simplicity and durability, and is made of brass. The design involves a body and a conical screw. All parts fit tightly against each other and reliably hold water in the battery. When opened, air is released from a small hole on the side. Mayevsky's crane happens different designs and depending on this it can open differently.
Installation of such a crane does not require special professionalism. The main thing is to choose a faucet correct size. Before installation, you need to drain the water from your battery, and then unscrew the plug in the radiator cap. For greater reliability, you can wrap FUM tape around the thread.
The product can be purchased at a price of 30 rubles.
This device automatically removes all gases accumulated in the pipeline, and is therefore undoubtedly more convenient than the Mayevsky tap. Made from bronze and of stainless steel. It can be installed with a shut-off valve, which is needed to easily replace the air vent.
An automatic air vent is installed in the most high places heating system, since gas is lighter than liquid and rises to the top. Experts recommend installing a diverter behind the boiler, on the collectors and at the highest points where the pipes pass.
Prices for such equipment start at 300 rubles.
The operating principle of this device is based on separating gas from liquid and removes all microbubbles and oxygen dissolved in water from the system. The design uses special PALL rings, and all microscopic air bubbles are caught by their surface. 
In addition to catching bubbles, separators also catch dirt circulating in the system.
A separator is installed immediately after the boiler, since most of the oxygen is released from the water when heated and is best removed immediately.
Such equipment can be called advanced and the prices for it are correspondingly higher - from 10 thousand rubles.
Considered the most effective method removing air accumulated in pipes and radiators. It consists in combining several types of devices in one circuit. Typically looks like this:
Most the best option usually works out at a higher price than others and our case is no exception. The exact price is determined from a specific scheme.
If the temperature in your apartment or private house with a water heating system begins to drop, but the boiler is working normally, you need to check the system for air pockets and eliminate them. Thus, to always keep your home warm, it is important to know how to bleed air from a heating radiator.
In this article we will look at ways to remove air locks from a battery, and also look at how to properly bleed air from the heating system.
Air may enter the heating system when repair work, through the slightest leaks in the connections, and can also remain during the initial filling of the system with coolant. Trapped air accumulates in places where pipelines are kinked, as well as in heating radiators, forming plugs that prevent normal coolant circulation.
Extraneous noise, gurgling, and uneven heating of the battery indicate that air has entered the system and needs to be removed.
To prevent airing of an individual heating system, automatic air vents are used, which are installed in places where air may accumulate. Structurally, an automatic air vent consists of a housing in which there is a float pivotally connected to a needle valve. Caught in heating system air accumulates in the air vent body, the float lowers and opens the needle valve through which the air comes out.
In large individual heating systems, it is advisable to use air separators. Passing through them, the air bubbles in the coolant are separated and released through the air vent.
On modern heating radiators, Mayevsky taps are installed - this is a manual needle valve that allows you to manually remove air from the battery. For example, using a Mayevsky tap it is easy to bleed air from a Rifar heating radiator.
If the Mayevsky valve is not installed, then to bleed the air it is necessary to unscrew the top plug at the end of the battery. This must be done carefully and do not unscrew the plug completely; often it is enough to loosen it and turn it by 2-3 threads.
If you have old ones installed cast iron radiators, and you live in an apartment with centralized heating, then the best solution will contact the organization that services your home.
All Rifar radiators are equipped with Mayevsky taps, which allows you to promptly and quickly remove air from the battery. To do this, use a flat-head screwdriver or a special key to slightly turn the tap counterclockwise.
The air will begin to hiss out. As soon as a stream of water flows without air bubbles, the tap must be closed. This way you will get rid of the air lock in the radiator in a minute. After a few hours, the procedure can be repeated to ensure that all air has been removed from the battery.
As you understand, the question of how to bleed air from a Rifar heating radiator can be solved very simply if you have an installed Mayevsky tap.
All modern systems heating systems provide for the installation of taps in front of the batteries at the inlet and outlet, which allows you to replace the battery without completely draining the coolant from the system. After installing a new radiator, it is necessary to open the shut-off valves on the pipelines so that the battery is filled with coolant slowly. It is also necessary to slightly open the Mayevsky tap. This way you can bleed the air from the new radiator.
After carrying out repair work related to draining the coolant, and during the initial filling of the heating system, it is necessary to perform one important rule. Filling the system is done slowly, this will help to avoid the appearance of air pockets in the highest places of pipelines and in heating radiators. But still some amount of air will remain in the radiators. How to properly bleed air from a heating system? The work is performed in 5 steps:
To avoid spontaneous airing of the heating system, it is necessary to ensure the tightness of the connections. Air can be sucked in through the slightest leaks, which will gradually lead to the formation of new air pockets.
Now you know how to properly bleed air from the heating system, and you can always do this work yourself.
