What is used air valve in the heating system

21-09-2018
Water supply

Even if the temperature of the coolant entering the apartment from the central boiler room is normal, the room will not warm up due to the air-conditioned radiators. An air faucet for radiators or a radiator needle air valve, often called the “Mayevsky faucet”, will help solve this problem. This part of the heating system allows you to quickly solve a complex problem.

In the photo - one of the options of the crane Mayevsky

About the invention

The invention appeared almost 80 years ago and, both then and today, was intended for the production of air traffic jams accumulated in central heating radiators. This must be done, otherwise the battery will simply not be filled with hot water, which will reduce its rated power.

Tip: install the air vent valve from Mayevsky to the heated towel rail, where it will also discharge the accumulated air.

Devices of this type can be of different designs and modifications, however, the principle of their work is the same - the tapered rod is fully capable of closing the through-hole after it has been screwed in. For the manufacture of air vent using steel or brass, as these materials withstand a liquid medium, its price is small.

The main difference between taps is the diameter of the external thread, which can be 1/2, 3/4 or very small, which were previously used for cast-iron radiators, and now for “chords” or floor-standing batteries.

Air valves for radiators with a diameter of 25 mm with internal thread

How the device works

The valve consists of a cone-shaped screw, which is screwed into the housing. You can adjust the release of the airlock with a screwdriver, a wrench, or both, in the extreme case, even with pliers. The device has an ordinary pipe thread, so it is enough just to turn the screw half a turn so that the accumulated air in the radiator begins to bleed.

Causes of battery airing can be:

  • low flow rate;
  • insufficient water in the system.

After the tap is opened, the characteristic sound of the air outlet is usually heard, after which the water begins to flow with it. As soon as the last goes evenly, you can close the valve.

Tip: you can do this work yourself, there is nothing difficult in it, you just don’t have to open the tap abruptly, better do it gradually, and bring some empty container (for example, a glass jar) to it.

Ball valve with brass air vent

Device mounting

Why is it necessary to install an air vent and how to do it:

  1. Because of the one-pipe heating system, which often houses apartment buildings, there is a disturbance in the normal circulation of the coolant. Because of what is the accumulation of air masses in the radiators. Emerging air plugs can completely paralyze the circulation of hot water in the system, as well as contribute to the occurrence of metal corrosion.
  2. The device must be installed in places that are often amenable to airing. Threaded valve tap is easily adjustable with your own hands.
  3. Installation is carried out without the help of specialists. You need to unscrew the side cap on the battery and screw the device in its place.
Ball valve with drainage and air vent Valtec

Equipment operation

The battery does not warm up normally
  1. Free up space near the radiator so as not to spoil valuables during recovery.
  2. Prepare a screwdriver (wrench) and a basin for water.
  3. Install a screwdriver in a special thread placed on the device, and begin to slowly rotate it counterclockwise.
  4. Stop spinning as soon as you hear the sound of outgoing air.
  5. Wait until all the excess air comes out. The sound can be quite loud, but this is quite normal.
  6. Close the valve gently in a clockwise direction, as soon as water starts to flow evenly along with the air.
I can not warm up the radiator If you did everything as instructed, and the battery remained cold, there is a high probability that it is clogged. It will help in this case, its cleaning in different ways or replacement.
Recommendations of specialists
  1. Install the Mayevsky valve directly on the heater.
  2. A screwdriver is sufficient for maintenance. If the device is placed in a poorly accessible place or niche, a special key may be required.
  3. It is not allowed to smoke or place sources of open fire nearby. Combustible gases, which can ignite, often come out with air.
  4. Do not constantly hold the device in the open position, otherwise the radiator may deteriorate.
  5. Before unscrewing a faucet that has not been used for a long time and could rust, lubricate the threads with kerosene and allow it to soak it completely.

Tip: wait for the air to completely leave the radiator, even if it comes out with water for a long time.

Special key for Mayevsky's crane

Device advantages

  1. Replace the Mayevsky's crane can and ball valve with an air vent, but in appearance they can not compete with him.
  2. The use of a device for discharging air from a battery makes it impossible for the lower floors to be flooded.
  3. Unlike automatic air vent valves, Mayevsky's taps are not clogged due to the poor quality of the coolant and can perform their task at any time.
  4. Reliability and ease of use of the device. Install it on any type of radiator helps sealing rubber ring around the thread. It is enough to make several turns of the screw in order to solve the problem of system airing and to increase the circulation efficiency of the coolant.
Technical characteristics of the air crane Mayevsky simple
  1. The device allows you to quickly remove the accumulated air masses from the heating system of the entire building or a separate riser.
  2. The use of a Mayevsky crane makes it possible to significantly save on heating, prevents the batteries from cooling due to the accumulation of air, making the heating of the room even and continuous.

Conclusion

The use of devices for the release of accumulated air in the heating system allows you to adjust the correct heating of the heaters in the house. The construction of the crane Mayevsky is simple and does not require special skills for its installation and operation. Installation is made independently on any type of radiators. The video in this article will provide an opportunity to find additional information on the above topic.

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