Why install a crane mayevsky in heating systems
Accumulation of air in the heating system is one of the most common causes of disruption of its work, because the coolant stops circulating normally. As a result, the radiator cannot perform its main function and the heating efficiency decreases. Solve the problem will help a special device - air vent, which allows you to quickly razvozdushit system. Today we will look at how a Mayevsky manual and automatic crane can be, how to install and operate it.
History tour
The device was invented more than 80 years ago, and, despite the simplicity of its design, still allows you to easily remove the accumulated air from the heating circuit. We will explain to you what a Mayevsky crane is and how it helps engineering communications.
Device
In the folk environment, this vent valve is called the Mayevsky crane. So it is offered in all hardware stores, and buyers understand what is at stake. At the same time, the crane Mayevsky according to GOST belongs to the category of valves and is called a needle-type radiator air valve.
Currently offered several designs of this device. Thus, you can choose the most convenient option, given the place of its installation.
A standard design is a product consisting of two parts:
- enclosures;
- screw conical shape.
The parts are tightly interconnected due to calibration, so the valve in the closed state can reliably hold the coolant. On the side of the case there is a hole designed to bleed air.
Characteristics and installation
| Material | Traditionally, the product is made of brass, which does not rust and guarantees its long use. |
| How to reset the air | Air with its help can be released from the system:
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| additional information | If the heating system:
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Tip: for a heated towel rail when using lateral connection in the bathroom, use a tee. It is mounted in a vertical position, and the valve opening must face away from the wall.
Installation of products on radiators and similar equipment is necessarily necessary when there are areas in the heating system located below the upper axis of connection of the device. In this position it is impossible to remove the air naturally.
Tip: be sure to release the system immediately after installation.
We recommend holding this event when the heating is turned on after the summer. Later, local problems may occur due to the suction of air bubbles from the coolant into the system during its operation.
Air can accumulate due to the release of hydrogen due to the corrosion of metallic elements of communication. For example, if aluminum radiators of heating inside were not treated with a specific coating, they constantly release this element into the coolant when they react with it in a chemical reaction.
How to spend a hand manually
The instruction is as follows:
- Prepare a water tank.
- Turn the air vent with a special key, screwdriver or hand counterclockwise. It is enough to make one turn to hear how the accumulated air with a hiss will begin to leave the system. If it has accumulated a lot, you can turn the valve half a turn still.
- Wait until it starts to drip from the hole, and after a while the water will flow out, and the air will stop completely.
- Close the tap as tightly as possible.
Tip: turn off the heating pumps a few minutes before the air is vented. Otherwise, you will not be able to remove the airlock, as it does not have time to accumulate at the top of the radiator.
Usually manual air vent is not used on major highways, where air traffic jams occur constantly. In this case, other gas discharge structures are used.
Automatic air vent
Although the device of the Mayevsky manual type crane is nowhere simpler and it will not be difficult to operate with it, even among people who have never serviced heating systems, it is not recommended to install it in areas that are constantly airborne.
In this case, it is better to put an automatic device for the removal of excess air. Usually this problem occurs when the installation of the pipeline was carried out with violations.
A device with an automatic air discharge function does not require regular intervention in its operation. Such a device is very convenient for hard-to-reach places.
Such air vent can be of different designs, however, the principle of operation of the automatic Mayevsky crane is the same for all, the following happens successively:
- in the case there is a hollow compartment with a plastic float;
- the float presses on the stem with a spring flag;
- access to the atmosphere;
- accumulated air comes out;
- heat carrier enters the cavity;
- the float presses on the rod;
- the hole closes;
- water outlet blocked.
Tip: equip your device with a shut-off valve, then it will be more convenient for you to repair it.
First screw it into the heating system, and then the air vent. The crane will click on the flag in the valve, preventing the coolant from escaping.
Automatic air vents are presented in retail networks in a large assortment.
They are released:
- radiator;
- special;
- corner;
- straight.
You can easily find the necessary element for the heating system. Their price is above the manual type.
Installation and maintenance
Installation of this type of air vent does not require experience or qualifications. It is only necessary to choose the right size. Their thread may be 1, 3, 4, 1/2.
Install taps at the top of the battery, on the side, against the inlet of the coolant. Before these water from the heating system must be drained, unscrew the plug from the radiator plug and instead install a faucet.
Tip: when installing we recommend using an additional seal for the thread - fum-tape or tow.
For the central heating system of residential buildings:
- It is not recommended to use automatic air blowers, they will often get clogged due to contaminants in the coolant. In apartment buildings, the heating is often turned off, so air traffic jams will often appear here;
- use special devices of the marks МС-140 or ОМЕС, technical characteristics of the Mayevsky crane of this type can cope with hydraulic shocks up to 15 bar.
If the device is clogged after a certain period, you can clean it with an ordinary needle or pin. When replacing the faucet, be sure to hold the radiator cap with a gas wrench so that it does not unscrew.
Conclusion
Today you learned about such a wonderful device as the air vent. Examples were given - what the device is for and where it is used. Since its dimensions are different, you will only have to choose the suitable, for example, Mayevsky crane of 3 to 8 inches, for half an inch or another option. Installation of the device does not cause problems, large financial expenses, forces and time and effort.
With the help of such a device can seriously increase the efficiency of heating. The video in this article will provide an opportunity to find additional information on the above topic.