Air bleed valve std 7073v photo

The appearance of an air lock

A cold battery is one of the signs that the heating system is clogged with an air lock.

gurgling sounds are sometimes heard in pipes and radiators;
the batteries either do not heat up at all or only heat up to half;
Some rooms are hot, but the heat does not penetrate into others.

This means that accumulated air is to blame, and how to remove it from the heating system must be decided in accordance with where exactly it has accumulated. Air bubbles always accumulate in the upper part of the heating system, so radiators in rooms on the top floor most often cool down. To find the location of the air lock, you need to sequentially feel the supply pipe and all the batteries, checking the degree of their heating

It is also advised to tap the pipes with a hammer and determine by sound where the void has arisen, but this must be done carefully so as not to damage the paint layer on the pipes

As a result, having found the problem area, you can already choose a method for bleeding air from the heating radiator or, if necessary, from the pipeline.

An air lock not only prevents the circulation of the coolant, but also provokes corrosion of metal pipes. The presence of air in the system also negatively affects the operation of the circulation pump.

Where does air come from in the system?

The reasons for the formation of an air lock can be either natural or related to improper system design and poor-quality installation.

Naturally occurring reasons:

when the coolant is heated, air dissolved in the liquid is released, it rises to the top and forms a plug;
gas bubbles appear during the interaction of a hot coolant with certain types of metals (in particular, aluminum);
due to evaporation, the liquid level in the open expansion tank decreases below a critical value;
the air does not have time to completely escape from the pipes and batteries when the complex configuration of the system is filled too quickly with water.

It is important to know how to drain the heating system if necessary and then fill it again, so that no air is left in the pipes and radiators

When installing the radiator, you need to control its slope angle

In addition to natural causes, air locks also result from:

incorrect layout of horizontal pipes and installation of radiators;
pressure drops in the feed water supply;
poorly sealed connections;
deterioration of old pipelines;
expansion tank malfunction.

When during operation of the heating system it turns out that it was originally designed incorrectly, it will have to be redone. But in order to urgently restore the heat supply, you need to decide how to bleed air from the heating system.

Brass air and water drain valves

Pipeline fittings are a large group of devices without which communications cannot function. Therefore, it is not surprising that people are interested in the choice and installation of valves and taps for air bleed std 7073v in brass. Not only plumbers and specialists in supplying heat to the house, but also direct users of the equipment are directly involved with these details.

The coolant, circulating in the pipeline, releases air bubbles. Merging, they create impressive traffic jams in the areas located above. The continuous flow of liquid slows down and stops. The second reason for airing is downtime/heating shutdown. This is where the Mayevsky crane comes in handy, whose role is to remove air barriers, clearing the way for water flow.

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Air valves and radiator fittings

Almost all modern radiators provide the possibility of installing Mayevsky manual valves for air discharge. Some manufacturers even complete their products with them. If desired, instead of a manual air vent, you can install an automatic one, but in practice it does not look very presentable.

Recently, laying heating lines below floor level and using radiators with bottom connections has become increasingly popular. Then there remains a small gap between the battery and the floor, where it is not always possible to place any fittings. For this case, there is a special connection headset with built-in taps, shown in the picture (left):

On the right is a headset for the bottom connection of a conventional radiator with side plugs; it also has valves plus the ability to connect a thermal head. Such solutions look very aesthetically pleasing, but will require maximum financial costs. More information about the headset is shown in the video:

Installation of ball valves on batteries

A conventional ball valve is designed only to switch to 2 positions: “open” and “closed”. It cannot be used to regulate the flow of coolant through the radiator, only shut it off. The figure below shows a simple connection diagram for a heating device with this type of fittings:

The proposed scheme is the best option for an unregulated connection of a radiator to the central heating risers in an apartment. You won’t have to balance it anyway, and installing a thermostatic valve is pointless due to the poor quality of the coolant. Instead of a ball valve at the outlet, it is also practiced to install a so-called shut-off valve; its difference is only in appearance.

Depending on the layout of appliances and heating pipes, you can choose an angle valve for a radiator with or without a decorative coating

Also, when choosing a product, it is recommended to pay attention to the operating pressure indicated on the product body or in its passport. It must correspond to the pressure in the heating network of the apartment building

Advice. For installation on the radiator, choose good taps made of thick-walled brass and a connection with an American union nut. It will allow you to quickly disconnect the connections without rotating the elements. On a single-pipe riser, do not forget to install the bypass with a slight offset away from the main pipe.

Water taps ↑

The classification of water tap pipes is based on several criteria. Design plus function are the most significant aspects for dividing cranes into:

simple single-valve (with 180-degree rotation or half-turn);
two-valve (mixing hot and cold jets with output through a common gander);
single-lever mixers with a rotating handle (ball and cartridge);
faucets with a thermoelement (usually touch-sensitive, two-handed, with a temperature scale).

Another basis for systematization is the material of the body and components. Brass-steel-plastic is a familiar line of plumbing kits. Polymer options are fragile and cannot be repaired. But brass taps for water supply do not wear out quickly, and their parts can be replaced. Such household paraphernalia looks decent, although it costs noticeably more.

The list of advantages of products made from yellow copper-zinc alloy includes the reliability of their valves, resistance to corrosion, the ability to withstand powerful pressure and resist mechanical stress (pressure, shock). Repair specialists advise purchasing just such samples. Repairing them is quite within the capabilities of a man who does not know the intricacies of plumbing.

For connoisseurs of artistic creativity who want to equip their apartments with antique-style accessories, there is always the opportunity to choose a decorative brass faucet in the form of a satyr mask, the head of a predator. A bathroom, cottage porch or garden patio can also be decorated with a metal washbasin with elements that support the style of the home.

The unity of quality and aesthetics is always in fashion – in the plumbing sector too.

Source: Stroy-Aqua.com

Shut-off systems play an important function in any pipeline. Previously, simple valves were installed everywhere, but now ball valves are of great advantage. Ball valves for water have proven themselves at the highest level. These designs are of good quality and highly reliable and are used both in everyday life and in industrial pipeline systems. For example, in everyday life such taps are installed when connecting washing machines and dishwashers to the water supply system. The operation of such a crane is based on a metal ball. A ball valve is used to completely shut off or completely supply water.

It is impossible to regulate the flow of water with such a faucet.
The taps come in different sizes; which one is right for you depends on the size of the pipe. For tasks and questions related to the Mayevsky std 7073v crane, you can get advice from our company’s specialists by sending a letter by email, or in the feedback form on the site, also by dialing the phone numbers indicated on the site. There are several types of ball valves. Coupling. Such a faucet is usually small in size and is installed on a pipe with a diameter of no more than 45 mm. Flange type. This ball valve is suitable for pipes with a diameter of more than 45mm. When installing it, special gaskets are used to increase strength and tightness. If you need to know the Mayevsky std 7073v crane , then write to us by email on the website, or in the feedback form, or by dialing the phone number indicated on the website.
Piece. Used in industrial sectors. Such a crane can be dismantled and reinstalled many times. Welded. Installed by welding. Dismantling such a crane is not possible. Shore taps for water are very comfortable to use. They have high strength, tightness and are accurate in size. The convenience of using ball valves lies in the fact that when opening or closing, you do not need to turn the valve for a long time, but simply turn the handle 90 degrees. The ball valve for water has good resistance to corrosion, and can be easily dismantled if necessary. But in order for the ball valve to really serve for a long time and well, choose it carefully. When purchasing a ball valve for water, ask the seller for a certificate of performance and an annotation. Each tap must be marked. There should be no cracks or sagging on its body. Branded taps have all walls of the same thickness. Source: scepio.ru

Using valves with thermal heads

These are the best taps that can be installed on radiators in the heating system of a private home. Tuned to a certain air temperature, the thermal head acts on the valve stem, forcing it to open or close its flow area. In this way, automatic quantitative regulation of the coolant passing through the heating device occurs.

The thermostatic valve is installed on the supply line to the battery, and a balancing valve is installed on the return line. It is a mistake to assume that the system will be automatically balanced by thermal heads; valves are needed in any case. Installation of conventional ball valves instead of them is allowed for centralized heating or in systems with associated coolant movement (Tichelman loop). But it is unacceptable to regulate the coolant flow using a ball valve, and it will not work.

Advice. Most models of thermal valves have a mechanical blocking mode for the flow area. If you received products without such a mode, then to service the battery you will have to install an additional cut-off device, as shown in the diagram:

How to install a Mayevsky crane

The tap is installed on the top of the battery on the opposite side of the coolant flow because this is the place where air accumulates. It is also worth keeping in mind the subtleties of various systems.

Note: With a vertical heating system, the taps should be installed on the radiators of the upper floors. Also, they must be installed on all heating elements supplied to the riser below the connection axis. And with a horizontal system, taps are mounted on all radiators without exception.

If the Mayevsky tap is installed on a radiator standing on the floor, it must be placed at the highest point of the radiator. The adjusting screw points upward.

As a rule, the bathroom has a heated towel rail, which is heated by the circulating coolant inside. A Mayevsky tap for a heated towel rail is installed here.

The absence of this valve in such a system can lead to air pockets that stop the circulation of both the heating circuit and the hot water supply circuit. Therefore, the presence of this tap on heated towel rails will eliminate this problem.

When installing the Mayevsky tap for a heated towel rail, it must be positioned strictly vertically, using a special tee. The tee will allow you to move the working vertical axis to a horizontal position. This provision fulfills the requirements prescribed by the instructions. Namely, that the hole for bleeding air should be directed in the opposite direction from the wall and be sloping downwards. Immediately after completing the installation work of the heating system, it is necessary to carry out de-airing . Because during operation, air in any case enters the radiators. Also, this event must be carried out including the system after the summer period. After all, air can also accumulate due to the release of hydrogen during corrosion processes of a metal element. In aluminum radiators without a special coating, this element is constantly released inside and a chemical reaction occurs with the coolant.