1 4 inches automatic air vent. Airway automatic for heating

Content

1. Air in the heating system - why is it bad?
2. Device and principle of operation of the automatic air vent
3. Types and labeling, popular models
4. Installation in the heating system

Introduction

The presence of air in the heating system is extremely undesirable. However, he's somehow falls there. It is very adversely affecting the quality of the heating system as a whole and reduces the service life of its individual nodes. In order to remove the accumulated air and need an automatic air vent.

In this article we will tell in detail about this device, the principle of its work, the peculiarities of marking and popular models, as well as how to properly install it in the heating system.

Air in the heating system - why is it bad?

It would seem that the closed heating system, fully filled with the coolant, where does the air in it? Ways to appear inside several, among them you can select several basic:

• In the process of filling the heat carrier

  While you fill in the heating system with water or other coolant, it is mixed with air. It is almost impossible to avoid it, so you have to take it as proper.

• Through low-quality compounds

  Bad installation of the heating system, or another heating device, low quality, marriage or breakage of shut-off reinforcement or other elements - all this leads to air penetration inside.

• Chemical reactions

  In addition to air inside, other gases can accumulate. For example, if you use a coolant with high acidity and aluminum radiators, hydrogen will be highlighted as a result of a chemical reaction.

Photo 1: Automatic aircraft for heating systems

As you can see, the reasons for this phenomenon mass. But what is so bad? The first thing to which it leads is cavitation. It significantly accelerates equipment wear and leads to noise when it works. The second reason is corrosion. It destroys the elements of the heating system, and there will be part of their particles with a flow of coolant for other devices, clogging and interfering with their normal functioning. Thirdly, the presence of air reduces the actual heat transfer of heating devices and leads to a violation of the operation of the pumps. It can even cause the burst of the heating boiler housing.

To eliminate all these problems, an automatic air vent. Let's figure it out how it works in the heating system and from which nodes is.

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Device and principle of operation of the automatic air vent

The design of this small device is very simple. Inside the brass body is a polypropylene float that is connected by a rocker with a spool. As the case is filled with air, the float is lowered down and opens the exhaust valve. The released space is filled with water and the rising float closes the spool. In order to avoid different dust garbage and dirt inside the spool, its outlet is closed with a plastic cap.

Photo 2: Construction of automatic float type air vent

There are models with a slightly different implementation of this process, but in general, it is always the same: when the float is lower, the valve is open and produces air if it is raised - the spool overlaps and the device replaces gas again. This cycle is repeated again and again in automatic mode.

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Types and labeling, popular models

There are several types of automatic air vent. All of them are divided into two large types: automatic and.

Depending on the diameter of the threaded connection, they are two types: 1/2 and 3/4 inches. The first is more famous for Russian labeling as an automatic air vent Du 15, the second - Du 20.

According to the method of attachment, they are divided into classic straight and side. At the second type aircraft, the threaded connection is rotated 90 degrees. Air release valve can also be on top or side. Various modifications are issued by the manufacturer to facilitate the installation of them in the complex places of the heating system or for installation on the side of the radiators.

Photo 3: Automatic air vent Du15 "Valtec" VT 502 with an exfigging valve

Two manufacturers are most famous in the domestic market: "Valtec" and "Danfoss". Valtec company supplies automatic air vent VT.502 with a 1/2 mounting diameter (DU15). The model has proven itself well and is very popular with installers of autonomous heating systems in private homes. It has a brass body coated with a nickel layer, which is designed for the maximum pressure of 10 bar and a temperature of 110 ° C. The average price at which you can currently buy this model is 280 rubles.

Photo 4: Automatic air vent 1/2 "Danfoss" series "Eagle" and "Wind"

The second place is occupied by the company "Danfoss". It produces automatic air vents two series "Eagle" and "Wind". With common specifications, they are only a bit different external species. The models are made in brass enclosures and are designed for the limit pressure of 10 bar and a temperature of 120 ° C. In addition to the standard Mounting thread DU15 (1/2), "Danfoss" also produces automatic air vent from fastening 3/8 (DU10). Prices for these devices also lie within 300 rubles.

Air traffic jams in pipes and radiators are a characteristic problem of heating systems. Everyone who lives in homes with a similar type of heating are familiar with such problems. If in open system The air outlet is not limited to anything, then in a closed highway, in particular, centralized, free from gas, the heating devices can be obtained using special devices - air vent

Characteristics of airlows

The technical features of the device are conveniently present in the table.

These parameters must be selected based on the type of network. For individual heating, the choice is unlimited, for centralized Systems It is necessary to figure out the pressure and temperature of your home in the HWU.

The cost of the air discharge device depends on the model, manufacturer, material, connections (1/2 inches - by 10-15% more expensive). The budget option can be purchased for $ 5, the most expensive - $ 15.

It is worth spending time to choose a supplier: In one store, the automatic air vent for Danfoss DU 15 is offered for $ 7.63, in another the same model - for $ 11.5.

When buying brand devices of famous brands (Danfoss, Wind, Valtec), beware of fakes. Spacing the shut-off valve - from $ 1.1 to $ 1.8.

Prices for automatic air vent

Catalog of prices for automatic air vent

Most popular models

At the moment, air vent from companies "Valtec" and "Danfoss" are popular. Each device is characterized by certain qualities, advantages and features of application.

Device	Characteristics	Price
"Valtec" - VT.502	The diameter of the fastening?, That is, Du 15. The model is used in private houses, that is, in autonomous systems. Nickel coated brass housing. The device is designed for pressure 10 bar and operation at 110 degrees mode.	280-300 rubles
"Danfoss"	Made of high-quality brass. Devices are designed to work with a maximum pressure of 10 bar. They maintain a temperature of 120 degrees. There are models of DU 15 and DU 10.	300-350 rubles
"Airvent"	Device category DU15. The air vent is designed to effectively drive accumulated gases from the pipeline, as well as from air collectors, which are equipped with internal systems of heating systems of buildings and heat supply kits.	484 rubles

Types of air vent in the heating system

According to the principle of operation distinguish ball and needle automatic devices, Performance - direct, corner and radiator. Despite the different areas of use, the principle of operation of all airlows one.

Specially popularity of special methods of the float plan are very popular. This is an automatic air vent, which provides lateral air emissions. The device operates at a working pressure of 10 bar, and the maximum permissible temperature equal to 110 degrees. The device can work not only with water, but also with different glycolic solutions at a concentration of up to 25%, and the connection thread is 1/2.

All modern automatic air vents are divided into several species that differ in total. In total, three main types of similar devices differ:

• Corner;
• Straight;
• Radiator.

Important! Regardless of certain external differences and diverse applications, general principle The actions of such devices are the same.

Direct air binding

The most common is the first type with a straight pipe. It is indispensable in the highest points of the system, where in all the laws of physics accumulates maximum amount Gas, and manual reset of air in such places is often difficult.

Which is constantly under pressure, is provided by a boiler security. Its usually placed on the supply pipe, which comes out of the heat generator. In addition to the pressure gauge and the safety valve, the automatic air vent for heating, whipping air when filling the tank with liquid. If the unit is mounted correctly, then it can be separated from the system at any time and free to maintain with a gas trap. For boilers working on solid fuels, the security group is required.

You can meet the air drop and c. His task is to create conditions for uninterrupted water supply. The problem is that the patching unit can only work with an incompressible medium. Air penetration on the impeller impeller threatens its full stop. Active circulation of fluid and controls the gas supply.

Important! The absence of air vents in heating can lead to the fact that the air discharge will have to be done manually, which is quite difficult

Corner air

If the place is too unavailable to install a simple valve (for example, the pipe is located horizontally), use the corner version of the valve. Its pipe, deployed at 90, can be connected to the horizontal part. It is worth noting that the angular modification with the outer thread besides the expanded nozzle from its analogues is practically no different, so these species are completely interchangeable.

Radiator automatic air vent

Sometimes on radiators instead of the traditional automatic corner valve. It is only a bit of a little more than its analogue, a little more expensive (about $ 2), but the daily participation of a person does not require. Such a choice is justified if the gases in the battery accumulate regularly due to the chemical reaction of the aluminum alloy, from which the section and hot water is made.

Although such cases are issued special automatic device With a diameter, like a tube for a radiator (see photo). The device is designed specifically for aluminum and partially bimetallic radiators, has a suitable connection type.

For cast iron batteries and the system of old type, the crane of the Maevsky and drain pipe is more suitable.

Corner and Modern Radiator Air Sweets

In a wide variety of apartment heating systems, situations may be formed when it is urgent to remove the formed plugs from the most remote and hard-to-reach areas. In certain situations, a simple design of the valve is mounted difficult or impossible, the pipe with the cracked thread is located strictly horizontally. In such cases, a special corner is ideal. Such an element, as the nozzle comes from the bottom, and then turns at right angles, because it is ideal for attaching to horizontal sites.

Important! The angular air vents, equipped with an outer threaded connection from standard models, are practically no different, there is only rotated nozzle. It is for this reason that the angular can be used instead of direct

Very often for automatic booming of air traffic jams from heating systems Instead of a conventional crane, experts produce installation of an angular valve. It is ideal especially if gases are always formed in the heating network and it happens in the radiator part. The basis for this is the usual chemical reaction of various substances, which are in some types of water, and aluminum batteries and at a sufficiently high temperature. All valves, equipped with an angular shape with nozzles to mount, as there is already a special automatic water weep.

Radiator devices are initially designed to be mounted for batteries that have specifically for this threaded connections. Instead of hand valves for bimetallic radiators and aluminum, i.e., where there is a certain contact with water. Here the installation of the radiator air vent is mandatory. In all other cases, such a device is placed strictly at will, which arises from many, as it provides convenience in the process of use.

Important! Standard Cast iron made radiators that are connected to standard centralized heating systems. In these cases, the equipment is better equipped with an ordinary manual crane and must necessarily combine all this with a drain pipe

Component supplements for automatic air vent

Complete maintenance for sale and complete devices. Automatic aircraft with valve is a threaded adapter with a springing petal valve. It is screwed in front of the gas feed, so that when the network has the ability to serve it. Such adapters are equipped with the Valtek, Danfoss models and other authoritative brands.

Understand the features of each type of drainage will help this video:

Where the air vents are mounted

In the closed system, when installing a device for efficient gas removal, certain rules must be followed:

• Pipes are packed so that the vectors of the movement of water and air coincide, and the hot liquid was sent from the main riser to remote.
• The air collector should be mounted at the highest point, for example, when around the door opening from above, as the air from the liquid is released at a low water velocity.
• Air removal devices should stand in areas where gases are guaranteed: on the turns of the risers, in the transition places of the pipe to another section size, on all batteries, separators, combs.

IN obligatory The air vents are mounted on aluminum radiators, which, when contact with the coolant, hydrogen is isolated. For partially bimetallic batteries, the problem is not as relevant, but there are aluminum in their composition, and it means that gas will have to do, although not so often. In 100% of bimetallic aluminum models, there are no aluminum, but the manufacturers are persistently recommended to exploit them together with the air booming devices.

From steel panel batteries due to their special design, the air shutter valve is installed in the factory conditions.

On traditional cast iron batteries and pipes, modern air vents are not effective. Gas booming in such structures is possible only with a part of the coolant, so the standard and ball variants of the cranes are used. The opinion of a specialist about where and how it is advisable to install airlighteople, on this video:

Prerequisites and consequences of the formation of air traffic jams

In heating systems, crude water saturated with air is most often used in the role of the coolant. When heating, oxygen is allocated, gradually accumulating microbubbles create a serious tube blocking free circulation of water.

If, when filling the system, the liquid is fed too quickly, the gases do not have time to go out. It is necessary to fill the design gradually: one floor of a branched system requires at least 1 hour to fill.

If water leak is observed in the system, separate connections Also insufficiently tightly, air will act in the heating network. It is possible to penetrate and in the process of repairing pipes.

Sealedness depends on the type of material: the walls of polymer pipes without an antidiffusion layer permeable for oxygen. Some metals (such as aluminum) react contributing to the release of gases from the coolant.

The cause of the accumulation of gas microbubbles can be errors when installing heating. To a greater extent, this refers to the absence of bias of pipes, warning stagnation of air in separate places, from where the air does not fall into the automatic air vent for heating. Installation requires installation in such problem areas. additional devices Air removal.

Air microbubbles reduce system efficiency:

• Reducing radiators heat transfer: the upper part filled with air remains cold.
• Internal corrosion: air oxygen destroys the inner shell of the equipment.
• Circulation Violation: The movement of the coolant can be partially or completely discontinued.
• Rapid wear of the pump: the blades and bearings of the circulation pump are experiencing regular overload, this leads to a premature failure of the device.
• Additional noise: radiators, pump, pipes are constantly hissing.

An effective way to eliminate all listed problems will be the installation of a manual or automatic air vent - the device for moving air from the network.

Aluminum present in the composition of modern battery alloys serves as a catalyst for water decomposition. Gas bubbles accumulate in places where there are congestion for free circulation, and create traffic jams.

Often air blocks can be observed in the upper part of heating batteries. In such places, the metal during contact remains cold. Therefore, a manual air vent was installed in the heating devices - a crane of Maevsky, familiar not one generation of Russians since 1930. Another name of the rare model is a radiator needle air valve.

To date, modern batteries are designed different types Automatic valves for removing gases that do not require regular control. You can see such a model in a disassembled form in this video clip:

Automatic gas feed device

The device is made in the form of a hollow body with a nozzle, which is located at the bottom of the case. The cylinder is placed a polymer float, connected by a needle-type valve.

Principle of operation of the device Based on the use of the gravity of the floating float. When it is in the upper position, the valve is closed, if omitted, the crane opens. Plastic float is connected to spring spool. When gas bubbles fall inside the device, the float is lowered, and in certain moment The gaze exempts the gas outlet. After removing it, the housing is again filled with the coolant, the float returns to the original position, the spool moves, closing the hole. The mechanism is in standby mode. Detail with the device of the air venture can be found in the photo.

1. The shut-off cap warns the flow of water during the accident and protects the hole from the contamination. In new models, you can find a variant of the forced closure of the valve, allowing to eliminate the air and manually.
2. The reverse valve with built-in auto-mode provides the ability to maintain a gas supply without draining water.
3. A float device is useful and when the system is released or a separate section. Since the decrease in the water level in the chamber will automatically switch the valve, it will help the air to penetrate inside to speed up emptying.
4. The reliability of the operation of the gas supply depends on the hydrostatic pressure, which means that the heat pressure standards must be observed in the heating system.

The principle of operation of the air vent can be seen on this roller:

The shortcomings of the structure include the demanding of the purity of the coolant. Dirty water gradually clogs the hole, it disrupts the tightness of the exhaust valve. To eliminate flow, the mechanism is disassembled and clean.

Another vulnerable place in such models is a leakage on a plot with a thread between the body of the device and the upper lid. The problem occurs after the separation of the seal. Ring-gasket must be replaced or wind the threads of the fum-ribbon.

Features of installing air vent

On radiators, the angular models are usually installed, produced and alternative optionsEspecially for modern heating devices. If a? The collector does not coincide with the connecting? Valves use adapters. If the model of the gas feeder does not provide a shut-off valve, it is advisable to buy it additionally.

Modern automatic air vents are installed in a vertical position. At the same time, it is necessary to ensure that the air fitting is directed upwards. Installation is carried out in the highest parts of the pipeline, boilers, heating devices, reservoirs and in areas where large air accumulation is observed.

The installation process itself is carried out using a special horn key, which is applied to the hexagon of the housing itself. He is under the flask.

Important! Installation using the lever key is invalid. This is able to lead to significant damage and impairment of the performance of the entire device as a whole.

IN modern systems A gas supply with an air valve is one of the important components that provide normal fluid circulation. The design of the device is not good, as everything in the brilliant, therefore, with proper maintenance, it is quite reliable if you select a high-quality model of a proven manufacturer.

The air that falls into the heating system is able to cause a number of negative effects, among which is the cessation of the work of the system, the occurrence of corrosion and even the destruction of the pipeline. Especially harmful air for closed heating systems of large sizes. In order to avoid this, an air vent, 1 inch diameter (25.4 mm, the nearest Russian analogue DU25) is special devices that do not interrupt the stream of the working fluid. Usually they are installed at the top of the heating radiator collector, since warm air accumulates in these places.

Types and designs

Constructive air vent is a float in the middle of the housing, which overlaps the valve, if there is no air in the system, and opens it when gas appears. The outdoor air valve is poured into an external environment.

Depending on the principle of operation, these elements of reinforcement are divided into:

• straight with vertical mutual arrangement of the thread and housing;
• angular with perpendicular location;
• radiator, on which the thread coincides with the appropriate carvings in radiators.

In the class of 1-inch air vents, there are also horizontal, float and non-blockable, but they are less common. The cranes of Maevsky, manually controlled, are also popular.

Manufacturers offer several types of air vents, which differ in the following parameters:

• manufacturing materials;
• sizes;
• management (manual and automated).

The price of manual models is slightly lower, less they are in size, so for household problems, most often, they are choosing them.

Based on manufacturing materials, brass, plastic and steel (stainless steel) air vents are isolated.

The 1-inch air vent has a relatively large diameter of the opening, so used for large and powerful thermal systems.

Features of the installation of the air vent 1 inch

Mandatory requires the establishment of gas-conductive valves on aluminum batteries, since hydrogen is formed there. For the same reason, the air vent must be installed on bimetallic radiators.

Cast iron and tubular radiators, registers and batteries of obsolete types do not require a similar system, because to remove air it is necessary to remove and a large number of The working medium of the coolant, which is unacceptable for the air vent. Installation and disassembly of these types of reinforcement is better in the presence of a specialist.

In our online store Headproke. And along with another heating technology, air vents are presented in a wide range, as well as their detailed description with whom you can get acquainted with detailed description goods. Right choiceYou will always help to make our highly qualified consultants. All air vents presented in our online store are certified and have a number of permits that you can request when buying a product. Order a product, in our store you can not depart from the computer through the basket of the site or by phone. To confirm the order, our managers will call you back, as well as agree time, deadlines and shipping costs. Delivery in Moscow and Moscow region. (Volokolamsk, Ramenskoye, Pushkino, etc.) is carried out by courier of the store during the day, as well as in Krasnodar, Astrakhan, Nizhny Novgorod, etc. Regions of Russia transport companies in the shortest possible time. Having made a purchase in our store, you get the status of a permanent buyer, thanks to which it is possible to purchase goods at prices at a discount.

In any pipeline system, in which water is used as a working medium, periodically can accumulate a certain amount of air. The accumulated air can lead to different unpleasant consequences - corrosion of pipelines and installed equipment, the appearance of foreign sounds in the pipeline, the occurrence of air traffic jams and the premature failure of the system as a whole. In order to ensure normal circulation of the working medium in the water supply system or heating, it is necessary to take appropriate measures to remove the air - set the handmade or automatic air vent valve.

Air Sweets for Heating Systems

The air vents installed on the pipeline for heating systems allow you to cope with the air that appears in the system. With their help, it is possible to drain on time and remove the extra gases and air from the pipes, thereby ensuring the further stable operation of the system. The air ventures can be used in pipeline systems, the working medium in which the non-aggressive fluid is both cold and hot.

The assortment of the company "Terem" has a wide choice of manual and automatic air vents intended for heating systems, from leading European manufacturers - market leaders of the safety reinforcement - ITAP, Luxor, Watts.

Aircraft automatic 1/2, 3/4

Presented in the catalog of our online store Automatic air vents have different diameter Connections to the pipeline system. For example, there is an air vent. Automatic DU15 and an automatic air vent (1/2, 3/4), the price of which is very available. Also among the products being implemented by the online store, the products are presented with side connections and models that have direct release; Hand air vents; Corner models and models with a shut-off valve. All safety reinforcement this type Made from exclusively high-quality and reliable wear-resistant materials - brass or nickel-plated brass and is suitable for installation on pipeline systems of apartments and houses.

Buy air vent automatic - prices

Automatic air ventTo buy which you can in the company "Terem" favorable price- This is a device that ensures the performance of the system as a whole. That is why the assortment presents only reliable models with a long service life, the quality of which is no doubt. When choosing a suitable model of this reinforcement, you should consider such a characteristic as the price - the automatic air vent, purchased in the company "Terem" fully justifies its value and qualitatively performs the provided function.