Balancing valve for heating systems of process pipelines. Balancing valves: why they are needed and why they are effective

The operation of a heating system is often accompanied by uneven distribution of coolant throughout the circuit and connected devices. This can lead to pressure and temperature changes that negatively affect heating efficiency and can damage equipment. A balancing valve helps prevent these consequences, various models which are sold by Forsterm.

Manual balancing valve: operating principle and purpose

This device is a type of pipeline fittings and is used for the calculated distribution of coolant along the circuit and equalization of its pressure and temperature. Regardless of what design the balancing valve has, its operating principle is based on changing the throughput of the pipeline by increasing or decreasing the flow area. This is achieved by gradually moving the spool relative to the inlet of the device, and therefore the device allows for smooth adjustment.

Videos, diagrams of balancing systems

By using a flow meter, flow balancing operations are simplified since the flow value can be read and adjusted at any time without resorting to differential pressure gauges and reference graphs.

Video: circuit balancing devices

The differential pressure regulator maintains constant, at a set value, the pressure difference existing between two points in the hydraulic circuit.

Video: balancing valve - operating principle and diagram (flow stabilizer)

AUTOFLOW devices are capable of automatically balancing the hydraulic circuit, ensuring the design flow at each terminal. Even if the circuit is partially closed due to control valves, the flow rates in the open circuits remain constant at nominal values. The system always provides the best comfort and provides the greatest energy savings.

Range of balancing valves for heating systems

In the catalog you can choose pipeline fittings the following types:

• manual balancing valve - such a device is regulated using a valve and is used in systems with constant pressure levels, for example home heating and water supply;
• automatic balancing valve - such valves are equipped with electric or electrothermal actuators and are suitable for installation in systems with dynamically changing pressure that require fast and accurate response.

The catalog also presents various components that optimize and expand the functionality of valves, in particular flow stabilizers and actuators.

The functionality of existing devices can significantly increase the efficiency of heating or water supply. Their use will extend the operational life of the equipment, reduce noise in the water supply and the likelihood of pressure surges. In our catalog you can find detailed information technical description, which accompanies each balancing valve for the heating system, and Forsterm employees will provide detailed instructions on the selection, installation and operation of this valve.

Everyone wants to have an economical and, at the same time, ideal heating system in their home. Unfortunately, this doesn’t always happen in life.

It is enough for designers to make a mistake in hydraulic or thermal calculations, and additional expenses for the heating system are provided.

Incorrectly selected heating fittings will also contribute. In order for the heating system to perform its functions reliably and correctly, heating engineers have in their arsenal various ways achieving this goal.

• The need for balancing
• Types of cranes
• Principle of operation
• Installation

The need for balancing

The design of a heating system assumes that at each heating point the heating device will produce required quantity heat. Unfortunately, in practice this does not always look like this.

This picture is especially noticeable in multi-storey buildings. It is not uncommon to see a picture where the lower floors are literally suffocating from the heat, while at the same time the radiators on the upper floors are lukewarm.

The same situation arises with the heating of entrances. It is much warmer in the one located closer to the DHW inlet into the house.

This difference in temperature difference is explained by the fact that the closer the heating radiator is to the input hot water, those more heat he gets. Naturally, he gives. Remote heating devices receive less heat, so they are cooler. This means that the hydraulic adjustment of the system is broken. The balance of heat distribution has disappeared.

There are few reasons for system imbalance. The main ones are:

• errors in system installation;
• error in the project or its change;
• airing of the system;
• mismanagement of the heating system;
• ignoring seasonal maintenance.

It becomes necessary to adjust it to restore uniform heating. As a result of this work, each heating device will receive the calculated amount of heat. The temperature will even out, the whole house will be equally warm. To achieve this goal, balancing valves are used.

Worth noting: installation balancing system will ensure uniform heating of each heating device in the house.

Balancing valves are divided into automatic and manual.

Manual ones are designed to configure the network during its installation, and automatic ones change the parameters of the heating network during its operation.

When selecting a valve, it is necessary to take into account many parameters, which include:

• type and parameters of the coolant;
• classification of buildings;
• adjustment parameters;
• installation location in the system;
• purpose of the system.

The types of heating systems depend on the coolant used in them. This could be water, steam, antifreeze. The performance of the system will directly depend on them.

Great importance has the type of building where the balancing valve will be installed. The installation location of the valve is also important - the supply and return pipelines have very wide differences between themselves. Therefore, the balancing devices installed on them will also be different.

The purpose of the system is very important. According to their characteristics, hot and cold water supply and heating systems have quite large discrepancies. For example, in DHW system Only thermostatic balancing valves are used. Thus, choosing a balancing valve is not as simple as it seems at first.

Expert advice: before installing a balancing valve, you must decide in advance on its choice. Maybe this is where it is enough to install a manual balancing valve.

The valve structure is clearly visible in the figure. But what is the principle of its operation, this needs to be understood.

Turning the adjustment handle changes the position of the valve spool. As a result, the size of the section between it and the saddle changes.

Thus, the coolant, passing through a large or small section of the valve, changes its pressure as it changes throughput. Thus, by adjusting the pressure, it is possible to achieve uniform heat distribution for each heating device.

For automatic adjustment For heat distribution, two balancing valves are installed in the system - on the input circuit and in the return circuit. They are connected to each other. The balancing effect of the system will take place automatically.

But to do this, you will need to correctly adjust and configure the entire heating system at the very beginning, at the first start. If all the manufacturer's requirements are met, the balancing equipment works flawlessly.

Please note: some people mistakenly, on the advice of local “Kulibins,” try to install a ball valve instead of a balancing valve. The absurdity of such an idea becomes obvious immediately after the system is launched. The valve does not relate to the control valves on any side.

The insertion rules are simple, but you must follow them all. Otherwise, the desired effect will not be achieved.

When performing installation, you must perform the following operations:

• check the installation of the system;
• cut a thread at the valve installation location;
• prepare the valve for installation;
• install the valve in its place in the system;
• Install a filter in front of the valve.

After installing the balancing valve, it must be adjusted. This process is accessible only to specialists and requires special equipment and knowledge.

Please note: you should not even try to install a heating balancing system with your own hands. IN best case scenario the system will not give the expected effect, in the worst case, the heating system will have to be redone.

Control valves are produced by several manufacturers. Among them, one of the leading places belongs to such well-known companies as Danfoss (Danfoss), Broen, Meibes. The list can be continued.

A wide selection allows you to navigate by price and quality. Parameters such as quality and reliability provide the consumer not only with comfort, but also ultimately with significant savings.

Watch the video in which a specialist explains in detail the design and operating features of a manual balancing valve:

In contact with

anatomy-remonta.ru

Operating principle of a balancing valve in a heating system

Many people know what a balancing valve is and what it looks like. But not everyone knows the principle of its operation.

Valve application area

This valve (faucet) is intended for hydraulic balancing of hydraulic circuits (heating, engineering systems, etc.). The valve can perfectly control the permissible flow rate of coolant, thereby significantly increasing the efficiency of heating systems.

Balancing taps are used to ensure that heating is distributed equally throughout the entire water supply system. With the help of the valve, all heat costs are normalized in such a way that all the necessary hot liquid reaches the batteries in the quantity required. It is thanks to the balancing valve that heat is distributed evenly throughout all rooms of the building.

This valve can operate with fairly high pressure drops and high speeds. working environment, which cannot be said about other cranes.

Valve design

The valve design is based on the design ball valve and has certain additions. These may include an indicator for the shutter, a measuring diaphragm, a position lock, and a pipe (a tap is installed on its surface). The valve body itself can be made of either steel, silumin, or brass. The seal, as a rule, is some kind of membrane system. Such taps with a seal are much more expensive, but they do not require maintenance.

The shutter and valve seat are responsible for fluid flow. As for the valve stem, it can be downward, upward, oblique, or straight. When buying a balancing valve, you must also take into account the feature of the stem.

The stem, which has an oblique shape, has less hydraulic resistance than other similar valves. Such balancing valves have fairly high control precision and excellent flow characteristics.

Main characteristics of the valve

In addition to the fact that this valve can perfectly regulate heating flow, it also has a number of additional settings and devices. For example, the faucet can regulate smooth/step flow settings, block presets, and also regulate the operation of the temperature fuse and bypass valve.

Video: Automatic balancing valves - how it works and how it benefits you

All balancing valves (regardless of their type) have the following characteristics:

The operating temperature of the faucet can be from -20 to + 120 degrees, - the faucet has the minimum length required for installation, - information is calculated directly, without the use of additional devices, - it does not take up excess weight, because has a compact size,

Made from durable metal, which will not lead to deformation in the future.

Balancing valves are necessary in every heating system. Depending on how much big square for heating, mounted required amount valves for proper operation systems. The use of the necessary balancing equipment directly depends on what type of heating system is used in the room.

housedb.ru

What is a balancing valve for a heating system

Any type of heating system requires some adjustment or balancing. The purpose of this process is to drive the coolant flow in each of the heating branches to the calculated parameter, so that each radiator receives sufficient quantity heat for stable operation.

Previously, differences in pipe diameters were used, regulated this moment using washers that could provide the required amount of fluid flow. However, today all these means are obsolete - they have been replaced by a balancing valve, which looks very similar to a standard valve.

In its design, it is additionally equipped with two fittings that perform the following functions:

1. Measure the pressure in front of the valve and immediately behind it;
2. A capillary tube can be connected to them so that it can interact with a number of other control valves.

This device has a range of positive characteristics:

• Allows you to significantly reduce costs. People who have installed such devices say that after such work, the amount of fuel used is significantly reduced;
• It becomes much more comfortable to be in the room. It turns out that in each room you can get the temperature regime that will be more suitable for it;
• Eliminates most of the difficulties that arise during the system startup process. This process becomes quite simple.

If the battery does not have a thermostatic valve, then you cannot do without a balancing device. They always place it only on the return pipe, and this is done where it approaches the common main. With a small number of radiators in the house - about 5 pieces - this device allows you to configure everything efficiently.

For more radiators this system will not work, since some radiators will heat up more than necessary, others less. As a result, the balance will be upset.

To ensure normal operation in this case, a differential pressure regulator is installed immediately after the balancing valve; they are connected to each other using a capillary tube. The valve is adjusted to the highest flow rate, and as hot water consumption decreases, the pressure in the pipes will begin to increase.

Due to the capillary tube of the differential pressure regulator, the flow rate will be adjusted. As a result, the system will be able to maintain its hydraulic balance.

Balancing valve diagram for a heating system

Valve installation

Balancing valves VIR 9505 for heating and cooling systems

Balancing valve, designed for use in the heating system of a private home, is not a very complicated device in terms of installation, so it can be installed with your own hands. It should be noted that the correct position must be ensured.

There is an arrow on the valve body that indicates the direction of water movement. Therefore, it must be placed in the position as shown on the valve. As a result of this action, it is possible to obtain the required design resistance and the required coolant flow.

It is worth noting that some manufacturers produce universal devices that can be mounted in any way. The balancing valve must be cleaned of any contamination before installation. In addition, various foreign impurities can also pass inside the heating system. In this regard, you will need to install two filters in front of the tap - coarse and medium.

To prevent turbulence in the system, it is necessary to make small straight sections of pipe before and after the valve. Often the manufacturer provides similar requirements in the valve instructions.

The valve needs to be installed using some certain rules. In particular, filling the system with coolant, if its design has a balancing valve, must be done using a special technology. To do this, you will have to install filling fittings in the system.

This is quite suitable for designs equipped with dynamic valves. They are placed as close to the valve as possible, closer to the heating boiler on the return pipe. The supply line must first be shut off.

The instructions for the valve operating in automatic mode contain a special table indicating the pressure drop and the corresponding flow rate. However, all preliminary calculations should be made before starting installation work.

Connecting a tap with automation

There are a lot of manufacturers of balancing valves; high-quality products are produced by Danfoss. This is a Russian manufacturer, so such products are not too expensive - 2300 rubles. They are made from stainless steel or duralumin.

Among foreign manufacturers, the most popular are Italian products of the Giacomini brand. The most versatile of these valves is the R206C model. We can say that these products are the best in the whole world. In this regard, they have such a high cost - at least 5,000 rubles.

Another Russian company produces valves that are equipped on both sides with all the necessary filters. Despite the fact that the product is of quite high quality and also includes filters, the cost of Watts valves is not too high - only 1,500 rubles.

housetronic.ru

Balancing valve in the heating system: its purpose, installation and features

Most modern users perceive the heating system as a set of pipes and radiators, complemented by a heating boiler and a circulation pump. But such opinions are erroneous. It also contains a number of auxiliary components, without which the heating operation, to put it mildly, would not be of very high quality. One of these elements is a balancing tap or valve.

Purpose

A balancing valve in a heating system is used to ensure proper distribution of heat transfer. That is, there are times when in one room the batteries are hotter than required, and in another they are much colder than desired. That is, improper distribution of the coolant occurs. This means that adjustment is required to correct this situation.

A balancing valve is a type of shut-off valve through which hydraulic resistance is regulated. This is achieved by changing the cross-sectional diameter of the pipe in a certain area.

IN Lately when designing heating (both for an apartment building and a private house), a balancing valve is immediately added to the system. However, what should owners of ready-made heating systems do?

There are several “symptoms” that indicate the need to install shutoff valves of this type:

• Absence comfortable temperature even at maximum load.
• Significant fluctuations in room temperature with a constantly equal load in the heating system.
• Difficulties in starting the system - inability to reach rated power.

All this indicates that it is necessary to install a balancing valve and carry out regulation. It will allow you to adjust the flow of coolant to one or another part of the system.

Benefits of use

Installing a balancing valve will help solve the above problems in heating operation.

In addition, the following advantages of using this equipment can be highlighted:

• Reduced costs - that is, owners of private houses note that after balancing the system, the amount of fuel consumed decreases.
• Increasing indoor comfort - you can achieve a more suitable temperature level for each individual room.
• No difficulties during startup - the use of balancing fittings will simplify the startup of the system as much as possible.

To adjust the amount of fluid passed through in different sections at a given flow rate into several holes, a balancing valve is used. These devices have manual or automatic adjustment, allowing you to regulate the pressure in the pipeline system. This function, and valves to regulate flow rates, but unlike them, only a balancing valve can regulate the hydraulic local resistance.

Modern large heating systems are not able to cope with the uneven movement of warm water, which leads to improper heating in different rooms. Often, incorrect calculation of water supply leads to the fact that the coolant consumption is very high, and not all the liquid reaches the radiators in the back room.

To equalize the flow of warm water supplied by boilers in different branches of the heating system, balancing valves are used, which ensure high-quality operation of the coolants.

The purpose of the product can be different - it is used both in the hot water pipeline and for residential premises various types and sizes, including if electric heat pumps are installed in the pipeline.

Most often, this device is used by specialists in hydraulic systems to regulate the local level of hydraulic resistance by reducing or increasing the cross-section inside the mechanism. It is simple to use, thanks to mechanical work can function smoothly. Once we have figured out what it is, we can proceed to selecting the product and installing it.

Operating principle and design

The balancing valve design is similar to that of a conventional ball valve, but it has distinctive details:

1. Shutter indicator;
2. Measuring diaphragm;
3. The pipe on which the faucet is installed;
4. Position lock.

The body is usually made of brass or steel. Also, for proper functioning, a membrane in the form of a seal is installed in the structure. The seat and valve monitor fluid flow. The designer also contains a valve stem; it comes in four types: straight, oblique, rising or falling. To understand how this device works, you can see the figure below.

As can be seen in the image, the rod has an oblique shape, which reduces hydraulic resistance. Such a unit has high precision control of liquid flow by differential pressure regulators and excellent performance in terms of service life despite the coolant temperature.

What is the difference between a tap and a valve?

To regulate the flow of fluid, it is a cheap analogue of the original valve, which allows you to regulate the flow area more smoothly and accurately. Also, the second one has holes in its design for measuring the amount of liquid passed by a flow meter.

The valve is essentially a simpler balancing valve, since it also serves to regulate the resistance of the passing liquid, but it does not have holes for measuring the amount of heated liquid material.

Another product that controls coolant flow is balancing valves. It works on the same principle as standard valves, although there are models with holes for measurements. Ability to take measurements important indicator for the correct installation of such devices, so when choosing products, choose those that have holes in their design for this.

Types of valves

There are two types of products for hydraulic balancing of heating systems:

• Automatic or dynamic, designed to maintain constant pressure differences in two-pipe heating systems or to control flow in single pipe system heating.
• Manual valve for balancing - used as a diaphragm where it is impossible to limit the limit values ​​of liquid flow; this includes a valve-type device.

In addition, these products are classified according to various dependencies: type and parameters of the working environment, type of room, functions and types of connections. For example, there are models for installation in apartment building, and there are copies for installation in a private home. There are also subtypes of balancers for installation in “liquid heated floors”.

How to choose

If you decide to install a shut-off and balancing valve in your heating system, then decide in advance which product is suitable in your case based on four factors:

1. Control type – automatic or manual balancing valve;
2. Functions – why and for what purpose will you install the device; the product will be installed for a multi-story or one-story private house;
3. Mounting method – fixing flanges or threaded;
4. Popularity of the manufacturer - you should not purchase crafts from unknown companies; pay attention to models from such companies: Danfoss, Watts, HERZ, Cimberio.

When you have made your choice, you can safely purchase the product. You can install it yourself, but it’s better to contact a specialist: the problem is that they are configured special device, without which it will not be possible to install the unit correctly.

DIY installation

Installation in a hot water supply system or heating system is only possible if the device is provided for by its design and there are problems with the distribution of liquids.

You can install the unit yourself, the main thing is to take into account the installation rules and certain features of the work. You need to have water supply or heating piping diagrams on hand.

Installation Rules

• In order to avoid turbulence inside the circuits, the product must be installed on a straight section of the pipe;
• Observe the direction of flow of hot liquid, it is indicated on the body of the product; the same rule is appropriate if an additional check valve is installed;
• Before installation, be sure to flush the heating pipeline and drain all liquid from it;
• After installation has been completed, the balancing valve must be adjusted to allow the device to function correctly in the future;
• During installation, monitor the position of the spindle and other structural parts; they must comply with the standard;

Video editing

Detailed description of the design and operating principle, as well as correct installation balancing valves in the heating system is shown in this video, using the Cimberio Cim 777 model as an example.

This video describes how to properly adjust balancing valves. The video will help both a specialist in the installation of heating systems and an ordinary householder who decides to install the product and adjust it correctly without calling a specialist. A specialist in the installation of hydraulic structures will calculate the capacity of the pipeline, calculation required pressure and will select the indicators that suit your case.

Any heating system needs timely and high-quality adjustment; these manipulations can be carried out in a variety of ways.

Only if all parameters in individual sections of the network are as close as possible to the calculated data will it be possible to achieve high operating efficiency.

That is why, for high-quality adjustment, a universal balancing valve for the heating system is used.

Requires precise superstructure of all data for maximum efficient work

a brief description of

Every heating system needs professional hydraulic tuning. The main task of such adjustment is to regulate fuel consumption to the initial calculated indicator, so that to each installed battery the required amount of heat was supplied. The system setup itself displays the final water consumption for a certain area, which was previously calculated.

It must be remembered that any water system requires initial setup

Traditional schemes involve ensuring optimal flow rates with a special pipe diameter. If the heating system has more complex configurations, then adjustment is carried out with universal washers.

Each of them has a certain passage diameter, due to which the required volume of water is supplied.

Of course, such configuration methods do not apply to innovative technologies, since in modern world It is common to use an automatic balancing valve for a heating system. It is customary to add two fittings to this mechanism, which constantly test the pressure value in different zones in relation to the main control device.

Such parts are also used for mounting a specific capillary tube. Experts say that modern fittings interact perfectly with various controls.

In this video you will learn how the balancing valve works:

Features and Benefits

Those who have already worked with control valves note that their characteristics are almost similar to other pipeline elements. For the manufacture of such parts, brass and bronze are used, but galvanized products can also be found. Interesting fact It is believed that more than 90% of the total assortment on the world market is occupied by brass valves. This trend arose due to their reliability and durability.

Reliability and durability are the main factors when choosing a valve

Among the many positive characteristics of balancing valves for heating systems, the following can be noted:

1. Affordable price.
2. The work associated with the planned setup of the system is significantly simplified.
3. High degree of reliability.
4. The master has an excellent opportunity to fine-tune the temperature and pressure level.
5. Long service life.

There are practically no negative characteristics of such products. In addition, in domestic use there is simply no alternative to balancing valves.

Types of valves and their design features

Today there are two types of control valves, each of which has its own performance characteristics. Before buying a particular model, you need to carefully study their basic description. Most often, all specialists install the following balancing valves:

1. Universal unit with automatic system management. A special feature of such products is that they completely control the heating system without human intervention. The functionality of the valve allows you to maintain a constant pressure difference between the return and supply two-pipe system. Concerning single-pipe heating, the device controls the continuous flow of coolant. Available for sale multifunctional models, which work perfectly in tandem with each other. The use of such units leads to changes in the flow rate and pressure difference in the pipeline. It is worth noting that the coordinated operation of such valves occurs thanks to a special impulse tube. Interior The automatic device is more reminiscent of a piston pressure reducer. But they should not be confused, because they perform completely different functions.
2. Manual valve. This device occupies a leading position in demand due to affordable price and durability.

Any quality part should include o-rings, for example

But among the main ones design features experts note several nuances. The thing is that a high-quality part must consist of the following elements:

1. Universal adjustment spindle. The main working part is presented in the form of a cone, screwed into a special saddle. At the moment the spindle is activated, the coolant flow is completely blocked.
2. The cap, which can be made from various materials, but most often made of plastic. It is worth noting that metal products are considered to be of the highest quality and most durable.
3. A durable brass body, which is equipped with all the necessary threaded pipes so that the user can connect the pipes. In the internal compartment of the device there is a special seat in the form of a small vertical channel.
4. O-rings made of high quality rubber.

But main feature Such a valve is that it is equipped with two fittings at once.

These units perform the following functions:

1. They control the pressure level inside the system both before and after the valve.
2. Provide reliable fixation of the capillary tube.

Each fitting necessarily measures the pressure level, and if during operation sudden changes in values ​​were detected on the regulating mechanism, then the water flow is calculated.

Three-way valve for heating systems:

Operating principle according to the standard scheme

Novice craftsmen are often interested in why a balancing valve is needed in a heating system. But before you get acquainted with the functionality of this unit, it is necessary to study the principle of setting up the system. It is enough for the master to imagine a dead-end branch with several standard batteries, which act as a kind of source of energy consumption. A certain volume of heated coolant is supplied to them.

It is worth noting that the design temperature is selected based on the fact that it is enough to heat a certain room.

The exact cost figure will be known only after the master has carried out all the necessary calculations.

Difficulties arise when special thermostatic valves are not installed on the radiators. The thing is that any hydraulic adjustments will be made using a manual balancing valve. Fix this part on the return pipeline. When all necessary calculations produced, then the valve is set to a certain number of revolutions. As practice shows, in the regulated branch there is always constant flow.

During installation, you will save on radiators

Despite this, many owners of private houses are wondering how to properly adjust the valve when the flow changes periodically. Initially, it should be noted that this situation occurs when conventional radiators are equipped with universal thermostatic regulators responsible for heating the room. Such details can create an additional obstacle in the path of water, which will affect the flow intensity. In this case, the flow rates will change significantly in the return pipeline.

Timely installation of balancing devices will allow you to achieve the effect when you do not need to install too many radiators (usually 5 pieces are enough). If the master decides to limit the thermostat control limits, he will be able to quickly adjust the heating circuit.

Of course, there can be more than five radiators, but they will definitely go to waste. If you block the flow of coolant from the thermostat of the first radiator, the technician will be faced with an increase in flow to the second battery. The valve will definitely close, and the flow will go to the next unit. It is this principle of operation that will be considered relevant for all heat consumers. If the technician does not take urgent measures, then some radiators will overheat very much, while others, on the contrary, will not have enough coolant.

Balancing valve with internal thread STAD:

Professional installation

Installation and adjustment of the balancing valve is not considered difficult, since Every man can cope with these tasks. The main difficulty can only arise from the fact that it will be difficult for the master to achieve a certain position of the unit. The arrow on the body must be in the direction of water movement. Only in this case can you obtain the optimal design resistance and correct flow rate. Some modern manufacturers allow installation of the valve both in the direction and against the main flow. Depending on the chosen model, the rod may occupy different positions.

A quality valve must provide for the need reliable protection working parts of the valves: ingress of various mechanical contaminants is unacceptable. It is for this purpose that a special mud trap or filter is mounted in front of the device. To avoid turbulent water flow, it is necessary to provide straight sections of pipe of sufficient length both before and after the valve.

It is worth noting that this very requirement is included in the accompanying documentation of reliable manufacturers.

Network balancing

Most often, those craftsmen who professionally install heating systems determine the coolant flow on the batteries in a very simple way: take the total number of revolutions of the balancing valve and divide by the number of used heating devices. These simple steps help you find out optimal step adjustments. Gradually moving from the last radiator to the first, carefully close the taps with the resulting difference in speed.

In addition to the main adjustment method, there is an additional, possibly more accurate

Of course, this method is approximate, since it does not provide for the option that batteries can be of different power. That is why it is better to use it for preliminary tuning, which allows for certain corrections to be made during active operation.

A completely different method, which is based on measuring the actual surface temperature of batteries, deserves special attention. The balancing valve can be adjusted correctly as follows:

1. Initially, you need to gradually open absolutely all the valves and put the system into operating mode with a supply temperature of +80˚C.
2. Using a contact thermometer, it is necessary to measure the temperature of each heating device.
3. All differences in data must be eliminated by tightening the taps of the middle and first batteries. It is forbidden to touch the latter. The near radiator should be opened slightly by 1.5 turns of the valve, but the middle ones by 2.5.
4. The system needs to be given a little time to adapt to completely new operating conditions. After 30 minutes, you need to take measurements again. The main task of the master is to achieve a minimum temperature difference between the batteries closest and farthest to the boiler.

It is also worth considering that weather conditions and the temperature outside the window do not affect the performance at all, only the difference in the heating of the radiators is important.

Disassembly of automatic balancing valves ASV series:

Experienced installers of heating systems note that any adjustment work should be carried out on the basis of calculated data, which is especially important when drawing up project documentation. To prevent errors, you need to use a special valve diagram and measurements taken in advance. The adjustment process begins only when the handle rotates and the spindle moves. If the master does not have all the necessary measurements at hand, then the adjustment process itself will be considered conditional. In this case, efficiency and accuracy cannot even be discussed.

As for straight pipe sections that prevent water turbulence, their length should be at least 10 cm. If we are talking about an automatic device, then the main unit must have a fitting that plays important role when filling the circuit with the inlet valve closed.

Whatever the heating system, it requires adjustment, which can be done in a certain way. This is necessary so that the parameters in individual areas are close to the calculated ones. This makes it possible to achieve operational efficiency. To adjust you can use different means, however, the most common and modern is the balancing valve, the operating principle of which is presented in the article.

Need for use

Heating systems require balancing, which is a hydraulic adjustment. The purpose of these manipulations is to bring the individual branches of the circuit to the required value, only in this way will the required amount of heat flow to each radiator. If we are talking about simple systems, the required coolant flow is ensured using correctly selected pipe diameters.

Use in complex systems

Complex systems require adjustment in their operation using special washers, the size of the passage of which ensures the flow of water into the required volume. Listed methods are obsolete, in use today modern way, which is expressed in the installation of balancing valves. These devices are manual valves that are used to regulate the flow of coolant. The mechanism has an addition that blocks the flow; fittings are used for this.

Principle of operation

Once you have learned what the operating principle of which will be described below is used for, you can begin installing the device. First, you need to understand the principle. To do this, you can imagine a dead-end branch that has several radiators, the latter acting as energy consumers. A certain volume of coolant, heated to the design temperature, is supplied to them through the pipes. It is determined depending on how much thermal energy will be needed to heat the premises.

It is used when there are no radiators and the water flow for each of them is constant. The mentioned device should be located on the return pipeline, in a place where it can be inserted into the common line. This allows you to carry out the necessary measurements by setting the valve to the required number of revolutions. A certain constant flow of water in the regulated branch will be guaranteed. However, users quite often encounter that the flow rate changes; this can happen when thermostatic regulators are installed on radiators. They are designed to control the intensity of heating of the room and create an obstacle in the way of water, reducing the volume of its flow. In this case, the flow rate of the coolant volume in the return common pipeline will change.

For reference

A manual balancing valve will guarantee a certain volume of coolant, which will allow you to achieve the desired effect when the number of batteries is small and does not reach 5 pieces. If you limit the control limits of thermostats, then the existing circuit can be easily customized. If the number of radiators is more than mentioned, then they will go to waste. The thermostat installed on the first battery will block the flow of coolant, which will cause an increase in flow on the second radiator. The valve on it will close, the flow will move to the third radiator, and so on. Ultimately, such work will lead to the fact that some batteries will overheat unnecessarily, while others will remain cold, and the branch will become unbalanced. An automatic balancing valve must be installed on a riser or branch with a sufficiently large number of heating devices, only then the system will work smoothly.

Operating principle of a valve on a riser with a large number of radiators

If an automatic balancing valve is used under the conditions described above, then the operating principle is somewhat different. The valve is adjusted to the maximum design water flow. During operation, when the thermostat of any battery reduces hot water consumption, the pressure in the area will begin to increase. Automatic regulator will receive an impulse through a capillary tube, this will allow the device to quickly respond by adjusting the water flow, then the remaining thermostats will not have time to operate, the flow will not be blocked, and the system will remain hydraulically balanced.

Classification

The balancing valve, the operating principle of which was described above, is offered for sale in a wide range. Before you make a purchase, you must understand the classification. Thus, when choosing, it is necessary to take into account the design parameters of the system at the installation point. The master must pay attention to maximum pressure working environment and nominal parameter, and also take into account the pressure difference in the return and supply circuits.

The valve may belong to one or another class depending on the area of ​​use. Thus, the devices are used at facilities individual construction, housing and communal services, in industrial facilities and on sections of main pipelines. The balancing valve, the operating principle of which you should know before purchasing the device, can be selected according to the type of piping system, which is designed for air conditioning, hot or cold water supply, cooling or heating. Among other things, the devices described differ in the type of coolant, such as steam, water or glycol solution. According to the type of installation, valves are divided into fixed and adjustable.

Main types of valves

If you are interested in the MSV balancing valve, then it is offered for sale in a wide variety; among other models, you can see devices with manual adjustment, with the help of which it is easy to adjust individual sections of the system and the entire pipeline, determining the pressure and flow of the medium at control points. Using manual balancing valves, you can turn off individual areas, freeing them from the working coolant. The main advantage is low cost, but you should pay attention to some disadvantages. Among the main ones is the ability to set balance only for average calculated parameters direct current. When flow fluctuates, as occurs in plumbing systems, the balancing can be disrupted.

An automatic balancing valve, the price of which is 6,000 rubles, can be automatic; it is installed on the return and inlet circuits. Another type of valve provides the ability to regulate the temperature of the working environment.

Installation Features

If you decide to purchase a Danfoss balancing valve, you should first familiarize yourself with the installation features. In order to guarantee the accuracy of measurements, there must be sections of pipe without bends before and after the device. The length of the section will depend on the diameter. Before the valve, the length of the straight pipe should be equal to 5 pipe diameters, after the valve the length should be two diameters or more. If these recommendations are not taken into account when installing a Danfoss balancing valve, the error in measurements can reach 20%.