The three-way valve of the ESBE type is just one of the elements of the life support systems of a residential building. On the one hand, it is a simple design. On the other hand, it performs an important task in engineering networks. Demand creates supply. There are many models represented by different manufacturers on the market. Three-way valves manufactured under the ESBE brand are characterized by good performance.

A little useful knowledge

Three-way swivel valve ESBE

The three-way valve is an adjusting device in pipelines with a liquid working medium. Speaking simple languageThe built-in in the design of the heating network it will act as a well-known - a crane mixer that switches or mixes streams. Valve installation allows you to solve a number of practical tasks:

• Redirect streams coming from different pipelines.
• Attainment the desired temperature Working fluid due to mixing hot and cold stream.
• Obtaining a jet with a constant temperature by dynamic redirection.

Complicated? Only at first glance. In order to understand the principle of operation of the device, consider its design features.

Design

The three-way mixing valve has a regulating element, which protrudes rod or ball. The rod moves vertically, the ball is around its axis. Since the movement of the adjusting element does not fully overlap the flow of the working fluid, its mixing and redistribution occurs. The simplest models are the usual crane. Their main advantage is low cost and constructive simplicity. The disadvantage is the inability to stabilize the temperature at the output. Despite the disadvantages, the crane can be installed in the heating systems of the type "Warm floor". Now imagine a valve-crane with an electric drive. This design is already functional, as it is capable of adjusting the temperature automatically. A simple valve is balancing. Its main feature is a cross section setting to pass the working stream. Conditionally, the principle of its work can be described as follows:

• The handle is rotated by 50% - uniform mixing of two threads, since the inlet valves will be equal.
• The handle is rotated 100% - the first valve is pressed completely and overlaps the flow of fluid flow.

The modifications presented in the market may have different turns of the handle, but the principle of their work is maintained. The crane and its position are adjusted manually, thereby ensuring a balance between two threads.

Views

There are several types of such devices:

• With hydraulic drive.
• With pneumatic reception.
• With electric drive.

The three-way valve with an electric drive, for example, the ESBE model will have a slightly different principle of operation. The electric drive performs the function of an ordinary thermostat, which makes it possible not to simply mix streams, but to maintain the specified temperature. With a decrease in / increasing temperature, the drive automatically changes the position of the shut-off reinforcement, increasing or reducing the flow cross section hot water. At the same time it changes and the section in the intake location of the cold stream. As a result, water with a constant temperature is obtained at the output. No intervention from man esbe crane does not require. Its work is regulated by automatic.

Princesse work valve

Esbe valves equipped with electric drives and thermostats are equally well suited for use in heating and hot water systems. In principle, the tap can be installed in any pipeline where it is necessary to mix two fluid flows with constant temperature maintenance. No matter how high-quality and reliable is a three-way valve with a thermostat, it will have one disadvantage, which is typical of all the devices of this species.

Such a disadvantage is the strong severity of the input points. The severite cross section of the input point, in turn, increases the hydrosist.

Such a crane will work well in water supply systems. ESBE valves are suitable for installing "Warm floor" systems, but it requires a special connection scheme. In addition to the designs described above, three-way thermostatic valves are presented on the market. These devices are often confused with each other, but they are still completely different. Thermostatic models have a thermostat with remote sensorBut they differ not only by this element, but also the principle of work. Unlike conventional models, in thermostatic cranes, the flow is only adjustable at one point, the two remaining are open, and their cross section does not change. When choosing such a design, it is necessary to check whether there are nonsense at point 2, otherwise the hydraulic resistance will result in difficulties in the device. It is possible to minimize the problem will have to install a mixing valve into an alternative ring.

Connection schemes

Valve three-way - inclusion scheme

Almost all the three-way valves presented in the market are connected in one diagram. Consider it on the example of ESBE cranes. Let's start with water supply systems, since here the faucet is used most often. The main goal with which the valve is installed is to reduce the risk of reverse flow. Between two threads - with cold and hot water - the pressure drop will inevitably happen. It can lead to the appearance of the reverse stream. When installing ESBE valves, such incapsions are rare. In the heating systems, the ESBE valves are used only in three directions:

• In mixing nodes of type "Warm floor".
• To stabilize fluid flow temperature in the incoming pipeline of the boiler.
• To reduce the supply of heat carrier with a high temperature from the boiler to the pipeline.

Valve in the mixing unit

Consider how the ESBE crane is used in the "Warm floor" systems. The mixing unit creates an additional circuit in the system. With a distribution collector, it is connected by two points, which provides a permanent circulation of fluid at the output. At the input stream is provided only if it is necessary to obtain additional heat. A thermostat valve is connected to the mixing unit. Since at point 2, all valves, including ESBE, are alone, there may be insufficient pump consumption. To increase it, the second line is created, which allows to reduce electricity consumption with pumping equipment. The second line is not always required. Some models of three-way valves have a sufficient passage.

Warm floor diagram with three-way valve

In the event that there is insufficient stream power on the first line, the thermostat will not be able to open the passage to the required value . The problem is easily solved in two ways: by the second line or installing the balancing valve on it. The second method is more productive. It allows you to accurately set up the stream. You can connect a three-way valve and on another diagram that does not require the installation of the balancing crane. For this, the pumping equipment connects to the second line. As a result, the temperature of the input and output streams is compared. The tap with a thermostat can be installed in systems with one contour. The easiest example of such systems is the warm floors in small rooms. Creating a mixing site here , with its considerable dimensions , Not always justified. It is better to connect a warm floor with one contour. The three-way valve with the thermostat is mounted on the return on which the cooler has been flowing. In this case, the thermostat will lead the shut-off valves, increasing the cross section and opening the stream. After heating the pipe, the thermal sensor considers the data and reduce the stream.

For boilers heating

Three-way valves for heating boilers should be considered separately. The main task of their installation is to prevent the cold coolant stream to the incoming pipe connected to the boiler. Otherwise, condensate will be formed on the pipes, and the temperature differences in the system will lead to its deformation in the joints of the joints. It is not necessary to talk about the consequences of such deformations. At best, a small flow is formed, at worst - the system will have to be fully changed.

Three-way valve in the heating system

Especially important to connect lock valves to solid fuel pots, characterized by essential temperature drops during operation. The connection of the mixing valve allows you to ensure that the input of the boiler equipment does not receive a fluid, the temperature of which is below 50 degrees. As a result, the temperature difference decreases, the negative impact of cold with all the ensuing consequences is reduced. Recommended installation mixing valves In systems with plastic pipeline. Here the goal is to prevent high temperature heat carrier entering the pipeline. For all the advantages of polymers, they poorly withstand the frequent increase in temperature above the operating parameters. In such working conditions, the pipeline is quickly destroyed. The temperature indicators recommended by experts constitute the range from 75 to 85 degrees. Installation of valves allows you to solve many problems, but the model must be selected in exact accordance with technical characteristics engineering network, and must have a sufficient passage.

Conclusion

The simplest shut-off valve - three-way mixing valves - important element Engineering communications. Modern modelscreated at the junction of old traditions and modern technologiesallowed to achieve excellent results of their use with the most different goals.

Three-way valve with a servo for DHW

For many novice plumbers, there are many sacraments and riddles. In this article I will try to explain how it will work with a servo-drive different models. We will look at the logic of the work and the electrical connection scheme.

Option 1: Price from 6300 to 9200 rubles. There may be options for articles.

Option 2: Price about 2500-5000 rubles, if you try to find it on a Chinese site and order from China.

Option 3. Dear option, but there are a lot of options. The price may be about 15-20 thousand rubles.

Connection diagram of a three-way valve with servo drive for DHW

The valve can be installed both on the feed line (feed) and on the reverse line of the pipeline (reverse).

Many will ask the question: - And where better? On the feed or on the return?

According to the functional, the DHW is not fundamentally. But there are some nuances, why you need to put on the feed or on the return.

Nuances between feeding and reverse:

Anyone Does you know why you need to put a hydroaccumulator on the reverse line of the pump? Or believes that it can be put anywhere? Do you know why the pump is put on the feed or on the return? Answer: All because from where these elements are changing the pressure distribution at different points of the pipeline. And in some cases, again, it becomes convenient to pour and merge the heat carrier in the heating system. Also helps to avoid vesting and much more.

And why In the manual of boiler equipment recommend keeping the pressure of at least 1.5 bar? Because in the heat exchanger of the boiler you can not reduce the pressure! Reduced pressure leads to cavitation of the coolant in the heat exchanger. Also leads to early boiling of the coolant. And this all leads not only to lower the power of the boiler, but also the deposition of the scale in the heat exchangers, which leads to the deposition of scale and heat exchanger. Which in turn will lead to a small duration of the boiler equipment.

And you thinkIf a pressure gauge shows 1.5 bar, this means that the pressure is less than 1.5 BAR cannot be present in the system at the same height where the pressure gauge? Answer: This may be more often this happens at the owners who are independently invent, where the pump and the hydroaccumulator will stand. And do not understand how the pressure will be distributed after that.

Also, how the hydroaccumulator affects the pressure distribution: http://santeh-baza.ru/viewtopic.php?f\u003d2&t\u003d93

Why do you need a three-way valve for DHW?

The main task of the three-way valve for DHS is to redirect the movement of the coolant from the heating system towards the boiler of indirect heating (other heat exchanger) and back automatically.

As soon as the team came to heat the boiler of indirect heating, then you need to redirect the coolant towards the Zmeevik BKN. The heating signal is generated by a special relay, which is located at BKN (the boiler of indirect heating). That is, BKN has a built-in electric thermo relay, which gives the switch to the switch.

What does a three-way valve for DHW look like?

Electrical diagram of valve operation for AMONA GVS boiler?

Electrical circuit with boiler and boiler

Servo Drive has three contacts one common. If you give a voltage of 220 volts to two contacts (direction 1 + total) will be one position. To another position, you need to give a voltage of 220 volts to another contact (direction 2 + total). Phase and zero network 220 volts are not fundamentally.

Option 3. The most difficult version that requires more detailed study. It has a variety of functionality of work.

If you have a more productive heating system + DHW with big expenses. That use valves of option 1 and 2 does not have the ability, as they have a small bandwidth!

This device consists of two parts:

1. Rotary mixing valve (diameter to choose from)

Servo ESBE.

Servo model: ESBE ARA641 by 220 volts. 30 seconds. Article number 12101100.

Drive characteristics:

1. Rotate 90 degrees. There is a deduction adjustment setting. You can make a little more or slightly shifted aside.

2. 3 Speakers. That is, 3 contacts 220 volts for control: Terminal 1, terminal 2 and a common terminal.

3. The time for which the drive turns 90 degrees depends on the model. Model ARA641 30 sec.

4. Cable wires 1.5 meters.

5. Torque force: 6 nm.

Electric servo diagram: ESBE ARA641

This device has three conductor: blue, brown and black.

Blue - Common guide, usually closed zero

Brown and black These are conductors of position 1 and 2.

When a 220 volt voltage is on blue and the black drive turns into one direction 90 degrees.

When the voltage is 220 volts on the blue and brown drive turns to the other side by 90 degrees.

Such servos have a button to turn off the direction of movement. That is, you can use the valve to the desired position during repair or test.

Pay attention, the more topics you may need torque.

In the eSBE catalog You can pick up other valves and servo drives!

For example,

1. Select not three-point (tripkontact) control, and two-point control. That is, one contact is constant voltage, and on the second contact you simply give or select the voltage.

2. The angle of rotation can be more than 90 degrees. For example, 180 degrees.

3. Closing time is not 30 seconds, but much more. For example, you may need a smooth transition to 1200 seconds.

4. Take a drive with another torque power.

5. Drive by 24 or 220 volts.

6. You can choose not only to switch, but also to obtain the desired temperature mixing.

Download the ESBE catalog For selection of valve and servo: esbekatal.pdf

If someone has a two-point signal from an indirect heating boiler or from some thermostat that has only two-point contact, then an electromagnetic switching relay can be used.

This model must be sought in specialized electricians and electronics stores.

Model: ABB CR-P230AC2. 220 volts are fed to contact 1 and 2. The load of switching contacts by 8 amps does not exceed. 8 A x 220 volts \u003d 1700 watts. It will endure equipment up to 1700 W. Not applicable to pumps and incandescent lamps as the first start requires high currents.

In order to connect it to the Wires, a special jack is used:

ABB CR-PLSX (logical) for the CR-P relay

The following should happen:

That's all right. Specify questions! Did you all understand? Maybe something is missing?

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A series of video tutorials on a private house
Part 1. Where to drill well?
Part 2. Arrangement of the well on water
Part 3. Laying the pipeline from the well to the house
Part 4. Automatic Water Supply
Water supply
Water supply of a private house. Principle of operation. Connection scheme
Self-priming surface pumps. Principle of operation. Connection scheme
Calculation of self-priming pump
Calculation of diameters from central water supply
Pumping station water supply
How to choose a pump for a well?
Setting up pressure relay
Pressure Relay Electrical Scheme
Principle of operation of the hydroaccumulator
Sewage slope for 1 meter SNiP
Schemes of heating
Hydraulic calculation of the two-pipe heating system
Hydraulic calculation of a two-pipe backway system of the heating of the loop of Tichelman
Hydraulic calculation of a single-tube heating system
Hydraulic Calculation of the radial layout of the heating system
Scheme with thermal pump and solid fuel boiler - work logic
Three-way valve from Valtec + thermal head with remote sensor
Why bad warm radiator heating in an apartment building
How to connect a boiler to the boiler? Connection options and schemes
Recycling of DHW. Principle of operation and calculation
You do not make the calculation of hydraulic and collectors
Manual hydraulic heating calculation
Calculation of warm water floors and mixing nodes
Three-way valve with a servo for DHW

I provide passport data and video operation of the servo. Also show how to connect and mount and then configure the servo for the three-way valve.
And so embark ...
In this article, we will consider today the most universal servo ESBE. 99K2, which is depicted in the picture and valve ESBE VRG131.
The servo is sold with two sets of connection, for two different standards of three-way valves with a rotating valve around the circular to an unlimited turn. This will also be indicated in the passport and video.
It is important to understand:
1. The three-way valve itself - has a ball valve, rotating around the circular to an unlimited turn. For work, the valve must be rotated clockwise, and counterclock from 90-180 degrees of rotation.
2. The servo drive is an electrical equipment and a device to rotate this ball valve. The valve rotation is opened and closing two passes, and the third pass is constantly open. The servo drive through the thermal sensor brings turn to the desired direction to open or closing the feeding hotline circulation. Read more on video and in passport. We also disassemble how to configure the valve for a specific scheme.
ESBE 99K2 servo, Advantages:

• Power 220 volts
• Electric remote thermal sensor
• Temperature adjustment (15-70 degrees) in real time
• Time Adjustment (1-70Scondition) of the thermal sensor and turning on the rotation.
• Turn adjustment: from 10-180 degrees
• Switching turn clockwise and counterclockwise (reverse)

With 90 degrees, there is a real-time option to install the necessary rotation of the ball valve, for testing (click on the button and scroll). If a rotation is required 180 degrees, the knob is not installed and the adjustment cannot be. Yes, and this is nothing to do, the function is useful only to masters when the mixing node is tested.
Failure: If there is no electricity, the valve does not return to any position, but it freezes the position in which it is automatically exposed.
And in general is used for large objects where you need to do mixing knot With a lot of consumption performance (from 2 cubes per hour and above).

Acquaintance Three-way valve with servo

Connection Three-way valve with servo

Servo adjustment Three-way valve

Passports:

ESBE valves are one of the most reliable and functional components used in various water supply systems, including home and main. It has a very wide range of: swivel VRG131, DN25, as well as other popular varieties.

Currently, a three-way swivel sample of such equipment can be installed in each house. For the same to do it right, let's figure it out in the intricacies of work with such equipment and the features of its use.

Building articles

ESBE valves - technical features of devices

ESBE valves - varieties of devices used to adjust the liquid or gas when it is supplied from one pipe to another. The three-way type of valve is featured by the presence of three compounds that allow you to effectively redirect streams in the system, especially if hot and cold water is mixed.

Adjustment of the valves of this type Within one system can carry out a servo. This device needs to pay a few more attention.

Servo. it separate element In a system that controls the position of the valves. The servo is usually most accessible in procurement and easy to install, therefore it is most often used at.

According to structural features, the servo can be different, most often in the category of such devices. For example, this can be installed with VRG131 samples. They give the highest quality and accuracy in maintaining the system, therefore are so great popular among consumers.

In some devices servo, as well as electric drive adjustment is not used. In such cases, such special devices are used as to adjust the operation of the equipment.

These species include, for example, the DN25 valve, which can be mounted into the tap without a drive.

Overview of the three ESBE valve (video)

Purpose of ESBE valves

This type of product can be used in a wide range of systems, including in heating systems, even centralized, hot, cold water supply, and air conditioning.

These types of valves for various systems are suitable, including working on petroleum products, gas, as well as eco-fuel, including solar energy or wind energy. You can set these types of equipment, for example, the three-way turning valve VRG131, both for central water supply networks and home networks.

You can choose a product for any crane. It is only important to choose the type of product correctly and install it according to the recommendations. Also for normal operation of the system is very important to adjust the servo or thermostatic regulator.

Then the model you chose will work without failures, regardless of the specified technical parameters.

Pros applying for this type of valve

Among the main advantages of the installation of ESBE products should be called:

1. Simplicity in the installation of this type of components, the ability to set samples actually into any system.
2. A wide temperature range of work, especially for models such as VRG131 rotary crane.
3. Universality in application - can be used in networks with different loads.
4. No need for maintenance of such samples with proper installation of such equipment.
5. Ability to use with any ESBE drive having the necessary specifications.
6. Presence in some details of the so-called burn protection functions - Automatic cessation of hot water supply in the event that the cold has ceased to flow into the system.

Popular ESBE Valve Models

Currently, such models are especially popular. valves ESBE.:

• vTA200 equipment is the best crane for all water supply systems. Applicable for systems without recycling hot water, as well as HWCs that have such a function. Do not require special maintenance;
• VTA270 - a model range applicable to installation in "Warm floor" systems. Can be mounted on systems where there is no risk of "burn". Suitable for systems with a rather large area - up to 100 square meters;
• VTA310 - Equipment, like the VRG131 rotary crane, suitable for all water supply systems, in which there are no special requirements for burning burns. Designed for sections with the maximum temperature of the coolant 95 degrees, consider a differential pressure of 0.3 MPa. This type of valve can be mounted in a crane with any type of drive;
• VTA330 / VTA360 - equipment that is installed in systems that do not have additional devices carrying out temperature control. Features of this equipment are that it, as well as a 3-way VRG131 crane, reacts as much as possible to changes in the pressure in the system and allows you to maintain a stable water temperature even with his jumps. This model comes with a special protective lid, unless, of course, the user has not chosen another complete set for itself. Details VTA330 / VTA360 are distinguishable only in the direction of water flows;

• VTC300 - thermostatic mixer. The crane is used to install with boilers with a capacity of up to 30 kW. It is used in cases where the coolant is sufficiently low in the inverse tube of the equipment. There is no need to install a servo to this model - without it, it is also quite normally functioning. The equipment has several installation options and can be easily adapted to the requirements of the system you choose;
• DN25 is another particularly popular valve model. Represents . Apply also to protect boilers Power up to 150kW. The operating temperature of this sample is also 110 degrees. DN25 is completely unpretentious to the installation conditions, its efficiency does not depend on the selected position of the installation;
• model VRG131 - designed directly for use in hot water networks. VRG is released from the alloy of a specialized brass, which significantly increases its life. Can be installed manually. Recommended for the control of this three-way valve to use the servo drive of the same manufacturer.

Three-way mixing valves (cranes, valves) and ESBE drives

The three-way valves of the ESBE are usually used as mixing valves, but can be used as switching or dividing. It is necessary to make sure that the nominal pressure, the pressure drop and the leakage value were within acceptable limits. This information is given to each valve.
Four-way valves are usually used when a high temperature of the coolant on the reverse is required (usually for solid fuel boilers). In systems with two heat sources or accumulation tank, the valves will help organize priority in using an inexpensive heat source, while maintaining good temperature separation in the accumulation tank.
Principle of operation of 3-run valves ESBE VRG130. The required temperature in the system is achieved with the addition of the addition of water from the reverse pipeline supplied to the boiler.

Specifications three-way valves ESBE VRG131, internal thread

vendor code	DN.	KVS.	Compound	A MM.	B mm	C mm.	D mm	E mm	Mass of kg
11600100	15	0,4	RP 1/2 "	36	72	32	50	36	0,4
11600200	15	0,63	RP 1/2 "	36	72	32	50	36	0,4
11600300	15	1	RP 1/2 "	36	72	32	50	36	0,4
11600400	15	1,6	RP 1/2 "	36	72	32	50	36	0,4
11600500	15	2,5	RP 1/2 "	36	72	32	50	36	0,4
11600600	15	4	RP 1/2 "	36	72	32	50	36	0,4
11600700	20	2,5	RP 3/4 "	36	72	32	50	36	0,43
11600800	20	4	RP 3/4 "	36	72	32	50	36	0,43
11600900	20	6,3	RP 3/4 "	36	72	32	50	36	0,43
11601000	25	6,3	RP 1 "	41	82	34	52	41	0,7
11601100	25	10	RP 1 "	41	82	34	52	41	0,7
11601200	32	16	RP 1 1/4 "	47	94	37	55	47	0,95
11603400	40	25	RP 1 1/2 "	53	106	44	60	53	1,68
11603600	50	40	RP 2 "	60	120	46	64	60	2,3

Specifications of three-way valves ESBE VRG132, external thread

vendor code	DN.	KVS.	Compound	A MM.	B mm	C mm.	D mm	E mm	Mass of kg
11601500	15	0,4	G 3/4 "	36	72	32	50	36	0,4
11601600	15	0,63	G 3/4 "	36	72	32	50	36	0,4
11601700	15	1	G 3/4 "	36	72	32	50	36	0,4
11601800	15	1,6	G 3/4 "	36	72	32	50	36	0,4
11601900	15	2,5	G 3/4 "	36	72	32	50	36	0,4
11602000	15	4	G 3/4 "	36	72	32	50	36	0,4
11602100	20	2,5	G 1 "	36	72	32	50	36	0,43
11602200	20	4	G 1 "	36	72	32	50	36	0,43
11602300	20	6,3	G 1 "	36	72	32	50	36	0,43
11602400	25	6,3	G 1 1/4 "	41	82	34	52	41	0,7
11602500	25	10	G 1 1/4 "	41	82	34	52	41	0,7
11602600	32	16	G 1 1/2 "	47	94	37	55	47	0,95
11603500	40	25	G 2 "	53	106	44	60	53	1,69
11603700	50	40	G 2 1/4 "	60	120	46	64	60	2,3

How does the ESBE three-way valve work?

The required temperature in the heating system is provided by proportional to add a colder coolant to a hotter coolant flow from the boiler.

How does the four-step valve work?

The valves of this type have a double mixing function, that is, a hotter coolant is mixed with a cooler coolant serving to the boiler. This allows you to raise the temperature of the coolant in the return on (returning to the boiler) and reduce the risk of low-temperature corrosion, the STR significantly prolongs the operation time of the boiler.

EXAMPLES OF INSTALLATION AND HYDRAULIC CHARACTERISTICS OF MACHINE VALVES ESBE series VRG and 3F

ESBE VRG.

ESBE 3F.

Principle of operation 3, 4, 5 running and bivalent mixing valves ESBE

Advantages of the mixture valves ESBE:

• Easy to install drives.
• Compact size, ease and ease of installation - during installation requires a minimum of tools.
• Minimal dimensions of mixing valves facilitating installation in cramped conditions.
• Reliable valve set with internal thread. The faces for the key wider and has two edges instead of six. It provides the best grip and a smaller risk of sliding a pipe key or a cape wrench.
• More flexible cable connection. Drives are supplied with a connecting cable, as well as with an additional cable contact. The advantage is that it is possible to stretch a separate cable, for example, directly to the circulation pump without connecting via the central controller.
• High control accuracy.
• The minimum delay and high accuracy of the entire cycle, from full closure to the full opening of the valve, the valves provide the ability to use the full angle of rotation. Such adjustment is as close as possible to ideal and ensures improvement of comfort and reduced energy consumption.
• ESBE valves are known for their minimal inner leaks, they are awarded the Prize "The best product of Plumbing Equipment 2003".
• The leakage percentage is reduced from 0.1 to 0.05%. And this is achieved at double pressure, i.e. at 100 kPa (1.0 bar). The valve that provides more dense locking, it is difficult to find and buy in the turbid valve market.
• Easy and convenient regulation, high performance
• Reliable and have a long service life

What is KVS? Each mixing valve has a KVS characteristic (bandwidth M3 / h with a pressure loss of 1 bar). The KVS parameter helps determine which valve is necessary for your heating system. You can define the KVS valve ESBE according to the schedule below.

Select the size of the mixing valve by ESBE

Selection of mixing valves ESBE VRG and VRB series for an outdoor or radiator heating system.
We start from the heat power of the boiler in kW (for example 25 kW). Moving vertically to the selected temperature mode t (for example 15 ° C). Next, we move horizontally to the shaded area (the drop of pressure drop 3-15 kPa) and select the smaller KVS coefficient value (for example 4.0).
In this case, select the desired type of valve with the KVS \u003d 4.0 coefficient

The KVS value is accepted for the flow only in one direction.
For 4-run valves fairly double meaning Pressure Pressure P indicated on the chart.

The materials used, the requirements for the coolant.

VRG, VRB and 5MG series valves are made from a special brass alloy (DZR Dezincification Resistant Brass, CW 602N), which has advantages that cannot be achieved in structures that combine cast cast iron and brass. This allows them to use them for water supply systems with sanitary hot water.
Selective corrosion of brass (Zinc is released from ordinary brass, leaving a fragile, porous copper mass) is the most dangerous type of corrosion, leading to a rapid decrease in the life and reduction of functionality. Coating the inner surface of the valves and valves layer DZR reduces the likelihood of adhesion of pollution and precipitation to valves, which ensures the decline in wear and receipt of more clean water. The alloy also contains less lead, compared with many other products. and especially suitable for installation of water supply water supply systems.
All other ESBE valves can only be used in closed systems With water that does not contain dissolved oxygen.
To protect against freezing, it is allowed to use a coolant with a glycol content and additives, neutralizing dissolved oxygen, a concentration of maximum to 50%. When it adds glycol to water, its viscosity increases and heat capacity changes, so it must be considered when choosing a valve. If the percentage of glycol is 30-50%, then in this case you need to select another valve with a large KV coefficient. Lower glycol content does not affect the valve action.

The specialists of the company "TERMOGOG" Moscow will help you correctly pick up to buy,as well as Mount the ESBE fittings,will find an acceptable solution for the price. Ask any questions you are interested in, advice on the phone is absolutely free, or use the form "Feedback"
You will be satisfied, cooperating with us!