ESBE valves and actuators. three-way valve working principle esbe three-way valve

Despite the simple design, the esbe three-way valve is one of those elements on which the life support of the whole house directly depends. Devices of this type are commercially available in several varieties.

general information

A three-way valve is a device for adjusting pipeline networks with a liquid working medium. If you explain popularly, after being included in the heating system, the device will perform the function of a well-known mixer tap, the task of which is to switch or mix flows.

Thanks to the esbe three-way valve, the following results are achieved:

1. Redirecting streams from different networks.
2. The working fluid is brought to the required temperature by mixing cold and hot fluids.
3. Dynamic redirection makes it possible to obtain a jet of stable temperature.

Design features of the ESBE three-way valve

The adjustment of the three-way valve is carried out using a stem or ball. In the first case, the adjusting element moves in the vertical direction, in the second - around its axis. This element moves in such a way that a complete blockage of the flow of the working fluid does not occur: it only mixes and redirects. The simplest example of such a device is a conventional crane. Its strong point is its simple design and low cost; weak - the impossibility of obtaining a stable outlet temperature. For all their shortcomings, taps are widely used in underfloor heating systems.

If an electric drive is introduced into the design of a conventional crane, then it will be possible to significantly increase its functionality: the device will be able to regulate the temperature of the liquid medium in automatic mode. The task of simple balancing valves is to adjust the section for the flow of the working flow.

The device works like this:

1. When the handle is turned halfway, the two streams are evenly mixed, which is ensured by the equality of the inlet valves.
2. If the handle is turned all the way, the first valve will be pressed, due to which the liquid flow is completely blocked.

For commercially available models, the turns of the handles may differ slightly, which in no way affects the principle of operation of the devices.

Main varieties

Three-way valves are of three types:

• Hydraulic.
• Electric.
• Pneumatic.

Motorized appliances (eg model ESBE) differ slightly in their principle of operation. An electric appendage acts here like a conventional thermostat: thanks to it, the flows are not only mixed, but also kept at the desired temperature. During a decrease or increase in temperature, the position of the shut-off valves is automatically changed. As a result, the flow cross section increases or decreases. In parallel, there is a change in the cross section at the inlet of the cold flow, which makes it possible to inform the water at the outlet of a stable temperature. At the same time, the three-way esbe valve completely dispenses with human control: the equipment is controlled by automation.

The ESBE valve with electric actuator and thermostat can be successfully used in heating systems and in hot water supply. Strictly speaking, such a valve can be equipped with any type of pipeline, where it is required to mix two liquid streams and maintain a stable temperature. Even the most high-quality and reliable models of a three-way valve with a thermostat have one common drawback for products of this type: the entry points through which fluid enters are very narrowed. As a consequence, this provokes an increase in hydraulic resistance.

These faucets are great for plumbing. ESBE valves are often equipped with underfloor heating, although they use a special connection scheme. Along with the modifications mentioned above, three-way thermostatic valves can be found on sale. Despite the apparent similarity of these devices, their functions differ in many ways. In thermostatic varieties, thermostats with a remote type sensor are used. In addition, the principle of operation here is also different.

Unlike standard models, thermostatic taps control the flow at only one point. The other two inputs are in a permanently open position, with a stable section. When purchasing such a design, it is important to test the second point for narrowness, otherwise the device may experience difficulties due to high hydraulic resistance. If such a defect is found, the problem can be solved by installing a mixing valve in an additional circuit.

ESBE tap connection principle

For the vast majority of commercially available three-way devices, one connection scheme is used. For example, consider installing an esbe three-way valve. It's best to start with the plumbing system, where mixing taps are most common. Valves in this case prevent the formation of backflow. The fact is that cold and hot streams have different pressures, which provokes drops. As a result, reverse flow may occur. Systems with ESBE valves are completely safe in this respect.

In heating systems, only three sections can be equipped with devices of this type:

• Mixers of the "warm floor" system.
• The pipe entering the boiler. Thus, stabilization of the temperature of the coolant in the incoming pipeline is achieved.
• Outlet pipe, to reduce the supply of heated coolant.

mixing unit

The use of the esbe valve for underfloor heating has its own specifics. The location of the mixing unit is an additional circuit. Switching with the manifold is carried out through two points: this allows the inlet coolant to constantly circulate. The inlet flow is opened only when there is a need for additional heat.

The mixing unit is commutated with a valve and a thermostat. You need to understand that a thermostat for a water-heated floor allows you to reduce heating costs. Given the narrowness of all valves at point 2, the pump may be faced with the problem of insufficient flow. To solve the problem, it is necessary to live the second line, which reduces the level of electricity consumption. But such a need does not always arise, because. the cross section of some three-way valves is quite large.

In a situation where the first line has insufficient flow capacity, the thermostat does not block the passage on the required scale.

To get out of this situation, two options are usually used:

1. The second line is narrowing.
2. The balancing valve is installed.

The second method is considered more effective, because. the flow in this case is tuned more precisely. There is another scheme for connecting the esbe three-way valve for underfloor heating - switching the pump to the second line: a balancing valve is not needed here. This allows you to equalize the temperature regime in the inlet and outlet streams.

Installation of a valve with a thermostat can be carried out in single-circuit systems. Their simplest variation is a warm floor of a small area. In this case, the overall mixing unit is not very practical to use. A more appropriate solution would be to connect a single-circuit underfloor heating. The installation of a three-way valve with a thermostat is carried out on a return pipe containing a cooled coolant. Thanks to the thermostat, the shut-off valve is activated, which increases the cross section. When the pipe heats up, the temperature sensor detects this and reduces the flow.

Application of valves for heating boilers

Three-way valves for heating boilers deserve special attention. They perform the task of preventing the cooled coolant from getting inside the pipeline entering the boiler. If this is not done, the pipes will begin to become covered with condensate, and a dangerous temperature difference will occur in the system. This is fraught with deformations of the docking sections, the most harmless consequence of which will be the appearance of small leaks. If you do not respond in time, the system may completely fail.

With particular responsibility, one should take the installation of shut-off valves in the piping of a solid fuel boiler, during which significant temperature differences occur (read also: ""). The mixing valve allows you to protect boiler equipment from the ingress of coolant with a temperature below +50 degrees. In this way, a reduction in the temperature difference is achieved, which has a positive effect on the efficiency and durability of the system.

Experts recommend using mixing valves also in systems with plastic piping. Although polymer communications have a number of advantages, however, the frequent excess of operating temperature parameters affects them destructively. According to the standards, the most comfortable temperature regime is in the range of + 75-85 degrees. Valves protect plastic pipes from many negative consequences. The selection of a device model must be taken responsibly, taking into account the technical characteristics of the engineering network.

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In a wide range of valves used in heating networks, there is one element that is used infrequently. It is similar in shape to a tee, but the internal content differs greatly from the latter. Yes, and its purpose is completely different. This is a three-way valve for heating with a thermostat. The scheme of its installation, as well as the principle of operation will be considered in today's review.

Three-way valve with zone type thermal head

Basically, three-way valves are divided according to the principle of operation. There are three positions here:

• mixing,
• separating,
• switching.

The former mix two coolant streams with different temperatures into one, the latter, on the contrary, divide one stream into two. And still others simply switch the movement of water from one direction (circuit) to another. The first two varieties are similar in appearance to each other, so a diagram is applied to their case, which shows for what purposes the device should be used.

As for the third position, it is easy to distinguish it from the rest. He additionally has a block with which the switch occurs. A valve of this type is usually installed in a double-circuit when it is necessary to redirect the flow from the heating system to and vice versa.

Related article:

The device and principle of operation of the three-way valve in the heating system

So, first of all, let's deal with the device. To make it easier to understand what is inside the valve, you need to consider the photo below, in which the device is shown in section. It consists of three nozzles (two lateral one lower), between which there is a mixing chamber. On the fourth side (upper) is thermal headresponsible for controlling the temperature of the coolant.

Inside the device, from the thermostat there is a spring-loaded rod with two flat round valves. Their diameter corresponds to the diameter of the nozzle seats. Instead, one ball valve can be installed, located inside the mixing chamber between two seats. When pressure is applied to the stem, the valves partially block the flow from the lower branch pipe and open the upper one. All the same only happens in reverse if the stem rises.

But here you need to figure out what laws the stock works under, under the influence of what force it lowers or rises. It's all about the thermostat itself. Inside it is a temperature sensor filled with a special liquid. She is heat sensitive. As soon as the temperature of the coolant begins to rise, the liquid expands and rises through the capillary tube into a special bellows (capacity), which is located in the thermal head. The reservoir itself begins to expand, and thus presses on the stock. The latter descends and opens the lower pipe, from where cold water enters the three-way valve. Hot comes from the left pipe (see photo).

Of course, just like that, with any increase in water temperature, pressure cannot occur. To do this, a temperature gradation is set on the thermal head, which is manually adjusted. It is the set parameter that is the moment the rod is pressed.

So, the stem responded to a change in the temperature of the coolant in the supply pipe, opened the lower one for cold water, and the hot and cold media mixed up to the required temperature inside the valve. That is, it turns out that the temperature of the coolant at the inlet has not changed, but at the outlet it has become less.

In the event that the coolant continues to heat up, the rod may drop to the lowest position. That is, it will completely close the hot water supply and completely open the cold water supply. And this will continue until the coolant inside the heating system drops to the required temperature. After that, the top valve will open, it will start up hot water.

This is how a three-way mixing control valve works. As for the separating model, its principle of operation is almost the same, just the other way around. The coolant enters one pipe, inside the device case it is divided into two flows and exits through two adjacent pipes.

This type of valves is installed in those areas where the coolant flow must be divided into two circuits. One of them will be with a constant thermal regime, the other with a variable one. The first is the fluid flow, which is subject to quality requirements. The second with quantity requirements. At the same time, purely constructively, the flow with a constant hydraulic regime is never blocked, because in the design of the device, the stem length is made in such a way that the valve does not close the constant circuit.

But it must be noted that the length of the stem can be adjusted. This makes it possible to adjust the required volume of coolant on a constant circuit. As for the variable, it can completely overlap. This is how the flow and pressure of the coolant in the heating system is regulated. As you can see, the principle of operation of a three-way valve is quite simple. The main thing is to accurately select the type of device and install it in the required place in the circuit.

How does a three-way thermostatic valve work in a "warm floor" system

To make it clear how the valve circuit works, we can give an example of coolant circulation in the underfloor heating system. The three-way valve for underfloor heating is a mixing valve. The circulation scheme here is as follows:

• hot water through the collector enters the floor heating system;
• it must have a certain temperature, which is monitored precisely in the process of passing through a three-way valve;
• as soon as its value exceeds the permissible value, the valve opens one of the circuits, which is connected to the heating return;
• cooled coolant enters inside, lowering the temperature,
• after which the mixed water enters the heating circuit of the warm floor;
• as soon as the temperature drops to the required one, the return circuit is blocked inside the valve by the stem.

Three-way valves with actuators

Experts say that adjusting a three-way valve using a thermal head and a sensor is the simplest and most accurate. In addition, it does not consume electricity. That is why this type of three-way valve is popular today. But the process can be controlled in other ways. The simplest one is manual. Let's face it, this is not the most accurate option, because the range of the stem immersion depth is set by the handle located outside the valve body.

Attention! A valve with such an adjustment is recommended to be used only in those heating systems where the temperature drops of the coolant are insignificant.

The second option is to control the temperature regime with the help of electric drives. They receive commands from the controller.

Motorized 3-way valve

Valve-mounted motors are often referred to as servo motors. In fact, these are ordinary electric motors in which the shaft does not spin, but rotates by a certain degree. It should be noted that this category includes any types of engines, for example, thermal ones. The main thing is to fulfill the condition of rotation, not rotation.

Manufacturers today offer two positions regarding equipment. The first is a complete package that includes a controller and a temperature sensor. It is possible to immediately set the device to the required temperature, as well as to the angle of rotation, for example, from 0 to 180 °. In this case, any intermediate values ​​are possible. The second is a separate drive with a sensor inside, to which the controller must be added as a separate element.

As for the controller, this is a device that solves the problems of signal management. In the case of heating, it reacts to temperature changes that are signaled to it by a temperature sensor. It processes the signals and decides what to do - open the valve or close it, or rather, turn it clockwise or counterclockwise. Today, manufacturers offer a huge model line of three-way electric valves. One of the most popular brands is ESBE (Sweden).

Three-way valve ESBE with electric actuator

First of all, it must be indicated that this brand of valves has a ball with through slots inside. The latter open or close two channels, the third always remains open. Through it, the coolant enters the heating system. Degree of rotation - 90÷180°.

In stores, the valve of this model is sold separately from the servo drive, therefore, before installation, they are interconnected by inserting the axis (shaft) of the drive into the upper part of the stem. It has a hole for the axle. After that, it is necessary, exactly according to the instructions attached to the device, to carry out the adjustment in terms of temperature conditions.

Today, the manufacturer offers a fairly wide range of ESBE three-way valves with and without an actuator:

A photo	Model	Purpose
	VTA 200	Designed for systems where there is no water recirculation.
	VTA 270	This is a thermostatic valve for underfloor heating. It is installed if heating is organized in a room with an area of ​​at least 100 m²
	VTA 310	Valve for general use in any heating systems, where the temperature of the coolant does not exceed +95°C and the pressure is 0.3 atm.
	VTA 300/VTA 360	The two models differ from each other only in the direction of water movement in the heating system. They control the temperature well even with pressure surges inside the network.
	VTC300	This is a 3-way valve without servo. It can be installed in systems that use low-power boilers - up to 30 kW.
	DN25	This is a three-way valve for solid fuel boilers. That is, it can withstand coolant temperatures up to + 110 ° C. In this case, the power of the boilers should not be less than 150 kW. This is one of the most unpretentious devices of all present on the market. It can work under any conditions in any heating networks without changing the quality.
	VRG131	This is the most popular and sought-after device that is used in apartments and private houses.

Other models of three-way valves

Another well-known brand is the Navien three-way valve from a South Korean company. It should be noted that this device is an integral part of the double-circuit boiler of this manufacturer. And it is installed inside the heating equipment. Its main purpose is to separate the coolant for supply to the heating network and for hot water supply.

Attention! Navien valves are beyond repair. The main cause of failure is the gear transmission from the motor to the rod. Spare parts are not sold anywhere. In case of failure, the device must be replaced with a new one.

The Danish company Danfoss is a well-known manufacturer of three-way valves. It offers four models that are designed for different systems:

A photo	Model	Purpose
	VF3	Used in air conditioning and heating systems. Production material - cast iron. With flange connection.
	VMV	It is used only in heating systems. Production material - bronze or stainless steel.
	VRB3	This is a mixer that is used both in heating systems and in refrigeration installations. Material - stainless steel.
	VRG3	It is installed in heating networks or when transporting refrigerant. The material is either stainless steel or cast iron.

Schemes for connecting a three-way valve to the heating network

After all the analysis regarding the design of the valve and its principle of operation, an understanding appeared of how it can be used in various heating systems. Most often it is used in three cases.

• In the system of warm floors, the temperature of the heat carrier must be within + 45 ° C. It is this mode that is supported by the device. This has already been discussed above, and it has been shown how it should work.
• To protect against the formation of condensate inside the furnace. This happens when relatively cold water returns to the generator heat exchanger. From this, water droplets from condensed steam form on the outer surfaces. This must not be allowed, because condensate shortens the life of the equipment.
• If there is a need to maintain different temperature conditions in different parts of the heating system.

The first option will not be considered, because it has already been described. As for the second case, it is necessary to take the photo below as the basis for the analysis.

There is a double circuit in the diagram: one large one passes through the radiators, the second - a short one through (this is a vertical red line, the beginning of which is at the top to the radiators, the end rests at the bottom of the valve). Until the boiler is warmed up, the coolant moves along a short circuit. The temperature has risen to the required level, the valve closes the bypass and opens the return (lower blue line).

And the third position, which is based on the distribution of the coolant among consumers, in which the required temperature is not always the same. For example, an indirect heating boiler requires water with a higher temperature, for batteries with a lower one, and even less for underfloor heating.

Attention! In such a scheme, there is no need to install control valves in front of the boiler.

The wiring diagram with the installation of a three-way valve should be approximately the same as shown in the photo below.

Three-way valves for heating with a fixed heating medium temperature

This is the so-called budget option. At a price it is cheaper than 30-35% of devices with drives. How is he different from everyone else. In its design there are no rods, no sensors, no thermal heads. A so-called thermostatic element is installed inside, which is set to a certain temperature of the coolant. For example, it can be either +45°С or +65°С. That is, the indicator can be any, depending on the requirements of the consumer of hot water.

The element is selected at the factory and installed there, so the valve must indicate what outlet temperature will be after it. For example, if you need a valve for underfloor heating, then choose with a temperature of + 45 ° C. The positive side of these devices is their cheapness. Negative - the inability to adjust the temperature of the water.

Attention! If a valve of this type is installed on the bypass of a solid fuel boiler, then it is necessary to study the passport of the generator itself before buying. The main indicator for the valve is the temperature of the water in the return circuit. It is for her that the device is selected.

Esbe products are quite popular today. is no exception. It is one of the many elements that are included in residential buildings.

The need to use

This design, on the one hand, is quite simple, but on the other hand, it is designed to perform an extremely important task, being part of engineering networks. Everyone knows the rule that demand creates supply, which is why on the market today you can find many models that are represented by various manufacturers. However, valves manufactured by Esbe are distinguished by excellent performance. A three-way valve of this type can be purchased at an affordable cost. This is confirmed by user reviews.

Design features

In a wide range today you can find Esbe products. The three-way valve is no exception. This element has a regulating component, which is a ball or a rod. The latter moves vertically, but as for the ball, its movement occurs around its axis. Due to the fact that the movements of the regulating element do not allow to block the flow of liquid, distribution and mixing occurs. The most common and simple models are cranes.

Main plus

Their main advantage is low cost and simplicity. However, if you need to adjust the Esbe three-way valve, then you should exclude the purchase of simple devices, since they have the main drawback, expressed in the inability to stabilize the outlet temperature.

Carrying out installation work

Almost all described valves that are on the market are connected on the basis of one scheme. Most often, mixer taps are used in water supply systems. Their main goal is to reduce the risk of backflow. Between the streams of cold and hot water, a pressure difference will inevitably occur. It can cause reverse flow. If you install a valve, then you will not encounter such a problem. If we are talking about a heating system, then such devices are used exclusively in three directions, namely, to stabilize the temperature regime of the coolant flow in the incoming pipeline of boiler equipment, to reduce the supply of high-temperature water from the heating device to the pipeline, as well as in the conditions of mixing units of systems underfloor heating.

Connection in the mixing unit

If you are interested in Esbe products, the three-way valve can be purchased from any relevant store. One has only to consider before that how the tap is used in the underfloor heating system. Application allows you to create an additional circuit in the system. With two points it connects to this allows for a constant circulation of water at the outlet. As for the inlet, the flow is provided only if there is a need to obtain additional heat. The thermostatic valve is connected to the mixing unit. Due to the fact that all valves are at the point, they are narrowed, which can cause insufficient flow of pumping equipment. To increase it, it is necessary to create an additional line, with which you can reduce the electricity consumption of the pump. During the installation process, it is worth remembering that a second line is not always required. A number of valve models have a fairly large passage. An Esbe three-way valve, whose connection diagram can be designed based on the instructions presented in the article, may suggest insufficient flow capacity in the first line. In this case, the thermostat is not able to open the passage of the required size. This issue can be easily solved in two ways: the first involves narrowing the second line, while the other option is to mount on it. The latter option is considered more productive, as it allows you to adjust the flow.

Alternative installation option

Installation of the Esbe three-way valve can also be done by another method. It does not involve the use of a balancing crane. The pump is connected to the second line, eventually the temperature of the outlet and inlet flows equalize. A thermostatic valve is found in single circuit systems. The simplest example of such systems is underfloor heating in small rooms. In this case, it is not always justified to create a mixing unit with large dimensions. It is best to connect the underfloor heating system using one circuit. If you are thinking about how to connect an Esbe three-way valve with an electric drive, then it can be placed on the return line, through which cooled water runs. In this case, the thermostat will lead to the movement of the valves, the cross section will be increased, and the flow will be open. As soon as the pipe is heated, the thermal sensor will detect this and reduce the flow.

Installation of a valve for a heating boiler

This issue, according to professionals, must be considered separately. The main task of the installation is to prevent the entry of a cold water flow to the incoming pipeline, which is connected to the heating equipment. If this requirement is not taken into account, then condensation will occur on the pipes, temperature drops will lead to deformation at the joints. If we talk about the consequences of deformation, then at best you will encounter a small leak, while at worst the system will need to be completely changed. In order to avoid the need to repair the Esbe three-way valve, it is important to connect the shut-off valves to the boiler, which is characterized by temperature changes during operation. If you install a mixing valve, then you can ensure that water does not enter the inlet of the equipment, the temperature of which is below 50 degrees. The temperature difference is significantly reduced, the negative impact of cold is reduced. Experts advise supplementing systems that are equipped with plastic pipelines with mixing valves. In this case, the task is to prevent the ingress of high temperature water into the pipeline. While polymers have many advantages, they do not cope well with frequent temperature changes, which can be higher than operating temperatures.

Under the influence of such conditions, the pipeline system fails soon enough. Experts advise choosing Esbe products. The three-way valve, the installation instructions for which are presented in the article, has been manufactured by this company for a long time. If you use this element, then you can provide temperature readings ranging from 75 to 85 degrees, which are recommended by experts. Mounting the valve allows you to cope with many problems, however, the model must be selected in accordance with the characteristics of the network, and also have a sufficiently large passage.

Adjustment Features

When purchasing Esbe products - a three-way valve, the installation and adjustment instructions for which are presented in the article - you must remember that with this device it is possible to mix the cooled water from the return into the supply. For high-quality regulation, not only a three-way valve is installed in the system, but also a four-way valve, which must be present in the heating system. It is located directly in front of the contour of the warm floor. The handle allows you to open the bypass, while the circulation pumps and equipment draw in the cooled coolant from the return, where it is mixed with hot water. In order for the adjustment to be made as efficiently as possible, you should understand what happens at certain positions of the handle. The latter can be set to the bypass overlap position, while the hot coolant will flow into the pipe of the underfloor heating system. As for the mode in which the supply is blocked, water enters the tank and runs in a small circle. The third position allows you to feed the supply from the return system without blocking the full cycle of water passage throughout the circuit.

Conclusion

Recently, experts have increasingly recommended purchasing Esbe brand products. A three-way valve, the instruction, the wiring diagram of which is presented in the article, is just an example of this. It can act as an indispensable element of the heating system and part of the boiler equipment, however, it is important to choose the right model and install it, observing the technology.

Esbe valves are one of the most reliable and functional components used in various water supply systems, including domestic and main ones. It has a very wide range, which includes: rotary vrg131, dn25, as well as other popular varieties.

Currently, a three-way rotary sample of such equipment can be installed in every home. In order to do it right, let's look at the intricacies of working with such equipment and the features of its use.

Article content

Esbe valves - technical features of devices

Esbe valves are a variety of devices used to control a liquid or gas when it is supplied from one pipe to another. The three-way type of valves is distinguished by the presence of three connections that allow you to effectively redirect the flows in the system, especially in the case of mixing hot and cold water.

Adjusting the operation of valves of this type within the same system can realize the servo. This device needs a little more attention.

Servo. This is a separate element in the system that controls the position of the valves. The servo drive is usually the most affordable and easy to install, which is why it is most often used for.

According to the design features, the servo drive can be different, most often the category of such devices includes. For example, this can be installed with vrg131 samples. Today they provide the highest quality and accuracy in system maintenance, which is why they are so popular among consumers.

In some devices, a servo drive, as well as motor control is not used. In such cases, such special devices are used as for adjusting the operation of the equipment.

Such varieties include, for example, a dn25 valve, which can be mounted in a crane without a drive.

Esbe three-way valve overview (video)

Appointment of Esbe valves

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

These types of valves are suitable for various systems, including those operating on oil products, gas, as well as eco-fuels, including solar energy or wind energy. It is possible to install these types of equipment, for example, a three-way rotary valve vrg131, both for central water supply networks and for home networks.

You can pick up a product for any crane. It is only important to choose the right type of product and install it according to the recommendations. Also, for the system to work properly, it is very important to adjust the servomotor or thermostatic controller.

Then the model chosen by you will work without failures, irrespective of the set technical parameters.

Advantages of using this type of valves

Among the main advantages of installing exactly Esbe products are:

1. Ease of installation of this type of components, the ability to install samples in virtually any system.
2. Wide operating temperature range, especially for models such as the vrg131 swivel crane.
3. Versatility in use - can be used in networks with different loads.
4. No need for maintenance of such samples with the correct installation of such equipment.
5. Can be used with any Esbe drive that has the required specifications.
6. The presence in some details of the so-called burn protection functions- automatic shutdown of hot water supply in the event that cold water has ceased to flow into the system.

Popular models of Esbe valves

Currently, the following models of Esbe valves are especially popular on sale:

• VTA200 equipment is the best faucet for all water supply systems. Applicable for systems without hot water recirculation, as well as HWC with this function. Does not require special maintenance;
• VTA270 is a model range suitable for installation in underfloor heating systems. They can be mounted in systems where there is no risk of “burning”. Suitable for systems with a fairly large area - up to 100 square meters;
• VTA310 is an equipment, like the vrg131 swivel tap, suitable for all water supply systems where there are no special requirements for protection against burns. Designed for areas with a maximum coolant temperature of 95 degrees, withstand 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 that carry out temperature control. The features of this equipment are that, like the 3-way valve vrg131, it reacts as sensitively as possible to changes in pressure in the system and allows you to maintain a stable water temperature even during its jumps. This model comes with a special protective cover, unless, of course, the user has chosen a different package. Parts of the VTA330/VTA360 are only distinguishable by the direction of the water flow;

• VTC300 is a thermostatic mixer. The crane is used for installation with boilers up to 30 kW. It is used in cases where a coolant of a sufficiently low temperature enters through the return pipe of the equipment. There is no need to install a servo drive for this model - without it, it also functions quite normally. The equipment has several installation options and can be easily adapted to the requirements of your chosen system;
• DN25 is another particularly popular valve model. Represents . Can also be used to protect boilers power up to 150 kW. The working temperature of this sample is also 110 degrees. DN25 is completely unpretentious to the installation conditions, its efficiency does not depend on the chosen installation position;
• model vrg131 - designed specifically for use in hot water networks. Released vrg from a specialized brass alloy, which significantly increases its service life. Can be set manually. It is recommended to use a servomotor from the same manufacturer to control this three-way valve.

The Swedish company ESBE (Esby) has been a recognized leader in the field of water heating and cooling control systems for many years. ESBE three-way mixing valves VRG 131 and 3F series, as well as ESBE ARA and 90 series electric actuators are an example of excellent quality and reliability at an affordable price. Esbe's wide range of mixing valves allows you to make the best choice depending on the requirements of the system. High quality brass alloys or cast iron are used as materials. The valves are available with threaded or flanged connections.

Flanged mixing valves Esbe 3F, 4F ESBE 3F, 4F flanged mixing valves are made of cast iron and are widely used in heating and cooling systems. Esbe 3F valves can be used in closed systems with water free of dissolved oxygen. When the Esbe 3F, 4F valve is operating, the hotter coolant is mixed with the cold one entering the boiler, which ensures an increase in the temperature of the coolant returning to the boiler. This reduces the risk of low temperature corrosion. The valves are manufactured in sizes DN 32-150. Flange connections, body - cast iron, spool - brass, seal - EPDM, T=-10C...110C. Pmax=6 bar

Electric actuators, Esbe ARA 600 actuators for three-way mixing valves. Esbe ARA 600 actuators are designed to automate the control of valves of the VRG, VRB, MG, G, F series< DN50. Выпускаются для 24В и 230 В (частота 50 Гц). Некоторые виды клапанов и приводов сконструированы таким образом, что между ними образуется специальное соединение «клапан – привод», образующее устройство с уникальными характеристиками точности и устойчивости. Диапазон действия приводов составляет от 90°. Разные модели предусматривают разное время закрывания, в среднем от 15 до 240 секунд. Надёжность, экономичность и комфорт в использовании – главные принципы, которыми руководствуются специалисты компании Esbe при разработке сервоприводов Esbe ARA.

Electric actuators, Esbe series 90 actuators. Esbe series 90 compact reversing actuators are designed to control Esbe control valves of sizes DN 15-150, torque 5-15 Nm. These servo drives are supplied in three versions depending on the type of control signal: 2-point, 3-point or proportional, equipped with limit switches in the extreme positions and have the ability to adjust the operating angle in the range of 30–180°. The Esbe 90 electric actuator allows you to control the valve in manual mode, while the position is displayed on the indicator disk. This series is available with both 24V and 230V power supply and different opening times. Esbe Series 90 actuators work effectively with VRG100, VRG200, VRG300, VRB100, F, MG, G, BIV and H series valves.

Esbe controllers of the CRB, CRA, 90C, CUA series. The modern Esbe controllers of the CRB, CRA, 90C and CUA series have been designed to provide a higher level of comfort and energy savings. The CRA series includes combined drives and constant temperature controllers with the ability to control the temperature from 5 to 95°C. CRB controllers with built-in actuator and user-friendly interface consist of an actuator and a display with a room temperature sensor, based on which the adjustment is made. ESBE CRB and CRA controllers are used with the following valve series: VRG100, VRG200, VRG300, VRB100, G, BIV, H and HG, F<=DN40, Для клапанов серии F предназначены контроллеры CRA120, CRB 120.

Esbe thermostatic mixing valves VTA320, VTA370, VTA570 Esbe thermostatic valves of the basic series VTA 320, VTA 370 have a high flow capacity and have increased functionality. Depending on the model, they can be used in domestic hot water and underfloor heating systems. The main functions of these valves are asymmetric flow direction and scald protection. The scalding protection is based on the automatic interruption of the hot water supply when the cold water supply is interrupted. Coupling, valve body - DZR brass, spool - brass, EPDM seal, PN=10, coolant temperature max. 95C.

2-way control valve series VLA121

3-way control valve series VLA131

2-way control valve series VLE122

3-way control valve series VLE132

VLA325 series 2-way control valve

VLB325 series 2-way control valve

3-way control valve series VLA335

3-way control valve VLB335 series

	ESBE VLC125 seated control valves ESBE VLC125 2-way flanged control valves are used to control the flow of heating medium. The valves are made of ductile iron, which allows their use in heating and cooling systems with pressures up to 25 bar. The VLC125 series has flanged connections and is available in sizes DN15-DN50. The valves are designed for automatic operation in combination with ESBE actuators.
VLC125-40-16	21302600	40	16	20	7.7
VLC125-40-25 price >>	21301100	40	25	20	8.8
VLC125-50-38 price >>	21301200	50	38	20	12.6

	Electric actuators for ESBE poppet control valves Linear actuator series ESBE in 230 V or 24 V version, with analog or pulse control. The actuators have different forces and are adapted to valves with different strokes. A separate line of actuators with a return spring is also presented. Depending on the model, valves equipped with such actuators can be normally closed or normally open. ALD121 22150500AC/DC 24 V	2200	20 sec.	ALD144 22151200
ALH134 price >>	22220100	3-position/0...10 V	AC/DC 24 V	900	15 sec.	-
ALH234 price >>	22221100	3-position/0...10 V	AC/DC 24 V	900	15 sec.	-

Three way mixing valve has a fairly simple device. It consists of a housing with two inlets and one outlet, as well as a specially shaped stem, on which a handle (for manual control) or an electric drive (for automatic flow temperature control) is installed. The rod is able to rotate along the vertical axis, blocking to some extent the inlet of hot or cold water, due to which a certain ratio of flows is created and, as a result, a mixture of a given temperature is obtained at the outlet. The body material of a three-way valve is most often brass alloy or cast iron. The stem is made of brass, cast iron or stainless steel.

Three way valve control is carried out with the help of an electric drive installed on the rod, which is supplied separately. The main characteristics of electric actuators are: the time of rotation of the rod by 90 degrees; the force with which the actuator is able to rotate the stem; electrical voltage and control signal (two-point, three-point, proportional). The electric drive receives a signal from the common house controller, which, based on the readings of various temperature sensors, calculates the position of the three-way valve stem to obtain the desired temperature of the coolant at the outlet.

Selecting an actuator for a rotary three-way mixing valve. For sleeve mixing valves ESBE actuators of the ARA600 series are used, for flanged cast iron valves the ESBE 90 series is used. If as a mixer, then 3-point control or proportional control is necessary: ​​0-10V signal. Next, select the desired combination of stem rotation time and valve assignment. 60 seconds will be enough for domestic hot water supply, and for supplying coolant to radiators, most often, electric drives with a stem rotation time of 120 seconds are used. If it is necessary to control external equipment depending on the position of the valve (for example, turn off an unnecessary pump, etc.), we determine whether an auxiliary switch is needed. When all the technical characteristics of the electric drive are determined, it will not be difficult to choose from the presented models exactly the one that will perform all the specified functions.