Three-way valve for solid fuel boiler: principle of operation

In the process of designing heating systems of impressive length it is necessary to take into account the main minus, which is the possibility of uneven heat distribution. This is explained by the fact that during the passage through a long pipeline the heat carrier loses heat. In order to solve this problem, you can use a rather complex system in which the main role is assigned to a three-way valve for a solid fuel boiler. The function of this device is to switch the heat flow.

Principle of operation

If you are interested in a three-way valve for a solid fuel boiler, you should become more familiar with the principle of its operation. This device acts as a kind of tee, which with the help of the shut-off mechanism works on the distribution of water in the heating system.

There are devices that operate in alternating and constant modes of hydraulic pressure. If we are talking about a constant hydraulic pressure, then the consumer receives a coolant of a certain temperature in a certain volume. In the case of variable mode, the temperature of the coolant does not play a significant role, since the volume of the liquid is important here.

A three-way valve for a solid fuel boiler has a special element that the stem protrudes. It does not block the flow of the coolant with a certain hydraulic pressure, but it manages when it becomes necessary to close the flow of water, where the hydraulic pressure is variable in the parameters. This element allows you to adjust the flow rate of the coolant and the intensity of the head.

The main features of the valves

In order for the three-way valve for the solid fuel boiler to properly perform its main tasks, a cold and hot water pipeline system is connected to it simultaneously. Important information is that in some cases the connection diagram is an arrow that indicates the direction of water movement. At the same time, warm water serves as a coolant, which moves from gas or solid fuel equipment, but cooled water is considered a return.

In a three-way valve for a solid fuel boiler, both a hot and a cold heat carrier are simultaneously fed, at this point the water is mixed, and at the outlet its temperature acquires an average value. This becomes possible only with a partially open valve. If the device is completely open, the coolant enters the heating system from the equipment, which ensures the maximum possible heating of the heating devices, for example radiators. If the valve is closed, the battery will only receive cold water, which is considered a return flow.

What else you need to know about the functioning of valves

In some cases, the three-way thermostatic valve for a solid fuel boiler is replaced by two separate devices, they are called a two-way valve. At the same time, work is carried out according to a certain principle, which consists in the fact that when the crane is opened, the second one closes.

The main types of valves of the three-way type and the features of their operation

Very common is the device described in the article, which is used in tandem with boilers. On sale you can find such units represented by two varieties. The first is separating, while the second is the mixing valve. The first version of the device is used when there is a need to direct the flow of water from one pipe to another. For this, it is customary to use a ball fitting. In such models it is difficult to make a smooth adjustment due to the design features of the locking mechanism.

The mixing three-way valve for the solid-fuel boiler "Hertz" has certain differences. They consist in the fact that the separator has two valves, as well as a stem. An alternative mixing unit has one stem and one valve. The element is located in the center of the device and is designed to cover the main flow of the coolant flow.

In the separating device, the valves are in the outlets. At a time when one of them opens the flow of water, the second closes it. In the role of an example is an ordinary mixer, which is part of a dispenser in a bathroom or kitchen.

By the way of control these units can be divided into devices with electric and manual control. The electromechanical device ensures the movement of the valve of the control valve when, during use, only the necessary channels for supplying liquid or gas are opened.

Advice of a specialist

To solve household tasks, the most often used manual control option. A three-way mixing valve for a solid fuel boiler serves as a heat regulator for floors and rooms, as well as for separate buildings. He is responsible for the work of the warm floor. Without this device can not do, if there is a need for heating individual rooms. In this case, we are talking about a greenhouse or a residential building, as well as a winter garden.

For reference

Regardless of the type, the described device provides a constant flow of water, which is accompanied by the movement of matter, at the expense of the latter and heat is transferred. This is actual in the winter, when the temperature inside the system changes sufficiently. Thus, when using a similar valve in gas or solid fuel equipment, the system does not defrost.

Recommendations for selection

If you decide to purchase and install a three-way valve for a solid fuel boiler yourself, then you should familiarize yourself with the features of the choice and some technical characteristics. Among them, one can single out the diameter of the connection to the pipeline system and equipment, it can vary from 20 to 40 millimeters. If you can not find the required diameter, then you can use special adapters.

It is also important to take into account the throughput that determines the volume of fluid passing through the pipe in a certain amount of time. By purchasing a three-way valve for a solid fuel boiler, the principle of operation of which has been described above, it is advisable for specialists to consider the possibility of mounting a servo drive, it is required for the valve to function in an automatic mode. This is extremely important when installing a warm water floor system.

Additional selection criteria

Before you buy a three-way thermostatic mixing valve for solid fuel boilers, you need to find out the type of drive. It will depend on the scheme of the piping of heating equipment. In the simplest connection schemes, it is the thermostatic device that is used, the strapping of the installation with the thermal accumulator assumes the beginning of the heating of the water only when the boiler heats up to a certain temperature. As soon as the coolant acquires the set temperature, the valve set for a certain operating mode opens the flow of cold water. In this case, the hot one enters the capacity of the thermal battery, replacing the cold water. If you use a more complex strapping scheme, it will involve the use of a boiler with a valve that is controlled by external monitoring. There are used cranes with two types of drives, they work in two circuits of water circulation.

One of them is installed directly near the heat source, it operates according to the principle that was considered above. If it is a question of the second, then it has an electric drive and is controlled by the controller, which depends on the information that comes from the sensors. In this case, the operation of the valve is aimed at maintaining a certain level of the water temperature in the circuit.

Devices with an electric drive are sometimes used in the primary circuit, but in this case two or several plants must be operated in the boiler room, which are controlled by one controller.

Conclusion

It is important to take into account another criterion, which is relevant for the selection of three-way valves. It is expressed in the range of temperatures used. In this case, we are talking about devices with a thermostatic drive, which are also used in systems of warm floors, as well as in boiler piping.