Balancing valves for heating system: purpose, installation location

The heating system will not operate correctly without an appropriate setting, which can be implemented in one way or another. This is required for the network parameters on each separate section to be as close as possible to the calculated ones. If you make the right adjustment, you will be able to get high efficiency of the system. To date, there are several ways that help to make adjustments, however, the most modern are the balancing valves for the heating system.

Appointment

As mentioned above, any heating system requires a hydraulic adjustment, which is also called balancing. The purpose of this operation is to adjust the water flow to the calculated value in each branch of the circuit. This will deliver a certain amount of heat to the batteries.

If you are interested in balancing valves for a heating system, it is important to take into account that before setting it is necessary to learn more about the estimated flow rate of the coolant for each individual section. When it comes to the simplest system, the flow is provided by properly selected pipes, which must have a certain diameter. If the house is equipped with a more complex system, the adjustment of its work is done with the help of special washers. They have such a size of passage, which will ensure the flow of water in the right amount.

The above methods are considered obsolete. Today, modern methods are used - balancing valves for the heating system. Structurally, such devices are represented by manual valves, through which the volume flow of water is controlled. In addition to the flow overlapping mechanism, fittings in the amount of 2 pieces are built into the chassis. They are necessary to connect the capillary tube, as well as the interaction of this element with other control nodes. Fittings are also required to measure the pressure before and after the adjustment mechanism.

What else do you need to know about the appointment?

Determining the pressure in each choke, the value of the difference in the regulator is measured. After proceeding from the received data it is possible to learn, what the water discharge on a site. The valve is supplied with an instruction where it is possible to find a graph by which the number of revolutions of the handle is determined for the required coolant flow.

For reference

On sale it is possible to find balancing valves for the heating system of certain brands. They can be used in tandem with devices of the same brand, which allows you to obtain data on a specific volume of flowing water. This simplifies the process, and the user does not have to do additional calculations. However, such equipment will have to be spent additionally.

Variety of valves by purpose

Considering the described devices, they can be divided into automatic regulators and manual valves. In the first case, two devices are supplied, namely a balancing valve, as well as a regulator responsible for the differential pressure. These nodes are connected with each other by means of a capillary tube.

The location of the valve

If you are thinking about how to set up a heating system for balancing valves, then follow the recommendations that are presented by the manufacturers. Tips can be found in the instruction manual and the instruction manual. Before starting the installation work, it is necessary to familiarize yourself with where the installation will be made. In order to guarantee the maximum accuracy of measurements before and after the device, the pipe sections should be as flat as possible, they must be avoided from bends. Their length will depend on the diameter of the material used.

Prior to the arrangement of the valve, the length of the straight pipe must be equal to 5 pipe diameters, after the device the length of the pipeline will be 2 diameters, but not less. Before installing the balancing valves for the heating system, the place is important to choose correctly. If we neglect the rule described above, the error in the measurements can range from 15 to 20%.

Location of the valve

If the device is placed after the circulation pump, then the step of the straight section from the equipment to the valve must be 10 diameters of the pipeline used. The valve should be in a place where it will be convenient to disassemble, adjust and operate it. The first of the described manipulations may be necessary in case of equipment failure. The coolant must be directed in the direction indicated by the arrow on the body of the device.

The balancing valve for the Danfoss heating system can be arranged both vertically and horizontally, however, it is necessary to follow the instructions given in the instructions. During assembly work, it is important to avoid contact of the appliance body with foreign objects. The device must not be subjected to pressure, compression, stretching and torsion. The impact should not be not only permanent, but also temporary.

The purpose of the balancing valve in the heating system was described above. From it follows the principle of the device, which involves the passage of a large amount of water through the device. In order to avoid clogging and failure of the valve, a strainer must be installed in front of it . Otherwise, the device will require a replacement within a short time.

Designation of Danfoss balancing valves

Automatic valves series ASV are used to maintain a certain pressure between the return and supply pipelines of the regulated systems. Appliances are used in heat and cold supply with varying flow rates of water passing through them in the range up to 100%. The regulation is made by a valve mounted on the return line. The balancing valves for the Danfoss heating system of the ASV-P series have a fixed setting of 10 kPa. On sale it is possible to find valves ASV-PV with adjustable adjustment from 5-25 kPa.

If we are talking about the ASV-PV Plus series, then they are characterized by a limit of 20 to 40 kPa. Selection of a pulse of more impressive pressure is possible on the pulse tube from another valve, which acts as a so-called partner. It is installed on the supply line. These valves are series ASV-M or ASV-I, with their help you can limit the flow of water being moved.

The purpose of the Danfoss hand valve

Manual valves of this manufacturer are devices that have a valve design with a fixation of the setting position for a certain throughput. As a rule, they are used to set up a pipeline network, but are installed instead of throttling diaphragms, which are called washers, where there are no regulating automatic devices, or regulators do not allow to limit the calculated water flow.

Conclusion

On sale, you can also find combined AB-QM valves from Danfoss, which are responsible for stabilizing the flow. The main areas of use are stabilization and flow limitation in systems with constant hydraulic parameters, as for single-tube risers or cold water systems.