For devices of the separation type, the stem is equipped with two valves mounted in the outlets. It works according to a slightly different schedule. The work of the three-way valve becomes clearer after a detailed analysis of the design. The body of these types of products cast. It is made of brass or bronze plated with chrome-nickel. It performs both protective and decorative functions. There are thread taps for connecting to the pipeline only three. The type of wire connection depends on the selected model. So you can van buom dieu khien khi nen han quoc .
The optimum pressure parameters in the heating system for stable valve action are 10 kg per cm². If this value is exceeded, problems may occur. There are limitations on temperature indicators 95º for boilers, 110º for solar panels. Permissible adjustment of the temperature of the coolant in different models is in the range of 20-60º. Capacity varies from 1.6 to 2.5 m 3 per hour.
Operating principle of the device
By installing a three-way mixing valve, it is possible to ensure that the temperature of the liquid at the outlet is within the established limits. The operating principle for both a closed heating system and the FGP system is the same. The only difference is that in the first case the coolant evenly transfers heat from the source to the radiators, and in the second case it transfers the hot water to household appliances.
Until the temperature-sensitive element reaches a certain temperature, the coolant flows from the front pipe and arrives unhindered to the right. When the operating element reaches a higher temperature than the setpoint, its expansion occurs. This means that the valve is moved vertically downwards and as a result blocks the flow path of the heated cooling fluid from below. Then the left pipe opens for cold liquid.
Mixing the cold liquid with the hot liquid leads to a balance in temperature. The temperature-sensitive element acquires the earlier shape and the flap in the original position. If the three-way valve is installed in the return circuit, the process must take place in reverse order. When the liquid cools down, the way to hot water from the boiler is opened immediately.
Device drive mechanism
Different types of valves can be the type of drive mechanism. The drive can be hydraulic or electromechanical, pneumatic, manual. The electromechanical drive is subdivided into types, the most common of which is simply thermostatic. It functions as a result of the expansion of a liquid with a thermo-active element in its composition. As a result, there is pressure on the bar. This is an easily removable design that is used in products installed in household systems.
The next option is an actuator with a thermostatic head, equipped with a temperature-sensitive element. The device is supplemented with an external temperature sensor that is located directly in the pipeline. It connects the capillary with a drive. This type of adjustment is considered the most accurate. If desired, a simple thermostatic actuator can easily be replaced with a thermostat head.
There is a three-way version of the valve with an electric drive. It is controlled by a controller that is equipped with temperature sensors and that gives commands to the main mechanism. A simplified version of the inverter with the controller is a servo