One of the primary uses of thermostatic expansion valve is adjusting the temperature in a residential building or room. For correct use this unit must be installed on the heating radiator in the room in which it is important to maintain the desired temperature.
Selecting this device, it is important to consider these three parameters as:
If to speak in more detail about each of these selection criteria, it is always worth starting with a definition of the device. On this basis, products can also be divided into several groups:
It is Important to say that the valves are divided into several groups not only by those systems with which they work. Different groups of these products differ such a thing as thermocouple and the working fluid. If we talk about the content, the device can run on gas, liquid or wax. Gas types considered to be most superior, the fluid occupies the middle niche, and the worst in its characteristics of steel thermocouples working with paraffin.
Also there are minor differences and the method of adjustment of the fuser. Just distinguish between two categories of the adjustment element. The first category refers to those devices that are setup on the shared medium settings experts in manufacturing. Call it pre-configured item. Expansion valve open adjustment is the second category, a feature of which is that an alignment of the fuser, each user can own.
After the selection process was defined the device, you can proceed to the selection of its technical parameters. Expansion valve shall provide the following parameters:
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It is Logical that the cost of the product is formed not only of those characteristics which were listed above. This parameter also varies depending on what the manufacturer has released one or the other valve. Currently, there are a few companies whose products are considered the best on the market:
To Carry out installation of this product best adhering to the following guidelines:
Connect thermostatic radiator valve may, following this scheme:
It is Worth noting that if you have the necessary knowledge and skills to carry out the installation on their own.
Expansion valve Danfoss has its own constructive and other features from other valves. In terms of design, this device includes a thermostat which is separated from the valve membrane. Besides, one of the important elements of these valves is a spring. She is in the process of regulation of overheating.
If to speak about products of the company Eagle, you can select the next controller. Thermostatic radiator valve Eagle 302-1608. Has an internal and external thread. Is characterized by such pressure as 1.6 MPa or 16 kgf/cm2. This type of controller is direct.
All products are manufacturer Danfoss is divided into several categories:
Individual marks deserve AKV thermostatic devices from this manufacturer. The most active use they found among refrigeration units that are placed in shopping malls. Among the major advantages of this product are the following:
Regulators AKV also differ in that they possess a functional drive. The principle of operation of the valve based on pulse width control parameters.
Setting the TRV is better to adjust the supply of refrigerant to the evaporator. The principle of operation of thermostatic expansion valve based on the adjustment of the flow of the refrigerant so that at the outlet of the evaporator almost all the time there is overheating. In those moments, when overheating of the evaporator increases due to the thermal load, the controller increases the flow of refrigerant as long as the superheat value falls below the setpoint. This method of adjustment allows the device to maintain the fill level of the vaporizer to a volume that is limited to the pressure setpoint.
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