Gas pressure reducing valve, also known as gas pressure regulator, is called liquefied petroleum gas pressure reducing valve if it is dedicated to the pressure reduction of liquefied petroleum gas. Its function is to adjust the gas pressure from a relatively high pressure to a suitable relatively low pressure. To be clear, although this device is called a pressure regulator, it only has the function of reducing pressure, and cannot adjust the pressure to a relatively high level.
The classification of commonly used gas pressure regulating valves, according to a more popular view, is divided into two forms: direct action and indirect action, including websites such as Baidu Encyclopedia. In fact, there are quite a few unanimous opinions on the Internet, which are actually misinformation, and in the end, three people become tigers.
The so-called direct type, more accurately, should be called the direct-acting type. Its basic working principle is that when the high-pressure gas enters the decompression chamber and the output is closed, the input is closed. After the output is turned on, the gas flows out, the space of the decompression chamber increases, the spring is pushed up and the input port is closed at an appropriate adjustment position, and after the gas in the decompression chamber is reduced, the input port is opened again...and so on, so that the decompression chamber The pressure is constant to the set position. This type of gas pressure reducing valve is generally used for reducing the pressure of petroleum liquefied gas with relatively high pressure difference conversion. Such as FISHER, ELSTER and other products. Of course, the most common product should be the household liquefied gas pressure reducing valve. This type of pressure reducing valve should pay attention to prevent the breathing hole from being blocked.
If the classification method of the direct type is still clear, the so-called "indirect type" obviously regards the gas diverging valve as a separate item, but in fact the gas diverging valve can not only follow the so-called "direct type", It can also be manufactured in a so-called "indirect" design. It can be applied not only to large gas stations, but also to small industrial equipment.
The more suitable classification of the second type of pressure reducing valve should be called pilot pressure reducing valve. Its principle is actually the same as that of the direct-acting type. The pressure reducing valve acts as a pressure regulator (the so-called pilot valve) and the other acts as a pressure reducing valve, the so-called main pressure reducing valve.
The gas diverter valve is based on the principles of the two, as long as there is an overpressure discharge function, it can be realized, so the indirect statement is obviously nondescript.
At the same time, the obvious difference between the two is not "divergence" or not, but a significant difference in appearance-in the commonly used small gas pressure reducing valves, direct-acting flat, pilot-operated stilts, this is because the latter internal There is another direct acting valve.
Generally speaking, the direct-acting type and the pilot-operated type have exactly the same decompression function, but due to the working principle, if the gas pressure reducing valve with large diameter and large flow is designed and manufactured with a direct-acting type, the diaphragm area will be relatively large , and the leading type solves this drawback. Therefore, the direct-acting type is mostly used for gas decompression with small caliber, while the pilot type is mostly used for gas decompression with large caliber and large flow.
Pilot-operated pressure reducing valves are widely used in gas burners, such as DUNGS, kromschroder, honeywell, madas, giuliani and other products.
According to the PREN676 standard, burners larger than 1200KW/H must be equipped with safety devices, including gas pressure reducing valves. In fact, most domestic natural gas pipelines have been equipped with pressure regulators before they enter the household. Whether the burner must be equipped with a pressure regulator should be determined in advance to reduce unnecessary expenses.
There are many domestic products of this kind, which are relatively mature and relatively cheap, but especially because of preconceived ideas and self-contempt, domestic products are almost hard to find in the supporting applications of burners. At the same time, imports are selling well despite their high prices.
The most widely used gas pressure reducing valve in China is German DUNGS.
Gas pressure reducing valve, also known as gas pressure regulator, is called liquefied petroleum gas pressure reducing valve if it is dedicated to the pressure reduction of liquefied petroleum gas. Its function is to adjust the gas pressure from a relatively high pressure to a suitable relatively low pressure. To be clear, although this device is called a pressure regulator, it only has the function of reducing pressure, and cannot adjust the pressure to a relatively high level.
The classification of commonly used gas pressure regulating valves, according to a more popular view, is divided into two forms: direct action and indirect action, including websites such as Baidu Encyclopedia. In fact, there are quite a few unanimous opinions on the Internet, which are actually misinformation, and in the end, three people become tigers.
The so-called direct type, more accurately, should be called the direct-acting type. Its basic working principle is that when the high-pressure gas enters the decompression chamber and the output is closed, the input is closed. After the output is turned on, the gas flows out, the space of the decompression chamber increases, the spring is pushed up and the input port is closed at an appropriate adjustment position, and after the gas in the decompression chamber is reduced, the input port is opened again...and so on, so that the decompression chamber The pressure is constant to the set position. This type of gas pressure reducing valve is generally used for reducing the pressure of petroleum liquefied gas with relatively high pressure difference conversion. Such as FISHER, ELSTER and other products. Of course, the most common product should be the household liquefied gas pressure reducing valve. This type of pressure reducing valve should pay attention to prevent the breathing hole from being blocked.
If the classification method of the direct type is still clear, the so-called "indirect type" obviously regards the gas diverging valve as a separate item, but in fact the gas diverging valve can not only follow the so-called "direct type", It can also be manufactured in a so-called "indirect" design. It can be applied not only to large gas stations, but also to small industrial equipment.
The more suitable classification of the second type of pressure reducing valve should be called pilot pressure reducing valve. Its principle is actually the same as that of the direct-acting type. The pressure reducing valve acts as a pressure regulator (the so-called pilot valve) and the other acts as a pressure reducing valve, the so-called main pressure reducing valve.
The gas diverter valve is based on the principles of the two, as long as there is an overpressure discharge function, it can be realized, so the indirect statement is obviously nondescript.
At the same time, the obvious difference between the two is not "divergence" or not, but a significant difference in appearance-in the commonly used small gas pressure reducing valves, direct-acting flat, pilot-operated stilts, this is because the latter internal There is another direct acting valve.
Generally speaking, the direct-acting type and the pilot-operated type have exactly the same decompression function, but due to the working principle, if the gas pressure reducing valve with large diameter and large flow is designed and manufactured with a direct-acting type, the diaphragm area will be relatively large , and the leading type solves this drawback. Therefore, the direct-acting type is mostly used for gas decompression with small caliber, while the pilot type is mostly used for gas decompression with large caliber and large flow.
Pilot-operated pressure reducing valves are widely used in gas burners, such as DUNGS, kromschroder, honeywell, madas, giuliani and other products.
According to the PREN676 standard, burners larger than 1200KW/H must be equipped with safety devices, including gas pressure reducing valves. In fact, most domestic natural gas pipelines have been equipped with pressure regulators before they enter the household. Whether the burner must be equipped with a pressure regulator should be determined in advance to reduce unnecessary expenses.
There are many domestic products of this kind, which are relatively mature and relatively cheap, but especially because of preconceived ideas and self-contempt, domestic products are almost hard to find in the supporting applications of burners. At the same time, imports are selling well despite their high prices.
The most widely used gas pressure reducing valve in China is German DUNGS.