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The difference between three-valve group and five-valve group

by:Sure     2021-08-08
The function of the three-valve group is to conduct or cut off the positive and negative pressure chamber of the differential pressure transmitter with the pressure guiding tube, or cut off or conduct the positive and negative pressure chamber. The five-valve group integrates a high and low-pressure blowdown valve on the basis of the three-valve group. There is no difference between the use of the three-valve group and the three-valve group. Although the five-valve group adds a high and low pressure drain valve, it is generally not used to discharge sewage. It is usually used to discharge the gas and liquid in the transmitter diaphragm. The function of the three-valve group is to change the positive and negative of the differential pressure transmitter. The pressure chamber and the pressure guiding tube are conducted or cut off, or the positive and negative pressure chambers are cut off or conducted. The five-valve group integrates a high and low-pressure blowdown valve on the basis of the three-valve group. There is no difference between the use of the three-valve group and the three-valve group. Although the five-valve group adds a high and low pressure blowdown valve, it is generally not used for blowdown. It is usually used to discharge the gas and liquid in the transmitter's diaphragm. After using it to empty the zero point, the blowdown still needs to be used after the transmitter. Because the five-valve group is installed before the transmitter, it can only discharge in the pressure guiding tube, and when the diaphragm is dirty, it cannot be discharged from the five-valve group. But after using the five-valve group, it is convenient to check and calibrate the transmitter online.
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