First, the basic principle of steam relief valve:
1. Regulatory range: It refers to the adjustable range of pressure relief valve output pressure P2. Within this range, the required accuracy is required. The pressure regulation range is mainly related to the degree of pressure adjustment spring.
2, pressure characteristics: It refers to the flow g is a fixed value, due to input pressure fluctuations caused by the characteristics of output pressure fluctuations. The smaller the output pressure fluctuations, the better the relief valve characteristics. The output pressure must be lower than the input pressure - the set value does not change substantially with the input pressure.
3, flow characteristics: It refers to the input pressure - timing, output pressure changes with the output flow g change the holding. When the flow g changes, the smaller the output pressure change, the better. The lower the general output pressure, the smaller it will fluctuate with the change in output flow.
Second, the use of imported steam relief valve:
First select the type of pressure relief valve and pressure regulation accuracy according to the application requirements, and then select the path according to the required maximum output flow. When determining the air supply pressure of the valve, it should be greater than the maximum output pressure of 0.1 MPa. Pressure reducing valve is generally installed after the water diverter, before the lubricator or the valuer, and take care not to reverse the inlet and outlet; when the valve is not in use, the knob should be loosened to avoid the diaphragm from being deformed under pressure. Its performance.