Things to pay attention to when selecting a valve based on its functionality

Thread Content

1) Adjustment function ① requires smooth valve action； ②Small opening and good adjustment performance ； ③ Select the required flow characteristics ； ④Meet the adjustable ratio ； ⑤Small resistance and large flow ratio (ratio of the valve’s rated flow parameter and nominal diameter) ； ⑥Adjust the speed. 2) Leakage amount and cut-off pressure difference are two inseparable and interrelated factors. 3) Anti-clogging Even with clean media, there is a problem of clogging (dirty media in the pipeline), and unclean media is more likely to get clogged. 4) Corrosion resistance includes resistance to erosion, cavitation, and corrosion. It mainly involves the selection of materials and the service life of the valve. At the same time, it also involves economic issues. 5) Pressure resistance and temperature resistance This involves the selection of the nominal pressure and operating temperature of the regulating valve. The relationship between the working temperature, working pressure and nominal pressure of commonly used materials is shown in Table 5-1 below. 6) Miniaturization, lightness and instrumentation in weight and appearance