According to the experience of the small editor for many years, it is suggested that you can start from the three aspects of versatility, pressure drop and weight to help you select satisfactory and practical devices.

2. As a result, dirt accumulates in the valve and cannot be closed tightly, causing serious oil leakage and channeling; The valve is not closed after maintenance, or the branch pipe is not plugged after valve disassembly; Raw materials that are not resistant to acid and alkali and pressure tests are used for the valve dust seal gasket. Therefore, it is necessary to improve the inspection of valves and strive to ensure prevention in the future.