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Focus on Donghai Valve, we will update you the new trends of the valve market and share the company's new trends from time to time


Precautions for ball valve maintenance

If there is slight leakage at the packing, the valve stem nut must be locked again. But do not lock it too tightly. Usually lock it for 1 / 4 ~ 1 turn, and the leakage will stop.


Advantages of electric valve over traditional valve

In terms of operation efficiency and saving energy consumption, the application of automatic control valve is an indispensable link. The manual valve and pneumatic valve commonly used in traditional industry are inferior to electric valve in installation cost and efficiency.


Advantages and disadvantages of pneumatic valve and electric valve

The actuating force distance of the pneumatic valve is larger than that of the electric valve. The switching speed of the pneumatic valve can be adjusted, with simple structure and easy maintenance. Due to the buffer characteristics of the gas itself, it is not easy to be damaged due to jamming.


How to select high quality electric ball valve

When purchasing electric ball valves, the practice of only specifying the specifications, categories and working pressure to meet the procurement requirements is imperfect in the current market economic environment.


How to correctly select electric ball valve

It is reported that in the next 10 years, China will have more than 20000 kilometers of oil pipelines to be built, including transnational oil pipelines such as Russia and Kazakhstan. In addition, after the "west to East Gas Transmission", China will also build more than 20000 kilometers of transnational gas transmission pipelines and branches.

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