Vanky

Abstract 　 Discussed the structural characteristics of commonly used gate valves, analyzed the cause of the accident from several aspects such as type selection, design, manufacture, installation, use, and maintenance, proposed the harm of abnormal pressure rise in the middle cavity to the valve, and summarized the protective measures. Keywords 　gate valve; abnormal boost; design […]

 Overview In water systems, engineering, such as urban pipeline network, seawater desalination, sewage treatment, water pipeline, and pumping station, gate valves and butterfly valves are used in large quantities as devices to stop the flow of media. In the system, the selection and use of valves are very important. If the valve selection is unreasonable,

Screen is composed of a set of parallel metal grids. the main application industries are water treatment, wastewater treatment, oil, and gas, power generation, food and beverage, mining, pharmaceutical, pulp, and paper, etc; which are generally placed obliquely in front of the sewage lift pump collection tank or on the water inlet channel to intercept

Abstract　  Introduced the lifting weight structure of the hydraulic control check butterfly valve and the mechanical and electromagnetic combined locking mechanism, and explained its composition, working principle, and characteristics. Keywords      Check valve; butterfly valve; heavy hammer; lock; principle   Overview   Many large water pump outlets use hydraulically controlled check butterfly valves to

Summary This article introduces the performance and composition of the ultra-large intelligent flow control equipment manufactured by FCV Company, discusses the dynamic and static sealing characteristics of the DN4800 butterfly valve designed according to the actual working conditions, and summarizes the rigidity of the main body of the butterfly valve by using a computer. And

  Summary    There is a large gap between the main butterfly plate and the auxiliary butterfly plate of the butterfly valve of the water turbine generator water intake pipe due to improper operation. Under the premise of not affecting the valve switching performance, it is proposed to perform local grinding treatment on the guidepost

Sluice gate uses and types   The sluice gate is one of the main buildings in water conservancy projects such as irrigation and waterlogging. It is mainly: the function of controlling the flow scene and adjusting the water level through sluice gate hoist.   1. Classified according to the purpose of the sluice gate  

Abstract This article introduces the classification and performance characteristics of valve electric actuators and discusses the selection of electric devices under the premise of meeting the requirements of working conditions and technical requirements.

Keywords valve electric actuator classification selection

Abstract：  The iso-strength sealing ring structure of the triple eccentric hard-seal butterfly valve is introduced, and the process improvement to improve the performance of the sealing diagram and the long-term service life is discussed.
Keywords Triple eccentric butterfly valve. Equal-strength seal design. Process improvement of triple eccentric butterfly valve.