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What is the difference between flange butterfly valve and wafer butterfly valve
Wafer butterfly valve itself does not have a flange, is to rely on the pipe flange extrusion connection, the general use of stud bolt connection, flange butterfly valve itself with flange, and ordinary gate valve and so on the same. The function is similar. It is used for gas pipelines in sulfuric acid industry: front blower inlet and outlet, relay fan inlet and outlet, electric defogging series and connecting valve, S02 main blower inlet and outlet, converter adjustment, preheater inlet and outlet, etc. It is the * brand of valve for sulfur burning, conversion and dry suction in sulfur-burning sulphuric acid system. It is considered by the majority of users as butterfly valve with good sealing performance, light operation, secondary corrosion, high temperature resistance, convenient operation, flexible operation and safe and reliable use, which has been widely promoted and used.
2024-05-23
The difference between soft seal gate valve and hard seal gate valve
The opening and closing parts of the soft sealing gate valve are the gate plate. The movement direction of the gate plate is perpendicular to the fluid direction. The gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. The gate has two sealing surfaces. The two sealing surfaces of the commonly used mode gate valve form a wedge. The wedge angle varies with the valve parameters, usually 50, and the medium temperature is not high, it is 2 ° 52 ''''. General gate valve widespread leakage, easy to rust and other phenomena. Soft sealing gate valve (elastic seat seal gate valve), gate material for cast iron lining rubber, to overcome the shortcomings of the general gate valve such as poor sealing, elastic fatigue, easy to rust and so on.
2024-05-23
How much do you know about handling trap antifreeze small knowledge?
Selection, installation of the appropriate trap as long as there is steam through, there will be no freezing problems. However, if the steam is cut off, the steam condensate will form a vacuum in the heat exchanger or the accompanying pipe. This prevents condensation from freely draining out of the system before freezing occurs. Therefore, a vacuum breaker should be installed between the discharge equipment and the trap. If gravity discharge is not used from the trap to the return pipe, the trap and discharge pipeline should be discharged manually or automatically using a discharge pipe with antifreeze measures. Also, when multiple traps are installed together in the trap station, the trap insulation can prevent freezing.
2024-05-23
Technical characteristics and principles of ball valve selection
A clean and uniform open window, accounting agency, energy-saving assessment, environmental monitoring and other services are available, and the 800-square-meter business service center runs "at most once" into the heart of the enterprise. This is the epitome of the joint operation of the business service center by the Yongxing Chamber of Commerce in Longwan District. The 14 service windows perceive the value of the Chamber of Commerce at close range. "As the largest business association in Wenzhou, there are 488 member companies, and the enthusiasm for active participation is very high." Zhang Defei, president of Yongxing Chamber of Commerce in Longwan District, said that the last two years have been a critical period for the chamber of commerce to improve its quality and leapfrog development. The innovative "12345" model has been rated as a highlight project of the city's Federation of Industry and Commerce System Chamber of Commerce, and the services of the chamber of commerce have become more and more branded. The influence and attractiveness of agglomeration make the chamber of commerce full of charm.
2024-05-23
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