The metal hard seal butterfly valve is a valve used to realize the flow control and on-off of the pipeline system. It has been applied in many aspects such as petroleum, chemical industry, and hydropower. Among all the known valves, the sealing structure and sealing materials of hard-sealed butterfly valves are quite excellent, so it is not suitable for use in high-temperature places. Now there is a kind of electric hard-sealed butterfly valve, which is more advanced, has a very good conjoined structure, and has excellent temperature resistance and corrosion resistance. More and more people use it. The multi-layer sealing ring is fixed on the valve plate. Above, this kind of valve is much simpler in operation than a transmission valve. There will be no friction when opening and closing, and when closing, the compensation seal will not be increased due to the transmission mechanism, which improves the service life of the valve!
The relationship between the valve opening and the flow rate is basically a proportional change. If it is convenient to control the flow rate, the flow characteristics of this kind of valve have a close relationship. If the valve diameter is installed between the two pipelines, then the form It is equal. If the coefficients of the pipes are different, the flow rate will be very different!
When the valve is in a relatively large throttle range, the back of the valve plate is prone to cavitation. At this time, if the valve is used forcibly, it will cause great damage to the valve. At this time, the valve should be closed immediately and the throttle should be adjusted. The amplitude is in use!