Do pneumatic wafer butterfly valves and automatic butterfly valves have to be equipped with motors? To create the quality of pneumatic butterfly valve, we need to understand the market demand. The market situation is different in different periods, so their own needs are also different. We can have a better understanding of market demand, so that we can find the direction of research. Before doing something, we should determine our own direction. When your direction is correct, it is guaranteed that you can do it well. But if our own direction is wrong, how can we ensure that we can actively do these practical things in the future?
、 2. Connection between valve and electric device The connection type and size of valve and electric device shall comply with the national standard: GB/T12222-1989 Connection of multi turn valve drive device, and GB/T12223-1989 Part of the connection of rotary valve drive device.
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