How to use the characteristics of pneumatic double speed check butterfly valve? ④ Limit switch: it transmits the signal of valve switch position remotely. There are mechanical type, proximity type and inductive type.
、 When we purchase pneumatic butterfly valves, it is very important to master the correct purchasing method. In addition to the above, we should also pay attention to its after-sales service. Because if it is a regular manufacturer, its after-sales service is relatively good. Our buyers need not only the cost performance of a product, but also after-sales service. Because if there is any problem in the use process, it can guarantee the consumer rights of our users. After all, I'm not afraid of ten thousand just in case.
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