View the internal diagram of the device
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Seeing this design of the valve disc, do you know why? Those who know it well, those who haven’t seen it, take a look!
What device is it, and what is it used for?
I’m curious what such a valve disc is used for
Give the sea friends some time to think about it; I’ll tell you then. I believe there are those who know
It’s a bit like a louver, but it’s not a louver. Look at this overflow surface; there are holes on the lateral side, which serve to regulate the flow rate to some extent ； Electric device; its flange appearance resembles that of a ball valve in terms of working principle ； The picture isn’t comprehensive, so we can only guess! :lol
Why do you know so much about the nine-year compulsory education as well: lol