Balanced flow meter
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What does Φ22 mean in the pressure tapping method specified for balance flowmeters? Does Φ22 refer to pressure measurement at the pitch diameter?
It refers to the fact that the outer diameter of the pressure tapping port of the differential pressure transmitter is 22; it is usually a socket weld connection, and manufacturers typically supply two 22-mm short pipes along with socket weld valves. If there is no need, it should be specified in the material list
I’ve learned something from this; thanks for your reply, expert