1. Stomata
This is a small cavity formed in the metal by the gas that fails to escape during the solidification process, its inner wall is smooth, contains gas, and has a high reflectivity to
Due to the difference in upstream and downstream pressure, the flow of material through the valve is called pressure drop (△P) or differential pressure.
01 Why is the two-seat valve easy to oscillate when working with small opening?
For a single core, when the medium is flow open, the valve stability is good;