Gio trnh Van cng nghip

26/56

Van bm c ca l mt tm kim loi lin v c th xoay 90o trong chu vi vng lm kn. T l dng chy c iu chnh bng vic thay i gc ca ca van.

T l dng chy t mc ti a khi ca van nm song song vi ng ng. Van bm cng thuc loi ng m nhanh. Khi v tr m th cn tr dng chy ca ca van l nh nht do s to xoy v st p khi dng chy i qua van l rt nh.