Graphical symbols for pneumatic componentsThis is a manual valve on the Oh!
This valve works as follows:Manually switch the three control bits, and then switch the valve to locate the valve by the circlip inside the valve bodyLeft function, -1 through 4,2, 3 (marked on the 3 pass 2 is obvious error);
This is the most common three bit four pass self-locking positioning manual reversing valve, but it is obviously wrong with drawing
The median functions -1, 2, 3 and 4 are closed and are not communicated with each other;The bit function -1 through 2,4 through 3 (marked on the 3 pass 4 is obvious error)The actual professional mark is to use P, T, A, B, instead of the top 1, 3, 4, 2.
