Looking at the picture, seeking help from experts
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Could some expert tell me how to interpret this diagram? ? As shown in the figure – below the air-controlled valve is the power on/off control, and above it is the valve itself. What does his number 123 mean?
One more question: What do the small triangles in the diagram mean? What does the symbol next to the number 3 below mean?
This post was last edited by li*nji on 2019-1-27 at 16:15. 1, 2, and 3 are the airway labels on the valve body; we usually label them as ports A, B, and C. The rectangular symbol next to 3 represents the exhaust silencer, while W denotes the return spring； The triangle indicates the direction of airflow; the exhaust outlet is equipped with connection measures.
Give me some materials so I can learn from scratch. The version 93 may be obsolete, but the changes aren’t significant, and it seems more convenient to use.
I can’t even understand this, so what’s the point of trying? I’ve never asked anyone, nor have I looked at those two documents upstairs. It’s still understood in no time at all. That was still over 10 years ago.
The one below is a solenoid valve, while the one above is a pneumatically controlled valve. The pneumatically controlled valve operates in a similar manner to the solenoid valve; the only difference is that the movement of its valve element is controlled by electromagnetic forces in the case of the solenoid valve, whereas it is controlled by air pressure signals in the case of the pneumatically controlled valve. 123 refers to the three ports of a two-way three-port valve. There are two positions: one with a pressure signal and one without; the positions corresponding to when the solenoid valve is powered and when it is not powered are the same. For this working position, in one setting 1-2 is connected, and in another setting 2-3 is connected.
The answer above is great; I hope the original poster studies hard*~!