Thinking about those two strange issues with the gauge valves~~~~~
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Today I thought of two rather strange valve-related issues; I wonder if anyone is aware of them or has considered them~~~ First, can it be determined from the appearance of a pneumatic angle valve whether the valve is closed or open when its stem is pushed inward? II. Pneumatic valves: For example, with the simplest double-acting valves, can it be determined just by looking at them which air supply is used to close the valve and which one is used to open it?
It’s not clear; we don’t know about the combination of the valve core and the valve body. There are two types: one in which the valve core is above the valve seat, and another in which it is below the valve seat
I feel the same way, but could there be experts who can figure it out right away?
Ha, the senior is joking; maybe only he can really see it
For double-acting valves, if the cylinder is installed vertically, the valve operates with a straight stroke, which can be seen in valves such as those produced by Shanghai Valtek.
Double-acting; in the case of a straight-stroke type, it is possible to see which pipe is open and which one is closed.
Some can be seen, while others cannot.
Check whether the actuator is on the left or right side of the cylinder! In general, for pneumatic valves with angular stroke, whether they are single-acting or double-acting, the end far from the actuator is air-open! The end close to the actuator is the air shut-off! ! ! Of course, there is a prerequisite: whether the valve is air-operated to open or air-operated to close! Most of them should be air-operated valves! I’ve never used a double-acting one for linear motion... so I don’t know! Also, regarding what you mentioned about whether the valve stem of the corner valve moves inward or outward, we can’t tell either!
Bro, the straight travel path is definitely visible, but what I’m mainly interested in is the angular travel path. . .
There should be; the valves that are activated all have indicator rods to show the degree of opening of the valve