How to determine whether a cut-off valve is open or closed
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As shown in the figure, it is not possible to determine whether the shut-off valve is open or closed on site, as there are no indicators indicating the valve’s state
The usual way to determine whether a cut-off valve is open is to observe the position of the valve stem. If the valve stem is parallel to the pipe, the valve is usually open ； If the valve stem is perpendicular to the pipe, the valve is usually closed. It is also possible to check whether there are any indicator signs or handles next to the valve, and to try sensing the pressure difference on either side of the pipe or the sound of flow in order to make a determination. If you are still unsure, it is recommended to consult a professional. .
The location of the marker is clearly a mechanical feedback switch; go over there and take a look – there must be a lever, and pressing it will turn it off
Let’s switch to our cut-off valve instead; it’s easy to determine the open or closed state of the valve, and it’s even possible to set the degree of opening directly!
Ask the instrumentation engineers at your factory; if you have any problems, turn to the management
There is a travel switch on each side of this cylinder – one at the top and one at the bottom. The one at the top provides feedback on when the valve is open, while the one at the bottom gives feedback on when it is closed; the extension of the feedback rod indicates the current position of the valve
Furthermore, this valve cylinder is equipped with a spring cylinder; it is generally a single-acting cylinder, and the solenoid valve is used to open or close the valve
Which part do you mean by the travel switch? Where is it on the top and where on the bottom? Thank you
At both ends of the explosion-proof flexible connection of the solenoid valve, there are corresponding proximity switches; or there is a protruding feedback rod on the upper/lower end face of the cylinder cover of the air rod
https://tv.sohu.com/v/dXMvMzM1OTQxNzk3LzIwODY4NjAwNi5zaHRtbA==.html Refer to the corresponding part in this video to understand