Problems with solenoid valves
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As shown in the figure, I have solenoid valves installed. Can their on and off states be determined on-site? Is its switch operated by electricity? Thank you
On-site, it is only possible to determine whether the solenoid valve has activated by observing the changes in the flow meter following the process, by turning the power on and off.
It seems to me that this valve operates when powered; you can use an iron object (such as a screwdriver) and bring it close to check for any magnetic attraction, in order to determine whether the coil is powered. Then, based on the conditions at the site, you can decide whether the valve is operating due to being powered.
How is it visually determined whether power is applied? Thank you
If there is internal leakage in the solenoid valve, can it also not be determined?
I think it’s better to check the system diagram for confirmation, as well as look at the information related to the solenoid valves
It is not possible to determine the status of this solenoid valve on-site; its operation is determined by whether power is supplied or not
It can only be determined by fluctuations in pressure and flow rates before and after; it’s not visible from the outside
Observe the downstream flow meter during power on and power off conditions
I think the method on the 3rd floor is feasible. The solenoid valve opens and closes relying on magnetic force.
Under normal conditions, this valve opens when powered and closes when power is lost. Place the screwdriver on top of the valve; when electricity is applied, a magnetic field is generated, which attracts the screwdriver. When trying to lift it, resistance is felt ； In the event of a power loss, lower the screwdriver, and it will lift again with no resistance.