A beginner’s question: what is the purpose of such a connection?
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High-speed pump outlet control valve; the interlock action is pump shutdown and valve closure, with the valve operating in air-open mode
Why use two solenoid valves?
Could you explain in detail? For a regular chain, isn’t just one solenoid valve sufficient? What is the purpose of using two?
I need to take a look at the logic diagram. One might be the interlock of the pump itself, and the other is the plant interlock.
This control valve has only the interlock for pump tripping; nothing else
Are two levels of security better?
Take a look at that gas source connection – what is the interlock action? ?
One solenoid valve in use and one as backup? They are powered simultaneously under normal conditions; when one fails, the other can still maintain the connection, so the valve won’t operate incorrectly~~ This pump is quite important, right~~ Hehe~~
I think the answer on floor 9 makes a lot of sense
It’s not one in use and one as a backup; rather, when they operate in sequence, the solenoids are powered simultaneously and act at the same time. If one of them fails, the other can still cut off the air supply and close the valve.