【Daily Question No. 115】April 25, 2019
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This post was last edited by Green Lotus on 2019-4-25 21:44. [Daily Question No. 115] On April 25, 2019, when the instrument air supply was stopped, the automatically controlled air-operated control valves would close completely. True or False ( ) Please reply within two days.
It’s not necessarily the case; there are valves that open when there is pressure, and valves that close when there is pressure.