The operation status of the three-way valve when there is no air flow is marked as FOAB; how should this be understood?
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I would like to ask everyone: how does a three-way valve function in a wind-free condition? How should F0AB be understood if it is marked as such? Thank you
My understanding is that FO stands for fault open, while FOAB means that the AB terminals are open in a wind-free condition. I’m not sure if it’s correct: lol
Thank you, but which two channels do the AB ends of the three-way valve refer to? Hot path and cold path? Either the hot path or cold path and the channel after convergence
This is generally defined freely; it’s necessary to check the instructions or consult the manufacturer. For new projects, it’s required to consult a design institute