What is gained when things work poorly or don't work at all?
Fire
Certainly not!
Looks like ChatCPT generated crap?
Looks like you don't know how to follow a schematic and relay operations
Looks like you invented relays whose coils are powered by diodes and switched by telepathy?
I was referring to jim-p on how to use two relays. OP already knows how to trigger a relay so that doesn't need to be shown.
No.
I'm back. I tried using the 2-relay thing for my weird solenoid valve but nothing. The script turned on the relay 2 and turned off the relay 1 and reverse after 3 seconds. Instead of trying everything to get this thing working, I would just buy a regular solenoid valve that just works. You supply power, it opens and when you don't it closes. What do you think?
Best idea yet
Edit: you were referring to the OP when you said "No", never mind.
Besides the SPST being a SPDT, which doesn't really make a difference, how is this not what you were inferring?
Now I know this going to be off topic but what if the solenoid valve doesn't fit in the faucet?
I do think that would be the easiest, cleanest, and most reliable.
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Then you provide pictures, measurements, etc. 
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If the solenoid valve (not the weird one I have) is going to be just like a regular solenoid valve, I would use one relay/transistor and I'm ready to go. No H bridges, 2-relay circuits and other stuff. (That's what I think is gonna happen I'm not sure)
I think we now need a plumber to join he forum
And a flyback diode
Haha sorry. 
I have diodes that do work 