SMC Solenoid Valve SY5220-5DO-C6 ?

FIRST General Forum
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Page Number 18.

It is a 24VDC double solenoid valve.I just couldn’t find anyway to wire it.I mean which port is positive and which is ground ? And there is also one more port on it.Also , it writes “1” next to one of the ports and “2” next to another.

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Please don’t post the same question in more than one place.

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