Q: Can someone explain 3-way vs 4-way solenoids please

[evilvet]

Poland / Technician, anyone.......... ?


I am sketching up a standard barrel seal launcher and hope to use a single solenoid to do the inlet / fill and port.

Do I need a 3-way or a 4-way or what ?

TIA

[jackssmirkingrevenge]

3 way valve.

one inlet from air source

two outlets - one to the pilot chamber (fill cycle), one to atmosphere (firing cycle)

That way the 3 way is either filling your chamber and blocking the exhaust, or exhausting while blocking the air feed.

[evilvet]

Thanks JSR, much appreciated

[MrCrowley]

Also, this is posted as a sticky in this forum section.

[evilvet]

posted as a sticky

Noted and duly chastened Mr Moderator, sir.