I am not sure there is enough information here to suggest a specific valve. However, you should be able to use a small direct acting valve. The Clippard EV is a great valve and may work for this application.Anyone would need to know the size of th
The bellows are approximately the size of a 1.5liter nalgene bottle. They are to fill or empty in about one second, going from 0 to 0.3psi. Do you know where we could find a pressure and volume vs fill time chart or formula? I’ve seen them, but on
Maybe I misunderstood what you were originally asking. It sounded like you were filling the bellows with a valve, then dumping to atmosphere using the bellows as the exhaust mechanism.Now that I have a clearer picture of what you are doing I can
I understand what you are trying to do. A single 3-way valve could be used to alternate between pressure and vacuum to the bellows. If you want a third option to block” the bellows to hold the air pressure in it
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