Here's a cool new valve for makers interested in pneumatic systems, hydraulics, inflatables, projects with compressed air, and the like. These air valves, also known by other names like, automatic bleeding valve or air release valve, are typically used to passively release air from a pressurized container.
This valve is rated at 6V but we used it just fine at 5V.
There are three ports on this valve, and you can sort of think of the valve as a pneumatic 'relay:
Of course, you'll need an air pump to generate pressure either positive or negative.Comes with a cable with what looks like a 2.5mm plastic connector on the end.