[rotrex]

there are no specifications for switch times.
the closed thing I can spontaneously come up with is Aquamist's current valve.
But even this will be rather on the slow side for sequential port injection.
The next thing is that you then have a bit of pipe to the jet. With a ID of 1.5mm it has a inner volume of 18µl per cm or 180µl per 10cm.
The fluid volume injected per cycle will be of a similar order. This could or could not lead to issues forming a nice cloud out of a remote nozzle at the right time.