We bought ourselves a Mistking system and very happy about it.
Big plus are the heads that can be rotated to practically any angle you wish.
Don't know if this is what you're looking for, but that's what we use for watering our terrarium mounted orchids.
Mistking
Looking for a misting system? Look no further. Automated misting systems from MistKing are used by multitude of plant enthusiasts and are perfect for Orchids. Systems feature run dry pumps, ZipDrip valve, adjustable black nozzles, per second control! Automatically mist one growing shelf or a greenhouse full of Orchids.