I have a unit Dave that I put in up in the ceiling of my greenhouse and it had small brass heads. I was good and worked beautifully for a while.
While our well water is crystal clear and our aquifer is basically Spring water with no smell;...does not make calcium deposits or Iron buildups, there are enough minerals in our water that my heads kept clogging up every few days after a couple of months.
The ones I installed actually created a "mist".
I am thinking about retrofitting my tubes with another maybe less misty mist heads made more from drip tube type "chunky mist" heads though;........someday?
I don't really find these that misty though compared to the true mist that the small system I initially installed did do.
....................It was great while it did though!
