Nozzles: Nozzles: Misting nozzles can be found at http://www.mcmaster.com/ . Get the stainless steel version - 3178K41. It has a low flow rate of 1 gph (gallon per hour) at 100psi, so you don’t have to worry about to much fluid be sprayed in.
Hose, Fittings and Solenoid Valves:
There are a few sites for these. I got my hose from http://www.poweraire.com/ . As far as solenoid valves and fittings there are many choices, one more expensive than the next. I searched the net for places to buy quality valves and fittings for less. I found http://www.stcvalve.com. Their prices are very reasonable. Valves are $19.00 and fittings are competitive.