High-pressure aeroponic misters or spray nozzles are available in many different materials of construction: Brass, cast iron, stainless steel, PVDF (Polyvinylidene), CPVC which are Polymers – and even titanium.
Many factors need to be considered when selecting the appropriate material of manufacture for spray nozzles:
Temperature, Corrosion, Abrasion, and Cost.
Getting it right can save you time, money and a few headaches.
High Tech Gardener