It only uses one half gallon per hour per nozzle.
Thread size: 4mm(diameter)*5mm(length) , 3/16" pitch. Note : this is a high Pressure mist nozzle , the Pressure is 20-80kg/cm
features a sturdy brass body with stainless steel orifice
Soaking periodically in misting nozzle cleaner to remove mineral deposits that may accumulate with usage
A Filter on your mist system