Natural evaporation humidifier, humidifying element of the...
Needle adjustment means
Needle and seat valve assembly
Needle valve carburetor
Non uniform water distribution system for an evaporative cooler
Non-circulating water system for evaporative coolers
Non-corrosive, non-staining evaporative cooler
Non-leaking venturi carburetor
Non-venting microgravity carbonator and method
Nozzle assembly for the water distribution tray of a pad-type hu