According to the shape or geometrical profile
i) Convergent Nozzles
ii) Divergent Nozzles
iii)Convergent – Divergent Nozzles
According to the velocity at exit of nozzle
i) Sub-sonic Nozzles
ii) Sonic Nozzles
iii) Super-sonic Nozzles
According to the use of working fluid
i) Liquid Nozzles and
ii) Gas Nozzles
Applications: They are used in
i) Spray Pumps
ii) Engines
iii)Steam turbines
iv) Also used in Hose pipes, garden hose, garden sprinkler, kitchen faucet, water fountains, dancing fountains, firefighter hose, fire detectors