Types of nozzle

(a) Hollow cone nozzle:

• liquid is fed into a whirl chamber through a tangential entry or through a fixed spiral passage to give a rotating motion.
• The liquid comes out in the form of a harrow conical sheet which then breaks up into small drops.

(b) Solid cone nozzle:

• This nozzle covers the entire area at small range.
• The construction is similar to hollow cone nozzle with the addition of an internal jet which strikes the rotating liquid just within the orifice of discharge.
• The breaking of drop is mainly due to impact.

(c) Fan nozzle

• It is a nozzle which forms narrow elliptical spray pattern.
• In this type the liquid is forced to come out as a flat fan shaped sheet which is then broken into droplets.
• This nozzle is mostly used for low pressure spraying.