Nozzle

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Nozzle" – news · newspapers · books · scholar · JSTOR (March 2009) (Learn how and when to remove this message)

Center pivot irrigation sprinkler nozzles, used in crop irrigation

Rotator style pivot applicator sprinkler

End Gun style pivot applicator sprinkler

A nozzle is a device designed to control the direction or characteristics of a fluid flow (specially to increase velocity) as it exits (or enters) an enclosed chamber or pipe.

A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid (liquid or gas). Nozzles are frequently used to control the rate of flow, speed, direction, mass, shape, and/or the pressure of the stream that emerges from them. In a nozzle, the velocity of fluid increases at the expense of its pressure energy.