Water valves with spigots
These water valves are operated by handles.

A valve is a device that it is used to decrease or stop the flow of a fluid (like gases, liquids, fluidized solids, or slurries). It can be installed for example in a pipe or a vessel.

There are many types of valves. Some examples are:

  • globe valve
  • gate valve
  • butterfly valve
  • safety valve.

They can be operated manually or automatically.

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Valve Facts for Kids. Kiddle Encyclopedia.