Question

a). What is valve? please give me the answer​

Answer 1

Answer:

A device in a pipe or tube which controls the flow of air, liquid or gas, letting it move in one direction only.

Explanation:

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Answer 2

Answer:

Here's ur answer

Explanation:

A valve is a device or natural object that regulates,directs or controls the flow of a fluid by opening, closing, or partially obstructing various passageways..

Hope this will help u..!!