Crossword Genius

Device controlling flow (5)

Ross

I believe the answer is:

valve

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">device controlling flow</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

(Other definitions for valve that I've seen before include "Structure with a flap to insure one-way flow of fluid" , "Flow controller" , "Device for controlling the flow of a fluid in a pipe" , "Device regulating flow" , "Flow-controlling device" .)

I've seen this clue in The Guardian.
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