These open and close to regulate the flow of something 

Please find below the These open and close to regulate the flow of something answers. This question is part of Level 1409. If you are stuck and are looking for help then this is the right place for you. Word Craze is an exciting crossword puzzle game where the game graphics and the unique crossword puzzle clues make it a great game to play for all ages. This level was last updated on November 29 2021

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These open and close to regulate the flow of something