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clack valve

 - 2 dictionary results

clack valve

–noun
a valve having a hinged flap permitting flow only in the direction in which the flap opens.
Also called flap valve.


Origin:
1855–60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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clack valve  
n.  A hinged valve that permits fluids to flow in only one direction and clacks when the valve closes.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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