ball valve: Revision history

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12 July 2022

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13 February 2015

16 June 2014

11 May 2014

  • curprev 01:3001:30, 11 May 2014Equinox talk contribs 142 bytes +142 Created page with "==English== ===Noun=== {{en-noun}} # A contrivance by which a ball, placed in a circular cup with a hole in its bottom, operates as a valve."