Here is the closet example of the OP's item I can find so far... Someone post better. and don't forget to be "precise". heh
DETECT WITH RESPECT - Have permission... Fill holes... Dispose of trash. - The Random Chat Thread - http://www.treasurenet.com/forums/ev...en-24-7-a.html
No "barrel" involved with this. "Tap" related... but in a 1910-on sorta way... used in multiple applications... as well as in soda and beer fountains. Similar... but not limited to... this.
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