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| | "I love a Player" Chapter 1 "The Valve" by John Tuttle |
 | | Next, the hole in the lower chamber (a, Fig 3) is cut so that it is six times larger than the bleed hole between the two chambers. |
 | | However, when the partial vacuum exists in the upper and lower chambers in equal amounts (due to the bleed) and the "tracker hole" is opened to the outside air, the air, being higher in pressure, rushes in and tries to "fill up", or balance, the vacuum in the lower chamber. |
 | | When the tracker hole is once again closed, the vacuum from the upper chamber reenters the lower chamber through the bleed which balances the pressure and the membrane returns to a relaxed state. |
| www.player-care.com /mybook.html (1953 words) |
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