Meyer Puts The Brakes On Leaky Airlocks In 1998 American Vacuum, a Skokie, IL based system manufacturer contacted, Wm.W. Meyer & Sons looking for the solution to a problematic application. A Midwest based brake manufacturer had (2) 50 HP Central Vacuum Systems for the recovery of brake dust, operating at a 16” HG vacuum. They were using Rotary Airlock Valves on the material discharge. The Rotary Valves were leaking excessively, a

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