You never knew when the 1MC was going to be a source of amusement. We had a seaman announce, “Dickie Byrd departing” one day instead of Richard E. Byrd.. The captain was not amused. The next announcement almost immediately was “Arriving.”
http://www.dometic.com/47dc839e-0c3a-476d-8b91-b83b27b06884.fodoc
VacuFlush owner’s manual
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The VacuFlush system fills a ten-gallon (28.4 liter) tank in the same time that an ... Vacuum generator design eliminates clogging problems associated with other ...