How to apply. $20.40 for a printout of your marriage certificate â this is a copy of the information from the registration and contains all the information on the record. Printouts are usually used for genealogy and aren't official documents.
Airplane toilets use an active vacuum instead of a passive siphon, and they are therefore called vacuum toilets. When you flush, it opens a valve in the sewer line, and the vacuum in the line sucks the contents out of the bowl and into a tank.
Through the mid-1980s, airplane toilets used Anotec, the blue deodorizing liquid you see in the bottom of Port-a-Johns, to push waste from the bowl into onboard storage tanks. Electric pumps actively drove the process, circulating fresh fluid through with every flush.