Mercedes Check Valve

check valve
A check valve, clack valve, non-return valve or one-way valve is a mechanical device, a valve, which normally allows fluid (liquid or gas) to flow through it in only one direction.
A mechanical device in a pipe that permits the flow of water or air in one direction only.
A valve that closes to prevent backward flow of liquid
Limits the flow of gas to one direction only. Use a check valve between the bubbler and generator to prevent unwanted pressure build up in the generator, and a safety against a low level bubbler. A check valve, such as used on torches, is recommended.

mercedes
The Mercedes-Euklid is a German-invented calculator from the early twentieth century. It was built in Thuringia, Germany in 1905. The first manual mechanical models utilized a proportional-lever design invented by Christel Hamann in 1903.
Mercedes is a genus of butterfly in the family Lycaenidae.
Mercedes was a brand of the Daimler Motoren Gesellschaft (DMG which began to develop in 1900, after the death of its co-founder, Gottlieb Daimler.