Poppet Check Valve

check valve
A mechanical device in a pipe that permits the flow of water or air in one direction only.
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.
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 valve that closes to prevent backward flow of liquid

poppet
Moshi Monsters is a social networking online game targeted at children aged 7 to 14, in which a player adopts and cares for a monster. Solving educational puzzles leads to rewards called Rox, which can be used as currency to buy items for the adopted monster, such as food and furniture.
A mushroom-shaped valve with a flat end piece that is lifted in and out of an opening by an axial rod
An endearingly sweet or pretty child or young girl (often used as an affectionate form of address)
The word poppet is an older spelling of puppet, from the Middle English popet, meaning a small child or doll. In British Dialect it continues to hold this meaning. Poppet is also a chiefly English term of endearment.
A small figure of a human being used in sorcery and witchcraft
a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines