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.
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 valve which will allow water to pass in one direction but will close and prevent flow (backflow) in the opposite direction.
A valve that closes to prevent backward flow of liquid
having a beak resembling that of a duck; "a duck-billed dinosaur"
paddlefish: primitive fish of the Mississippi valley having a long paddle-shaped snout
platypus: small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
An animal with jaws resembling a duck's bill, e.g., a platypus or a duck-billed dinosaur
an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products
A tough elastic polymeric substance made from the latex of a tropical plant or synthetically
An oblong piece of rubber or similar material embedded in the pitcher's mound, on which the pitcher must keep one foot while delivering the ball
Rubber boots; galoshes
returned for lack of funds; "a rubber check"; "a no-good check"
rubberize: coat or impregnate with rubber; "rubberize fabric for rain coats"
WDC: Duckbill dinosaur
Dinosaur, Wyoming Dinosaur Center, Fossil, museum, duckbill dinosaur, hadrosaur