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
Forge (an article) by such means
(weld) join together by heating; "weld metal"
(weld) dyer's rocket: European mignonette cultivated as a source of yellow dye; naturalized in North America
fastening two pieces of metal together by softening with heat and applying pressure
Join together (metal pieces or parts) by heating the surfaces to the point of melting with a blowpipe, electric arc, or other means, and uniting them by pressing, hammering, etc
Unite (pieces of plastic or other material) by melting or softening of surfaces in contact
Welded Plastic
Got the plastic hot enough to flow with a glueless glue gun.
Welded
It's an ugly weld cause I forgot to turn the gas on LOL.