A valve that closes to prevent backward flow of liquid
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.
Denoting, relating to, or operated by a liquid moving in a confined space under pressure
(of cement) Hardening under water
of or relating to the study of hydraulics; "hydraulic engineer"
(hydraulics) fluid mechanics: study of the mechanics of fluids
Of or relating to the science of hydraulics
moved or operated or effected by liquid (water or oil); "hydraulic erosion"; "hydraulic brakes"
A thing that represents or stands for something else, esp. a material object representing something abstract
The typographic character @, called the at sign or at symbol, is an abbreviation of the word at or the phrase at the rate of in accounting and commercial invoices (e.g. "7 widgets @ $2 = $14"). Its most common modern use is in e-mail addresses, where it stands for "located at".
A shape or sign used to represent something such as an organization, e.g., a red cross or a Star of David
an arbitrary sign (written or printed) that has acquired a conventional significance
A mark or character used as a conventional representation of an object, function, or process, e.g., the letter or letters standing for a chemical element or a character in musical notation
something visible that by association or convention represents something else that is invisible; "the eagle is a symbol of the United States"
Symbols
These are the symbols found in the commpass searching.