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.
specifies the color used to fill the bars with the lowest values. You cannot use the CLOW()= option in conjunction with a CBARS=variable, but you can use the CLOW()= option together with the CBARS=color and CHIGH()= options. See Output 11.3.1 for an illustration of the CHIGH()= option.
Clow Fire Hydrant
This Clow was taken out of service from the Norristown Transportation Center Station in 2010 and was replaced by a red Mueller