From TheBestLinks.com
An airlock is a device which permits the passage of objects, people, etc between a pressure vessel and its surrounding space while minimising the change of pressure in the vessel. It simply consists of two airtight doors, which are never opened simultaneously. A small volume of high pressure air, equal to the volume of the chamber between the doors, is reduced to the lower pressure space each time the airlock is operated.
The same principle, used with water, is found in the locks used on canals.
An Airlock can also be used in brewing and is a simple 'S' shaped piece of plastic tubing that is half filled with water. When fitted into the top of a carboy by a rubber stopper the airlock allows waste carbon dioxide to escape while preventing outside air from bringing in bacteria that may spoil the batch. The positive pressure of the CO2 inside of the carboy pushes out individual bubbles of carbon dioxide through the water and out to the air.
Related links
Top visited
0 of
0 links
[no links posted yet]
>> place link >>
Discussion
Last posted
0 of
0 messages
[no messages posted yet]
>> post message >>
Watch
You can
add this article to your own "watchlist" and receive e-mail notification about all changes in this page.
