Manifolds allow you to have one CO2 tank with multiple lines. Each line can be turned off individually without affecting flow to other kegs. Each ball valve contains a check valve that ensures no beer or gas can flow between the two kegs. The barbs are all 5/16", standard for gas line in the beer industry.
Bought the manifold and started losing gas after maybe 9 months. Pressure checked manifold and indicated a hairline crack in the tee fitting. Removed that tee, temporarily fixed the problem however a couple of months later the other tee started leaking. Both leaks not related to over tightening of fittings.
Purchased this to limit flavor transfer between my kegs and have been pleased with performance. Construction seems sturdy and have had no leaks although I have only had this on my system for a few months now.
I purchased this to expand my homebrew kegerator from one keg to two. The barbs on this are all 5/16" and the barbs on a QD gas-in assembly (part # KEG710) are 1/4". Under the info for this item it addresses this by telling you to either use 1/4" hose and stretch it over the barbs on the manifold, or use 5/16" hose and just clamp it extra tight on the QD gas assembly. I chose the latter and am not happy with how it works. It worked for about a week then my co2 tank was empty. My fault for not leak testing, but just wanted everyone to know they should watch out for this problem.
A third solution which I am going to employ is to replace the 5/16" gas-out barbs on this manifold with 1/4" barbs, that way you have 1/4" to 1/4" and you don't have to deal with hose that is the wrong size on one end.
It would be great if they offered a second version of this item with 5/16" gas in and 1/4" gas out for homebrew applications.
If you are using this with commercial kegs I am sure it would be great.
It a pretty cheap way to add some lines, but it is a solid well build piece of equipment too. Feels real nice. I used it so I could have two gas lines going at the same time in my single tap keggerator and it worked fine (the second tap just on a picnic tap line). Though you only get one pressure for both lines. I have since switched to a duel pressure regulator, but will keep it around for future use.
Good modular manifold with scalability. Adding an extra keg? No problem, just twist on an extra add on assembly (Item #: D1820). Be sure to use Teflon tape and check for leaks by submerging the finished manifold in a bucket of water.