This is a three way Air Distributor / Manifold with check valves. Check Valves are very important so you will avoid beer traveling through your beer system!
This allows you to split your CO2 line from one into three!  Each with it's own controlled shut off valve.  This air distributor has pre-drilled holes, so that you can mount it to the side of your refrigerator.
The check vavle comes with or without check valves. 
Choose from the options at the bottoom of the page:

• No Nipples - $34.95
• Check valves with 1/4" nipples - $39.95
• Check valves with 5/16" nipples - $40.95