Aqua One Gang Valve 3 WayIncrease the number of outlets from a single outlet aquarium air pump with the 3 way Aqua One Gang Valve. Easily split the air into 3 outlets so you can run 3 air driven devices at once.Independently control the air flow of each outletEach valve is adjustableIncrease oxygen around the aquarium.Simply connect a piece of airline tubing from the air pump to the SIDE of the gang valve. The air stones or air operated ornament will connect to the TOP of the gang valve with an additional piece of airline tubing. You can turn the knobs on the gang valve to individually adjust the flow to each outlet.