The Blue Planet Bubbilo 2 way control valve is for joining and adjusting the air flow to ornaments, airstones or your air filter. You can attach more airline to have multiple items running off more valves.
The Blue Planet Bubbilo single control valve is ideal for one application in controlling airflow. It can also be used at the end of your 2way valves to complete the junction.
SIZES: 2 Way (2 piece pack); Single (2 piece pack)