Click to expand Tap to zoom Aqua One Airline T Control Valve Save $-3.99 $3.99 | / 2pk - $3.99 2pk Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Aqua One Airline T Control allows you to split air coming from your Air Pump into two even ais streams to two separate Airstones.