Three-Way Aquarium Water Valve, Aquarium Water Change Exchange Connector, Water Flow Valve, Hose Connector Adapter for Pond Pump Streams

2 options: The 12mm valve is suitable for filter body inlet and outlet pipes with an inner diameter of 16mm and an outer diameter of 22mm; The 16mm valve is suitable for filter body inlet and outlet pipes with an inner diameter of 12mm and an outer diameter of 16mm.

Adjustable air tube connector: The plastic aquarium air pump is T-shaped, allowing you to control the oxygen volume by turning the valve to adapt the water environment to your aquarium.

Function: It can be used to perform quantitative water changes and can also be used to add water.

Wide application: It is suitable for changing the water in various filter barrels. Installation on the outlet pipe is recommended.