uxcell Aquarium Fish Tank Plastic One Way Non-return Check Valves 12 Pcs Red Clear Control the flow of vital O2 from your pond aerator or aquarium air pump with this handy Manifold Taps Valve. Lever valve let you operate it easily With the nickel-plated material; The outlet of Air Lever Valve can be connected to aquarium tubing. Air lever valvecan be connected to aquarium tubing Nickel-plated lever Fishing Tank Valve can be used for aquarium and aquaculture applications