Manually control the flow of vital oxygen or turn the fuel pump on/off. Made of chrome-plated copper, air never escapes. Inlet diameter: 5 mm, outlet diameter: 5mm. Not suitable for CO2 systems. A check valve protects your air pump by preventing aquarium water from siphoning back during a power outage. The suction cups fit snugly on the air valve dispenser and standard tubing, holding the tank firmly. Package Contents: 1 5-way air distributor, 5 non-return valves, 6 suction cups.
