Description
✅【Operating System】: Non return check valve is suitable for CO2 supply system in fish tank, aquarium and others. Aquarium CO2 check valve can protect the power head from the water flowing back which is caused by power cut. ✅【Check Valve Function】: Water check valve can prevent the aquarium from water flowing back, which is caused by the decrease, and keep the function and service life of Carbon dioxide bottle. ✅【Take Effect】: When used in the Ozone generator, air check valve can prevent the Ozon
