The pneumatic check valve can prevent the aquarium from backflowing water, which is caused by the decrease, and keep the function and life of the carbon dioxide bottle.NOTICE: Used only for carbon dioxide steel pressure vessels and cannot be used for DIY and oxygen pumps as the pressure is not sufficient to operate the valves. When it is used in the ozone generator, the air check valve can prevent the ozone from flowing back to the air pump and eroding the propeller. The check valve can protect the power head from water backflow caused by power failure. The simple check valve is easy to install, requires no additional tools, and can be attached to any place you want in seconds. These stainless steel one-way check valves are suitable for CO2 supply system in aquariums, fish tank and others.
