Two-piece stainless steel CO2 check valve - regulator for aquarium systems, prevents reflux.

The pneumatic check valve can prevent backflow in the aquarium caused by a decrease in pressure, thus preserving the function and lifespan of the carbon dioxide cylinder. NOTICE: Use only for carbon dioxide pressure vessels made of steel and cannot be used for DIY projects or oxygen pumps because the pressure is insufficient to operate the valves.

When used in an ozone generator, the air check valve can prevent ozone from flowing back into the air pump and corroding the impeller.

The aquarium check valve can protect the feed head from water backflow caused by a power outage.

The simple check valve is easy to install, requires no additional tools, and can be attached to any location of your choice in seconds.

These are one-way stainless steel check valves Suitable for CO2 supply systems in aquariums, fish tanks, and other aquariums.