General description The AlwaysH 2 stainless steel one-way check valves are designed to prevent backflow in various applications, particularly in aquarium systems. These valves ensure that water does not flow back into the CO2 supply system, maintaining the functionality and longevity of carbon dioxide bottles. They are also effective in preventing ozone from flowing back to air pumps, protecting equipment from potential damage. Technical specifications Material: Stainless steel Function: Prevents backflow in CO2 pipelines and diffusion pipes Installation Easy to install without additional tools Can be attached quickly to desired locations Usage Suitable for CO2 supply systems in fish tanks and aquariums Protects power heads from backflow during power outages