ADA Check Valve (one-way flow valve)

Description

This is a check valve that prevents water from flowing back into CO2 regulator. It is included to CO2 Bubble Counter and CO2 Beetle Counter. Check Valve is a consumable part that needs to be replaced with a new one approximately once a year.

ADA Check Valve for CO2 Systems in Singapore

This one-way check valve stops water from siphoning back into your CO2 regulator, protecting the equipment from costly damage. It comes built into ADA’s CO2 Bubble Counter and Beetle Counter, and as the maker points out it is a consumable, so plan to swap it roughly once a year as the internal seal softens. We treat it as cheap insurance: a single backflow event into a regulator can ruin far more than the valve itself.

For local hobbyists, the check valve matters even more during our monsoon season, when a power outage stops the CO2 flow and pressure changes can let water creep back up the line. A working valve guards against that scenario automatically. Fit it the correct way round following the arrow, and inspect it during routine maintenance; if bubbles start passing sluggishly or it shows any backflow, replace it rather than risk your regulator.

Browse our cleaning and maintenance range, and for the wider system read our aquarium CO2 guide and check valve guide.