Azoo CO2 Check Valve

Azoo CO2 Check ValvePlastic check valve for water plant aquariums. The check valve is usually placed between the CO2 regulator and the bubble to prevent water from back-flowing to the regulator.Azoo CO2 Check ValvePlastic check valve for water plant aquariums. The check valve is usually placed between the CO2 regulator and the bubble to prevent water from back-flowing to the regulator.Product code: 691Item No. CO-AZ-CV