Our one way check valve can prevent the aquarium from water flowing back, which is caused by the decrease, and keep the function and service life of Carbon dioxide bottle.
The one way check valve is suitable for CO2 supply system in fish tank, aquarium and others.
Made from premium stainless steel materials break and rust resistant and cleans easy. Small and compact, about 4cm long.
Suitable for CO2 with pressurized system, not for air pumps.