High QualityThis aquarium airflow diffuser is made of high quality stainless steel material, smooth surface, durable and sturdy, long service life. Easy to UseOur aquarium air pump accessory equipped with the flow control valve made of stainless steel precisely adjusts airflow and easy to operate. Bypass GasOxygen aeration pump accessories can be used for shunt gas. It could convert the airflow from 8mm to 4mm. Various types This stainless steel air control valve has various types for you to choose according to your needs. Widely used This one Aquarium air control valve is used for aquarium and aquaculture applications. The pneumatic lever valve can be connected to the aquarium line. Product This aquarium air pump separator is used for aquarium and aquaculture applications. 2-way air flow separator for aquarium Air inlet 8mm air outlet 4mm 4-way airflow separator for aquarium Air inlet 8mm air outlet 4mm 6-way airflow separator for aquarium Air inlet 8mm air outlet 4mm Adjust airflow precisely, easy operation. The air lever valve can be connected to aquarium pipes. The separator is connected to the air pump pipe and manually controls the large O2 flow or turns the air pump on or off.