Key Feature:
The airflow control valve for the aquarium is convenient for adjusting the gas volume of the air pump
Made of plastic, built-in seal ring
Suitable air tubing : standard 3/16'' airline tubing
Package includes:
20pcs air valves

The airflow control valve is convenient for adjusting the gas volume of the air pump;Suitable for fish tanks, aquariums, aquaculture and gardening system
Reliability material:Made of safety and healthy plastic,and won't have any adverse effects on your fish
Suitable air tubing : standard 3/16'' airline tubing;Valve interface is tightly attached to the trachea,prevent air leakage and slipping
Free Adjustment::Simply rotate the button to adjust the air flow rate
Easy to Install:Connect airline tubing to both ends of the valve;Twist the knob counterclockwise to open and clockwise to close it