Aquarium Check Valve 12PCS One Way Air Valve Compatible with Fish Tank

1 Backflow Prevention: Good thermal performance, strong chemical stability, nontoxic and tasteless, can prevent gas or liquid backflow. 2 Strong Pressure Bearing Capacity: One way valve has enough pressure bearing capacity and rigidity to meet the actual use requirements within its proper range. 3 Corrosion Resistance: good ozone resistance, high temperature resistance and corrosion resistance, used in fish tank, food and beverage, chemical industry. 4 Perfect Replacement: This one way check valve is easy to replace the broken check valve, perfect replacement, stable performance. 5 PP Material: One way check valve is made of high quality PP material, which is wear resistant and durable, and can be used for a long time.

What's in the box
12 x Aquarium Check Valve