| Brand | unbranded |
|---|---|
| Type | / |
Check the listing for details. For CO2 Equipment Non Return Water For 4mm Pipe Aquarium Check Valve Diffuser. Condition: New. Listed at 9.99 USD. High efficiency: It can effectively avoid liquid backflow and make the CO2 flow more stable. This high efficiency and practicality make it very useful in a variety of industrial applications. Purpose: Suitable for connecting 4mm pipes.