Aquarium water valve to the CO2 system diffuser

1. The necessary parts for your air pump aquarium O2 system

2. Compatible with standard aquarium air pipe of 4mm inner diameter

3. Protect you air pump by preventing aquarium water from back siphoning during a power outage

Item Describe

1. 100% Brand New and High Quality

2. Type: Plastic Check Valve

3. Material: Plastic

4. Size: 4mm Inner Diameter

5: Suitable for PU pipe with inner diameter 4MM

Package includes:

5pcs x Plastic Check Valve