CV4 – non-return valve
One-way check valve for aquarium air and CO2 lines. It lets gas pass in one direction only and blocks water…
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Find a productProduct description
This Tetra CV 4 check valve is intended for aquarists who run air or CO2 lines and want to keep tank water out of their aeration or dosing equipment. It is listed in the Aeration category of the Tetra underwater range.
Why it matters
- One-way flow: the valve's construction passes air or CO2 in one direction only.
- Equipment protection: it stops water from the aquarium flowing back toward the connected device.
- Works with other media: the design is not limited to air, so it can also be used with CO2.
- Simple inline fitting: it sits in the line between the source and the tank, with no separate control needed.
Specifications
- Brand: Tetra
- Model: Tetra CV 4 Check Valve
- EAN: 4004218608085
- Weight: 0.01 kg
What it works with
The valve belongs to the aeration group, so it is intended for air pump setups in freshwater and planted aquariums. Because it also passes CO2, it fits lines that feed gas into the tank. Check the hose and fitting dimensions against your own setup before installation.
Technical specification
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Frequently asked questions
It is a one-way check valve, so it lets air or other media flow through in only one direction. Its design keeps the flow from reversing.
Yes. The valve is designed to protect your equipment from water flowing back from the aquarium.
According to the supplier's description, it passes CO2 and other media as well as air, but only in one direction.
It weighs 0.01 kg and costs 18.99 PLN gross.
The symbol is Tetra CV 4 Check Valve and the EAN is 4004218608085. Use these when searching for or ordering this exact item.
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