ANS RHINOC CO2 Brass Check Valve (2 pcs/pack)
The ANS Brass Check Valve is an excellent check valve that prevents water from flowing back into your CO2 cylinder even under high pressure CO2 output.
This check valve ensures that water from the aquarium does not flow back into the CO2 cylinder. It is essential to use a check valve to avoid water entering the cylinder, which can lead to rust formation inside and interfere with proper CO2 refilling.
| Specification | Detail |
|---|---|
| Material | Brass |
| Quantity per Pack | 2 pcs |
| Function | Prevents backflow of water into CO2 cylinder |
FAQ
What material is the check valve made of?
The check valve is made of brass.
Does this valve work under high pressure CO2 output?
Yes, it is designed to prevent water backflow even under high pressure CO2 output.
Can this valve be used in an aquarium CO2 system?
Yes, it is specifically designed for use in aquarium CO2 systems to prevent water from flowing back into the CO2 cylinder.

Dylan Martin –
I installed the check valve in my aquarium setup and it has been working well. No water has flowed back into the CO2 cylinder even during strong output. The brass construction feels solid and the fit is secure. It’s a simple but effective solution for preventing rust.
Megan Knox –
The valve arrived quickly and fits perfectly with my existing CO2 system. I noticed no backflow after installation. It’s a reliable component that helps maintain the integrity of my CO2 cylinder.
Gordon Fisher –
After using this check valve for a few weeks, I haven’t seen any signs of water entering the cylinder. The design is straightforward and the brass material feels durable. It’s a must-have for any CO2 system.