ANS Brass CO2 Check Valve 2pcs Per Pack

Description

ANS Brass Check Valve is an excellent check valve that prevents no water flows back to your CO2 Cylinder even under high pressurize CO2 output.
Check Valve prevents water from aquarium to flow back to your CO2 cylinder. It is important to have a check valve because if water enters the cylinder, it can cause rust in the interior of the cylinder and prevent proper CO2 refilling.
Please take note:
Brass check valve is not design for air pump usage
Related Article : A Complete Guide to Setup a CO2 system

Protecting your CO2 setup with the ANS Brass Check Valve

A check valve is cheap insurance, and this brass two-pack is what we hand Singapore hobbyists who have just invested in a CO2 cylinder and regulator. Its job is simple but important: stop aquarium water travelling back up the line toward your cylinder. If water reaches the cylinder interior it can cause rust and make refilling difficult, so a reliable valve on the line saves you an expensive headache down the track. The brass build holds up to high CO2 pressure without leaking or deforming.

This matters even more here, where monsoon-season power cuts can interrupt flow and create the pressure swings that let water siphon backward. Keeping a spare from the pack on hand means you can replace a tired valve immediately rather than risk a cycle without protection. Do note these are made for CO2 lines, not air-pump tubing, so keep them on the right system.

Browse related tools in our cleaning and maintenance range, and read our aquarium CO2 guide and our CO2 and air check valve comparison to set yours up correctly.