Essential for prevent water flooding out of the aquarium
Durable stainless steel construction
This check valve can only be used with a pressurized CO2 cylinder. The air from a regular air pump will not be able to pass through it. A check valve is used within airline tubing to prevent water from siphoning out of an aquarium and into a CO2 regulator. Stainless steel check valves are durable and will hold up over time keeping your equipment safe from leaks. A stainless steel check valve is the best choice when using CO2 as it will hold up better than plastic over a long period of time.
Used for Pressurized CO2 Systems
If you are injecting pressurized CO2 gas into your planted tank using a CO2 regulator and CO2 cylinder, then this check valve is a must. It stops any water from siphoning out of the aquarium through the CO2 line whenever the CO2 regulator turns off or loses power. Save your floors from flooding with this simple check valve.
Easy to Install
To install the check valve, simply cut the airline tubing between the CO2 regulator and the CO2 diffuser inside the aquarium. Make the cut outside of the aquarium, just a couple of inches below the rim. Then install the check valve so that the arrow points from the regulator toward the aquarium.
Excellent product. Will definitely buy again as needed.
A
Andrew E. (Los Angeles, CA, US)
Works
I like the arrow that shows the direction of placement for the CO2 line. Easy to place. It works.
W
William W. (Blountville, TN, US)
Stainless steel CO2 check valve
Working great!
R
R
CO2 check valve
Much better than using the cheap plastic ones when running CO2. Water hasn’t gotten past yet. Going to be buying more for the rest of my tanks.
C
Casey (Saint Paul, MN, US)
Works like a champ!
Works just as you’d expect.
P
Patrick K. (Chattanooga, TN, US)
Works as intended
The valve works great! It connects to the tubing without any issues.
S
Steven S. (Birmingham, AL, US)
Quality Check Valve
Always pleased with my Aquarium Co-op purchases. Check valve was made of quality materials and great price. Just what I needed to complete my CO2 setup.
L
Levi L. (Renton, WA, US)
Very helpful for a CO2 setup
I got this for my small CO2 system as I was having trouble with back pressure building up overnight and then delaying the CO2 start time. Put this in line and that problem vanished. Highly recommend.
J
John H. (Bristol, PA, US)
These check valves changed my life.
Never have I laid eyes upon a more perfect check valve for CO2 lines. Be careful with these bad boys. They’re so awesome, you might throw up. I am in no way leaving this review for the 5% discount code.
Love, John
J
Jay (Silver Spring, MD, US)
Fixed my Leak
I am not a fan of things that leak. It’s never good. The stainless steel check valve from Aquarium Co-Op solved my disappearing CO2 issue. Replacing the plastic valve I had with this steel one immediately produced results. No more disappearing bubbles for this aquarium.
