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CO2 Stainless Steel Check Valve

$7.99
$7.99
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Maximum quantity in stock reached.

  • Designed for Pressurized CO2 Systems
  • Prevents Water Siphoning Out of Aquarium
  • Durable Stainless Steel Construction
  • Essential for Power Outages

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.

The arrow on the check valve indicates the direction of airflow.

Customer Reviews

Based on 33 reviews
91%
(30)
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6%
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3%
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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.

P
PlaneFishGuy (Harvest, AL, US)
Best Check Valve I've Used

I purchased this product a second time after seeing the quality of the product on the first purchase. Its fit perfect with my standard airline setup and CO2 specific airline with no leaks. I wish you could get regular check valves of this same quality.

P
Pleco P. (Johns Creek, GA, US)
Solid and trustworthy

Much better than the plastic ones for sure! Gives piece of mind you won’t drain the tank into the living room.

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