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CO2 Brass Check Valve

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This item is in stock in our East and West Coast warehouses

$43.49  


KL3115

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Korallin

These are the highest quality industrial-grade Brass Check Valve from German Air Pressure Systems. They are heavy-duty enough for food-grade liquid as well. Just like you, we also thought that these were unnecessarily overkill for aquaristic purposes, but it has been proven that these are the ONLY qualified Check Valves for protecting your expensive CO2 equipment (Regulator & Cylinders) from saltwater with a pressurized Kalkreaktor pushing it backward vigorously. Takes 4/6 mm (ID/OD) or 1/8" airline tubing.


Manufacturer Info

Korallin
Korallin is a German based company who is a manufacturer of specialized aquatic components and accessories for the advanced marine aquarist.

Accessories for CO2 Brass Check Valve


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11 Reviewers (46%) would recommend this

Overall Rating:

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“Agree - do not buy!”
1.0

Looks robust. But after 3 failures I purchased less expensive plastic valve. Plastic works great after 2 years.

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“Don't buy it”
1.0

I don't have salt water aquarium, but I have freshwater plant aquarium. At first, I thought it should be the best check valve in the market. Finally, I find out that, no, it's the best check valve. Why? When I figured out that my CO2 system had problem, I thought that should be my CO2 regulator ...Read More

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“DO NOT BUY!”
0.5

Purchased this in a kit with a calcium reactor, and had a very hard time setting up and adjusting the bubble count and maintaing pressure. Turns out the product was defective from the beginning. It would not hold pressure or maintain a consistent bubble count. It would never restart after my cont...Read More

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“failed quickly”
0.5

First thing I noticed was that the pressure required to "open" valve was around 5PSI. This was with a Geo 624 calcium reactor with Maxijet 1200 feed pump, Harris 2 stage regulator. When the bottle emptied in ~ 3 months the check vavle fialed and allowed water into my equipment. What more c...Read More

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“CO2 Brass ChecK Valves”
0.5

This was my 3rd replacement for the brass check valve that came with the Koralin calcium reactor all wich failed. I switched to the Dennerle check valve and have been very happy with the results. When ever my tanks have emptied water found its way into the valve. Sorry for the poor review but it jus...Read More

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“Works for a while then fails”
2.0

I have owned a calcium reactor for several years now. I have had 2 or 3 of these brass check valves fail over time. It will work for a while then it starts locking up and not allowing CO2 flow. This makes dialing in the bubble/minute count a huge issue. I know it is the check valve and not the r...Read More

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“locks up”
1.0

these dont last more than a couple of months, tired of buying them, gonna try one of the cheaper ones and see if there any better.

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Overall, others give this:

11 Reviewers (46%) would recommend this

Overall Rating:

5.0  Star
 2
4.5  Star
 0
4.0  Star
 1
3.5  Star
 0
3.0  Star
 0
2.5  Star
 0
2.0  Star
 2
1.5  Star
 0
1.0  Star
 3
0.5  Star
 3