Check Valves are from
www.aquatic-store.com
Dennerle Check Valve - $ 17.99
A very high-quality German CO2 check valve for freshwater or marine applications. Secure compression fittings which takes 4/6 mm (ID/OD) or 1/8" airline tubing
KBCV co2 Dennerle Check Valve
Weight: 1.00
Metallic Check Valve - $ 38.99
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. Secure compression fittings which take 4/6 mm (ID/OD) or 1/8" airline tubing
KBCV met check valve
Weight: 6.00
Anyone hear about these or know if they are good check valves for Co2 Tanks?
I like the first ones price, but dont know if its a good one or if the C02 will go thru it overtime.
Thanks