A very high-quality German CO2 check valve for freshwater or marine applications. A mid-level & mid-priced, quality check valve between the Metallic and the Plastic units. Takes 4/6 mm (ID/OD) or 1/8" airline tubing.
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...
Plastic check valve for water plant aquariums. The check valve is usually placed between the CO2 regulator and the bubble to prevent water from back-flowing to the regulator.
Prevents the damage of products from water backflow Features:
The patent double check valve design will keep your products from damage due to water backflow
Screw lock on will ensure that your tubing will not come lose and ...