Premium Blue Glass One-Way Check Valve for CO2 Systems – Ensures precise gas flow control in planted aquariums with leak-proof performance.

High-grade borosilicate glass construction resists corrosion and maintains clarity under constant water exposure. Precision-engineered silicone diaphragm guarantees silent operation and long-term durability.

Ideal for preventing backflow in CO2 diffusion setups – safeguards equipment from water damage while optimizing plant growth. Compact inline design integrates seamlessly with tubing (4/6mm).

Wholesale advantage: Bulk pricing available for aquarium retailers and hobbyists seeking professional-grade accessories at unmatched value.