Rhinox Brass Check Valve - Aquarium CO2 Diffuser Regulator Air Pump Tubing Metal
- No CO2 system is complete without it! - Takes 4/6 mm (ID/OD) or 1/8" airline tubing - High grade Brass Check Valve permits flow in one direction only. Mount inline. Compatible with our CO2 resistant tubing. Tubing can be softened with warm water for easy installation on valve. - made of brass - recommended for use with pressurized CO2 systems only
