Rhinox High Quality Brass Check Valve Aquarium Anti-backflow Non-Return Air CO2 Pump

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Best check Valve for co2 system. Not suitable for air pump. Fit with tubing 4mm inner diameter and 6mm outer diameter. Fit with Co2 Tubin.

  • Best check Valve for co2 system.
  • Not suitable for air pump.
  • Fit with tubing 4mm inner diameter and 6mm outer diameter.
  • Fit with Co2 Tubing