WYIN Aqua CO2 Check Value (None Return Valve)

Prevent water backflow and protect your CO2 regulators and equipment with the WYIN Aqua CO2 Check Valve (Non-Return Valve).

• Secure push-to-connect design built for standard aquarium CO2 tubing.

• One-Way Flow Protection: Reliably stops aquarium water from siphoning back into your CO2 system.

• Standard Compatibility: Fits standard 4/6mm aquarium CO2 and airline tubing.

• Durable Build: Crafted with a corrosion-resistant body designed for long-lasting performance.

(Note: Designed for pressurized CO2 systems; not recommended for low-pressure standard air pumps.)