Protect your CO₂ system with this durable, backflow-preventing one-way valve. Built for standard 4/6 mm tubing and rust-resistant performance.
$8.95
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Stainless Steel CO₂ Check Valve
This compact stainless steel CO₂ check valve is designed to prevent backflow in pressurized aquarium CO₂ systems, protecting regulators, solenoids, and other upstream equipment from moisture intrusion. The internal spring-loaded mechanism allows reliable one-way flow under CO₂ pressure while maintaining a secure seal when pressure drops.
This valve is intended specifically for pressurized CO₂ applications and is not suitable for low-pressure air pump systems.
Important Note
Not recommended for air pump use. The internal spring pressure may be too strong for standard air pumps and air stones.
Key Features
• Stainless steel construction for corrosion resistance and long service life
• One-way flow design to prevent backflow into regulators and solenoids
• Compatible with standard 4/6 mm aquarium CO₂ tubing
• Inline installation with clearly marked flow direction arrow
• Designed for pressurized CO₂ systems only
Specifications
• Material: 304 stainless steel
• Tubing compatibility: 4/6 mm tubing
• Valve type: Spring-loaded one-way
• Application: Pressurized aquarium CO₂ systems
• Not suitable for air pumps or low-pressure air systems
What Customers Are Saying
Real reviews from Blue Zone Aquarium customers.
Verified ownerHealthy, vibrant, active, happy looking fish. Very satisfied ☺️
Verified ownerUnopened, in perfect condition. Haven't fed Sera Betta granules yet but excited to try it. It has rave reviews online. Very happy with my purchase.
Verified ownerHealthy, active Betta fish. Very curious and lots of personality. All his fins look healthy and he is swimming really well. Couldn't be happier with him. ☺️
Want to see something in person?
Give us a call if you’d like to stop by the shop sometime and take a look.
Blue Zone Aquarium is a home-based business operating out of a shop on our property,
our address is not posted publicly. We welcome local visits,
but pickup and shop visits are by appointment only
so we can make sure someone is available to help.
530-526-1532
support@bluezoneaquarium.com