Stainless Steel Check Valve

The Stainless Steel Check Valve is a critical safety component for CO₂ injection systems, designed to prevent backflow and protect your equipment. Whether you're running a CO₂ system for a planted aquarium, this durable check valve ensures that water does not siphon back into your regulator, solenoid valve, or other sensitive equipment, especially during power outages or when the system is turned off.

Unlike plastic check valves that degrade over time, this high-quality stainless steel valve is corrosion-resistant, ensuring long-term durability and reliability. Its compact, easy-to-install design makes it a hassle-free solution for any aquarium CO₂ setup, providing peace of mind and maintaining the efficiency of your system.

This check valve is compatible with standard aquarium CO₂ tubing, specifically 4mm inner diameter / 6mm outer diameter hoses, which are the industry standard for CO₂ systems.

Key Features

• Backflow Prevention for CO₂ Systems – Protects your CO₂ regulator, diffusers, and solenoids from water siphoning back into the system.
• High-Quality Stainless Steel – Corrosion-resistant and durable, lasting significantly longer than plastic alternatives.
• Industry Standard Sizing – Designed to fit 4mm inner diameter / 6mm outer diameter tubing, the most commonly used size for aquarium CO₂ setups.
• Compact & Easy to Install – Small, lightweight design allows for seamless integration into your existing tubing setup.
• Reliable & Efficient – Prevents equipment damage and ensures consistent CO₂ injection for optimal aquarium plant growth.

How It Works

1. Connect the Check Valve – Install in your CO₂ line, ensuring the correct flow direction (marked on the valve).
2. Prevents Water Siphoning – Stops water from flowing back into your regulator, solenoid valve, or other critical components, protecting your system.
3. Ensures System Efficiency – Maintains stable CO₂ delivery by keeping gas moving in one direction.

Why Choose a Stainless Steel Check Valve?

Unlike standard plastic check valves that weaken and crack over time, this stainless steel version is built to last and resistant to wear, providing long-term reliability. Specifically designed for high-pressure CO₂ systems, this check valve ensures your equipment stays safe while keeping your aquarium system functioning optimally.

Note: This check valve is intended solely for CO₂ systems and is not suitable for standard aquarium air pumps.