Aquarium CO2 Check Valve for 4/6mm Polyurethane Tubing, One-Way Backflow Protection and Push-In Installation

Keep water from flowing back toward the regulator and solenoid in your aquarium CO2 setup. This precision check valve allows CO2 to travel in one direction, protecting important system components from backflow damage.

Push-in connectors make the valve straightforward to fit inline, while compatibility with 4/6mm CO2-resistant polyurethane tubing supports a secure, suitable setup.

Key Features

• One-way CO2 flow blocks water backflow, helping protect costly regulators and solenoids from damage during everyday aquarium care.
• Resistance to pressure above 100 psi makes the valve suitable for the demands of a pressurized aquarium CO2 system.
• A low 1 psi cracking pressure allows the valve to open without requiring high pressure, supporting practical inline CO2 delivery.
• Easy push-in connectors simplify inline installation, making it easier to add protection to the tubing run.
• Compatibility with CO2-resistant 4/6mm polyurethane tubing provides a clear fit requirement for safer setup. Silicone tubing will not hold and must not be used.

Specifications

• Brand: CO2Art
• Function: One-way CO2 flow
• Pressure resistance: +100 psi
• Opening cracking pressure: 1 psi
• Connection type: Push-in connectors
• Installation: Inline
• Compatible tubing: CO2-resistant polyurethane tubing, 4/6mm
• Incompatible tubing: Silicone tubing
• Variant: Default Title

Add this check valve to a compatible aquarium CO2 line for simple, targeted backflow protection. Verify that your tubing is 4/6mm CO2-resistant polyurethane before installation.