Economy Parcel shipping: $12.99. This item does not qualify for free shipping.
Works with compatible regulated CO₂ systems across brands; no CarbonDoser machine required. Requires ¼-inch OD CO₂-resistant polyurethane tubing and sufficient pressure to overcome approximately 4 psi cracking pressure. Silicone tubing is not compatible. A check valve is already included with the CarbonDoser V2 regulator kit.
Help protect your CO₂ regulator from water backflow with the CarbonDoser precision check valve. This passive one-way valve needs no electricity or CarbonDoser electronic dosing machine.
Works across compatible brands: Use with other regulated CO₂ systems when tubing, pressure and application requirements match. It is not limited to CarbonDoser equipment.
- John Guest-style push-fit connections for ¼-inch outside-diameter tubing.
- Use correctly sized CO₂-resistant polyurethane tubing. Silicone tubing will not seal correctly.
- Approximately 4 psi cracking pressure: the system must provide enough pressure difference to open the valve, plus pressure required downstream.
- Corrosion-resistant internal components; disassembles for periodic cleaning.
Install with the flow arrow toward the aquarium or reactor. Inspect and maintain the valve according to the supplied instructions; mineral buildup can prevent it closing properly.
Includes: one check valve. Tubing, cylinder and regulator sold separately. The CarbonDoser V2 regulator kit already includes a check valve; this separate item is useful as a replacement or spare.
Shipping: Economy Parcel shipping is $12.99. This item does not qualify for free shipping.