UNS Mini Dual Stage CO2 Regulator

The UNS Mini Dual Stage CO2 Regulator takes the high pressure sitting inside a CO2 cylinder and steps it down to a safe, steady flow for the aquarium. Its dual-stage design adds a built-in failsafe that guards against "end-of-tank dump" — the sudden pressure spike that can happen as a cylinder runs low, which is a common failure point on cheaper single-stage regulators. Finished in a compact space-grey housing, it’s built to take up minimal room in a stand or cabinet.

Key Features

• Dual-stage failsafe design helps prevent end-of-tank dump as the cylinder empties.
• Built-in 12V DC electronic solenoid — pair with a standard light timer or smart plug to automate the daily CO2 photoperiod.
• Adjustable pressure knob for fine-tuning working output.
• Pre-installed standard CGA320 adapter, plus an included paintball cylinder adapter, for use with either bulk refillable tanks or paintball cylinders.
• Also compatible with UNS Disposable CO2 Cartridges.

Product Specifications

• Finish: Space Grey
• Output pressure gauge range: 0–50 PSI
• Pressure relief (failsafe) trigger: 51–53 PSI
• Tank thread compatibility: Standard CGA320, paintball cylinders (adapter included), UNS Disposable CO2 Cartridges

What's Included

• UNS Mini Dual Stage CO2 Regulator
• Integrated electronic solenoid with 12V power adapter
• Bubble counter
• Standard CGA320 tank adapter (pre-installed)
• Paintball tank adapter
• Spare washer O-rings and setup tools