The CarbonDoser Regulator is the most reliable CO2 regulator on the market. Instead of traditional needle valves controlling the flow rate, the CarbonDoser uses an electric solenoid that will open and close within a fraction of a second producing a single bubble. Super precise control with unmatched reliability.

The Milwaukee Instruments MA957 Solenoid Valve, CO2 Regulator with Bubble Counter also includes a needle valve and comes with dual gauge

ista has a wide variety of complete CO2 systems and individual components for assembling a CO2 system.