FZONE Aquarium CO2 Regulator AC Solenoid Mini Dual Gauge Display with Bubble Counter and Check Valve for US Standard CGA320 CO2 Cylinder

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Feature

DUAL GAUGES! Dual gauges allows for a more precise reading of inner tank pressure and working output pressure.
UPDATED SPLIT-TYPE DC SOLENOID! Newest 12V DC split-type solenoid instead 110V AC models, more safe and stable. NEVER noise, automatic turn on/off CO2 with timer.
HIGH PRECISION STRUCTURE! Fine tuning valve with knurling to precisely control the CO2 output. Made of hard aluminum alloy allow continuous usage without worrying about rust
BUBBLE COUNTER AND TOOLS INCLUDED! Bubble counter with check valve and tools are included to make the process hassle free.
ATTENTION! Suitable for standard North American fittings, CGA 320.