[Calestus]

For sale used dual stage CO2Art Regulator, US plug/CGA320:

(From their Website)
Advance Professional Aquarium CO2 Dual Stage Regulator and Solenoid Magnetic Valve

• Specially designed by Swiss Engineers for Aquatic use.
• This regulator minimize increase in output pressure as pressure drops in gas cylinder and will prevent end-tank-dump on every size CO2 Tank.
• With World Class Advance Precision Needle Valve by SMC as standard. Adjustable up to 1 bubble per 10 second.
• Low voltage 12V DC Integrated Solenoid Valve (Cool-Touch)
• Integrated power consumption electronic module, lower power consumption to 0.7W
• Power adapter with universal voltage 100V-240V and international interchangeable adapters
• Adjustable working pressure up to 7 bar
• Dual gauge pressure indicators (tank volume and flow pressure / working pressure)

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The peel on the high pressure gauge is just the protective plastic film, peeled back to illustrate this is pretty much new.

150, shipped.