The company Winy/ZRDR specializes in the production of CO2 pressure reducing valve generators and CO2 equipment Aquarium CO2 pressure reducing valve/solenoid valve regulator Features of CO2 pressure reducing valve: 1: Equipped with dual clocks, the working status is clearly displayed 2: Polished, refined, refined and durable stainless steel finish 3: Low temperature solenoid valve, corrosion resistant, long service life 4: Professional sealing technology, high adjustment accuracy 5: High precision adjustment, easy to reach 1 bubble every 3 seconds International model: W21.8 G5-8 CGA320 M22 G3/4 Note: purchase the corresponding nut model to avoid the nut docking problem The threaded connection must be confirmed before ordering. Standard: Material: aluminum alloy+304 stainless steel Size: as shown in the figure Power supply: AC220V / AC110V check the power supply used before purchase Plug: EU/US/UK/AU plug Since this is a manual measurement, please consider 1-2cm and make sure you don't mind before orderingReminder: After the first installation, first turn on the power supply let the solenoid valve work first, and then turn on the air pressure of the cylinder valve!If you have any questions, please contact us Support wholesale, please contact us if needed