AR/CO₂ gas regulator, 2 rotameters — twin flow tubes for argon and carbon dioxide
The AR/CO₂ gas regulator, 2 rotameters from REAL GAZ is a twin-tube design that shows two gas flows on the same instrument.
It is used where the welder or process engineer wants proof that both gases are actually flowing at the intended rate, not just a pressure reading.
It is used where the welder or process engineer wants proof that both gases are actually flowing at the intended rate, not just a pressure reading.
The family is built to ISO 2503 principles and used with EN ISO 14175 shielding gases such as M20 and M21 mixtures, for industrial welding and fabrication.
Where two cylinders feed one torch, the ratio is the ratio of the two flows. For example, 4 l/min of CO₂ with 16 l/min of argon gives roughly 20 percent CO₂ in a total of 20 l/min. This is only approximate, because rotameter accuracy is typically a few percent of full scale, and flow tubes need to be read at the same line pressure at which they were calibrated. Where tight composition control is needed, a factory-blended mixture is the better route. Whenever readings look unstable, check the cylinder valves, hose kinks and tube cleanliness first; most faults trace to those simple causes rather than the regulator itself.
🏭 Where Twin Rotameter Regulators Are Used
- ⚙️ On-site gas blending — argon and CO₂ are fed from separate cylinders and combined in a measured ratio;
- 🔬 Weld research — different mixture ratios are compared under recorded conditions;
- 🏭 Multi-station workshops — each station checks its own flow against the shift plan;
- 🚀 Maintenance fleets — service teams verify gas delivery before starting critical repairs.
💡 Why Choose REAL GAZ
- ✅ Independent control — each tube has its own needle valve for the gas it measures;
- 🧪 Checks two gases — helps show if a hose, cylinder or regulator is blocking either supply;
- 🎯 Easy to read — vertical tubes with scale markings in l/min;
- 🔒 Sturdy build — metal body and protected tubes withstand workshop use;
- 📄 Certificate of Analysis (CoA) — supplied with every order of gas cylinders.
🔬 Quality Control & Safety
- calibration of both tubes;
- leak test at needle valves and joints;
- pressure stability under varied flow;
- check for correct labelling by gas.
Mix ratios on site depend on the accuracy of the flow tubes, so for repeatable results a pre-blended certified mixture is recommended. Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
REAL GAZ supplies the AR/CO₂ gas regulator, 2 rotameters and pre-blended shielding gas cylinders to customers in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA, so users can choose between on-site blending and ready mixtures.
REAL GAZ — See both gases, trust both flows.