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Regulator Flow Meter: Shielding Cylinder Assemblies for Precision Welding
Quick Answer
A regulator flow meter with a shielding cylinder assembly gives you stable gas flow for TIG, MIG, and orbital welding. Accuracy is ±2% FS, and the protective shield prevents glass tube breakage. Send your gas type, flow range in L/min, and connection type to [email protected] for a quote within hours.
Why Shielding Gas Flow Must Be Precise
Even a small flow drop can cause porosity in stainless welds. A shipyard in Vietnam reduced rework by 30% after replacing a needle valve with our calibrated regulator flow meter. The assembly combines a balanced diaphragm regulator with a tapered tube flow meter. It holds flow steady even when cylinder pressure falls from 200 bar to 20 bar.
The Shielded Cylinder Design
Welding shops break glass flow tubes often. Spatter, falling tools, or a bumped cylinder crack the tube. We enclose the flow meter in a welded stainless steel shield cylinder. A window still lets you read the scale. A Thai food-grade pipe fabricator bought 12 units. After 14 months, zero broken tubes. The shield also keeps the calibration stable by protecting the internal frame.
Specifications That Matter on the Floor
Body: brass or 316SS. Inlet max 200 bar, outlet adjustable 0.5–8 bar. Flow ranges for argon: 0–15, 0–25, 0–50 L/min. Connections: W21.8, CGA 580, BS 341, or custom. Tube: borosilicate glass with PTFE float stops. Accuracy: ±2% FS standard, ±1.5% optional. Output: 4–20 mA two-wire loop powered, direct to PLC. IP65 with shield closed. Weight 2.8 kg.
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We calibrate each unit for your exact gas. A 75% Ar/25% CO2 mix needs a different scale than pure argon. Our bench uses mass flow references. For a Brazilian welding institute, we calibrated 30 helium units at 0–50 L/min. The scale is screen printed and resists acetone cleaning.
Where These Flow Meters Are Used
Shipyards, pressure vessel makers, pipeline contractors, and orbital welding services use them. A recent order of 80 units went to a stainless spooling yard in Oman. 50 units shipped to an Indonesian repair dock for CO2 welding. Pharma pipe welders choose 316L polished shields for hygienic wipe-down.
Frequently Asked Questions
1. Which gases can you calibrate? Argon, helium, nitrogen, CO2, and mixed welding gases. We also do forming gas for purge.
2. Digital display option? Yes, a digital flow meter with LCD, 4–20 mA and RS485 Modbus fits the same shield.
3. Recalibration interval? We suggest once a year. Send the unit back, we clean and recalibrate for a flat fee.
4. Stock and lead time? Common argon 0–25 L/min models ship in 3 days. Custom gases take 7 working days. We ship from Nanjing via DHL.
5. Price guide? Basic brass shielded unit around USD 98 for sampling. SS body with 4–20 mA starts at USD 178. Volume discounts from 20 pieces.
Request a quote now. Email [email protected] with your gas type, flow range, inlet pressure, and cylinder connection. Phone +86-135-1213-1526, Whatsapp 86-135-12131526, WeChat +86 13512131526. Silver Automation Instruments replies with a data sheet and price within one business day.
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