Purpose and core function CO2 MIG flow regulator designed for professional WIG (TIG) and MIG welding applications. Controls shielding gas flow with a visible floating-tube indicator and an adjustable range from 0 to 25 liters per minute (lpm). Why you need it Stable, accurate gas flow reduces porosity and improves weld consistency, especially when welding mild and low-alloy steels with CO2 shielding. Built without a diaphragm for fewer failure points and lower maintenance than diaphragm-style flowmeters. Solid-copper construction resists corrosion and provides long-term durability in workshop or field environments. Key benefits at a glance Precise adjustment: 0–25 lpm range lets you set the exact flow needed for common MIG/WIG tasks. Clear visual feedback: the tube moves up and down to show real-time flow, making adjustments quick and reliable. Rugged materials: full-copper body for durability and dependable performance. Broad compatibility: compatible with Lincoln, HTP, and most other welders that use CO2 gas supply. Practical attributes Function: CO2 flow regulation with visible floating-tube indicator. Compatibility: Designed to work with major welding brands including Lincoln and HTP, as well as most other CO2-capable welders. Material: Full copper body for strength and corrosion resistance. Performance: Adjustable from 0 to 25 lpm for finer control of shielding gas. Typical applications Industrial fabrication: Maintain consistent CO2 flow for MIG welding structural and sheet components to reduce defects and rework. Automotive repair and bodywork: Fine-tune shielding gas for spot and seam welding on steel panels using CO2. On-site maintenance and field service: Durable, low-maintenance regulator for portable welders used in repair and installation work. What sets it apart No diaphragm design lowers the chance of failure and drift, giving steadier flow control over time. Solid-copper construction offers improved longevity versus cheaper alloy or plated housings. Simple, accurate visual indication via the floating tube makes it easy for welders to verify flow at a glance. Use notes Intended for CO2 shielding gas in MIG/WIG setups. Verify compatibility with your welder model and gas fittings before installation.