35-30-320 - Smith Series 35 Two-Stage CO2 Flowmeter Regulator with Anti-Freeze Heat Exchanger

Reliable CO2 Shielding Without the Freeze

Every welder who uses pure CO2 knows the frustration of a frozen regulator. You're in the middle of a long bead, and suddenly your gas flow cuts out because your regulator has turned into a block of ice. The Smith 35-30-320 Flowmeter Regulator is built specifically to solve this problem. By routing the gas through a specialized copper coil heat exchanger, it uses the warmth of the surrounding air to keep the CO2 flowing freely, preventing the dry ice blockages that plague standard regulators. This means you can run higher flow rates for longer periods without stopping to thaw out your equipment or investing in cumbersome electric heaters.

Beyond its anti-freeze capabilities, this is a precision instrument designed for professional fabrication. It uses a two-stage design, which is the gold standard for accuracy. In cheaper single-stage regulators, your gas flow can fluctuate as your tank gets low, forcing you to constantly adjust the dial. The 35-30-320 maintains a rock-steady flow rate from the moment you crack the valve until the tank is completely empty. This consistency translates directly to better weld quality, less spatter, and fewer defects caused by poor shielding coverage.

Durability is also a key focus of the Series 35. The flow tube is made from shatter-resistant polycarbonate and protected by a rugged housing, so an accidental knock in the shop won't put you out of commission. The flowmeter also features a self-centering ball, which is a huge quality-of-life improvement; it ensures you get an accurate reading even if your cart is parked on an uneven floor. Whether you are running heavy industrial MIG or precision fabrication, this regulator delivers the reliability and gas control you need to produce top-tier welds.