H2231A - Smith H2231A Argon/Helium/CO2 Flowmeter, 50 PSI

Precision Gas Control for Industrial Welding

The Smith H2231A Standard Duty Multi-Scale Flowmeter is engineered to provide exceptional control and accuracy for shielding gas delivery in MIG and TIG welding applications. Designed specifically for systems operating at an inlet pressure of 50 PSIG, this unit is an essential component for welders demanding consistent weld quality and efficient gas usage. Unlike standard gauges that may fluctuate, the H2231A utilizes a precision flow-adjustment valve that allows operators to fine-tune gas flow to the exact requirements of the weld procedure.

Advanced Flow Tube Technology

At the heart of this device is a shatter-resistant polycarbonate (Lexan) flow tube. This robust material withstands the rigors of industrial environments better than traditional glass tubes. The tube features a triple-scale reading, allowing a single unit to accurately measure flow rates for Argon, Helium, and Argon/CO2 mixtures without the need for conversion charts. A standout feature of Smith Equipment's design is the exclusive ball-centering guide. This innovation keeps the float ball perfectly centered within the tube, preventing it from drifting off-center and providing false readings. This ensures that the flow rate you see is the flow rate you get, even if the equipment is tipped or positioned at a slight angle.

Safety and Maintenance

Safety is paramount in high-pressure gas systems. The H2231A includes a built-in rupture disc designed to vent pressure safely in the event of a high-pressure inlet surge, protecting the flow tube from catastrophic failure. Maintenance is minimized thanks to a packless O-ring flow tube seal, which eliminates the need for frequent tightening or packing adjustments. The unit features a standard 1/4-inch NPT female inlet, making it compatible with a wide range of regulators and pipeline drops. Whether integrated into a central gas system or attached to a cylinder regulator, the Smith H2231A delivers reliable performance backed by the industry-leading True Blue 3-Year Warranty.