Skip to Main Content
Canadian
Canadian owned and operated

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

Packaging: 1 per ea
$173.88/ea $115.10/1 per ea only $115.10/eaSave 34%

Usually ships within 3-5 business days

OVERVIEW

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.

Additional Information
Packaging Description:1 Per Ea, 1 per each
Item:Flowmeter
Used On Which Gas:Argon or Weldmix
Gas Type:Argon, Argon/CO2 Mix, Helium
Inlet Connection:1/4" NPT Female
Outlet Connection:5/8"-18 RH Female
Warranty:3 Years
----- new values below ----
Gas Type:Argon, Helium, Argon/CO2 Mix
Inlet Pressure:50 PSIG
Inlet Connection:1/4" NPT Female
Outlet Connection:5/8"-18 RH Female
Flow Tube Material:Polycarbonate (Lexan)
Warranty:3 Years
brand:Miller
item:flowmeter
used-on-which-gas:argon-or-weldmix
packaging-description:1-per-each

INCLUDED

  • 1 x H2231A Standard Duty Flowmeter (50 PSIG)
  • Installation Instructions
  • Warranty Information

APPLICATIONS

  • MIG (GMAW) Welding Shielding Gas Control
  • TIG (GTAW) Welding Shielding Gas Control
  • Pipeline Gas Drop Stations
  • Central Gas Distribution Systems
  • Automotive and General Fabrication Shops

FAQ

The Smith H2231A flowmeter is calibrated for an inlet pressure of 50 PSIG.

The scale is marked for Argon, Helium, and Argon/CO2 mixes. While it can physically pass straight CO2, the scale readings would not be accurate without a conversion factor.

No, this is a flowmeter only with a 1/4" NPT inlet. It must be attached to a regulator or a pipeline drop that reduces the cylinder pressure to the working pressure (50 PSIG).

The flow tube is made of shatter-resistant polycarbonate (Lexan), which is much more durable than traditional glass tubes.

It features a 1/4" NPT female inlet and a standard 5/8"-18 RH female outlet (CGA 032) for the gas hose.

Yes, the exclusive ball-centering flow tube design allows for accurate readings even if the tube is tipped or not perfectly vertical.

It is covered by the Miller/Smith True Blue 3-Year Warranty.

CATALOGUE & SPEC SHEETS

Spec Sheet