Smith Proportional Gas Mixers


Proportional Gas Mixers
Typical Applications

  • Weld and purge with a variety of gases.
  • Accurate TIG and MIG weld shielding.
  • Mixed gases for the foundry industry.
  • Accurate mixing of gases for the aerospace industry.
  • Laboratory applications.
  • Gas mixtures for plasma arc cutting machines.
  • Controlling the atmosphere in heat treat ovens.
  • Mixture accuracy is unaffected when inlet pressure remains within specified limits.
  • Reduced set-up time eliminates the need for premixed gases.
  • Easy operation, training and supervision.
  • Requires no electricity.

Eliminates stocking and handling premixed gases.
Various welding jobs require different mixes for the best performance.  On-site mixing of gases with Smith's proportional gas mixers eliminates inventorying and handling of costly premixed gases.  Individual gases can be mixed for specific welding or other industrial requirements resulting in improved performance.  Controlling the mixture of gases will result in lower cost and better controlled welds.

Reduces Set-up Time
No need to change cylinders, regulators, flowmeters or hoses when changing from one range of mixed gas to another.  Just turn the dial for whatever mixture you need.  No critical adjustment of flowmeters or complex calculations needed to achieve proper mixture rates.

 

NOTE: Mixture adjustment or inlet pressures outside of rated ranges may result in diminished mixer performance.

Accurate - No Gas Separation!
Premixed gases may separate ( stratify ) into the individual gases within the cylinder.  Smith's proportional gas mixer eliminates gas stratification to always give you an accurate mixture.

Easy Operation, Training & Supervision in Welding Applications
Whether you are using a single welder or a manifold system supplying many welders, operation is simple and easy to use.  Ideal for training all personnel reguarding shielding gas mixtures because they can see the effect of various gas mixtures on weld appearance, quality and penetration.  Supervisors can easily note at a glance if the operator is using specified gas mixture.

Three Series of Mixers Available:
2-Gas Mixers in Standard and
High Capacity Models and 3-Gas Standard Models

The standard 2-gas series provides flow up to 180 SCFH and is suitable for most applications.  The high capacity two-gas series provides flows up to 900 SCFH and is designed primarily for large manifold sysems with station flowmeters in the welding industry.  It is ideal for other industrial applications requiring high flow rates.  The standard three-gas series provides flows up to 180 SCFH, high capacity series up to 600 SCFH and are designed for applications that require three gas mixtures.



SPECIFICATIONS
Flow Rate 10-180 SCFH
4.8-85.7 LPM
Flow Rate Subdivisions 10 SCFH
4.8 LPM
Inlet & Outlet
Connections
5/8"-18 RH
Internal
Inlet Filters, Mixer
protection only
60 Micron Nominal
PN: 3291
Case Material 304 Stainless Steel
Weight 8 lbs / 3.5kg
Size ( WxDxH ) 5-1/4" x 10" x 6-1/4"
133mm x 254mm x 165mm
STANDARD 2-GAS MIXER - 180 SCFH
All gases used with the mixers must be compatible with Buna-N, Copolymer Acetal, Nylon and Polyethylene.
NOTE: Outlet pressure, factory set at no flow.
Buy
Price
Stock No.
Gases
Adjustment
% Range
Required
Inlet
Pressure
Gas
PSIG / Bar
Outlet
Pressure
Without
Flow PSIG / Bar
Regulators
Hoses
$1756.00
299-006-1C
Argon
CO2
0-100%
100-0%
105-115
7.3-7.9
45 / 3.1
N/A
N/A
$1756.00
299-006-3C
Argon
Helium
0-100%
100-0%
105-115
7.3-7.9
45 / 3.1
N/A
N/A
$1800.00
299-011-1B
Argon
Hydrogen
50-100%
50-0%
105-115
7.3-7.9
50 / 3.5
N/A
N/A







On orders over $200.00.
CONUS, Standard Ground Shipping
Orders may take up to 5 days to ship.
Prices are subject to change.
All products subject to availability.

Last update 23 March 2016