Bernard Clean Air Fume Extraction MIG Gun

Name: Bernard Clean Air Fume Extraction MIG Gun – Datasheet
Brand: Bernard
SKU: Clean Air

A fume extraction MIG gun that matches the BTB handle

The Bernard Clean Air fume extraction MIG gun is an industrial-duty capture solution for MIG (GMAW) and flux-cored (FCAW) welding. Bernard says it closely matches the weight, handle size and industrial-grade performance of the Bernard BTB semi-automatic air-cooled MIG guns, so welders can move between guns with little change in feel. It is rated 300, 400 or 500 A at 60 % duty with mixed gases and accepts wire from 0.023 to 3/32 in.

It is suited to heavy equipment, shipbuilding, fabrication and commercial truck and trailer work, where capturing fume at the source helps provide a cleaner and more compliant work environment.

Technical specifications

Parameter	Specification
Manufacturer	Bernard (ITW Welding)
Model	Clean Air fume extraction MIG gun
Processes	MIG (GMAW) and flux-cored (FCAW)
Rated output and models	CL30 300 A (max. wire 5/64 in); CL40 400 A (max. wire 5/64 in); CL50 500 A (max. wire 3/32 in)
Duty cycle	60 % with mixed gases
Wire size	0.023 to 3/32 in
Cable lengths	10, 15, 20 and 25 ft
Consumable series	AccuLock S, Centerfire (300 A only for small nozzles) or TOUGH LOCK
Contact tips, AccuLock S	0.035, 0.045, 0.052 and 1/16 in (T-A035CH to T-A062CH)
Nozzles	Large (3/4 in and 5/8 in bore) and small (1/2, 5/8 and 3/8 in bore) in copper or brass, with flush, 1/8 in or 1/4 in recess
Necks, straight handle model	Medium 45 degrees (2390049) and medium 60 degrees (2390050), supplied with the vacuum tube assembly
Liners	Front load (AccuLock S) or rear load liners
Power pins	Miller, Euro, Lincoln, Tweco #4 and Tweco #5
Nozzle shroud	Adjusts to one of four positions
Suction control	Suction control valve to balance suction with shielding gas flow
Vacuum hose	Crush- and snag-resistant, threaded connections, jacketed against heat and abrasion; ball and socket hose swivel
Spec sheet	Index No. CLA/1.8, issued March 2025

How fume capture is controlled

The nozzle shroud adjusts to one of four positions, and a suction control valve lets the welder balance suction against shielding gas flow so that the extraction does not pull gas away from the weld and cause porosity. The vacuum hose has threaded connections for easy replacement, is crush- and snag-resistant, and eliminates the need for a protective cover. A ball and socket hose swivel improves flexibility and reduces wrist fatigue, and the straight-handle model has a rubber overmold for comfort and control.

Bernard states the gun is compatible with vacuum systems from most major manufacturers. Capture is best when the gun is held directly above the weld puddle, as the spec sheet diagram shows.

Selecting the configuration

Pick the amperage model by wire size and duty first: CL30 and CL40 take wire up to 5/64 in, and CL50 takes wire up to 3/32 in. Then choose the cable length, the consumable series, the contact tip and wire size, the power pin for the feeder, and a front-load or rear-load liner. Several parts are listed as available through the Bernard configurator, so a complete order code should be confirmed there.

Documents and quotation

The attached Bernard Please also tell us which vacuum extraction unit will be connected. gives the ordering information and parts listed on this page. For a quotation please send the model, amperage, cable length, neck and handle options, the wire type and diameter, the consumable series and the feeder connection you need. Related products are listed under TIG torches and MIG guns.

Bernard product groups

The range covers semi-automatic air-cooled guns such as BTB, TGX, S-Gun and PipeWorx, water-cooled T-Gun and W-Gun models, fume extraction guns, the IronPro self-shielded flux-cored gun, and the AccuLock, Centerfire and TOUGH LOCK consumables, liners and necks that go with them. Bernard lists offshore oil and gas, construction and infrastructure, heavy equipment, rail and ship among the industries it serves.

Frequently Asked Questions