The RoboVent Extractor™

Clean Air Matrix

RoboVent engineers are experts in every category of air filtration and ventilation. The four categories below represent the major options for treating your contaminated air. RoboVent has designed solutions for each of these categories and has manufactured air filtration systems of unrivaled quality.

For more information about these categories, see Indoor Air Quality 101.


Large blowers and air filtration equipment draw contaminated air from the plant (typically at the ceiling level), filter it and return it to the plant. This is a proven solution in plants welding large parts with overhead cranes. It reduces the haze in the air, resulting in a cleaner working environment, with no negative pressure or heat loss.


Air in the immediate area of the welding activity is captured in a hood system, then filtered and returned to the plant. This is the best solution whenever possible. It allows for a more flexible system and removes the smoke directly from the operator's breathing zone. There are many types of source capture, including overhead hoods, crossflow hoods, fume arms and fume guns, some of which work better than others.


Large exhaust fans draw contaminated air from the plant and exhaust it directly into the environment, typically through the roof or walls. This is a traditional method and often results in negative air pressure. Also, it is very difficult to climate-control your plant and the system may not work well in the winter.

Air in the immediate area of the welding activity is captured in a hood, sent through ductwork, and exhausted directly into the environment. This is a lower capital cost alternative to filtration, but tends to result in high operating costs and large, unsightly ducting systems that work less efficiently with modifications. It also results in negative pressure problems.

Safe extraction of welding fumes at the source of the weld gun

The RoboVent Extractor reduces the welder’s exposure to welding fumes by 90-95%.

Welding fumes are a health hazard, and welders who inhale too many fumes run a higher risk of developing asthma, bronchitis, COPD and cardiovascular disorders. As a result, the U.S. and other international regulatory agencies are moving to more stringent thresholds for weld fume exposures.

The American Conference of Governmental Industrial Hygienists (ACGIH) recommended limit for welding fumes in the workplace is 1 milligram of welding fumes per cubic meter of air (1 mg/m³), over the span of an 8-hour work day.

This norm is, in practice, exceeded in many workplaces. To comply, companies may adopt various measures including room ventilation, mobile extraction hoods, or personal protective equipment such as dust masks or ventilated helmets. The effect of these is often insufficient:

  • extraction hoods are not placed close enough to the source
  • the objects to be welded are too large
  • the welder is very mobile
  • welding may take place in enclosed areas (e.g. the hold in a ship)
  • personal protective gear is not used correctly

In these cases, an integrated welding fume extraction provision in the welding gun is a more effective measure that is easier for the welder to apply independently in comparison to other means.

The RoboVent Extractor consists of a welding gun with built-in  fume extraction. The gun can be connected to a central extraction system or to a stand-alone version without any problems. One advantage of the RoboVent Extractor gun integrated with a RoboVent hi-vac collection system is that it can be used in different workplaces, such as in ships’ holds or tanks.

The RoboVent Extractor reduces the welder’s exposure to welding fumes

by 90-95%.*

* This applies to (pulling) underhand welding. The reduction in (pushing) overhand welding and very swift horizontal movements may be slightly less.

Tested by the R&D institution TNO in the Netherlands.


Where and how?

The RoboVent Extractor is intended for use in MIG and GMAW welding processes that employ shielding gases. The gun will in all cases deliver an improved performance in comparison to current guns with source suction.

RoboVent Extractor Fume Gun

How it Works

AFaster Gas Flow Due to the design of the gas nozzle at the inside, the shielding gas comes out faster than normal. The combination of the faster gas flow with the correct extraction flow at the gas nozzle gives a perfect weld in all positions.

BIntegrated Fume Extraction The RoboVent Extractor is a welding gun with integrated fume extraction. The gun can be connected to a central extraction system or to a stand-alone mobile extraction unit without any problems. The advantage of a mobile extraction unit with an integrated filtration system is that it can be used in different workplaces.

CFlexible and Maneuverable  A ball-and-socket joint between the gun handle and the hose offers flexibility and maneuverability. The RoboVent Extractor is a very light gun and weighs only 2.86 lbs(1.3kg). Due to the small size of the handle, the welder does not feel any difference between the Extractor and a standard welding gun.

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