Catalog 10/2025 Version www.engmar.eu

Innovative extraction solutions for the protection of welders WELCOME MESSAGE FROM THE DIRECTOR Dear clients, dear partners, It is with great pleasure that we present to you the new ENGMAR catalog. Our teams work with passion and devotion to offer you a wide range of innovative and high quality products to meet our industry's most demanding needs. At ENGMAR, we firmly believe in the importance of innovation. Continuous improvement of our solutions is at the heart of our strategy. This catalog reflects our commitment to providing you with ever more efficient solutions tailored to your expectations....

Summary Proven expertise since 1993_______________________________________________ 6 Welding fumes: effects on health__________________________________________ 8 General principles of fumes extraction_____________________________________ 12 High and low vacuum equipments_________________________________________ 20

Extraction at workstation level - low vacuum Low vacuum systems______________________________________________________ 86 General ventilation and residual smoke ventilation Ventilation systems_______________________________________________________ 110

Proven expertise since 1993

A ENGMAR I Innovative extraction solutions for the protection of welders ENGMAR is specialized in extraction systems for welding and cutting fumes since 1993. Whatever welding processes are used and whatever the industrial constraints, we provide customer specific solutions, enabling both production performance and worker protection. A complete range of air- and water-cooled extraction torches for MIG/MAG welding removes welding fumes and gases from the welder's breathing zone and prevent the fumes from entering the general workshop atmosphere. The extraction torches feature a wide range of torch...

WHAT ARE WELDING FUMES? During welding, hazardous substances in both particle form and gases are generated. These are mixtures, of which up to 95% arise from the filler material. The exact composition depends largely on the materials used and the processes applied. The nanoparticles generated are harmful for operators' health. There are acute risks (the effects of which result, in general, from short term exposure) and chronic risks (which result from prolonged / repeated exposure). THE RELEASED PARTICLES HAVE DIFFERENT SIZES: Fraction E: Mass fraction of all suspended particles that can be inhaled...

A ENGMAR I Innovative extraction solutions for the protection of welders A Identify risks1The risk prevention approach#TUTORIALUSE ALTERNATIVE COLD -JOINING TECHNIQUES The most efficient alternative to avoid exposure to welding fumes is to choose less emissive welding processes whenever possible. TECHNICAL EXTRACTION -SOLUTIONS In order to comply with workplace exposure limits, emissions must be captured as close as possible to the point of emission. A wide variety of extraction devices can be used for this purpose: • Extraction torches: They extract directly at the emission point and are therefore...

Current legislation Although general ventilation can help to control exposure by reducing background levels of fume, it is ineffective for controlling welder exposure directly. Consequently, ventilation that removes fume at source, commonly known as local exhaust ventilation (LEV), is the recommended method of fume control in the welding industry. Extracting fume at the source protects not only the welder, but also other workers by preventing the fume from entering the general workshop atmosphere. In order to protect employees from exposure to airborne chemical contaminants, chemical agent, the...

A ENGMAR I Innovative extraction solutions for the protection of welders 1Requirements of Standard 21904 The formula for calculating the induced speed: In order to guarantee the quality of extraction performance, EN ISO 21904 specifies the air velocities that must be maintained in the extraction area: It is assumed that a spherical suction zone forms around the extraction nozzles where the velocity is uniform. Based on the extraction volume Q and the distance L, the so-called induced velocity v can be calculated. Manufacturers of extraction torches are required to indicate the extraction volume...

A General Principles of Fume Extraction There are two distinct but complementary types of ventilation: «local» and «general» ventilation. To comply with workplace exposure limits, emissions must be captured as directly as possible at the point of emission. General ventilation then complements local ventilation. • Captures fumes at the point of emission • Avoids dispersion in the workspace • Prevents damage to the respiratory tract • Reduces investment operating and heating costs • Protects welders and other operators working in the same environment • Dilutes pollutants by introducing fresh air...

Extraction efficiency, separation degree and performance DISTANCE TO THE POINT OF EMISSION Extraction tables Extraction hoods BLH Extraction arms Extraction slit nozzles Extraction torches COMPARISON BETWEEN EXTRACTION TORCH AND EXTRACTION ARM DUSTS INSIDE THE WELDING MASK PER HOUR1 1 mg/h Without extraction With an extraction directly at the point of emission 1 G. Mertuk et al., (2003), Comparing the Effectiveness of Different Systems to Reduce the Amount of Smoke in the Welder Mask, CETIM 1G2870 / RT 37701 Welding Institute

Our recommendations Best practices for a efficient ventilation DIRECTLY AT THE POINT OF EMISSION, AS EFFICIENCY QUICKLY DECREASES WITH 1 CAPTURE DISTANCE ENGMAR recommends using extraction torches, as they capture fumes in close proximity to the weld pool. To suit your needs, other solutions such as extraction arms or extraction tables can be used to capture fumes from a greater distance. THE POLLUTANTS EMISSION AREA AS MUCH AS POSSIBLE 2 CONFINE TO IMPROVE EFFICIENCY AND REDUCE REQUIRED FLOW RATES We recommend grouping together operations that generate fumes in the same area. Separation can...