Skip to main content

Push-Pull system: the ideal solution for large parts


Delmet SA, headquartered in the French-speaking part of Switzerland, welds parts into one another, including attachments for use in the manufacture of bells. The company’s fleet of machinery is capable of finishing large parts weighing up to 20 tonnes. The company was founded in 1984.

The challenge

Delmet was already acquainted with welding fume extraction, but its use of mobile units equipped with an extraction arm was far from ideal. This kind of source extraction system is more suited to workbenches with relatively small parts. By contrast, Delmet handles primarily large workpieces and welds steel, stainless steel and aluminium.

The solution

The high temperatures cause the welding fumes to rise and form a ‘welding fume blanket’. This welding fume blanket usually forms at a height of four to six metres, the height at which the temperature of the welding fume particles is the same as the ambient temperature.

A Plymovent suction/blow system uses a continuous control system to move, filter and recirculate the welding fume blanket. This prevents the welding fume particles from cooling and descending back down to the ground, resulting in a clean working environment. At Delmet, the duct is installed at a height of 4,5 m below the craneway. The system is a parallel system, with a filter system and fan installed on either side of the production hall. 13 suction grids and 13 outlet grids on each side of the production hall ensure perfect air circulation with approx. 5 air changes per hour.

The SCS filter system is a stationary system with a two-piece filter cartridge with a total surface area of 150 m2 . The efficiency of the filter is ensured by automatic compressed air filter cleaning.

Main benefits

  • The cleaning mechanism can be controlled by both an on/ off time as well as a pressure difference switch.
  • The suction/blow system ensures permanently clean working conditions for employees. Welders need only personal protective equipment to protect them from the rising air.

Product list


Push-Pull system

Push-Pull system


Stationary filters




Considering the size of the parts that we weld; this installation is certainly the best solution.

Mr. Fähndrich
Delmet SA

Need help?


CTA icon sample


Delmet workshop
Delmet workshop
Welding at Delmet
Welding at Delmet
Müller Martini

Clean air in all welding cabins

Welding & cutting fume removalHeavy industry
VAM Drilling

Flexible welding fume extraction system in plant

Welding & cutting fume removalHeavy industry
GP Groot

Mobile units offer Maximum flexibility

Welding & cutting fume removalHeavy industry

Healthy air in the new hall

Welding & cutting fume removalHeavy industry
STV Las- en Snijtechniek

Extraction equipment meets strict demands

Welding & cutting fume removalHeavy industry

A logical step to invest because of our workers

Welding & cutting fume removalHeavy industry

FlexHood fulfills Edmolift’s demands

Welding & cutting fume removalHeavy industry
Arginta Engineering

General filtration systems ensure clean air at work

Welding & cutting fume removalHeavy industry
Voortman Steel Group

No more complaints about welding fumes

Welding & cutting fume removalHeavy industry
Jos van der Lubbe/Lasbedrijf Wero

Multiple arm system at Lasbedrijf Wero

Welding & cutting fume removalHeavy industry

Stork chooses central oil mist filer system

Oil mist removalHeavy industry

Mobile welding fume extractors ensure flexibility

Welding & cutting fume removalHeavy industry
AJ Engineering

AJ Engineering

Welding & cutting fume removalHeavy industry

We're happy to help!

Contact our specialists now and get answers on all your questions regarding clean air.

Sign up to newsletter

Stay up to date

Nearest locations

Find out where we are