Electrically conductive pipe systems

Pipes, fittings, valves and semi-finished products made of PE-el, PE-Xel, PPs-el, PVDF-el

Ex Schutz Formteile

As soon as highly flammable substances are used in industrial applications or processes take place in a potentially explosive atmosphere (EX area), the ATEX directives (ATmosphères EXplosibles) of the European Union must be observed. In addition to measures to protect health and occupational safety, they regulate the safety of equipment and products used in hazardous areas. In order to exclude them as a source of ignition, they must - in accordance with the TRGS 727 directive - be made of electrically conductive materials. For these applications, we supply pipes, fittings, flanges, valves and semi-finished products made of PE-el, PPs-el and PVDF-el that comply with the ATEX directives. In addition, they are also suitable outside the EX area, e.g. for the transport of solids such as powder and granulate, which can clump together in the event of static charges.

EX Schutz Granulat

Our dissipative materials and their properties

Polyethylene, electrically conductivePolyethylene, cross-linked, electrically conductivePolypropylene, flame retardant, electrically conductivePolyvinylidene fluoride, electrically conductive
PE-el is often used for the transport of highly flammable media (e.g. fuels) or dusts at temperatures up to 60°C.PE-Xel is suitable for applications with very low temperatures down to -40°C. In addition, the material is highly flexible and extremely resistant to abrasion.PPs-el combines the advantages of the polypropylene grades PPs and PPel. This makes the material electrically conductive and at the same time flame retardant (flammability class V0 according to UL94). In addition to use in ventilation, suction and pressure pipes, PPs-el is also suitable for transporting highly flammable media up to an operating temperature of 95°C.PVDF-el is chemically very resistant, extremely temperature-resistant and also electrically conductive. The material is ideally suited for the transport of aggressive and highly flammable media with operating temperatures up to 120°C.

General properties

  • electrically conductive, surface resistance ≤ 106 Ω
  • good weldability
  • good chemical resistance
  • The surface provides as unfavorable a breeding ground as glass for the proliferation of microorganisms.
  • high resistance to heat aging
  • good resistance to abrasive media

Areas of application

  • Exhaust air lines
  • Solids transport lines
  • Pipelines and vessels in explosion-proof areas
  • Sewage treatment plants
  • Waste water pipelines
  • Degassing systems for landfills
  • Laboratory applications, e.g. for transporting solvents
  • Piping systems in mine construction and mining plants

Conductivity of the pipe joint:

Butt welding ensures conductivity beyond the weld seam in the case of electrically conductive materials. This also applies to hot gas welds and extrusion welds with electrically conductive welding wire, as is frequently used in the ventilation sector.

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