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DeutschEnglishFrançaisEspañolČeštinaSvenskaEnglish (GB)Português (Brasil)Język polskiThese conductive and antistatic hoses fulfil the special requirements that arise in Ex zones or when transporting flammable bulk materials.
When operating hose lines in potentially explosive atmospheres, ignition hazards can jeopardise safety. These hazards are usually caused by electrostatic charges. Such a charge or charge separation can occur when transporting solids or liquids through chargeable hoses. Friction between the conveyed material and the wall and between the conveyed particles can cause both the conveyed material and the hose surface to become dangerously charged. Once released, the ignition energy of such an electrostatic charge can ignite explosive dust-air mixtures.
This is where we come into play! Our conductive and permanently antistatic hoses fulfil the special requirements that arise in Ex zones or when transporting flammable bulk materials. The type of construction and the materials used ensure that the hoses mentioned here do not become dangerously charged during operation.
The selection of connection solutions specially designed for use in potentially explosive atmospheres includes extruded hoses and clip hoses alike. There are also individual foil hoses. Work safely and find out now about our permanently antistatic hose solutions.
MaterialsDesign & manufacturing
Our permanently antistatic and conductive hoses offer a wide range of applications and are used in a wide variety of industries.
Areas of applicationContact
The material polyurethane (PU) in our antistatic hoses
Polyurethane is a versatile plastic and the ideal material for our antistatic hoses thanks to its special properties. Thermoplastic polyurethanes (TPU), on the other hand, ideally combine important requirements such as elasticity, durability and ageing resistance.
All of the hoses we manufacture from PU have common material-related properties: permanent antistatic properties and discharge capacity thanks to particularly high abrasion resistance.
PTFE for multi-layer conductive and antistatic clip hoses
The material PTFE is characterised by its excellent and broad chemical resistance and also by the fact that it is harmless to health.
We equip some of our multi-layer clip hoses with an inner layer made of an electrically conductive PTFE film.
As this wall material is non-adhesive, these hoses offer optimum conditions for transporting different media.
The material polyethylene (PE) in our antistatic hoses
Polyethylene is very durable due to its high resistance to acids, alkalis and chemicals and, above all, has a significantly higher chemical resistance than PU.
Our PE hoses are particularly suitable for demanding applications, e.g. for the transport of aggressive gaseous and liquid media or for the transport of fine-grained particles such as dusts and powders. The design of our antistatic hoses prevents them from becoming electrically charged.
Profile extrusion: the flexible manufacturing process for light to (very) heavy antistatic hoses
Extrusion is a flexible manufacturing process for light to (very) heavy hoses in which plastics or other viscous materials to be hardened are pressed through a die in a continuous process.
Flow profiles in the design
Thanks to their smooth inner wall, extruded, antistatic hoses offer optimum flow conditions with only minimal flow losses. As soon as solids are transported in a hose, these are usually irregularly shaped particles or particles with specific shapes such as fibres, granules or salts. When such particles collide with other particles or with the hose wall itself, it is not only the inside of the hose that is subjected to particular stress, but also the conveyed material itself. To avoid negative effects on the transported goods, an optimised hose profile pays off. This is the only way to ensure less abrasion and therefore less material loss during transport.
Most of the products within this group fulfil the requirements of TRGS 727 or the ATEX standard. The technical rule for hazardous substances TRGS 727 reflects the current state of safety technology for the avoidance of ignition hazards due to electrostatic charges and the assessment of an ignition hazard of bulk materials.
It deals in detail with electrostatic charges when handling liquids (§ 4 ff.), gases (§ 5 ff) and bulk materials (§ 6 ff). In addition, the TRGS also provides information on which transport hoses may be used when handling the individual media. TRGS 727 distinguishes between aspiration (vacuum conveying) and pneumatic transport (pressurised conveying) of bulk materials.
You should ensure that electrostatic charges are prevented from the outset. For use in potentially explosive areas, you should use our conductive hose types. However, these suction hoses and transport hoses must be earthed via the metal support spiral. Please read our operating instructions.
Further topics on permanently antistatic and conductive hoses
Background knowledge: Dust explosion
In production facilities for powdery media, such as starch, unintentional electrostatic discharges can lead to devastating accidents in the form of explosions. Our "EL" type food hoses are ideally suited to minimising the risk of dust explosions - for example in grain mills.
We have written a white paper on the subject of dust explosions.
