Industrial Plastic Fans and Process Exhaust Systems.

A standard PP acid fan keeps its mechanical integrity and corrosion resistance perfectly in continuous gas flows between 0 °C and +80 °C. Where your plant runs hotter — 100 °C and above — we build the same casing design in PPs or PVDF.

Certainly. Our backward-curved plastic impellers, designed with modern tooling and CFD analysis, generate the high static pressures your process needs — 3,000 Pa and beyond — with high aerodynamic efficiency and considerably less energy than a metal equivalent.

In our designs the motor sits entirely outside the gas stream. The shaft joining impeller to motor is sealed off from the casing with Teflon or acid-resistant polymer hub seals, so acid vapour never reaches it.

Our impellers are balanced statically and dynamically to ISO 1940 during manufacture. Because acid crystals cannot adhere to the plastic surface and there is no mass loss through corrosion, the drift in balance so common on metal fans does not occur.

Black, UV-stabilised PP will survive outdoors for a time, but in extreme winter cold it loses its flexibility and becomes brittle. HDPE keeps its toughness even at −40 °C and does not crack chemically or mechanically under long UV exposure. For outdoor projects it is the safest engineering plastic.

Almost not at all. Both are polyolefins and both resist acids, alkalis and salt solutions excellently. The choice is made by our engineers less on chemical load than on ambient temperature and sun exposure.

No. The HDPE sheet we use is compounded with carbon black or special UV stabilisers, so the pigment runs through the whole material. Decades in the sun produce neither surface nor hairline cracking.

Yes. For high-capacity systems the wall thicknesses are increased by finite element calculation and the HDPE casing is reinforced externally with steel or epoxy ribs, so fans can be built for any volume.

No polymer is entirely non-combustible, Teflon aside. Flame-retardant means the plastic will burn under a direct flame but extinguishes itself once the source is withdrawn, and does not carry the flame or drip burning material. It stops a fire spreading through the ductwork into other parts of the plant.

No. PPs retains the full acid and alkali resistance of standard polypropylene. Fire safety is raised without any loss of chemical performance.

Because of their additives, PPs materials can be somewhat stiffer than standard PP, and their UV resistance is usually formulated for indoor use. They also cost more. Our engineers make the optimal choice for you based on your layout and your fire regulations.

Pure thermoplastics are excellent insulators and accumulate static. During raw material production, however, conductive carbon black or special nanotubes are dispersed evenly through the polymer matrix. These additives create microscopic paths through which current can pass, so the charge is conducted immediately to earth.

It would be, with a standard plastic impeller. But the impellers in our ATEX fans are also made from conductive PP-el and connected to the motor shaft with earthing brushes. No surface the air touches can hold a static charge.

European standards divide such areas into Zone 0, Zone 1 and Zone 2 according to the concentration of the explosive gas and how often it is present. Our fans are certified for the most common industrial risk areas: Zone 1, where an explosive atmosphere may occur occasionally, and Zone 2, where it is rare. Our engineers confirm the right choice against your process data.

As with every ATEX installation, periodic earthing measurements — every six or twelve months — and checks of the shaft seal are mandatory to confirm the conductive path is intact. Mechanically, the fan lasts as long as any of our plastic fans.