WOLTER AXV-type smoke-extraction axial fans are tested and certified in accordance with EN ISO 12101-3 for 300°C/2h and 400°C/2h use by MPA Braunschweig/Germany.

The fans may be used inside as well as outside of the fire zone, with floor installation or suspended from the ceiling. All fans are also suitable for open-air installation. Available sizes range from 315 to 2000 (F300) and 315 to 1600 (F400). Both, uni-directional as well as fully reversible impellers types may be used. Higher pressures can be achieved with counter-rotating two-stage fans. If required, fans may be placed in acoustically insulated cabinets.

A wide range of certified accessories is available, such as the motorized RUM roof cowl for vertical installation as an 300°C/2h smoke-extraction roof fan.

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Impellers of AXV-AL 300°C/2h range axial fans are made from injection-mould aluminium. On larger fan sizes, hubs are made from a combination of injection-mould aluminium and cast iron. For 400°C/2h fans, impellers are made of steel.

Casings are manufactured from hot-dip galvanized steel. Flanges are rolled and have a pitch circle according to DIN 24 154 R2 (half number of holes).

Short- and long-cased versions are available. Different surface treatments such as powder-coating or different casing materials (stainless steel) are available.

In the F300 range, different possible hub ratios for a given diameter and different solidities of the impeller allow for a very wide range of impeller configurations, significantly expanding the performance range and allowing to match the required duty points very precisely. Pitch angles are adjustable during standstill.

The IEC high-temperature motors used in AXV-range axial fans are wired to an external terminal box and fans are shipped installation-ready.

Of course a wide range of accessories is available that has been tested and certified for use in conjunction with our smoke-extraction axial fans. This includes, for example, motorized cowls (RUM) for vertical installation as a roof fan up to temperature class 300°C/2h. WOLTER AXV smoke-extraction axial flow fans are available for all forms of running.