AIRDUC® profile hoses

Construction description

AIRDUC is built from four elements: an extruded profile strip, an embedded spring steel wire, a weld seam and an optimised cross-section. The strip is wound spirally around the steel wire and welded together into a coherent, gas- and liquid-tight seam. It is the long weld seam that gives the construction its process and operational reliability, and it is the spring steel that holds the shape under bending and negative pressure.

The profile strip is extruded with a geometry that both optimises flow and reinforces the wall at primary wear points. That gives two consequences in service: the medium runs evenly without deposition thanks to the smooth interior, and the wall lasts longer because the exposed zones are already thicker by design. The hose is light compared to an equivalent rubber hose, but it has the axial stiffness that lets it hang freely in longer suspended runs without kinking.

Properties

The four construction elements give AIRDUC a combined property profile that makes the construction a versatile basis for the conveying and extraction of air, gas and bulk material:

• Smooth interior surfaceReduces deposition and lowers pressure loss — the power requirement of the blower drops, and with it the operating cost.
• High axial stiffnessThe hose does not kink in longer suspended runs. Important on suction and blower lines over distance.
• Good flexibilityFollows a tight bend and folds evenly — without sharp kinks that block flow.
• Reinforced wall at wear pointsThe profile strip geometry has extra material exactly where wear exposure is highest.
• Gas- and liquid-tight weld seamThe long, coherent seam provides high reliability against leakage and medium loss.
• Electrically dischargeableThe spring steel spiral can be grounded — relevant when conveying wood dust, granulates and other potentially charging media in ATEX zones.
• Low weightSignificantly lighter than a rubber hose with comparable dimensions and pressure rating — easier handling and less load on the suspension.
• Customisable colourFull or partial colouring is available from the factory — useful for zone marking or branding.

Variants — TIMBERDUC® 533 and 534

TIMBERDUC® 533 and 534 are AIRDUC variants optimised for the woodworking industry. They build on the same spiral-welded profile construction and spring steel, but are tuned to the specific loads of wood dust, chips and granulate — typically with formulations that withstand the abrasion of hardwoods and retain flexibility at the lower ambient temperatures often found in wood workshops. Beyond TIMBERDUC, AIRDUC is also available in FOOD, AS (antistatic) and HT (high-temperature) variants depending on the application.

Applications

AIRDUC is typically used wherever air, gas or solid bulk material must be conveyed under moderate positive or negative pressure — suction systems, extraction, blowers and pneumatic transport. The construction principle of a spiral-welded profile strip with embedded spring steel makes it a natural choice when flexibility, axial stiffness and wear resistance must all be present at once.

In the woodworking industry, the TIMBERDUC variants handle chips, dust and granulate from sawmills, furniture production and panel processing. In the plastic and granulate industry, AIRDUC is used for pneumatic transport of raw and recycled granulate. In food and pharma production, AIRDUC FOOD with Ether-PUR and contact-with-food certifications is available. And in ATEX areas, the AS variant is used with an antistatic formulation combined with grounding via the steel spiral.

Manufacturer and distribution

AIRDUC® is developed and manufactured by NORRES BAGGERMAN in Gelsenkirchen, Germany — one of the world's leading producers of technical hose systems for industrial and process applications, ISO 9001:2015 certified by TÜV Rheinland. Particulair is the distributor for NORRES BAGGERMAN in Scandinavia and provides the local advisory work, customisation and installation support that makes the construction practical in your specific process.

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