PU and ventilation
PU and ventilation: scope, limits of use and technical checkpoints.
5 guides
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Abrasion and flexibility in PU suction hoses
PU hose selection should not be based solely on the name polyurethane or on an abrasion claim. The conveyed particles, velocity, temperature, moisture, wall construction and motion are evaluated together; the performanc…
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Specifying electrical properties for dust suction hoses
The electrical requirement of a dust suction hose cannot be inferred from the hose color or from a visible metal spiral. The defined electrical property of the hose, the end fittings and the facility's explosive dust ri…
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Temperature and vacuum in ventilation hoses
In ventilation hose selection, the suction or discharge condition, diameter, length, bends and any conveyed vapors or particles are as important as the air temperature. A lightweight duct hose is not by itself a compres…
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Hydrolysis and environmental conditions in PU hose
Hydrolysis resistance in PU hoses is not a single property common to all polyurethanes. Formulation, moisture, temperature and exposure duration all matter; the hydrolysis and microbial resistance information the manufa…
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Hose selection for chip and granule transfer
Hose selection for chip and granule transfer is made according to particle size, shape, sharpness, temperature and flow conditions. Abrasion resistance or nominal diameter alone is not enough to determine the suitabilit…
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