Thermoplastic, PVC and PU
Technical reference and selection guides on thermoplastic, PVC and PU.
15 guides
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Basic construction of thermoplastic hydraulic hoses
A thermoplastic hydraulic hose is a hose family in which a thermoplastic inner tube and outer cover are combined with suitable reinforcement. Selection is made not only on the basis of light weight or outside diameter, …
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Routing twin thermoplastic hoses
A twin hose can make it easier to route two lines together; however, the fact that the lines are joined does not eliminate the risk of torsion, friction or incorrect bending. The length of the ends to be separated and t…
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Thermoplastic hoses in paint and solvent applications
When selecting a paint and solvent hose, the name of the paint alone is not sufficient. The solvent composition, cleaning fluid, temperature, pressure and the electrical requirements of the application must be evaluated…
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Micro hoses and measuring lines
A micro measuring hose is a small-diameter connection used to carry a measuring point to a pressure gauge or sensor. It is not a scaled-down equivalent of the main power line; measurement accuracy, response time, pressu…
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Reinforcement and outer cover in thermoplastic hoses
In a thermoplastic hose, the reinforcement and the outer cover do not perform the same function. The reinforcement relates to pressure and mechanical loads; the cover manages contact with the external environment. A cov…
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PVC hose types and their basic uses
PVC hose is not a single product type. Products with braided or spiral reinforcement or with different wall constructions are designed for different tasks. A transparent appearance or the name PVC does not guarantee pre…
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Selecting steel spiral PVC hose
In steel spiral reinforced PVC hoses, the spiral is a structural element that contributes to the shape stability of the hose. The presence of a spiral alone does not mean resistance to full vacuum or reliable electrical…
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Selecting rigid PVC spiral hose
Rigid PVC spiral reinforced hoses are defined by a flexible wall and a spiral structure that supports the shape. Suitability for suction or light material transfer is determined not from the appearance of the spiral but…
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Reading technical values for transparent braided PVC hose
In a transparent braided hose, the visible braid shows the reinforcement construction; it does not on its own determine the permissible working pressure. The manufacturer limits given together with the product's size, t…
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Evaluating the effect of temperature on PVC hose
The catalog pressure of a PVC hose is meaningful together with the temperature condition stated in the catalog. For hotter operation, the permissible pressure or vacuum must be taken from the derating table of the produ…
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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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