UPVC Pipe Systems - General characteristics

The company Akatherm FIP GmbH located in Mannheim is a leading provider of UPVC-pipe components with long-term experience in plastic pipe systems. The quality of our products and the services provided by Akatherm FIP underlie a strict standard of quality. Additional to UPVC pipes, extruded UPVC plain fittings and UPVC threaded fittings, we also offer the different accoutrements needed for pipe installations.

Silicon-free produced products, flanges and seals, as well as fixing material round off our selection of products. The following details were gathered with best knowledge and care. Nonetheless itís not possible to trace back a reliability from the given information.

UPVC is a chlorinated, amorphous thermoplastic. The Akatherm FIP products are made of hard PVC (without plasticizers). Products made out of this material play an important role in the industrial building of conduits because of their material specific features.
Material property

The following material data are guidelines, which might differ depending on the chosen treatment. Therefore they canít be taken over for the finished product.

For further information on all Kwerk GmbH products and services contact our Customer Services Department as detailed below.

Customer Services
Tel: 0049 2602 999730
Fax: 0049 2602 9907329
Email: info@kwerk.de



- The UPVC is basically inert to most inorganic bases, acids, saline solutions and paraffinical/aliphatic hydrocarbons. It is not recommended for use with polar
organic solvent, including chlorinated and aromatic types.
- The unique molecular structure grants a low coefficient of ther-mal conductivity (λ= 0,15 W/m °C according to ASTM C177). It virtually eliminates condensation and offers superior heat retention reducing heat loss through piping walls.
- Low permeability to oxygen and reduced water absorption (0,1% at 23°C according toASTM D 570).
- Good resistance to ageing, thanks to the chemical and physical properties of the UPVC resin.
- All components are suitable for conveying potable water, beverages and food. The basic resins employed are all NSF approved.

Characteristic Value Unit of Measure
Density 1,38 g/cm³
ZOD notched impact strenght at (23°C) 50 J/m
Tensile elongation break 50 %
Thermal conductivity 23°C 0,15 W/(m °C)
Tensile strengh 50 MPa = N/mm
VICAT softening point (B/50) 76 °C
Coefficient of linear thermal expansion 8 x 10-5 m/(m °C)


The graph is based on a surrounding temperature of 20°C and water as a medium. The pressures in the chart are valid for a life span of 25 years and an included safety margin of 2.5.

Concerning the admissible working pressure for fixing material made out of UPVC we refer to the PN-data for the accoutrements (20°C and Water). For different temperatures or mediums please make reference to our product management.

Advantages of the UPVC-System

The material UPVC is characterized by its hardness, dimensional stability and exceptional chemical resistance which result from the interaction of the chlorine atoms in the polymer chain. These characteristics predestine the material UPVC to be used in the production of pipe installations under pressure.

Behaviour of UPVC when used outside

UPVC is weather resistant in middle European climate zones north of the Alps even under the influence of the short wave UV-parts of the sunlight. Nonetheless UPVC loses a little bit of its impact-resistance and therefore it is to your advantage to protect the material by using an Isolation system, a cover or a protective coating in case the product is used under extreme conditions.

Chemical resistance

UPVC has an exceptional chemical resistance, even under the influence of high temperatures or medium concentrations. In comparison to a multitude of dilute or concentrated acids and bases , alkalis and aliphatic compounds, UPVC is rated as resistant. It shows weaknesses when confronted with mediums like ester, ketone, chlorinated hydrocarbons and several other solvents. UPVC is not resistant towards strong oxidants.

The chemical resistance depends on multiple factors, for example the operating temperature, the operating pressure, the concentration and other influences. If you have a special request you can look up the resistance in our resistance list or contact our product management.

Temperature- and pressure range of application

UPVC is usable in a temperature range from 0°C up to 60°C. Temperatures higher than 60°C soften the material relatively fast. Under 0°C the impact-resistance decreases, therefore Akatherm FIP doesnít recommend the use of UPVC in this range of temperature. Concerning the internal pressure capacity of tubes and patterns we refer to the graph under the section Pressure-Temperature-graph. For details regarding the maximum internal pressure capacity of accoutrements please note the additional comments regarding the accoutrement or make reference to our product management.

Electrical property

UPVC is a polar, amorphous thermoplastic with exceptional insulation properties. Because of the possibly resulting static electricity UPVC canít be used in situations where a danger of inflammation or explosion exists.

Low weight

UPVC systems weigh only half in comparison to copper pipe installations and only 1/5 compared to steel pipe installations. This simplifies the handling and new fields of application are possible, in which UPVC can replace metallic systems because of its special characteristics.

As all thermoplastic plastics UPVC has a relatively high thermic coefficient of expansion (0,08 mm/m °C). This fact has to be taken into consideration during the planning of the tube system. There exist several possibilities: Installation of an expansion arc or compensators as well as clamping them at fixed points. In order to do this, sound knowledge of the use of plastic is necessary and we recommend to calculate the planned system with the help of a computer program.

Easy connection

UPVC tube components are connected to each other with adherence. The production of such glued joints requires expertise, which can be acquired in classes held by Akatherm FIP. Concerning the adherence please take into consideration the special guidelines from the adhesive supplier or the published instructions from the KRV (Kunststoffrohrverband e.V.) as well as the corresponding DVS-explanatory leaflets.

Pipe clamp distances

Pipe clamp distances for tubes made of UPVC (PN 10) in a medium with a density <1 g/cm³
pipe diamter in mm 20°C 30°C 40°C 50°C 60°C
16 950 900 850 750 600
20 1100 1050 1000 900 700
25 1200 1150 1050 950 750
32 1350 1300 1250 1100 900
40 1450 1400 1350 1250 1000
50 1600 1550 1500 1400 1150
63 1800 1750 1700 1550 1300
75 2000 1900 1850 1700 1450
90 2200 2100 2000 1850 1550
110 2400 2300 2250 2050 1750
125 2550 2450 2400 2200 1850
140 2700 2600 2500 2300 1950
160 2900 2800 2700 2500 2100
180 3100 2950 2850 2650 2200
200 3250 3150 3000 2800 2350
225 3450 3300 3200 2950 2500
250 3650 3500 3350 3100 2600
280 3750 3700 3550 3300 2750
315 4100 3900 3750 3500 2950
*All information in mm

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IBC adapters out of PE
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Attachment parts for tank construction

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Revision nozzles
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PENTEK Big Blue filter housings
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Flow meters

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Filter presses

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