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PE-RT + PE-Xc Pipesfor Heating and SanitationMade in Germany

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Contents Pages

*Trademark - The Dow Chemical Company

Who is UNATHERM? 4-5

UNATHERM Quality Pipes of DOWLEX* 6

PE-RT Pipes / PE-Xc Pipes 7

Quality Assurance / Guarantee 8

SKZ Certificates 9

SKZ Test Reports 10

Oxygen Barrier 11

Assembling Instructions 12

Physical Properties 13

Chemical Resistance 14

Long-term Resistance 15

Pressure Loss 16

Floor Heating 17

Radiator Connection 18

Sanitation 19

Miner´s rule applied on PE-RT (PEMD) Pipes by Studsvik Polymer AB, S 20-21

Product Range 22

Dispenser 23

Disposable Cardboard Drum EWT 24

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Who is UNATHERM?

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*Trademark - The Dow Chemical Company

History

UNATHERM was established as a family businessin 1965. Right from the beginning the companyfocused its efforts on offering its customers themost advanced and efficient products for heatingand sanitation.

From the production of electric floor heatingsystems, and from transforming polypropylenepipes into tailor made heating grids, thedevelopment led to the latest step, the productionof polyethylene pipes.

PE-RT and PE-Xc pipes

UNATHERM was one of the very first companiesto manufacture pipes for heating and sanitationfrom DOWLEX*, and thus is nowadays one of themost experienced manufacturers and suppliers ofthis pipe in the world.

Location

The company is located in the pleasantcountryside of the "Oberbergisches Land",50 km east of Cologne, Germany, where theproduction facilities have constantly beenexpanded since 1993.

Philosophy

The management of the company is still in thefamily’s hands. And we all dedicate a100 % of our work to satisfying our customers’needs. Continuous development, together withour customers as partners, is the central idea ofour philosophy. Therefore, it is of majorimportance to us to build up and maintain goodpersonal relations with our business partnersaround the world.

We would be glad if we could also welcome youas a future member of the growing "family" ofUNATHERM business partners.

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UNATHERM Quality Pipesof DOWLEX*UNATHERM PE-RT and PE-Xc pipes are made ofpure DOWLEX* without addition of any recycledmaterial. As the raw material is the basis for thequality of a pipe, we use the in our opinion bestraw material.

Our pipes made of DOWLEX* have twocharacteristics that should be emphasized inparticular:

● high flexibility

● excellent smoothness of the pipe´sinner surface

The high flexibility of our pipes permits coldlaying, even at temperatures as low as -10°C.

The smoothness of the pipe´s inner surface,achieved by a special manufacturing process,guarantees the lowest possible flow resistance.The "roughness" of our pipe´s inner surface is aslow as 400 Å! If a pipe shows a rough inner sur-face, a deposit can build up, thus increasing flowresistance considerably.

Pipes for use in floor heating and radiatorconnection are coated with an oxygen barriermade of EVOH.

This oxygen barrier is applied to the basic pipeusing an adhesive resin. Basic pipe, adhesive resinand oxygen barrier thus form an inseparable unit.This system represents the state of the art. Thesepipes carry the name "oxystop".

Polyethylene, the raw material we employ, is apure hydro-carbon compound that is ecologicallyneutral. Our production waste can be recycled.

UNATHERM pipes for heating and sanitation

safe – flexible – durable

Areas of application:

Floor heating:PE-RT heating pipes oxystopPE-Xc heating pipes oxystop

Radiator connection pipe in pipe:PE-RT heating pipes oxystopPE-Xc heating pipes oxystop

Sanitary installation pipe in pipe:PE-RT sanitary pipesPE-Xc sanitary pipes

*Trademark - The Dow Chemical Company

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PE-RT Pipes (Polyethylene ofRaised Temperature Resistance)DIN 16833, DIN 4726/4721

Our PE-Xc pipes are made of DOWLEX* BG 2340.

They are crosslinked by accelerated electrons(PE-Xc). This process is used for crosslinking ofabout 85% of all PE-X pipes manufactured inGermany. This method is economic and, above all,ensures an even spread of crosslinking.

With this physical crosslinking method onlycarbon-carbon (C-C) bonds are formed under therelease of hydrogen, and the properties oforiginal polyethylene are widely maintained.No chemicals are added for this ecologicallyneutral process.

DVGW DW-8311AT2454KIWA/KOMO K11423/01KIWA/KOMO K11423/02STF 113/6221/2001ETA VA1.14/11831NBI 0035SKZ A253GOST R

10 YEARS GUARANTEE

UNATHERM pipes for heating and sanitation

safe – flexible – durable

PE-Xc PipesDIN 16892, DIN 4726/4729

*Trademark - The Dow Chemical Company

For the production of our PE-RT pipes we useDOWLEX* 2344 E, only. It is the first material thathas been developed especially for the productionof pipes for floor heating, radiator connectionand hot and cold drinking water supply.Due to its unique molecular structure withoctene homogeneously distributed over thepolymer back-bone and the narrow molecularweight distribution, DOWLEX* 2344 E doesnot need crosslinking in order to perform long-term under elevated temperature and pressureconditions.

The requirements our PE-RT pipe needs to meetare laid down in the standards that haveespecially been worked out for this pipe:DIN 16833, DIN 16834, DIN 4721 and DIN 4724.Long-term testing proved that the requirementsof DIN 4726 are exceeded by far. Thus, theextrapolated life time of a PE-RT pipe for instanceis much longer than the specified 50 yearsat 70° C.

DIN CERTCO 3V246KIWA/KOMO K14281/01KIWA/KOMO K14281/02KIWA/KOMO K14283/01KIWA/KOMO K14283/02SKZ A240GOST R

10 YEARS GUARANTEE

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UNATHERM – The Safety Pipe

Production & Quality AssuranceManufacturing high quality pipes requiresconstant quality control – from the receipt of theraw material to the finished product.

The control of the pipe production is of specialimportance to UNATHERM – it is carried outcontinuously:

● inspection of the delivered raw material

● supervision of the manufacturing process

● checks during and after manufacturing

● final control before dispatch

Our quality assurance is based on the controland check regulations of the SüddeutschesKunststoffzentrum, Würzburg and otherEuropean test institutes, on DIN ISO 9002 andthe corresponding DIN standards.

The melt index of all delivered raw materialis examined according to DIN 53735, as thisplays a major part with regard to the futurequality of the pipe. Only absolutely faultless ma-terial is released for production.

Our machines and devices used for manufacturingrepresent the state of the art. Our SPS-controlledextruders e.g. are the basis for an optimum pipeproduction.

During the pipe production the manufacturingprocess is constantly controlled according toDIN 8074/8075 and regulations HR 3.2/HR 3.16 ofthe SKZ.

This includes examination of

● exact wall thickness and outer diameter(DIN 8075 4.2)

● outer and inner, water carrying surface

All data are recorded and are available at anytime, even years later.

The finished pipes are subject to the followingtests:

● change after hot storage (DIN 8075 4.4)

● homogeneity of the material

● pressure resistance at 20° C and 95° C(DIN 53759)

For effecting these tests, our laboratory isequipped with the latest testing instruments.Only controlled and perfect pipes are releasedfor dispatch.

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SKZ CertificatesFor our PE-RT pipe we concluded an inspectionand control contract with the SüddeutschesKunststoffzentrum, Würzburg. The pipe iscontinuously controlled according to HR 3.16and marked "SKZ A 240".

We also have an inspection and controlcontract with the Süddeutsches Kunststoff-zentrum, Würzburg for our PE-Xc pipe. Thetests are based on HR 3.2, and the pipe ismarked "SKZ A 253".

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SKZ Test Reports

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Oxygen BarrierTÜV + MPA Test Certificates

Our oxygen proof "oxystop" pipes meetthe requirements of DIN 4726.

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Instructions for UseUNATHERM Heating and Sanitation Pipes

Bending radius

We allow a bending radius according to DIN 4726.E.g. pipe 16 x 2,0 mm, bending radius in accor-dance with the above standard 80 mm.

Fittings

We recommend fittings made of brass (e.g.BEULCO). The fittings have to be installedaccording to the manufacturer´s guidelines.Fittings must be suitable for pipes accordingto DIN 16833, DIN 16892.

Storage

Pipes must be protected against directsunlight. We recommend to store pipes incardboard boxes or black polyethylenebags.

Application sanitation pipes

Max. operating pressure: 10 barMax. operating temperature: 95°C

Application heating pipes

Max. operating pressure: 6 barMax. operating temperature: 95°C,short time temperature: 110°C

Pipes with oxygen barrier layer

The oxygen permeability is < 0,1 g/m³din accordance with DIN 4726.

Heating circuit additives

For pipes without oxygen barrier layer,a corrosion inhibitor must be used inthe heating circuit. We recommendVaridos KK from Schilling Chemie inGermany.

Guarantee

10 years, when keeping to usual working con-dition according to the state of the art.

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Physical and MechanicalProperties of UNATHERM Pipes

Property Unit Test Method Values

PE-RT DOWLEX * PE-Xc DOWLEX*2344 E BG 2340

Density g/cm3 ISO 1183 0.933 0.942

Thermal Conductivity W/(mK) DIN 52612-1 0.40 0.33at 60° C

Thermal Exp. Coefficient 10-4/K DIN 53752 A 1.95 1.67(20° C - 70° C)

Yield Tensile Strength(1) (2) MPa ISO 527 16.5 21

Yield Tensile Elongation(1) (2) % ISO 527 13 10

Surface Roughness Ångström 400 400

Flexural Modulus MPa ISO 178 550 750

Oxygen permeability(3) g/m3·d DIN 4726 <0.1 <0.1

Weldability(4) excellent not weldable

ESCR h ASTM D 1693-B >876010% ANTAROX CO 630 (0 failures)

h 50% antifreeze >8760(PEG)(5) (0 failures)

h 10% corrosion >8760inhibitor (5) (0 failures)

All mentioned values are typical ones and not to be construed as specification limits.

(1) Crosshead speed 50 mm/min.(2) Compression molded sample (2 mm thick).(3) Tested with co-extruded EVOH-layer.(4) The EVOH-layer is not weldable and has to be removed.(5) Test according to ASTM 1693 with the listed medium.

*Trademark - The Dow Chemical Company

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Chemical Resistanceof UNATHERM Pipes

Reagent PE-RT DOWLEX* 2344 E PE-Xc DOWLEX* BG 2340

Acetone EXCELLENT EXCELLENT

Acids, inorganic / organic EXCELLENT EXCELLENT

Ammonia good good

Chromic acid excellent excellent

Ethylene Glycol excellent excellent

Ferrous sulfate excellent excellent

Formaldehyde 30% EXCELLENT EXCELLENT

Gasoline, regular poor poor

HCL Hydrochloric Acid excellent excellent

Hydrogen excellent excellent

Isopropyl Alcohol excellent excellent

Nitric Acid 5% EXCELLENT EXCELLENT

Propylene Glycol excellent excellent

Sodium Hydroxide excellent excellent

Sulfuric Acid 30% EXCELLENT EXCELLENT

The chemical resistance tests were performed in accordance with ASTM D543-60T (ASTM D543-87)at 23.9° C.

Upper case letters represent evaluations based on ASTM tests, lower case letters represent transferredvalues.

Further information available on request.

*Trademark - The Dow Chemical Company

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fracture time in years

fracture time in h

ho

op

str

ess

in M

Pa

fracture time in h

fracture time in yearsfracture time in years

fracture time in h

ho

op

str

ess

in M

Pa

ho

op

str

ess

in M

Pa

UNATHERM PE-Xc Dowlex 2340 UNATHERM PE-RT Dowlex 2344

UNATHERM PE-RT Dowlex 2388

Long-term Resistance

UNATHERM PE-Xc Dowlex 2340 UNATHERM PE-RT Dowlex 2344

UNATHERM PE-RT Dowlex 2388

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Pressure Loss

UNATHERM PE-RT and PE-Xc pipes

20x2,8

flo

wra

te m

(kg

/h)

pressure loss (Pa/m) (1 mbar = 100 Pa)

velocity (m

/s)

0,2

0,3

0,4

0,5

0,6

0,70,8

0,91,0

16x2,2

25x3,5

32x4,4

16x2,017x2,0

25x2,3

32x2,9

18x2,0

12x2,0

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Floor Heating

UNATHERM PE-RT oxystop floor heating pipeconvinces by its decisive advantages:● outstanding flexibility● extremely easy to install● saves installation time● suitable for all installation methods● usable for open space heating, wall heating,

ceiling cooling, concrete core activation● inexpensive● oxygen proof● made of high quality raw material

(DOWLEX* 2344 E)● complies with DIN 16833, DIN 4726, DIN 4721● DIN CERTCO approved● KIWA/KOMO approvedUNATHERM floor heating pipe is also available asPE-Xc. It is understood that this pipe is made ofhigh quality raw material (DOWLEX* BG 2340) aswell. The fields of application are the same as forUNATHERM PE-RT pipe, and it complies with DIN16892, DIN 4726 and DIN 4729.

DIN CERTCO 3V246KIWA/KOMO K14281/01KIWA/KOMO K14281/02SKZ A240SKZ A253GOST R

*Trademark - The Dow Chemical Company

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Pipe-in-Pipe System forRadiator ConnectionUNATHERM radiator connection pipes - oxygenproof pipes in protective pipes - for all moderninstallations.

The pipe-in-pipe system offers convincingadvantages:

● easy to install

● replaceable

● no soldered or welded joins

● no deposit formation

● no sound transmission

KIWA/KOMO K14281/01KIWA/KOMO K14281/02KIWA/KOMO K11423/01GOST R

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Pipe-in-Pipe System forSanitary InstallationsUNATHERM sanitary pipes for the entire domesticdrinking water installation.The pipe-in-pipe system offers convincingadvantages:● suitable for any drinking water quality● pressure resistant up to 10 bar● temperature resistant up to 95° C● easy to install● replaceable● no punctual corrosion● no sound transmission● no sleeves or welded joinsOur drinking water pipes are of course approvedby the German DVGW and can be applied in areaswhere copper pipes are not allowed to be usedanymore.

DVGW DW-8311AT2454STF 113/6221/2001ETA VA1.14/11831NBI 0035SKZ A253

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Studsvik Polymer AB (now BodycotePolymer AB), the institute with thelargest pipe testing capacity world-wide, performed tests and calculationsfor PE-RT pipe according to Miner´s rulefor ISO 10508 classes 2, 4 and 5.

Studsvik Test

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UNATHERM PE-RT pipes meet the re-quirements for ISO 10508 classes 2, 4and 5.

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Product Range

We manufacture our pipes as your requirements!

Select from our product range the pipe for your field of application:

The following units are at your disposal:

coil coils (> 300 m) disposablecardboard drum

pipe in pipe

Other measures, length, colours on request.

12

14

15

16

17

18

20

22

25

28

32

1,5

1,8

2,0

2,2

2,3

2,5

2,8

2,9

3,0

3,5

4,4

Dowlex 2344PE-RTPE-RT oxystopPRO5 oxystop

Dowlex 2388PE-RTPE-RT oxystopPRO5 oxystop

Dowlex 2340PE-XcPE-Xc oxystop

* availablefrom 25up to 200 m

25

50

75

100

120

200

300

500

600

750

1000

ColourOuter-Ø mm

Wall-thickness

Coillength

Material Corrugatedpipe*

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Dispenser

Dispenser ARS Dispenser ARS Dispenser ARS- push fit construction - - disposable cardboard drum - - coils (> 300 m) -

Dispenser ARW Dispenser ARW Dispenser ARW- movable - - disposable cardboard drum - - coils (> 300 m) -

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b

d1

d2

Disposable Cardboard DrumEWT

Product description

The UNATHERM EWT is useful and helps youto work more efficient with coils of morethan 500 m.

With its compact size, the UNATHEM dispo-sable cardboard drum allows very easy hand-ling, and due to the width of 60 cm it fits everydoor.

The UNATHERM EWT is equipped with front sideholes of 35 mm, so standard steel bars upto 1" can be used as spindles to uncoil the pipes.The maximum coil length, depending on theoutside diameter of the pipe, is 1.200 m.

Material

The UNATHERM disposable cardboard drum ismanufactured completely of corrugated card-board. Thus, it can be disposed easily and free ofextra costs.

b: 600 mmd1: 800 mmd2: 35 mm

Sizes and max. coil length

Ø 12 x 2.0 mm max. 1200 mØ 14 x 2.0 mm max. 1000 mØ 16 x 2.0 mm max. 800 mØ 17 x 2.0 mm max. 700 mØ 18 x 2.0 mm max. 700 mØ 20 x 2.0 mm max. 500 m

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Notice

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Notice

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UNATHERM GmbH

Gewerbeparkstrasse 5D-51580 Reichshof-Wehnrath

Tel. +49-2265-8080 · Fax +49-2265-8938http://www.unatherm.come-mail: pipes@unatherm.com

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