Data Sheet
FH PEXa Pipes
Application
The Danfoss PEXa pipe is a high quality floor heating pipe with an EVOH oxygen barrier. All layers are permanently bonded with each other during the production process.
PEX-a (peroxide) pipes give greater flexibility than
PEX pipes cross-linked by other systems.
They can be cold bent and curved very easily and without special tools, saving joints and installation time.
The EVOH oxygen anti-diffusion barrier is a thin layer of ethylene vinyl alcohol copolymer which prevents permeability of the pipe to oxygen diffusion. This construction eliminates problems with addition of oxygen to the flow water and the resulting corrosion of metal parts in the installation, extending the working life of the whole installation.
5-layer piping made of cross-linked polyethylene and produced by the peroxide method, with oxygen anti-diffusion barrier, according to the requirements of European standard EN 1264-4. Pipe cross linking degree >70 % according to ISO 15875.
Ordering |
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Product |
Size (mm) |
Length |
Code no. |
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FH PEXa pipes |
14,0 × 2,00 |
240 m |
088X0950 |
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FH PEXa pipes |
16,0 × 2,00 |
120 m |
088X0951 |
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FH PEXa pipes |
16,0 × 2,00 |
240 m |
088X0952 |
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FH PEXa pipes |
16,0 × 2,00 |
400 m |
088X0969 |
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FH PEXa pipes |
16,0 × 2,00 |
600 m |
088X0953 |
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FH PEXa pipes |
16,0 × 2,20 |
240 m |
088X0954 |
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FH PEXa pipes |
18,0 × 2,00 |
240 m |
088X0957 |
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FH PEXa pipes |
18,0 × 2,00 |
600 m |
088X0958 |
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FH PEXa pipes |
20,0 × 2,00 |
120 m |
088X0959 |
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FH PEXa pipes |
20,0 × 2,00 |
400 m |
088X0961 |
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FH PEXa pipes |
25,0 × 2,30 |
200 m |
088X0963 |
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Accessories |
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Connection |
Size |
Code no. |
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16,0 × 2,0 mm |
088X1030 |
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Screw coupling |
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20,0 × 2,0 mm |
088X1031 |
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16,0 × 2,0 mm |
088X1032 |
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Press coupling |
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18,0 × 2,0 mm |
088X1033 |
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“TH” jaw profile. |
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20,0 × 2,0 mm |
088X1034 |
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* We recommend to use compatible “TH” jaws profile from the suppliers: Novopress, Rems and Klauke. |
© Danfoss | FEC | 2021.09 |
AI294453823003en-000701 | 1 |
Data Sheet FH PEXa Pipes
Accessories |
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Product |
Connection |
Size |
Code no. |
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G ½” A, |
14,0 × 2,0 mm |
013G4144 |
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external thread |
16,0 × 2,0 mm |
013G4146 |
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external thread |
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14,0 × 2,0 mm |
013G4154 |
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16,0 × 2,0 mm |
013G4156 |
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G ¾”, |
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16,0 × 2,2 mm |
013G4163 |
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internal thread |
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internal thread |
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18,0 × 2,0 mm |
013G4158 |
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20,0 × 2,0 mm |
013G4160 |
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Technical specifications |
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Materials |
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PEXa / EVOH |
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Max. working pressure |
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6 bar |
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Max. flow temperature (Short term) |
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110 °C |
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Max. working temperature |
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95 °C |
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Oxygen barrier |
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EVOH |
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Linear expansion coefficient |
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1,4 × 10-4 K-1 |
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Thermal conductivity |
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λ = 0,41 W/m K |
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Oxygen-tightness according to DIN 4726 |
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< 0,1 g/m³ × d |
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Colour |
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Natural |
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Working conditions |
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Temperature |
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Time |
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Safety Factor |
Pressure |
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Normal |
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Reinforced |
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20 °C |
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50 years |
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1,5 |
18 bar |
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19,8 bar |
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40 °C |
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50 years |
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1,5 |
14 bar |
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15,6 bar |
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60 °C |
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50 years |
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1,5 |
11 bar |
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12,4 bar |
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70 °C |
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25 years |
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2,0 |
7 bar |
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8,4 bar |
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95 °C |
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25 years |
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2,0 |
5 bar |
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6,4 bar |
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Minimum bending radius |
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Pipe dimension |
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Manual pipe bender radius |
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with bending springs |
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16 mm |
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80 mm (5 × outside diameter) |
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20 mm |
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100 mm (5 × outside diameter) |
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25 mm |
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125 mm (5 × outside diameter) |
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2 | © Danfoss | FEC | 2021.09 |
AI294453823003en-000701 |
Data Sheet |
FH PEXa Pipes |
Pressure loss |
Mass flow, kg/h |
10000 |
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1 |
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8000 |
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0 |
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8. |
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0 |
9 |
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Flow |
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7 . |
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0 |
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6000 |
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6 . |
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5 |
. |
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velocity |
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0 |
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4000 |
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0 |
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. |
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(m/s)] |
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4 |
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0 |
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3 |
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2000 |
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0 |
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2 |
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1000 |
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800 |
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1 |
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600 |
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400 |
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mm |
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6 |
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/2 |
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32 |
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200 |
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Ø |
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mm |
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0 |
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25/2 |
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Ø |
26/2 |
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Ø |
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mm |
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100 |
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/16 |
mm |
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20 |
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Ø |
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0/15 |
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2 |
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80 |
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Ø |
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4 |
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/1 |
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mm |
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Ø18 |
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3 |
mm |
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7/1 |
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60 |
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Ø1 |
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2 |
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/1 |
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Ø16 |
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40 |
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0mm |
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/1 |
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Ø14 |
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20 |
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10 |
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 10 1 |
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2 |
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3 |
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4 |
5 |
6 |
7 |
8 9 10 2 |
2 |
3 |
4 |
5 |
6 |
7 |
8 9 10 3 |
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100 |
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1000 |
Pressure loss, kPa/m
Water temperature: 40 °C.
© Danfoss | FEC | 2021.09 |
AI294453823003en-000701 | 3 |