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Giacomini S.p.A.

Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia

 consulenza.prodotti@giacomini.com

 +39 0322 923372 - giacomini.com

 NOTE. R996T pipes in PEX-b comply with EN ISO 15875 standard, which defines the physical and dimensional features, and are verified following EN ISO 15875 and DIN

16892 standards, that allow evaluation of the resistance to the combined pressure and temperature stress, with reference to the relevant regression curves.

50

30

20

10

9

8

7

6

5

4

3

2

1

40

0,1

1

10

102

103

104

105

106

1

5

10 25 50 100

110°C

90°C

95°C

80°C

70°C

60°C

50°C

40°C

30°C

20°C

10°C

Continuous exercise period [h]

Continuous exercise period [years]

Resistance to combined pressure and temperature stress with respect to regression curves



Technical data

• Application classes (EN ISO 15875): 4, 5

• Not suitable for the transport of domestic water

• Density at 23 °C: > 0,939 g/cm3

• Thermal expansion coefficient: (1,9 x 10−4)/K

• Thermal conductivity: 0,38 W/(m K)

• Breaking load: 31 MPa

• Breaking elongation: 520 %

• Elasticity module at 23 °C: 540 MPa

SIZE

CLASS 4

CLASS 5

16 x 1,5

8 bar

6 bar

16 x 2,0

10 bar

8 bar

17 x 2,0

10 bar

8 bar

18 x 2,0

10 bar

8 bar

20 x 2,0

8 bar

6 bar

25 x 2,3

8 bar

6 bar

For each application classes, maximum usage pressure

can be evinced from the table below:

• All pipes are suitable for carrying water for a period of 50

years at a temperature of 20 °C and an operating pressure

of 10 bar.

• All heating systems shall use as transfer fluid only water or

treated water.

Series of pipes (S)

S = d - s

2 · s

Standard Dimension Ratio (SDR)

SDR = 2 · S + 1 ≈ d

s

s: pipe nominal thickness

d: pipe nominal diameter

Regression curve

α

= p · d - s

2 · s

α: hydrostatic stress

p: induced hydrostatic pressure