7. Pipes for underfloor systems
POLYSTOP pipe
Code
10 20 17
10 25 17
10 27 17
Material
PE-RT (II) / Al / PE-RT (II)
PE-RT (II) / Al / PE-RT (II)
PE-RT (II) / Al / PE-RT (II)
Diameter
Thickness
Length
mm
mm
mm
17
2.0
100
17
2.0
200
17
2.0
500
Specifications
Multilayer PE-RT type II polyethylene pipe, characterised by high plasticity and resist-
ance to high temperatures, produced in conformity with ISO 21003 (Class 4/8 bar
according to ISO EN 10508). The intermediate aluminium layer is a total barrier to the
oxygen absorption, and the PE-RT type II polyethylene outer pipe is particularly resist-
ant to abrasions and to UV-rays.
Use
POLYSTOP pipe is a multilayer pipe of diameter 17 mm made from an inner layer of
second-generation PE-RT (polyethylene for high temperatures type II), an intermediate
layer in a particularly soft aluminium alloy designed specifically for radiant system
pipes and an external protective layer of second-generation PE-RT, layers joined
together by two additional layers of adhesive.
The pipe thus obtained is a particularly suitable pipe for underfloor heating systems
because:
• It has all the low expansion and corrosion prevention characteristics of a multilayer
pipe;
• The second-generation PE-RT (type II) is a particularly durable product especially
at the typical temperatures of radiant systems;
• The use of PE-RT and a soft aluminium alloy allows an extremely easy installation
of the pipe;
• The presence of the aluminium layer allows the installed pipe to maintain its
position and to minimise the tensions on the bottom panel, which makes the pipe
particularly suitable in the case of low-thickness panels.
Technical characteristics
Properties
Material
External diameter
Internal diameter
Aluminium pipe thickness
Linear expandion coefficient
Thermal conductivity
Application class ISO 10508
Internal surface roughness
Minimum radius of curvature
Water content
Weight
Unit of
Measure
ISO 21003
mm
mm
mm
mm/mK
W/mK
-
mm
mm
l/m
kg/m
-
*Class 4= 60 °C/25 years + 40 °C/20 years + 20 °C /2.5 years + 70 °C/2.5 years + 100 °C/100 hours
Value
Multilayer
17
13
0.2
0.023
0.41
Class*4/ 8 bar
0.007
85
0.133
0.133
50
Underfloor Radiant Systems - Product Guide
Tel. +39 0425 75 88 11
Colour
sky-blue
