The multilayer PEX-Al-PEX GAS PROTEK pipe belonging to the Multypexalfa gas line is a PEXb-Al-Pexb pipe produced by Plastica Alfa for the transport of gaseous fuels (natural gas and LPG) in domestic installations. The pipe consists of five layers: the two PExb layers (inner and outer) are bonded to the aluminium intermediate layer by two stabilised polymer bonding layers. The aluminium layer provides an oxygen barrier, reduces linear thermal expansion effects and gives the tube dimensional stability and flexural strength.
The corrugated sheath is made of self-extinguishing, UV-resistant yellow PPB and provides strong protection for the inner pipe in the case of installations in perimeter walls in both civil and industrial applications.
GENERAL CATALOGS AND TECHNICAL DATA SHEETS IN
VARIANT SIZE mt per roll sheath
CGTMG160 16 x 2.0 x 0.2 50 Ø 26
CGTMG160-100 16 x 2.0 x 0.2 100 Ø 26
CGTMG200 20 x 2.0 x 0.25 50 Ø 29
CGTMG260 26 x 3.0 x 0.3 25 Ø 35
CGTMG320 32 x 3.0 x 0.5 25 Ø 41
MAXIMUM WORKING PRESSURE:
0,5 bar
THERMAL CONDUCTIVITY:
0,40 W/mK
LINEAR THERMAL EXPANSION COEFFICIENT:
0,025 mm/m·K
ALLOWABLE TEMPERATURES:
-30°C ÷ 110°C
RUGOSITÁ INTERNA:
7·10^-6 m
CROSSLINKING METHOD:
B (silani)
MINIMUM BENDING RADIUS (with bending spring):
3,5 x Ø ext
MINIMUM BENDING RADIUS (without bending spring):
5 x Ø ext
OXYGEN PERMEABILITY:
0 mg/l
REFERENCE STANDARDS:
UNI 11344, ISO 17484-1, UNI/TS 11343, UNI 7129, DM 16/04/08
PRODUCT CERTIFICATES:
- KIWA UNI : Netherlands and Italy
CORRUGATED SHEATH FEATURES:
- REINFORCED POLYPROPYLENE SHEATH (PPB)
- ODOURLESS AND NON-TOXIC
- TOTALLY RECYCLABLE
THERMAL CONDUCTIVITY:
0.24 W/m – K
TENSILE RESISTANCE:
24 MPa
ULTIMATE ELONGATION:
10%
REFERENCE STANDARDS:
Self-extinguishing in accordance with DIN 4102-1/B1