Silane cross-linked polyethylene pipe INTERSOL ... - Watts Industries

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SILANE CROSS-LINKED POLYETHYLENE PIPE 4 - MANUFACTURING PROCESS AND TESTING OF INTERSOL ® PEX-b 8 Silane + liquid Anti-oxidant Non cross-linked polyethylene RAW MATERIAL Testing (organoleptic melt index, etc.) EXTRUSION Anti-diffusion barrier Process control (temperature-screw revs., etc.) FORMING Inspection (appearance, centering, wall thickness, O.D., marking) CROSS-LINKING Process control (bath temperature, duration) FINISHED PRODUCT Final testing (degree of cross-linking, resistance to internal pressure Vs. temperaturecold rupture tests, tensile tests) INTERSOL-iip 206-UNI-315-PE-X 15x2.5-PN 16 10bar/80°C Cross-linked polyethylene 5 - PROPERTIES OF INTERSOL ® PEX-b Use of INTERSOL ® PEX-b offers various advantages, above all: 1) Resistance to electrochemical and chemical corrosion 2) Long life in relation to temperature and pressure 3) Resistance to elevated temperature peaks (up to 100°C) 4) Resistance to chemicals 5) Low noise level 6) Resistance to plastic creep 7) Low pressure drop 8) Low formation of deposits 9) Resistance to low temperatures 10) Flexibility
SILANE CROSS-LINKED POLYETHYLENE PIPE 5.1 - Technical data of INTERSOL ® PEX-b Table 3 Mechanical properties Standard Unit Value Specific gravity DIN 53479 gr/cm 3 0,95 Tensile strength (20°C) DIN 53455 MPa 22 - 27 Elongation at break (20°C) DIN 53455 % 350 - 550 Tensile modulus of elasticity (20°C) DIN 53457 MPa > 550 Impact strength (20°C) DIN 53453 KJ/m 2 No breakage Moisture absorption (100°C) DIN 53472 % 0,05 Thermal properties Operating temperature - °C -100 / +100 Softening point - °C 125 Coefficient of linear expansion (20°C) - °C -1 1,4*10 -4 Coefficient of linear expansion (100°C) - °C -1 2,0*10 -4 Impact strength (20°C) - KJ/Kg°C 2,0 Moisture absorption (100°C) DIN 52612 W/m°C 0,35 - 0,41 Electrical properties Specific internal resistance (20°C) - m 10 15 Dielectric constant (20°C) - - 2,2 Dielectric strength (20°C) - KV/mm 20 9 6 - STANDARD SIZES OF INTERSOL ® PEX-b Standard pipe dimensions depend on the field of application and typical standards of each nation. Above all, distinction can be made between two sectors, namely: -Floor heating and connection of radiators -Plumbing systems 6.1 - Floor heating and connection of radiators Two types of pipe can be used, namely: a) with oxygen diffusion barrier, consisting of a film of coextruded ethylene vinyl alcohol (EVOH) Table 4 O.D. - for wall thickness Typical Countries Weight (Kg/m) Capacity (l/m) 14 x 2 DD Germany 0,083 0,074 16 x 2 DD Italy 0,097 0,109 17 x 2 DD Germany 0,102 0,126 18 x 2 DD Italy 0,109 0,148 20 x 2 DD Italy - Germany 0,122 0,193 Standard length: 100 - 120 - 200 - 240 metres b) without anti-oxygen barrier Table 5 O.D. - for wall thickness Typical Countries Weight (Kg/m) Capacity (l/m) 12 x 2 Italy 0,065 0,048 16 x 2 Italy 0,092 0,108 18 x 2 Italy 0,104 0,150 20 x 2 Italy 0,119 0,194 12 x 1,1 France 0,042 0,073 16 x 1,5 France 0,072 0,128 20 x 1,9 France 0,112 0,201 25 x 2,3 France 0,167 0,318 Standard length: 100 - 120 - 200 - 240 metres
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