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

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SILANE CROSS-LINKED POLYETHYLENE PIPE 11.5 Behaviour to chemical agents 16 Cross-linked polyethylene exhibits good resistance to chemical agents. The following table shows the behaviour of INTERSOL ® PEX-b in relation to the substance and temperature where there is no external stress. SUBSTANCE 20°C 60°C SUBSTANCE 20°C 60°C SUBSTANCE 20°C 60°C acetic acid 10% formaldehyde 40% polyglycols acetone formic acid potassium chloride (wat. sol.) acrylonitrile frigene potassium dichromate 40% aliphatic esters fuel oil potassium hydroxide 30% allyl alcohol glycerine propanol aluminium sulphate (wat.sol.) glycol propionic acid 50% ammonia (wat. sol.) hexane propyl alcohol ammonium sulphate (wat.sol.) hydrofluoric acid 70% pure aniline aromatic esters hydrogen peroxide 30% pyridine beer hydrogen peroxide 100% silicone oil benzene hydrogen sulphide sodium hydroxide benzoic acid (wat. sol.) linseed oil sodium hypochloride bitumen liquid soap sulphur trioxide bleach liquor magnesium salts (wat.sol.) sulphuric acid 50% bromium maleic acid sulphuric acid 98% butanol mercury synthetic detergents butter methanol tetrahydrofuran butyl acetate methyl ethyl ketone tetralin butyne diol methyl phenol tincture of iodine butyric acid methylene chloride toluene carbon dioxide milk transformer oil carbon tetrachloride motor lubricants trichloroethylene chloroform naphtha turpentine chromic acid 50% naphthalene vaseline citric acid nitric acid 30% vegetable oils conc. hydrochloric acid nitric acid 50% washing detergents cyclanone nitrobenzene water cyclohexanol oleum wine cyclohexanone oxalic acid 50% xylene decalin ozone dibutyl phthalate paraffin oil dichlorobenzene petrol dichloroethylene petroleum diesel oil petroleum ether diethyl ether phenol ethyl acetate phosphates (water.sol.) ethyl alcohol phosphoric acid 95% ethylene glycol phthalic acid 50% Legend : Resistant Fairly resistant Non resistant
SILANE CROSS-LINKED POLYETHYLENE PIPE 12 - APPROVALS FOR INTERSOL ® PEX-b As the pipe manufacturing system is certified to ISO 9002, there are certain receiving, in-process and final test/inspection procedures, as already mentioned previously. Consequently all INTERSOL ® PEX-b pipes are submitted to in-house final testing, in accordance with the requirements of European standards in the sector, which differ according to the country of destination (e.g. UNI 9338/9349, DIN 16892/16893, DIN 4726/4729, UNE 53-381-89/53-023-86-53133-82, see previous table). Furthermore there are various product certifications, entrusted to officially recognized testing body which can be summed up as follows: 17 Table 15 Country Approval Body Floor heating Plumbing Main captions ITALY I I P – Istituto Italiano Plastici X X UNI 315 IIP 206 GERMANY SKZ X X DIN GEPRUEFT Süddeutsche (only chemical (only chemical DIN 4726 Kunstoff Zentrum physical tests) physical tests) DIN 16892 DIN 4726 DIN 16892 GERMANY DVGW - Igiene Institut X DVGW (migration) DW 8306 AL 2002 GERMANY MPA - NRW X Diffusionsdicht Materialprufungsamt (oxygen Nord-RheinWstfalen diffusion) FRANCE C.S.T.B. Centre Scientifique et X X Technique du Batiment PORTUGAL LNCE National Civil Engineering X X Laboratory HUNGARY EMI - TÜV X X Hungarian Section of German TÜV SPAIN AENOR Spanish Standards Institute X X U.S.A. NSF International X X Standard 14 Body Certification product standard ASTM F876-877, included chlorine, CSA 137.5. Standard 61 13 - COMPARISON OF DFFERENT PLASTICS USED IN HOT WATER PIPING Table 16 shows different behaviours of cross-linked polyethylene (PEX), polybutylene (PB) and polypropylene random copolymer (PP/R) materials with reference to certain important properties for applications in the heating and plumbing industries. Table 16 Property PEX PP-R PN Stability in hot water (95°C) A C B Long-term behaviour (up to 95°C) A C B Flexibility A B A Impact strength (also at low temperatures) A C B Elongation (longitudinal tensile test) C B C Toxicity A A A Creep properties A C B Thermal conductivity B B B Surface A A A A = very good B = good C = sufficient
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Silane cross-linked polyethylene pipe INTERSOL ... - Watts Industries

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