Page 77 - QRedition5.0 062021

Quality Requirements Edition 5.0 European Enamel Association

7.21. QUALITY REQUIREMENTS FOR PORCELAIN AND VITREOUS ENAMELLED VALVES AND FITTINGS OF CAST IRON IN CONTACT WITH WATER

7.21.1 Application area

This norm is applicable for parts of cast iron in contact with raw water and drinking water.

7.21.2 Test methods

Item Name Comparable standards
3.9.5.3 cast iron quality DIN EN 1561, DIN EN 1563
3.9.3 determination of the hardness referring to Mohs EN 101
4.3 measurement of the thickness of the enamel coating EN ISO 2178, EN ISO 2360, EN ISO 1463
4.4 determination of the resistance to chemical corrosion by citric acid
or other acids at room temperature EN ISO 28706-1/9
4.6 determination of the resistance to chemical corrosion by boiling water and/or water vapour EN ISO 28706-2/14, EN ISO 28706-2/6
4.9 determination of the resistance to impact ISO 4532
4.13 determination, detection and location of defects (non-destructive) EN ISO 8289
4.18 determination of scratch resistance EN ISO 15695
4.19 determination of colour difference ISO 7724 Pt. 1, Pt. 2 and Pt. 3
4.26 determination of abrasion resistance ISO 6370-1 and ISO 6370-2
4.40 determination of thermal shock resistance of enamelled articles into water EEA Specification 8.6.4
4.48 determination of the resistance against corrosion and creeping after mechanical impact EEA specification 8.6.7
4.49 determination against climatic impact like weathering and UV-resistance EEA specification 8.6.8

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