DIN 50930 6 PDF

Die Einhaltung der Norm stellt somit sicher, dass die Grenzwerte der Trinkwasserverordnung am Zapfhahn einer Hausinstallation unter den o. Beispielsweise werden Rohrarmaturen und Rohrverbinder in Hausanschlussleitungen aus Kunststoff wesentlich geringer bewertet B-Wert 0,04 , als in Installationen aus Kunststoff oder nicht rostendem Stahl B-Wert 0, Der B-Wert dient dem Installateur nur zur Information und soll zeigen, dass die wasserseitigen Anforderungen z. Der Umfang der Wasseranalyse ist in Bild 5 angegeben. Technisch unvermeidbar ist, dass Korrosionsprodukte in das Trinkwasser gelangen. Dieser Grenzwert ist unter den Bedingungen der Hausinstallation praktisch nicht einzuhalten.

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The changes to metallic materials by corrosion and measures that can be taken to prevent corrosion are covered in the European standards series DIN EN However, this series does not deal with the changes in the quality of the drinking water due to contact with metallic materials; thus, DIN will be retained as a national regulation even upon publication of the DIN EN standard series.

These materials were still permitted to be used until the new threshold value for lead in accordance with the Drinking Water Ordinance took effect on December 1, Metallic materials proven to be suitable for hygienic drinking water use can be found on the list issued by the Umweltbundesamt Federal Environment Agency - UBA , "Empfehlung des Umweltbundesamts - Trinkwasserhygienisch geeignete metallene Werkstoffe" Recommendation of the Federal Environmental Agency on metallic materials hygienically suitable for contact with drinking water.

This standard defines hygienic requirements for metallic materials. These requirements are intended to ensure that the binding specifications of the Drinking Water Ordinance TrinkwV can be complied with when these materials are used for products in contact with drinking water for example, pipes, pipe connections, fittings, water meters, appliances.

The evaluation of the results of testing a material in accordance with DIN EN and DIN EN described in this standard enables the hygienic suitability of a metallic material to be determined, either with a local drinking water or with all drinking waters.

Certain pipe materials cannot be used in all drinking waters or under all operating conditions. The additional requirements for the restricted use of pipe materials with drinking water of a certain quality are also part of this standard. The assessment of materials according to this standard is limited to installations for cold drinking water. However, the materials receiving positive evaluations can also be used with drinking water which has been heated, as long as the limitations outlined in clause 6 are taken into consideration.

Protective measures for existing drinking water installations whose operating conditions or age could result in the parameters being exceeded are described in clause 7. If the legal requirements for drinking water quality cannot be met in existing installation systems as a result of unfavourable water compositions and operating conditions or improper choice of materials, the impermissible changes in the drinking water quality can be counteracted by protective measures.

The effectiveness of these measures can be evaluated using the specifications in this standard. Corrosion processes which lead to damage to the component are not covered by this standard.

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