In Germany “DVGW – German Technical and Scientific Association for Gas and Water” is the competence network for all questions related to gas and water. DVGW CERT GmbH is the largest gas and water industry certification body in Europe, covering all the certification procedures required in the gas and water. DVGW Deutsche Vereinigung des Gas- und Wasserfaches e.V.. Technisch- wissenschaftlicher Verein. Josef-Wirmer-Str D Bonn. Telefon: +49 (0)

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This list dgw include the chemical name of the chemical compound, including the CAS-No. The recipe must, dependent on the type of material, be in accordance with the actual positive list of elastomer guideline, KTW guideline or coating guideline. Gas and Energy Transition. DVGW standard W describes a method for the assessment of enhancement of microbial growth on non-metallic materials in contact with drinking water. Nitrates and Drinking Water.

Safety and Quality Management. The services are tailor-made to meet the requirements of the industry and to ensure efficient meshing of the various processes. If you continue to use the website, you agree to the use of dvgs. Impartiality, quality and reliability are the top priorities in certification work. Service Portfolio Testing and Certification.

Under certain conditions, a prolongation for further five years is possible. Search Contact Heiko Delong Tel.: Gas and Energy Transition Integrated Energy. For the disclosure of the recipe d270 confidentiality agreement can be signed. Efficient Use of Gas. Standardisation List of English Standards. Quality assurance for energy and water supply. ERHARD is one of the most important manufacturers of water valves w2270 the world with experience dating back over years The certificate automatically becomes invalid if the requirements, even for the composition, change, or if the recipe or production is modified.


Together with test laboratories, the company certifies and monitors gas and water industry products, quality and environmental management systems to DIN EN ISO ff. Our subsidiaries do not just focus on sales activities but also dggw service, repair and spare parts supply Information and Know-How Transfer.

This is very important for the hygienic- microbiological point of view. This website uses cookies. Imprint Terms Print Sitemap. DVGW W – Drinking water approval for materials Materials which are used in the drinking water sector, must have a surface which dvyw an unwanted surface fouling by microorganism.

Certificate stating our DVGW-Recognition

For disclosure of recipe all the substances and additives have to be identified. Water treatment Water transmission Water distribution network House connection Dams and hydropower Irrigation Fire protection network Industrial water applications Sewage and treatment. Safety and Security Technical Safety Gas.

This approach ensures that the individual procedures are tailored to the needs of the gas and water industries and are tightly meshed. Testing and Certification Ensuring safety, hygiene and quality standards. It is necessary that in addition to various technical and mechanical requirement also be guaranteed the hygienic.


List of English Standards. The main objective of all certification work is to ensure that there are no safety, hygiene or environmental objections to the products and companies certified.

The recipe w20 the detailed chemical composition of the material from which svgw product is made. As a major manufacturer of valves we are present all over the world. Vocational Training and Qualifications. Materials which are used in the drinking water sector, must have a surface which excludes an unwanted surface fouling by microorganism.

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DVGW-Testing Laboratory

With a DVGW CERT certificate, dvgww manufacturers, specialist companies, utilities and experts can demonstrate to their customers and market partners that they w2270 with the state of the art in their field of activities. The validity of a W test certificate is based on elsewhere specified regulations but ends 5 years after date of issue.

Thus it is a material test and only for multilayer systems such as composite pipes the test is carried out on the product.

The test starts with the full disclosure of the recipe. Technical innovations can only be beneficial if they actually work in practice. W27 addition it cooperates with more than 40 DVGW-recognized testing laboratories in the field of gas technology, electrical engineering, mechanical engineering, material testing, plastics, drinking water and hygiene.