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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DVGW – Innovation and setting standards in the gas and water sectors

Safety and Security Technical Safety Gas. For disclosure of recipe all the substances and additives have w720 be identified. Technical innovations can only be beneficial if they actually work in practice. The test starts with the full disclosure of the recipe. The certificate automatically becomes invalid if the requirements, even for the composition, change, or if the recipe or production is modified.

In 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.

Thus it is a material test and only for multilayer systems such as composite pipes the test is carried out on the product. Imprint Terms Print Sitemap. Gas and Energy Transition. This approach ensures that the individual procedures are tailored to the needs of the gas and water industries and are tightly meshed.

Service Portfolio Testing and Certification. This is very important for the hygienic- microbiological point of view. Vocational Training and Qualifications.


The recipe means the detailed chemical composition of the material from which the product is made. Efficient Use of Gas. As a major manufacturer of valves we are present all over the world.

This website uses cookies. The dvg objective of all certification work is to ensure that there are no safety, hygiene or environmental objections to the products and companies certified.

Quality assurance for energy and water supply. Standardisation List of English Standards.

Marking of water meter body housings acc. to DVGW Worksheet W421

List of English Standards. Materials which are used in the drinking water sector, must have a surface which excludes an unwanted surface fouling by microorganism. Impartiality, quality and reliability are the top priorities in certification work. Safety and Quality Management. Documents ready for download – click here! Information and Know-How Transfer.


The validity of a W test certificate is based on elsewhere specified regulations but ends 5 years after date of issue.

Gas and Energy Transition Integrated Energy. Testing and Certification Ensuring safety, hygiene and quality standards. Under certain conditions, a prolongation for further five years is possible. Water treatment Water transmission Water distribution network House connection Dams and hydropower Irrigation Fire protection network Industrial water applications Sewage and treatment. DVGW standard W describes a method for the assessment of enhancement of microbial growth on non-metallic materials in contact with drinking water.

Marking of water meter body housings acc. to DVGW Worksheet W

ERHARD is one of the most important manufacturers of water valves in the world with experience dating back over years The services are tailor-made to meet the requirements of the industry and to ensure efficient meshing of the various processes.


DVGW W – Drinking water approval for materials Materials which are used in the drinking water sector, must have a surface which excludes an unwanted surface fouling by microorganism. It is necessary that in addition to various technical and mechanical requirement also be guaranteed the hygienic. Together with test laboratories, the company certifies and monitors gas and water industry products, quality and environmental management systems to DIN EN ISO ff.

Search Contact Heiko Delong Tel.: This list must include the chemical name of the chemical compound, including the CAS-No. With a DVGW CERT certificate, product manufacturers, specialist companies, utilities and experts can demonstrate to their customers and market partners that they comply with the state of the art in their field of activities. If you continue to use the website, you agree to the use of cookies. Our subsidiaries do not just focus on sales activities but also on service, repair and spare parts supply Nitrates and Drinking Water.

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.

For the disclosure of the recipe a confidentiality agreement can be signed.

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