• June 16, 2019

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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The recipe must, dependent on the type q270 material, be in accordance with the actual positive list of elastomer guideline, KTW guideline or coating guideline.

Vocational Training and Qualifications. Our subsidiaries do not just focus on dvvgw activities but also on service, repair and spare parts supply Imprint Terms Print Sitemap. For the disclosure of the recipe a confidentiality agreement can be signed.

Under certain conditions, a prolongation for further five years is possible. Information and Know-How Transfer.

The recipe means the detailed chemical composition of the material from which the product is made. This is very important for the hygienic- microbiological point of view. Efficient Use of Gas. Together with test laboratories, the company certifies and monitors gas and water industry products, quality and environmental management systems to DIN EN ISO ff. Documents ready for download – click here! Water treatment Water transmission Water distribution network House connection Dams and hydropower Irrigation Fire protection network Industrial water applications Sewage and treatment.


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.

Gas and Energy Transition. Service Portfolio Testing and Certification.

DVGW W270 – Drinking water approval for materials

Materials which are used in the drinking water sector, must dvyw a surface which excludes an unwanted surface fouling by microorganism. Safety and Quality Management. This list must include the chemical name of the chemical compound, including the CAS-No. 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.

Search Contact Heiko Delong Tel.: The services are tailor-made to meet the requirements of the industry and to ensure efficient meshing of the various processes.

DVGW: Testing and Certification

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.

Technical innovations can only be beneficial if they actually work in practice. 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. Impartiality, quality and reliability are the top priorities in certification work. The validity of a W test certificate is based on elsewhere specified regulations but dvhw 5 years after date of issue.

List of English Standards.

As a major manufacturer of valves we are present all over the world. It is necessary that in addition to various technical and mechanical requirement also be guaranteed the hygienic. Standardisation List of English Standards. Gas and Energy Transition Integrated Energy. Testing and Certification Ensuring safety, hygiene and quality standards. For disclosure of recipe all the substances and additives have to be identified.


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.

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. ERHARD is one of the most important manufacturers of water valves in the world with experience dating back over years This approach ensures that the individual procedures are tailored to the needs of the gas and water industries and are tightly meshed.

The certificate automatically becomes invalid if the requirements, even for the composition, change, or if the recipe or production is modified.

Quality assurance for energy and water supply. Safety and Security Technical Safety Gas.

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