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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Information and Know-How Transfer. Gas and Energy Transition.

DVGW W , DIN EN – TZW | Technologiezentrum Wasser

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. ERHARD is one of the most important dvvgw of water valves in the world with experience dating back over years Gas and Energy Transition Integrated Energy.

D270 of English Standards. Imprint Terms Print Sitemap. For disclosure of recipe all the substances and additives have to be identified. Technical innovations can only be beneficial if they actually work in practice.

Documents ready for download – click here! Under certain conditions, a prolongation for further five years is possible. This approach ensures that the individual procedures are tailored to the needs of the gas and water industries and are tightly meshed. It is necessary that in addition to various technical and mechanical requirement also be guaranteed the hygienic.


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.

Search Contact Heiko Delong Tel.: This is very important for the hygienic- microbiological point of view. 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. The recipe means the detailed chemical composition of the material from which the product is made.

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

fvgw Materials which are used in the drinking water sector, must have a surface which excludes an unwanted surface fouling by microorganism. Safety and Quality Management. 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. Safety and Security Technical Safety Gas.

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

Vocational Training and Qualifications. Water treatment Water transmission Water distribution network House connection Dams and hydropower Irrigation Fire protection network Industrial water applications Sewage and treatment. Quality assurance for energy and water supply. If you continue to use the website, you agree to the use of cookies. DVGW standard W describes a method for the assessment of enhancement of microbial growth on non-metallic materials in contact dvvw drinking water.

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. The services are tailor-made to meet the requirements of the industry w2770 to ensure efficient meshing of the various processes.


Our subsidiaries do not just focus on sales activities but also on service, repair and spare parts supply The validity of a W test certificate is based on elsewhere specified regulations but ends 5 years after date of issue. This website uses cookies.

As a major manufacturer of valves we are present all over the world. Together with test laboratories, the company certifies and monitors gas and water industry products, quality and environmental management systems to DIN EN ISO ff.

Efficient Use of Gas. Testing and Certification Ensuring safety, hygiene and quality standards. The test starts with the full disclosure of the recipe. Nitrates and Drinking Water.

Impartiality, quality and reliability are the top priorities in certification work. Standardisation List of English Standards. Service Portfolio Testing and Certification. Thus it is a material test and only for multilayer systems such as composite pipes the test is carried out on the product.

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

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