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 test starts with the full disclosure of the recipe. Standardisation List of English Standards.

DVGW-Testing Laboratory

Quality assurance for energy and water supply. This is very important for the hygienic- microbiological point of view. The services are tailor-made to meet the requirements of the industry and to ensure efficient meshing of the various processes. Water treatment Water transmission Water distribution network House connection Dams and hydropower Irrigation Fire protection network Industrial water applications Sewage and treatment.

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

For the disclosure of the recipe a confidentiality agreement can be signed. Technical innovations can only be beneficial if they actually work in practice. Thus it is a material test and only for multilayer systems such w2270 composite pipes the test is carried out on the product. As a major manufacturer of valves we are present all over the world.

List of English Standards. If you continue to use the website, you agree to the use of cookies. Search Contact Heiko Delong Tel.: This approach ensures that the individual procedures are tailored to the needs of the gas and water industries and are tightly meshed.


Together with test laboratories, the company certifies and monitors gas and water industry products, quality and environmental management systems to DIN EN ISO ff. Vocational Training and Qualifications. ERHARD is one of the most important manufacturers of water valves dvbw the world with experience dating back over years 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.

Our subsidiaries do not just focus on sales activities but also on service, repair and spare parts supply Safety and Quality Management.


Gas and Energy Transition Integrated Energy. 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. Impartiality, quality and reliability are the top priorities in certification work. Efficient Use of Gas.

Documents ready for download – click here! The certificate automatically becomes invalid if the requirements, even for the composition, change, w20 if the recipe or production is modified. With a DVGW CERT certificate, product manufacturers, specialist companies, utilities and experts can demonstrate to their customers and xvgw partners that they comply with the state of the art in their field of activities.

For disclosure of recipe all the substances and additives have to be identified.

This website uses cookies. 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 must, dependent on the type of material, be in accordance with the actual positive list of elastomer guideline, KTW guideline or coating guideline.


DVGW standard W describes a method for the assessment of enhancement of microbial growth on non-metallic materials in contact with drinking water. Materials which are used in the drinking water sector, must have a surface which excludes an a270 surface fouling by microorganism. Safety and Security Technical Safety Gas.

DVGW W270 – Drinking water approval for materials

Information and Know-How Transfer. It is necessary that in addition to various technical and mechanical requirement also be guaranteed the hygienic.

Service Portfolio Testing and Certification. The validity of a W test certificate is based on elsewhere specified regulations but ends dvvgw years after date of issue.

Nitrates and Drinking Water. Under certain conditions, a prolongation for further five dcgw is possible. This list must include the chemical name of the chemical compound, including the CAS-No.

Gas and Energy Transition. Imprint Terms Print Sitemap. Testing and Certification Ensuring safety, hygiene and quality standards. The recipe means the detailed chemical composition of the material from which the product is made.