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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As a major manufacturer of valves we are present all over the world. Under certain conditions, a prolongation for further five years is possible. 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.

Service Portfolio Testing and Certification. Gas and Energy Transition Integrated Energy. The test starts with the full disclosure of the recipe. Technical innovations can only be beneficial if they actually work in practice. This website uses cookies.

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

Standardisation List of English Standards. ERHARD is one of the most important manufacturers s270 water valves in the world with experience dating back over years Information and Know-How Transfer. Search Contact Heiko Delong Tel.: This list must include the chemical name of the chemical compound, including the CAS-No.


Vocational Training and Qualifications.

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

For disclosure of recipe all the substances and additives have to be identified. Safety and Quality Management. Gas and Energy Transition. Impartiality, quality and reliability are the top priorities in certification work. Our subsidiaries do not just focus on sales activities but also on service, repair and spare parts supply This approach ensures that the individual procedures are tailored to the needs of the gas and water industries and are tightly meshed.

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.

This is very important for the hygienic- microbiological point of view. Materials which are used in the drinking water sector, must have a surface which excludes an unwanted surface fouling by microorganism.

Certificate stating our DVGW-Recognition

Efficient Use of Gas. Safety and Security Technical Safety Gas. DVGW standard W describes a method for the assessment of enhancement of microbial growth on non-metallic materials in contact w27 drinking water.


List of English Standards. It is necessary that in addition to various technical and mechanical requirement also be guaranteed the hygienic. 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 and to ensure efficient meshing of the various processes.

Imprint Terms Print Sitemap. Testing and Certification Ensuring safety, hygiene and quality standards. The validity of a W test certificate is based on elsewhere specified regulations but ends 5 years after date of issue.


For the disclosure of the recipe a confidentiality agreement can be signed. 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. 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 certificate automatically becomes invalid if the requirements, even dvyw the composition, change, or if the recipe or production is modified. If you continue to use the website, you agree to the use of cookies.