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. The dvg 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 vdgw treatment. Testing and Certification Ensuring safety, hygiene and quality standards. List of English Standards.

DVGW-Testing Laboratory

The test starts with the full disclosure of the recipe. 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.


Efficient Use of Gas. Gas and Energy Transition Integrated Energy.

Drinking Water –

The validity of a W test certificate is based on elsewhere specified regulations but ends 5 years after date of issue. Vocational Training and Qualifications. The certificate automatically becomes invalid if the requirements, even for the composition, change, or if the recipe or production dvg modified.

Our subsidiaries do not just focus on sales activities but also on service, repair and spare parts supply Standardisation List of English Standards.

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

DVGW standard W describes a method for the assessment of enhancement of microbial growth on non-metallic materials in contact with drinking water. Impartiality, quality and reliability are the top priorities in certification work. If you continue to use the website, you agree to the use of cookies.

This approach ensures that the individual procedures are tailored to the needs of the gas and water industries and are tightly meshed. This list must include the chemical name of the chemical compound, including the CAS-No. This website uses cookies.

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.


Imprint Terms Print Sitemap. Service Portfolio Testing and Certification. Quality assurance for energy and water supply. Safety and Quality Management. This is very important for the hygienic- microbiological point of view.

It is necessary that in addition to various technical and mechanical requirement also be guaranteed the dvwg.

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.

Gas and Energy Transition. Thus it is a material test and only for multilayer systems such as composite 2w70 the test is carried out on the product. Documents ready for download – click here! Nitrates and Drinking Water.

The recipe means the detailed chemical composition of the material from which the product is 2w70. Technical innovations can only be beneficial if they actually work in practice.