Standards for the water connection

As in all areas, there are a large number of existing standards in the area of ​​water connections, which must be adhered to. Some things are curious at first glance, but of course the standards make sense. What is to be considered when connecting the water is reported in this article.

Standardized dimensions for threads

In the area of ​​the water connection, there are a variety of thread sizes. The metric system, on the one hand, and the customs system on the other, play a role here. Both systems can not be combined. The DIN 2440 prescribes the following thread sizes:

  • R 1/16 "
  • R 1/8 "
  • R 1/4 "
  • R 3/8 "
  • R 1/2 "
  • R 3/4 "
  • R 1 "
  • R 1 1/4 "
  • R 1 1/2 "
  • R 2 "

DIN EN 200 and TC 164

For the sanitary area the DIN EN 200 is valid. The goal is the creation of a Europe-wide uniform standardization of all areas. DVGW, as well as other national and international committees, which have been successfully striving to standardize standards since the early 1990s, are involved in this.

The technical rules for which the Technical Committee TK 3.1 is responsible at DVGW are subdivided as TC 164 into the following areas:

  • WG 2 "Drinking water installation in buildings"
  • WG 3 "Material in contact with drinking water"
  • WG 4 "Protection of drinking water and requirements for the safety device"
  • WG 7 "Building Fittings", formerly TC 36
  • WG 8 "Sanitary fittings", formerly TC 34
  • WG 10 "drinking water heater"
  • WG 12 "Hoses for sanitary fittings"
  • WG 13 "Water Treatment Systems"
  • WG 14 "building and safety valves

These standards must be adhered to. A further harmonization of international standards is aimed at, the unification of other areas is rapidly advanced.

In addition, there are still national supplementary standards, such as DIN 806-2 and DIN 806-3, which only apply in Germany.

Standards also for home improvement

Even do-it-yourselfers have to think of numerous standards in simple work. For example, in the area of ​​the water connection and in the sanitary area, there are prescribed minimum heights in which connection fittings must be installed.

For example, angle valves must be placed at a distance of 150-200 mm from each other and at a height of 530-600 mm. The drainage of a washbasin must always be in the height of 500 - 560 mm, for the upper edge of the washbasin the rule applies that it must be exactly 88 cm high.

Always connect the connection lines so that cold water is always on the right, hot water always on the left. This is problematic, especially in older buildings, where the connections can quite well be reversed. Therefore, in old installations always check the cold and hot water pipes to see if they are actually correct.

Video Board: The Energy-Water Connection