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The interface between isolation valve and installation set was often a problem for operators of gas and water pipelines, because of a large number of connection variants.

The aim of the DVGW work sheet GW 336 is, to manage the application of buried valves in the future with three different, universell usable interface sizes of installation sets. It was specified the dimensions and executions of the valves (interface to installation set) and dimensions and executions of the installation set (interface to valve).


  • ERHARD GmbH & Co. KG
  • Meeboldstra├če 22
  • 89522 Heidenheim, Germany