EVS-EN 1253-8:2022

This document classifies floor gullies for domestic wastewater for use inside buildings, gives guidance, gives guidance for places of installation and specifies requirements for the construction, design, performance and marking of factory made gullies for buildings, irrespective of the material, for use in drainage systems requiring a trap with combined mechanical closure and water seal (referred to as floor gullies).
NOTE  Floor gullies with combined mechanical closure and water seal are not covered by EN 1253-1, EN 1253-6, EN 1253-7.
These products are intended to be installed where both condition below are fulfilled:
-  the building does not exceed a ground-floor and three floors above;
-  infrequent use could result in a water seal evaporating.