EVS-EN 16712-1:2015

1.1  This European Standard defines requirements and tests which apply to inductors PN 16 which are used to proportion foam concentrate or other additives to the water stream and work using the Venturi principle.
1.2  This European Standard is not applicable to inductors which are integrated in self-inducting foam branchpipe.
1.3  This European Standard is not applicable to inductors which have been manufactured before its date of publication as European Standard.