NF EN ISO 16139/A1:2019

This amendment is intended to: take into account the new edition of standards NF EN 736-3:2008 and NF EN 558:2017 for the definition of terms and face-to-face and face-to-axis dimensions of valve appliances; correct Table 1 which gives the minimum values of the reduction factor, and Table 2 which gives the minimum required marking; update Annex ZA which gives the relationship between the standard and the essential requirements of the Pressure Equipment Directive 2014/68/EU.