CSN EN 19 This document specifies the requirements for marking and labelling of industrial metallic valves. It also specifies the method of applying respective markings on a valve. This document is to be read together with the marking and labelling provisions stipulated in a valve product standard. The requirements for markings on valves made from plastic materials are not within the scope of this document. Original English text of CSN EN Standard. The price of the Standard included all amendments and correcturs.
