This standard specifies supplementary requirements for tests, test procedures and acceptance criteria of industrial valves. The specified tests may be used as type tests, production tests or acceptance tests. The application of these tests is specified in the appropriate product or performance standards. When specified as a normative reference in a valve product or performance standard, this standard should be considered in conjunction with given specific requirements of this valve product or performance standard. Where requirements in a product or performance standard differ from those given in this standard, the requirements of the product or performance standard apply. This document has been prepared by Technical Committee CEN/TC 69/WG 1 "Basic standards", the secretariat of which is held by DIN.