The equivalent DN numbers of valves having flanged ends, threaded ends, weld ends, capillary or compression ends shall be as given in Table A. NOTE If tests in the presence of a representative of the purchaser are specified, painted or coated valves from stock may be retested without removal of painting or coating. Valves with liners, internal linings or internal coatings that form a design feature of the valve may be tested with the liner or after lining or coating.
When using test equipment and procedures different to that detailed in this standard, the manufacturer shall be able to demonstrate the equivalence of such test procedures and acceptance criteria with the requirements of this standard. NOTE The test equipment can apply external loads sufficient to react to the forces resulting from the test pressure. The users of this standard should analyse the hazard resulting from the pressure and take proper safety precautions. Safety aspects of valve testing are not covered in this standard. For undated references the latest edition of the publication referred to applies including amendments. These normative references are cited at the appropriate places in the text and the publications are listed hereafter.įor dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. Where requirements in a product or performance standard differ from those given in this standard, the requirements of the product or performance standard apply. When specified as a normative reference in a valve product or performance standard, this standard has to be considered in conjunction with the specific requirements of that valve product or performance standard. The specified tests may also be used as type tests or acceptance tests. Annex A forms a normative part of this part of EN The tests and procedures detailed may also be used, when required, for type tests and acceptance tests. Special requirements, which are specific to one product or one performance standard only, are not included in this standard.ĭetails should be included in the appropriate standard. A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions.ĮN E Contents page Foreword For relationship with EU Directive s, see informative annex ZA, which is an integral part of this document. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This British Standard was Summary of pages published under the authority of the Standards Policy and This document comprises a front cover, an inside front cover, the EN title page, Strategy Committee on pages 2 to 15 and a back cover.Īmendments issued since publication Amd. Compliance with a British Standard does not of itself confer immunity from legal obligations. Users are responsible for its correct application. This publication does not purport to include all the necessary provisions of a contract. A list of organizations represented on this subcommittee can be obtained on request to its secretary. By using our site, you agree to our collection of information through the use of cookies.
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