DIN2696-1999EN.Прокладкилинзовые(Lens)

DEUTSCHE NORMAugust 1999Lenticular ring joint gaskets for flanged jointsN26961CS23.040.80SupersedesApril 1972 edition.Flanschverbindungen mit DichtlinseIn keeping with current practice in standards published by the international Organization for Standardization(ISO),a comma has been used throughout as the decimal marker.ForewordThis standard has been prepared by Technical Committee Flansche und ihre Verbindungen of the Normen-ausschuss Rohre,Rohrverbindungen und Rohrleitungen(Pipes and Pipe Joints Standards Committee).Amendments.This standard differs from the April 1972 edition as follows:a)The standard now only covers nominal sizes up to DN 200.b)For each PN designation (except for PN 400),two dimension series per nominal size have beenspecified.c)Technical delivery conditions have been specified.d)Appendices A and B have been included.Previous editionDlN2696:1972-04.All dimensions are in millimetres1 ScopeThis standard applies to lenticular ring joint gaskets for flanged joints in piping systems operating atpressures exceeding 63 bar.It specifies dimensions and the design of DN 10 to DN 200 gaskets rated forpressures from 63 bar to 400 bar.2 Normative referencesThis standard incorporates,by dated or undated reference,provisions from other publications.Thesenormative references are cited at the appropriate places in the text,and the titles of the publications arelisted below.For dated references,subsequent amendments to or revisions of any of these publicationsapply to this standard only when incorporated in it by amendment or revision.For undated references,thelatest edition of the publication referred to applies.DIN 2627 PN 400 welding neck flangesDIN 2628 PN 250 welding neck flangesContinued on pages 2 to 12.Translation by DIN-Sprachendienst.In case of doubt.the German language original should be consulted as the authoritative text.No part of this translationmay be reproduced without the prior pemission ofRef.No.DlN2696:1999-08es Instrut for Normung e.V..Berlin.Bouth Vertag GmbH,10772 Berin,Germary.has the exclusive right of sale for German Standards (DN-Nomen).English price group 09 Sales No.010903.01