ISO 9803-2-2020 pdf free

04-20-2021 comment

ISO 9803-2-2020 pdf free.Vacuum technology —Mountingdimensions of pipeline fittings — Knife-edge flange type.
Foreword:ISO (the International Organization for Standardization) is a worldwide federation of national standardsbodies (IS0 member bodies). The work of preparing International Standards is normally carried outthrough ISO technical committees. Each member body interested in a subject for which a technicalcommittee has been established has the right to be represented on that committee.Internationalorganizations, governmental and non-governmental, in liaison with ISO, also take part in the work.ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters ofelectrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance aredescribed in the ISO/IEC Directives, Part 1.In particular, the different approval criteria needed for thedifferent types of lSO documents should be noted.This document was drafted in accordance with theeditorial rules of the ISO/IEC Directives,Part 2 (see www.iso.org/directives).
ISO 9803:1993 defined only those pipeline fittings whose flanges are non knife-edge type, as defined inISO 1609:1986 and ISo 2861-1:1974.The previous revision divided ISO 9803 into two parts:
ISo 9803-1, in which fittings with non knife-edge flanges are defined, and this part of IS0 9803, in which fittings with knife-edge flanges as specified in IS0 3669 are defined.This document deals with dimensions of pipeline fittings whose flanges are of knife-edge type, asdefined in ISO 3669.
This document specifies mounting dimensions for vacuum pipeline fittings (elbows, tees and crosses)of knife-edge flanges for nominal bores from 16 mm to 200 mm.The following referenced documents are indispensable for the application of this document.For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) applies.
ISO 3669,Vacuum technology – Dimensions of knife-edge flanges
For the purposes of this document, the terms and definitions given in ISO 3669 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
ISo online browsing platform: available athttps://www.iso.org/obp
IEC Electropedia: available at http://www.electropedia.org/
Mounting dimensions of the vacuum pipeline fittings shall be as specified in Table 1.SeeFigures 1 to 3.
Flange dimensions shall be as specified in ISO 3669.One or more flange should be rotatable.ISO 9803 pdf download.

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