1、BRITISH STANDARD BSEN 12220:1998 Ventilation for buildings Ductwork Dimensions of circular flanges for general ventilation The European Standard EN12220:1998 has the status of a British Standard ICS 91.140.30BSEN12220:1998 This British Standard, having been prepared under the directionof the Enginee
2、ring SectorBoard, was published underthe authority of the Standards Board and comesintoeffect on 15August1998 BSI 05-1999 ISBN 0 580 29674 1 National foreword This British Standard is the English language version of EN12220:1998. The UK participation in its preparation was entrusted to Technical Com
3、mittee RHE/2, Air distribution and air diffusion, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and E
4、uropean developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI St
5、andards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsibl
6、e for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages2 to5 and a back cover. This standard has been updated
7、(see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSEN12220:1998 BSI 05-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 1222
8、0 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN12220 April 1998 ICS 23.040.60; 91.140.30 Descriptors: Buildings, ventilation, airconditioning, aeraulic pipes, metal plates, pipe flanges, dimensions English version Ventilation for buildings Ductwork Dimensions of circular flanges for
9、general ventilation Rseau de conduits Brides circulaires pour ventilation gnrale Dimensions Lftung von Gebuden Luftleitungen Mae von runden Flanschen fr allgemeine Lftungszweche This European Standard was approved by CEN on13 February1998. CEN members are bound to comply with the CEN/CENELEC Interna
10、l Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.
11、This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are
12、 the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland andUnited Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Eu
13、ropisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN12220:1998 EEN12220:1998 BSI 05-1999 2 Foreword This European Standard has been prepared by T
14、echnical Committee CEN/TC156, Ventilation for buildings, the secretariat of which is held by BSI. This standard is one of a series of standards for ductwork used for ventilation and air conditioning of buildings for human occupancy. The position of this standard in the field of the mechanical buildi
15、ng services is shown in Figure 1. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October1998, and conflicting national standards shall be withdrawn at the latest by October1998. According to the
16、CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Swed
17、en, Switzerland and theUnitedKingdom. Contents Page Foreword 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions and symbols 3 4 Dimensions 3 Annex A (informative) Examplesofthickness,breadth andmaterialsofflanges 5 Annex B (informative) Examples of different constructions of flanges 5
18、 Figure 1 Position of EN12220 inthefieldofmechanical building services 2 Figure 2 Circular flange 3 Figure B.1 5 Table 1 Circular flanges dimensions 4 Table A.1 Examples of dimensions of flanges 5 Figure 1 Position of EN12220 in the field of mechanical building services BSI 05-1999 3 EN12220:1998 In
19、troduction This standard has been prepared by CEN/TC156 to specify dimensions and tolerances for circular flanges used in ventilation systems. It should be noted that circular ducts are normally joined without flanges. The purpose of this standard is intended to ensure uniformity of connections betw
20、een circular ducts and items of equipment, e.g.sound attenuators, filters, etc. 1 Scope This European Standard specifies dimensional characteristics of circular flanges for sheet metal ductwork. It applies to ductwork used in ventilating and air conditioning systems in buildings subject to human occ
21、upancy. For flange dimensions of industrial fans seeISO6580 and ISO13351. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are
22、listed hereafter. For dated references the subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN1506, Ventilation f
23、or buildings Sheet metal air ducts and fittings with circular cross section Dimensions. ISO6580, General purpose industrial fans Circular flanges Dimensions. ISO13351, Industrial fans Dimensions. CR12792, Ventilation for buildings Symbols and terminology. 3 Definitions and symbols For the purposes o
24、f this standard, the definitions given in CR12792 together with the following apply: 3.1 nominal diameter, d the reference dimension in mm used for designation, calculation and application of flanges 3.2 deviation the difference between the upper or lower limit of the size and the corresponding nomi
25、nal size 4 Dimensions Flange dimensions are shown in Figure 2. The flange construction shown in Figure 2 is an example, other constructions are possible. NOTEFor b and t see Table A.1. Figure 2 Circular flangeEN12220:1998 4 BSI 05-1999 Table 1 Circular flanges dimensions NOTEIt is intended that addi
26、tional sizes, which are used in some countries, should be phased out and may be removed from a future edition of the standard. Nominal diameter d mm d 2 amm Deviations mm Pitch circle diameter, d 3 0,5 mm Hole diameter, d 4 0,5 mm Number of holes Bolt 80 82 112 9,5 4 M8 100 102 132 125 127 157 150 b
27、 152 182 9,5 6 M8 160 162 192 200 203 233 250 253 283 300 b 303 337 9,5 8 M8 315 318 352 355 b 358 392 400 404 438 450 b 454 488 500 504 538 560 b 564 600 9,5 12 M8 630 634 670 710 b 714 750 800 804 840 16 900 b 904 940 1000 1005 1041 1120 b 1125 1169 9,5 24 M8 1250 1255 1299 a The inside diameter d
28、 2of the flanges is based on spiral wound ducts. For other types of ducts the dimension d 2can be different. b Additional sizes. + 1 0 + 1,5 0 + 1,5 0 + 2 0 + 2 0 BSI 05-1999 5 EN12220:1998 Annex A (informative) Examples of thickness, breadth and materials of flanges Table A.1 Examples of dimensions
29、 of flanges The flanges are normally galvanized, but other types of surface treatment are possible. Annex B (informative) Examples of different constructions of flanges Nominal diameter d mm bt a mm 80 100 125 25 3 150 b160 200 250 25 4 300 b315 355 b 400 450 b 500 30 4 560 b 630 710 b 800 900 b 100
30、0 35 4 1120 b1250 40 5 a The dimensions b and t are here specified for steel Fe360 B or similar qualities and for the construction shown in Figure 2. If other constructions or materials are used, the dimensions can be different. b Additional sizes. Figure B.1 BSEN 12220:1998 BSI 389 Chiswick High Ro
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