1、12220:1998 Ventilation for buildings - Ductwork - Dimensions of circular flanges for general ventilation I The European Standard EN 122201998 has the status of a British Standard ICs 91.140.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 122201998 Amd. No. Date Nation
2、al foreword Text affected “his British Standard is the English language veision of EN 12220 1998. The UK participation in its preparation was entrusted to Technicd Committee RHE/2, Air distribution and air diffusion, which has the responsibility to: - aid enquirers to understand the text; - present
3、to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed them in the UK. A ist of organizations represented on this committee can be obtained on requ
4、est 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 Standards Catalogue under the section entitied “International Standards Correspondence Index“, or by using the “Find“ facility of t
5、he BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contsact. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Th
6、is British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 August 1998 Q BSI 1998 ISBN O 880 29674 1 STD.BS1 BS EN 12220-ENGL L778 1624669 0737985 696 EUROPEAN wmm NORME EUROPENNE
7、 EuROPmcHE NORM EN 12220 91.140.30 Descriptors: Buildings, Ventilation, air conditioning, aemuiic pipes, metal plates, pipe flanges, dimensions English version Ventilation for buildings - Ductwork - Dimensions of circular fianges for general ventilation Rseau de conduits - Brides circulaires pour ve
8、ntilation gnde - Dimensions Luftung von Gebuden - Luftletungen - MaBe von runden Fianschen fur allgemeine Luftungszweche This European standard was approved by CEN on 13 February 1998. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving
9、thui - c * te?naimlQgy. 3 Definitions and symbols For the purposes of this standard, the definitions given in CR 12792 together with the following apply: 3. I nominal diameter, d the reference dimension in mm used for designation, calculation and application of flanges 3.2 deviation the difference b
10、etween the upper or lower limit of the size and the corresponding nominal size 4 Dimensions Flange dimensions are shown in Figure 2. The fiange constsuction shown in Figure 2 is an example, other constructions are possible. F b 4 -e- I ! I I t I NOTE For b and t see Table Al. Figure 2 - Circular fla
11、nge O BSI 1998 STD-BSI BS EN 12S20-ENGL 1998 1b24bb9 0717988 3T5 Page 4 EN 122m1998 Deviations Pitch circle diameter, 4 f 0,5 Hole diameter, d4 f 0,5 Number of holes mm mm 5602) 630 7102) 800 9002) lo00 11202) 1250 564 +2 600 995 12 670 634 714 750 804 840 16 !XI4 940 1005 1041 1125 +2 1169 . 9,5 24
12、 O 1255 O 1299 able 1 - Circular flanges - dimensions Bolt Nominal diame ter d mm 80 mm 82 mm M8 O 100 102 127 1157 125 1502) 152 +1,5 O I 182 M8 162 203 160 200 250 253 I 283 3002) 303 +1,5 I 337 M8 O 318 315 358 I 392 400 404 454 4502) 500 504 M8 MS I I 1 1 1 ) Additional sizes. NOTE It is intende
13、d that additional sizes, which are used in some countries, should be phased out and may be removed from a future edition of the standard. 0 BSI 1998 - STD.BS1 BS EN 12220-ENGL 1998 1b24bb9 0717989 231 = Page 5 EN 122201998 Annex A (informative) Examples of thickness, breadth and materiah of flanges
14、flanges Annex B (informative) Examples of different constructions of Table A.l- Examples of dimensions of flanges Nominal diameter d mm 80 100 125 1502) 160 200 250 3002) 315 3552) 400 4502) 5602) 500 630 7102) 800 9002) 1000 11202) 1250 mm 25 X 3 25 X 4 30 x 4 35 x 4 40 X 5 ) The dimensions b and t
15、 are here specified for steel Fe 360 B or similar quaiities and for the construction shown in Figure 2. if other constructions or materials are used, the dimensions can be different. 2, Additional sizes. The flanges are nonnay galvanized, but other types of surface treatment are possible. Loose fian
16、ge mounted at the end of a duct Figure B.1 O BSI 1998 BSI 389 Chiswick High Road London w4 4AL - STD-ES1 BS EN 12220-ENGL 1778 - 1624669 0717790 T53 BS EN 12220:1998 BSI - British Standards Institution BSI is the independent national body responsible for preparing British standards. It presents the
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