《DD-ISO-TS-3669-2-2007.pdf》由会员分享,可在线阅读,更多相关《DD-ISO-TS-3669-2-2007.pdf(14页珍藏版)》请在三一文库上搜索。
1、DRAFT FOR DEVELOPMENT DD ISO/TS 3669-2:2007 Vacuum technology Bakable flanges Part 2: Dimensions of knife-edge flanges ICS 23.160 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 10
2、/20/2008 01:24:40 MDTNo reproduction or networking permitted without license from IHS -,-,- DD ISO/TS 3669-2:2007 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee BSI 2008 ISBN 978 0 580 57528 0 National foreword This Draft for Development i
3、s the UK implementation of ISO/TS 3669-2:2007. This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature. It should be applied on this provisional basis, so that information and experience of it
4、s practical application can be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the international organization responsible for its conversion to an international standard. A review of this publication will be initiated not l
5、ater than three years after its publication by the international organization so that a decision can be taken on its status. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards. According to the replies received by the end of th
6、e review period, the responsible BSI Committee will decide whether to support the conversion into an international Standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent to the Secretary of the responsible BSI Technical Committee at British Standards H
7、ouse, 389 Chiswick High Road, London W4 4AL. The UK participation in its preparation was entrusted by Technical Committee MCE/8, Compressors, pneumatic tools, pneumatic machines and vacuum technology, to Panel MCE/8/-/4, Vacuum technology. A list of organizations represented on this committee can be
8、 obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Amendments/corrigenda issued since publication DateComments on 30 May 2008 Copyright British Standards Institution Provid
9、ed by IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 10/20/2008 01:24:40 MDTNo reproduction or networking permitted without license from IHS -,-,- Reference number ISO/TS 3669-2:2007(E) TECHNICAL SPECIFICATION ISO/TS 3669-2 First edi
10、tion 2007-09-01 Vacuum technology Bakable flanges Part 2: Dimensions of knife-edge flanges Technique du vide Brides tuvables Partie 2: Dimensions des brides guillotine DD ISO/TS 3669-2:2007 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=IH
11、S Employees/1111111001, User=Japan, IHS Not for Resale, 10/20/2008 01:24:40 MDTNo reproduction or networking permitted without license from IHS -,-,- ii Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Japan, I
12、HS Not for Resale, 10/20/2008 01:24:40 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Stand
13、ards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also ta
14、ke part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees i
15、s to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. In other circumstances, particularl
16、y when there is an urgent market requirement for such documents, a technical committee may decide to publish other types of normative document: an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication
17、if it is approved by more than 50 % of the members of the parent committee casting a vote; an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a v
18、ote. An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must
19、 either be transformed into an International Standard or be withdrawn. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO/TS 3669-2 was prepared by
20、Technical Committee ISO/TC 112, Vacuum technology. ISO 3669 consists of the following parts, under the general title Vacuum technology Bakable flanges: Dimensions Part 2: Dimensions of knife-edge flanges Technical Specification DD ISO/TS 3669-2:2007 Copyright British Standards Institution Provided b
21、y IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 10/20/2008 01:24:40 MDTNo reproduction or networking permitted without license from IHS -,-,- iv Introduction This Technical Specification contains significant technical changes from I
22、SO 3669:1986, which defined two series of bakable flanges: a preferred series, the main dimensions of which ensure compatibility with already standardized non- bakable flanges (see ISO 1609); a secondary series corresponding to flanges in common use. This part of ISO 3669 specifies only one series a
23、nd is no longer dependent on the preferred number. Effectively, the preferred series has been made obsolete, thereby promoting the secondary series into being the one and only set of specified dimensions. Furthermore, several dimensions in what was formerly the secondary series have been modified to
24、 correspond to flanges in common use. Finally, detailed dimensions for the knife-edge sealing profile have been incorporated. DD ISO/TS 3669-2:2007 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Japan, IHS No
25、t for Resale, 10/20/2008 01:24:40 MDTNo reproduction or networking permitted without license from IHS -,-,- 1 Vacuum technology Bakable flanges Part 2: Dimensions of knife-edge flanges 1 Scope This part of ISO 3669 specifies the dimensions of fixed or rotatable bolted knife-edge style bakable flange
26、s used in vacuum systems for pressures ranging from atmospheric to as low as 1013 Pa. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 knife-edge style flange metal sealed flange used for high and ultra-high vacuum service NOTE 1 The sandwichi
27、ng of one metal gasket between two knife-edge flanges and securely bolting these together makes a vacuum-tight joint. The seal is made when the conical knife edge profile of the flange cuts into the flat surface of a metal gasket. NOTE 2 Originally developed as Conflat1) flanges. The widespread and
28、continued use of knife-edge flanges has made these a de facto international standard, codified by this Technical Specification. 2.2 nominal bore value intended to both identify the flange and specify the largest practical size of tubing that can be accommodated by the flange NOTE See Table 1, in whi
29、ch the convention of identifying original flanges by the outside diameter of the flange (historically in inches) has been maintained. 2.3 leak check groove groove machined into the seal side of the flange to facilitate the free passage of search gas from the outer perimeter of the flange to the seal
30、 zone near the metal gasket 1) Conflat is the trade name of a product supplied by Varian Corporation. This information is given for the convenience of users of this Technical Specification and does not constitute an endorsement by ISO of the product named. Equivalent products may be used if they can
31、 be shown to lead to the same results. DD ISO/TS 3669-2:2007 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 10/20/2008 01:24:40 MDTNo reproduction or networking permitted without li
32、cense from IHS -,-,- 2 3 Symbols Symbol Description Unit l1 nominal outside diameter of flange mm (in) l2 max. tube mm (in) l3 bolt hole mm (in) l4 bolt circle mm (in) position tolerance of bolt hole centre mm l5 seal recess mm (in) l6 knife edge mm (in) l7 thickness of inner rotatable ring mm (in)
33、l8 depth of pipe connection mm (in) l9 flange thickness mm (in) l11 outside diameter of metal gasket mm (in) 4 Requirements 4.1 Materials 4.1.1 Flange The selection of the material shall be compatible with the requirements for the flanges. Considerations may include service temperature, sealing capa
34、city, corrosion resistance, magnetic permeability, type of seal gasket used and dimensions. NOTE Austenitic stainless steel is commonly used, but it is not the intent of this part of ISO 3669 to specify or limit the choice of flange material to austenitic stainless steel. 4.1.2 Bolt holes The flange
35、 may have either clearance or tapped bolt holes. NOTE As a number of flanges in use currently originated in the United States, the tapped flanges often have English tapped holes. Of increasing use are flanges with metric threads. Both are presented in this part of ISO 3669 (see Table 1). 4.1.3 Groov
36、es Leak check grooves should be used. The grooves shall be arranged equidistantly between the bolt holes. 4.1.4 Gasket In general, the gasket should be softer than the flange to avoid dulling of flange knife edge. NOTE Oxygen-free high conductivity (OFHC) copper is commonly used, but it is not the i
37、ntent of this part of ISO 3669 to specify or limit the choice of gasket material to OFHC copper. DD ISO/TS 3669-2:2007 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 10/20/2008 01:2
38、4:40 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 4.2 Dimensions Flange dimensions are shown and specified in Figures 1 to 3 and in Table 1 and Table 2. See Figure 4 for the recommended dimensions of leak check grooves. a) Rotatable flange b) Non-rotatable flange Figur
39、e 1 Basic flange dimensions DD ISO/TS 3669-2:2007 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 10/20/2008 01:24:40 MDTNo reproduction or networking permitted without license from
40、IHS -,-,- 4 Dimensions in millimetres Figure 2 Knife-edge detail Figure 3 Metal gasket a Recommendation: leak check groove equidistant ( 0,15 mm) between bolt holes. b Non-rotatable flange. c Rotatable flange. Figure 4 Recommended dimensions for leak check grooves DD ISO/TS 3669-2:2007 Copyright Bri
41、tish Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 10/20/2008 01:24:40 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 Table 1 Flange dimensions l1 l2 l3 l4 l5 l6 l7 l8 l
42、9 Bolt hole Seal recess Knife edge Thickness of inner rotatable ring Depth of pipe connection Flange thickness Nominal outside diameter Max. tube a No. bolts b Tol. 0,2 0 + Bolt circle Position tolerance of bolt hole centre Tol. 0,2 0 + Tol. 0,1 min Tol. 0,1 min Nominal bore mm (in) mm mm Bolt threa
43、d c mm mm mm mm mm mm mm 10CF 25,0 (1,0) 12,0 6 3,3 M3 0,5 17,50 0,1 13,50 10,50 3,00 6,0 16CF 33,8 (1,33) 19,4 6 4,4 M4 0,7 (#8-32) 27,00 0,1 21,40 18,30 3,30 5,90 7,0 25CF 54,0 (2,12) 25,8 4 6,8 M6 1,0 (1/4“-28) 41,30 0,2 33,00 27,70 4,30 6,00 11,5 40CF 69,9 (2,75) 40,0 6 6,8 M6 1,0 (1/4“-28) 58,7
44、0 0,2 48,30 41,90 4,30 7,70 12,5 50CF 85,7 (3,38) 51,0 8 8,4 M8 1,25 (5/16“-24) 72,40 0,2 61,80 55,90 4,90 9,70 16,0 63CF 114,3 (4,50) 70,0 8 8,4 M8 1,25 (5/16“-24) 92,20 0,2 82,50 77,20 6,40 12,70 17,0 75CF 117,4 (4,62) 76,2 10 8,4 M8 1,25 (5/16“-24) 102,30 0,2 91,60 85,20 6,50 13,00 17,5 100CF 152
45、,4 (6,00) 108,0 16 8,4 M8 1,25 (5/16“-24) 130,30 0,2 120,60115,307,20 14,30 19,5 125CF 171,5 (6,75) 127,0 18 8,4 M8 1,25 (5/16“-24) 151,60 0,2 141,80136,307,20 14,30 21,0 160CF 203,2 (8,00) 159,0 20 8,4 M8 1,25 (5/16“-24) 181,00 0,2 171,40166,108,00 15,90 21,0 200CF 254,0 (10,00) 205,0 24 8,4 M8 1,2
46、5 (5/16“-24) 231,80 0,2 222,20216,908,60 17,20 24,0 250CF 304,8 (12,00) 256,0 32 8,4 M8 1,25 (5/16“-24) 284,00 0,2 273,10267,509,00 18,00 24,0 275CF 336,6 (13,25) 273,4 30 10,8 M10 1,5 (3/8“-24) 306,30 0,2 294,40288,209,90 19,80 28,0 300CF 368,3 (14,5) 306,0 32 10,8 M10 1,5 (3/8“-24) 338,10 0,2 326,
47、40320,009,90 19,80 28,0 350CF 419,1 (16,5) 356,0 36 10,8 M10 1,5 (3/8“-24) 388,90 0,4 376,70373,0010,40 20,70 28,0 400CF 469,9 (16,5) 406,0 40 10,8 M10 1,5 (3/8“-24) 437,90 0,4 424,40419,0010,40 20,70 28,0 a Given for guidance only and corresponding to commonly used austenitic stainless steel flanges. b Number of bolts equispaced on bolt circle. c Metric tap (English tap), according to ISO 965-1. DD ISO/TS 3669-2:2007 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=IHS Employees/1111111001, User=Jap
链接地址:https://www.31doc.com/p-3753161.html