1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58interfaces for pneumatic actuatorICS 23.160Vacuum technology Right-angle valve Dimensions and BRITI
2、SH STANDARDBS ISO 21358:2007BS ISO 21358:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2007 BSI 2007ISBN 978 0 580 50749 6Amendments issued since publicationAmd. No. Date CommentsThis publication does not purport to include all t
3、he necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. National forewordThis British Standard was published by BSI. It is the UK implementation of ISO 21358:2007.The UK participation i
4、n its preparation was entrusted to Technical Committee MCE/8, Compressors, pneumatic tools, pneumatic machines and vacuum technology.A list of organizations represented on this committee can be obtained on request to its secretary.Reference numberISO 21358:2007(E)INTERNATIONAL STANDARD ISO21358First
5、 edition2007-04-15Vacuum technology Right-angle valve Dimensions and interfaces for pneumatic actuator Technique du vide Vanne dquerre Dimensions et interfaces pour actionneur pneumatique BS ISO 21358:2007ii iiiForeword ISO (the International Organization for Standardization) is a worldwide federati
6、on of national standards bodies (ISO member bodies). The work of preparing International Standards 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
7、. International organizations, 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 of electrotechnical standardization. International Standards are drafted in accordance w
8、ith the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is 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 appr
9、oval by at least 75 % of the member bodies casting a vote. 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 21358 was prepared by Technical Commit
10、tee ISO/TC 112, Vacuum technology. BS ISO 21358:2007iv Introduction There has previously been no International Standard for the mounting dimensions of right-angle valves, in spite of the fact that right-angle valves are frequently incorporated in vacuum systems as part of pipeline fittings in practi
11、cal situations of use. This International Standard was prepared in accordance with the revision of ISO 9803 in which the mounting dimensions of pipeline fittings have been standardized. Interfaces for pneumatic actuators have also been standardized. BS ISO 21358:20071Vacuum technology Right-angle va
12、lve Dimensions and interfaces for pneumatic actuator 1 Scope This International Standard defines dimensions of right-angle valves that are compatible with the mounting dimensions of elbows defined in ISO 9803-1 and ISO 9803-2. This International Standard covers right-angle valves with flanges define
13、d in ISO 2861-1, ISO 1609 and ISO 3669. ISO 3669 lists two flange series: preferred series, and secondary series. This International Standard covers only the valves with flanges of the secondary series. 2 Normative references The following referenced documents are indispensable for the application o
14、f this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1609, Vacuum technology Flange dimensions ISO 2861-1, Vacuum technology Quick-release couplings Dimensions Part 1: Clam
15、ped type ISO 3669, Vacuum technology Bakable flanges Dimensions 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 1609 and ISO 2861-1 apply. 4 Requirements 4.1 Mounting dimensions of the vacuum pipeline fittings shall be as specified in Table 1. See Fi
16、gure 1. 4.2 Flange dimensions shall be as specified in ISO 1609 and ISO 2861-1 and ISO 3669. One or more flanges should be rotatable. BS ISO 21358:20072 5 Interface for pneumatic actuator The input/output for pneumatic actuators and control solenoid for the actuators are as follows: a) minimum pneum
17、atic pressure (for valve open/close): 0,4 MPa; b) maximum pneumatic pressure (in order not to be destroyed): 0,7 MPa; c) thread size and unit (e.g. “mm”, “inch”) of inlet and outlet for the pneumatic actuator should be indicated on the users manual and/or valve body (e.g. “Rc 1/4”, “1/8 NPT”); d) el
18、ectrical specification (or capacity) of contact points for open/close status indication should be indicated (e.g. “d.c. 24 V/2 A, a.c. 250 V/20 mA/50-60 Hz”). Dimensions in millimetres Key e edge dimension Figure 1 Right-angle valve Table 1 Dimensions for valves with non-bakable flanges Dimensions i
19、n millimetres Edge dimension, e Flanges specified in Perpendicularity tolerance for the two flange faces specified inNominal bore Dimensions Tolerance ISO 2861-1 ISO 1609 ISO 2861-1 ISO 1609 10 30 16 40 25 50 not applicable not applicable 40 65 1,5 applicable 2 63 88 100 108 4 a160 138 200 178 250 2
20、08 4 bnot applicable capplicable not applicable c 030 a 1,5 is preferable. b 2 is preferable. cThere are no corresponding flanges in ISO 2861-1 over nominal bore 63. BS ISO 21358:20073Table 2 Dimensions for valves with bakable flanges Dimensions in millimetres Edge dimension, e Nominal bore Dimensio
21、ns Tolerance Perpendicularity tolerance for the two flange faces 16 38 40 63 1 63 105 100 135 1,5 160 167 200 203 2 030 BS ISO 21358:20074 Bibliography 1 ISO 3, Preferred numbers Series of preferred numbers 2 ISO 9803-1, Vacuum technology Mounting dimensions of pipeline fittings Part 1: Non knife-ed
22、ge flange type 3 ISO 9803-2, Vacuum technology Mounting dimensions of pipeline fittings Part 2: Knife-edge flange type BS ISO 21358:2007blankBS ISO BSI389 Chiswick High RoadLondonW4 4AL21358:2007BSI British Standards InstitutionBSI is the independent national body responsible for preparing British S
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