1、BRITISH STANDARD BS ISO 14617-8:2002 Graphical symbols for diagrams Part 8: Valves and dampers ICS 01.080.30; 23.060.01 BS ISO 14617-8:2002 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2004 BSI 31 August 2004 ISBN 0 580 44377 9 N
2、ational foreword This British Standard reproduces verbatim ISO 14617-8:2002 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee TDW/4, Technical product specification, which has the responsibility to: A list of organizations rep
3、resented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by us
4、ing the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity
5、from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in t
6、he UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 23 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication
7、Amd. No. Date Comments Reference number ISO 14617-8:2002(E)INTERNATIONAL STANDARD ISO 14617-8 First edition 2002-09-01 Corrected version 2003-12-01 Graphical symbols for diagrams Part 8: Valves and dampers Symboles graphiques pour schmas Partie 8: Appareils de robinetterie et registres BSISO146178:2
8、002ii BSISO146178:2002IS-71641 O8:(2002E) iiiContents Page Foreword iv Introduction. v 1 Scope 1 2 Normative references 1 3 Terms and definitions. 1 4 General-purpose valves 3 5 Dampers . 9 6 Valves for fluid power systems . 10 7 Hygienic valves . 20 8 Valves with special functions 21 Bibliography 2
9、3 BSISO146178:2002IS-71641 O8:(2002E) iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member b
10、ody 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 take part in the work. ISO collaborates closely with the International Electro
11、technical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted
12、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. Attention is drawn to the possibility that some of the elements of this part of ISO 14617 may be the subject of
13、 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14617-8 was prepared by Technical Committee ISO/TC 10, Technical product documentation, Subcommittee SC 10, Process plant documentation and tpd-symbols. ISO 14617 consists of the following parts, und
14、er the general title Graphical symbols for diagrams: Part 1: General information and indexes Part 2: Symbols having general application Part 3: Connections and related devices Part 4: Actuators and related devices Part 5: Measurement and control devices Part 6: Measurement and control functions Part
15、 7: Basic mechanical components Part 8: Valves and dampers Part 9: Pumps, compressors and fans Part 10: Fluid power converters Part 11: Devices for heat transfer and heat engines Part 12: Devices for separating, purification and mixing Part 15: Installation diagrams and network maps Other parts are
16、under preparation. This corrected version of ISO 14617-8:2002 incorporates the correction of the drawing in Application example X2165. BSISO146178:2002IS-71641 O8:(2002E) vIntroduction The purpose of ISO 14617 in its final form is the creation of a library of harmonized graphical symbols for diagram
17、s used in technical applications. This work has been, and will be, performed in close cooperation between ISO and IEC. The ultimate result is intended to be published as a standard common to ISO and IEC, which their technical committees responsible for specific application fields can use in preparin
18、g International Standards and manuals. BSISO146178:2002BSISO146178:2002INTERNATIONAL STANDARD ISO 14617-8:2002(E)1Graphical symbols for diagrams Part 8: Valves and dampers 1 Scope This part of ISO 14617 specifies graphical symbols for valves and dampers in diagrams, including symbols for general-pur
19、pose valves, those used in fluid power systems and hygienic valves used in the food and pharmaceutical industries. For the fundamental rules of creation and application of graphical symbols in diagrams, see ISO 81714-1. For an overview of ISO 14617, information on the creation and use of registratio
20、n numbers for identifying graphical symbols used in diagrams, rules for the presentation and application of these symbols, and examples of their use and application, see ISO 14617-1. 2 Normative references The following normative documents contain provisions which, through reference in this text, co
21、nstitute provisions of this part of ISO 14617. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 14617 are encouraged to investigate the possibility of applying the most recent editions of
22、 the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 14617-1:2002, Graphical symbols for diagrams Part 1: General information and i
23、ndexes ISO 14617-2:2002, Graphical symbols for diagrams Part 2: Symbols having general application ISO 14617-4:2002, Graphical symbols for diagrams Part 4: Actuators and related devices ISO 81714-1:1999, Design of graphical symbols for use in the technical documentation of products Part 1: Basic rul
24、es 3 Terms and definitions For the purposes of this part of ISO 14617, the following terms and definitions apply. NOTE The list has been restricted to terms whose meaning is not obvious and which have not been defined elsewhere in an International Standard, or which have been defined in various ways
25、 in different standards. In preparing these definitions, ISO and IEC standards on terminology have been consulted; see the references in parentheses. However, most of the definitions in those standards were prepared by different technical committees within a restricted scope. This means that many te
26、rms so defined have to be given more general or neutral definitions when applied in the context of graphical symbols. BSISO146178:2002IS-71641 O8:(2002E) 2 3.1 safety valve valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharges a certified
27、quantity of the fluid so as to prevent a predetermined safe pressure being exceeded, and which is designed to reclose and prevent the further flow of fluid after normal pressure conditions of service have been restored ISO 4126-1 3.2 vacuum valve valve which automatically and without the assistance
28、of any energy other than that of the gas concerned, admits gas to a pipeline or tank in order to prevent a predetermined safe underpressure being exceeded 3.3 control valve power-operated valve in an industrial-process control system for changing the flow rate of the process fluid IEC 60050-351 3.4
29、restrictor device which restricts the flow of a fluid thereby creating a pressure drop ISO 5598 3.5 restrictor valve valve in which the inlet and outlet ports are interconnected through a restricted passageway NOTE In a fixed restrictor valve, the cross-sectional area cannot be altered; in an adjust
30、able restrictor valve, the cross- sectional area can be adjusted. 3.6 release valve valve through which non-desired air or steam in a pipe system may be released 3.7 pressure-reducing valve pressure regulator valve in which, with varying inlet pressure or outlet flow, the outlet pressure remains sub
31、stantially constant, but in which the inlet pressure remains higher than the selected outlet pressure 3.8 pressure-relief valve valve which limits maximum pressure by exhausting fluid when the required pressure is reached 3.9 exhaust valve valve in which the outlet is automatically opened to exhaust
32、 when the air pressure falls at the inlet BSISO146178:2002IS-71641 O8:(2002E) 34 General-purpose valves 4.1 Symbols of a basic nature NOTE For general application rules, see R2101 (4.2.1). 4.1.1 2101 Two-way valve See R2102 (4.2.2). 4.1.2 2102 Angled two-way valve See R2103 (4.2.3). 4.1.3 2103 Three
33、-way valve 4.1.4 2104 Four-way valve 4.2 Application rules for the symbols in 4.1 4.2.1 R2101 Symbols for actuators and devices for delaying, automatic return, detaining, latching and blocking shall be chosen from ISO 14617-4. The imaginary direction of movement of the link between the symbol for a
34、valve and that of the actuator or actuating function shall be towards the valve: valve closing, and from the valve: valve opening, independent of construction. 4.2.2 R2102 The symbol may be used as a symbol for a two-way valve in general or, in those installation diagrams where it is necessary to in
35、dicate whether a valve is straight or angled, as a symbol for a straight valve. 4.2.3 R2103 The symbol shall be used only when it is necessary to indicate the angled construction, for example, in certain installation diagrams. 4.3 Symbols giving supplementary information 4.3.1 Functions 4.3.1.1 2111
36、 Non-return function; check function Flow from left to right possible. 4.3.1.2 2112 Safety function Inlet or internal side to the left. BSISO146178:2002IS-71641 O8:(2002E) 4 4.3.1.3 201 Adjustability See R201 (4.4.1). 4.3.1.4 203 Pre-set adjustability See R201 (4.4.1). 4.3.1.5 171 Change of state wh
37、en characteristic quantity passes set value from below, for example, in a safety valve or a pilot switch See R115 (4.4.2) and R121 (2-4.4.10). 4.3.1.6 172 Change of state when characteristic quantity passes set value from above, for example, in a vacuum valve or pilot switch See R115 (4.4.2) and R12
38、2 (2-4.4.11). 4.3.1.7 2113 L-bore in a three- or four-way valve 4.3.1.8 2114 T-bore in a three- or four-way valve 4.3.1.9 2115 Double L-bore in a four-way valve 4.3.2 Construction NOTE For the use of the symbols, see R2121 (4.4.3). 4.3.2.1 2121 Globe type 4.3.2.2 2122 Ball type 4.3.2.3 2123 Plug typ
39、e 4.3.2.4 2124 Gate type 4.3.2.5 2125 Needle type 4.3.2.6 2126 Disc or butterfly type 4.3.2.7 2127 Piston type; plunger type BSISO146178:2002IS-71641 O8:(2002E) 54.3.2.8 2128 Diaphragm type 4.3.2.9 2129 Hose type 4.3.2.10 2130 Reduced bore 4.3.2.11 2131 Jacket 4.4 Application rules for the symbols i
40、n 4.3 4.4.1 R201 The symbol should cross the centre of the symbol to which it is added. For examples, see X201 (2-5.5.1) to X206 (2-5.5.6), X2131 (4.5.4.1) and X2141 (4.5.5.1). If the symbol consists of an outline in the form of a square, rectangle or circle and a symbol inside indicating the functi
41、on, another location could be more appropriate. For an example, see X207 (2-5.5.7). 4.4.2 R115 The asterisk shall be replaced with the letter symbol for the quantity or else shall be omitted. For examples, see X2121 (4.5.3.1) to X2125 (4.5.3.5). 4.4.3 R2121 The symbols shall be used only when it is
42、necessary to show the construction. 4.5 Application examples 4.5.1 Shut-off valves 4.5.1.1 X2101 403, 654, 725, 2101 Two-way valve with diaphragm actuator, opening when actuated and returning automatically to closed position at cessation of actuation 4.5.1.2 X2102 403, 725, 2103 Three-way valve with
43、 diaphragm actuator 4.5.1.3 X2103 403, 2101, IEC Two-way valve with solenoid actuator BSISO146178:2002IS-71641 O8:(2002E) 6 4.5.1.4 X2104 403, 2101, IEC Two-way valve with electric motor actuator 4.5.1.5 X2105 404, 741, 2104, IEC Four-way valve with actuating device of electric-motor type 4.5.1.6 X2
44、106 403, 405, 565, 681, 2101, 2121 Globe-type two-way valve with quick-release coupling, for example, for fire hydrant 4.5.1.7 X2107 403, 2103, 2113, 2442 Ball-type three-way valve with double-acting fluid cylinder actuator 4.5.2 Non-return valves and check valves 4.5.2.1 X2111 403, 2001, 2101, 2111
45、 Weight-loaded non-return valve 4.5.2.2 X2112 403, 681, 2101, 2111 Combined non-return valve and manually actuated stop valve 4.5.2.3 X2113 2101, 2111, 2121 Globe-type non-return valve; lift-type non-return valve 4.5.2.4 X2114 2101, 2111, 2126 Swing-type non-return valve BSISO146178:2002IS-71641 O8:
46、(2002E) 74.5.2.5 X2115 403, 2002, 2101, 2122 Spring-loaded ball-type non-return valve 4.5.3 Valves with safety function 4.5.3.1 X2121 171, 242, 403, 2101, 2112 Safety valve which opens when pressure p higher than set value 4.5.3.2 X2122 171, 242, 403, 2101, 2112 Pipe break valve which closes when fl
47、ow rate q is higher than set value 4.5.3.3 X2123 171, 242, 403, 681, 741, 2002, 2101, 2112, IEC Quick-acting valve which closes by spring actuator when temperature higher than 125 C, with manual reset The spring is charged by an electric motor. 4.5.3.4 X2124 171, 403, 2002, 2101, 2112, 2121 Globe ty
48、pe spring-loaded safety valve operating when pressure p higher than set value 4.5.3.5 X2125 172, 403, 2002, 2102, 2112, 2121 Angled, globe-type, spring-loaded vacuum valve operating when pressure p lower than set value 4.5.4 Control valves 4.5.4.1 X2131 201, 403, 741, 2101, IEC Control valve with ac
49、tuating device of electric motor type BSISO146178:2002IS-71641 O8:(2002E) 8 4.5.4.2 X2132 201, 403, 405, 725, 2101 Self-operating back-pressure control valve NOTE Flow from left to right is assumed. 4.5.4.3 X2133 201, 403, 405, 725, 2101 Self-operating pressure reducing control valve NOTE Flow from left to right is assumed. 4.5.4.4 X2134 201, 403, 715, 2101 Float-operated control valve 4.5.4.5 X2135 201, 403, 2002, 2101, 21
