1、BRITISH STANDARDBS EN 736-3:2008Valves Terminology Part 3: Definition of termsICS 01.040.23; 23.060.01g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g
2、58BS EN 736-3:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008ISBN 978 0 580 57802 1National forewordThis British Standard is the UK implementation of EN 736-3:2008. It supersedes BS EN 736-3:1999 which is withdrawn.
3、The UK participation in its preparation was entrusted by Technical Committee PSE/7, Industrial valves, to Subcommittee PSE/7/1, Valves Basic standards.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all th
4、e necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 736-3January 2008ICS
5、01.040.23; 23.060.01 Supersedes EN 736-3:1999 English VersionValves - Terminology - Part 3: Definition of termsAppareils de robinetterie - Terminologie - Partie 3 :Dfinition des termesArmaturen - Terminologie - Teil 3: Definition von BegriffenThis European Standard was approved by CEN on 14 December
6、 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained
7、on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Ce
8、ntre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland
9、, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any me
10、ans reservedworldwide for CEN national Members.Ref. No. EN 736-3:2008: EEN 736-3:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 3.1 Terms relating to pressure and temperature 5 3.2 Terms relating to dimensions.6 3.3 Terms relating to
11、design .7 3.4 Terms relating to flow characteristics.8 3.5 Terms relating to operation 9 3.6 Terms relating to tests 9 Annex A (informative) Glossary .10 BS EN 736-3:2008EN 736-3:2008 (E) 3 Foreword This document (EN 736-3:2008) has been prepared by Technical Committee CEN/TC 69 “Industrial valves”,
12、 the secretariat of which is held by AFNOR. 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 July 2008, and conflicting national standards shall be withdrawn at the latest by July 2008. This docume
13、nt supersedes EN 736-3:1999. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the na
14、tional standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway
15、, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 736-3:2008EN 736-3:2008 (E) 4 Introduction EN 736-3 harmonizes the definitions of terms for valves. EN 736-1 deals with the definitions of types of valves and EN 736-2 with definitions of compon
16、ents. It is possible that other terms and their definitions are found in other European standards. Experts writing European standards are asked to use the terms and definitions given in this European standard. If other terms and definitions are necessary or are published in other European standards,
17、 please inform the secretariat of CEN/TC 69 so that the terms and definitions in these European standards can be included or harmonized. BS EN 736-3:2008EN 736-3:2008 (E) 5 1 Scope This European standard defines the terms and their definitions (or the source if defined in other European standards) u
18、sed for several types of valves or in several fields of application. These terms concern the pressures and temperatures, the dimensions, the design, the flow control characteristics and the test of valves. The terms and definitions in this European standard may also apply to products other than valv
19、es, in which case it may be necessary to apply these definitions analogously. This European standard covers terms common to more than one type of valve. The terms and definitions specific to one type of valve, or to one application are found in the relevant product standard or fitness for purpose st
20、andard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 558, Industrial
21、 valves Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems PN and Class designated valves EN 764-1, Pressure equipment - Part 1: Terminology - Pressure, temperature, volume, nominal size EN 1333, Flanges and their joints Pipework components Definition and sele
22、ction of PN EN 1759 (all parts), Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, Class designated EN 12982, Industrial valves End-to-end and centre-to-end dimensions for butt welding end valves EN 60534-1, Industrial-process control valves Part 1: Control valve
23、 terminology and general considerations (IEC 60534-1:2005) EN ISO 6708, Pipework components Definition and selection of DN (nominal size) (ISO 6708:1995) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 Terms relating to pressure and temperatu
24、re 3.1.1 maximum allowable pressure PS, Ps, ps: see EN 764-1 3.1.2 test pressure Ptest, pt: see EN 764-1 3.1.3 maximum/minimum allowable temperature TS, tS: see EN 764-1 BS EN 736-3:2008EN 736-3:2008 (E) 6 3.1.4 test temperature Ttest, tt: see EN 764-1 3.1.5 PN see EN 1333 3.1.6 Class see EN 1759 3.
25、1.7 allowable differential pressure maximum allowable static differential pressure at a given temperature of a valve when it is in the closed position 3.2 Terms relating to dimensions 3.2.1 DN (nominal size) see EN ISO 6708 3.2.2 NPS see EN 1759 3.2.3 face-to-face dimension FTF see EN 558 3.2.4 cent
26、re-to-face dimension CTF see EN 558 3.2.5 end-to-end dimension ETE see EN 12982 3.2.6 centre-to-end dimension CTE see EN 12982 3.2.7 travel see EN 60534-1 3.2.8 relative travel h see EN 60534-1 BS EN 736-3:2008EN 736-3:2008 (E) 7 3.2.9 rated travel see EN 60534-1 3.2.10 maximum travel for valves wit
27、h end stops, the total displacement of the obturator between these mechanical end stops NOTE The end stops may be in the body, the bonnet or cover, the operating device, etc. 3.3 Terms relating to design 3.3.1 full bore valve valve with a flow section equal to or greater than 80 % of the section cor
28、responding to the nominal inside diameter of the body end port NOTE The nominal inside diameter of the body end port for the particular valve type is specified in the corresponding product or performance standard. 3.3.2 clearway valve valve designed to have an unobstructed flow way, which allows for
29、 the passage of a theoretical sphere with a diameter that is not less than the nominal inside diameter of the body end port NOTE The nominal inside diameter of the body end port for the particular valve type is specified in the corresponding product or fitness for purpose standard. 3.3.3 reduced bor
30、e valve valve with a flow section equal to or greater than 36 % of the section corresponding to the nominal inside diameter of the body end port and which does not correspond to the full bore valve NOTE The nominal inside diameter of the body end port for the particular valve type is specified in th
31、e corresponding product or fitness for purpose standard. 3.3.4 symmetric valve valve with an internal construction which has a plane of symmetry perpendicular to the axis of the body ends 3.3.5 asymmetric valve valve with an internal construction which has no plane of symmetry perpendicular to the a
32、xis of the body ends 3.3.6 anti-static design valve design which ensures electrical continuity between all the components in contact with the fluid and the shell 3.3.7 anti-blow out design valve design which ensures that the shaft or stem cannot be fully blown out of the shell when the valve is unde
33、r pressure by disassembly of any external part or by failure of the connection between obturator and shaft or stem even when external parts are removed NOTE External parts are parts which are not included in the bare shaft valve (bracket, lever, actuator). BS EN 736-3:2008EN 736-3:2008 (E) 8 3.3.8 c
34、oating protective layer applied to a valve component or the valve itself to provide a protection against corrosion and /or to prevent contamination of the fluid by the valve 3.4 Terms relating to flow characteristics 3.4.1 flow coefficient Kv(Cv) see EN 60534-1 3.4.2 rated flow coefficient see EN 60
35、534-1 3.4.3 relative flow coefficient see EN 60534-1 3.4.4 inherent flow characteristic see EN 60534-1 3.4.5 flow resistance coefficient dimensionless coefficient, relevant to turbulent flow in particular in a valve NOTE The value of can be obtained from test results by using the following equation:
36、 22up = (1) where p is the measured static pressure drop across the valve, in Pascal; is the density of the fluid, in kilograms per cubic metre; u is the mean flow velocity in metres per second. BS EN 736-3:2008EN 736-3:2008 (E) 9 3.4.6 cavitation two stage process associated with the flow of liquid
37、s: first phase involving the formation of vapour bubbles in the fluid stream further to the dropping of the static pressure to below the saturation vapour pressure of the liquid; second phase of the process being the implosion of these vapour bubbles which re-condense into the liquid state when the
38、static pressure rises above the saturation vapour pressure of the liquid 3.5 Terms relating to operation 3.5.1 operating torque torque which, applied on the torque application point, allows the entire operating of the valve against conditions specified in the product or fitness for use standards 3.5
39、.2 strength torque torque which, applied on the torque application point, does not generate any deterioration of the functional characteristics due to a permanent deformation of the valve components, when the valve is in the maximal opening or maximal closing position 3.5.3 torque application point
40、point where the operating and strength torques are applied, which is the same for the operating and the strength torque, and is either on a specific point of the operating device, either on the end of the valve shaft or on the yoke sleeve 3.6 Terms relating to tests 3.6.1 type test test carried out
41、on one or more valves representative of the design and the manufacturing process to confirm conformance of the manufactured valves with specified requirements 3.6.2 production test test carried out on components or partially built up valves during the manufacturing process NOTE All these tests const
42、itute one of the elements which allow the manufacturer to ensure the quality of the manufactured valves. 3.6.3 acceptance test test carried out in accordance with the technical specifications of the order BS EN 736-3:2008EN 736-3:2008 (E) 10 Annex A (informative) Glossary English German French Subcl
43、ause acceptance test Anerkennungsprfung essai de rception 3.6.3 allowable differential pressure Zulssiger Differenzdruck pression diffrentielle admissible 3.1.7 anti-blow out design Ausblassichere Ausfhrung conception anti-jection 3.3.7 anti-static design Antistatikausfhrung conception antistatique
44、3.3.6 asymmetric valve asymmetrische Armatur appareil de robinetterie asymtrique 3.3.5 cavitation Kavitation cavitation 3.4.6 centre-to-end dimension CTE Baulnge CTE dimension extrmit-axe CTE 3.2.6 centre-to-face dimension CTF Baulnge CTF dimension face-axe, FAA 3.2.4 Class Class Class 3.1.6 clearwa
45、y valve molchbare Armatur appareil de robinetterie passage continu 3.3.2 coating Beschichtung revtement 3.3.8 DN (nominal size) DN (Nennweite) DN (diamtre nominal) 3.2.1 end-to-end dimension ETE Baulnge ETE dimension entre extrmits ETE 3.2.5 face-to-face dimension FTF Baulnge FTF dimension face-face
46、 FAF 3.2.3 flow coefficient Durchflusskoeffizient coefficient de dbit 3.4.1 flow resistance coefficient Durchflusswiderstandskoeffizient coefficient de rsistance lcoulement 3.4.5 full-bore valve Armatur mit vollem Durchgang appareil de robinetterie passage intgral 3.3.1 inherent flow characteristic
47、inhrente Durchflusskennlinie caractristique intrinsque de dbit 3.4.4 maximum allowable pressure Zulssiger Druck pression maximale admissible 3.1.1 maximum/minimum allowable temperature Zulssige Temperatur temprature maximale/minimale admissible 3.1.3 maximum travel maximaler Hub course maximale 3.2.
48、10 NPS NPS NPS 3.2.2 operating torque Bettigungsmoment couple de manoeuvre 3.5.1 PN PN PN 3.1.5 production test fertigungsbegleitende Prfung essai de production 3.6.2 rated flow coefficient Nenndurchflusskoeffizient coefficient de dbit nominal 3.4.2 rated travel Nennhub course nominale 3.2.9 reduced
49、 bore valve Armatur mit reduziertem Durchgang appareil de robinetterie passage rduit 3.3.3 relative flow coefficient relativer Durchflusskoeffizient coefficient de dbit relatif 3.4.3 relative travel relativer hub course relative 3.2.8 BS EN 736-3:2008EN 736-3:2008 (E) 11 English German French Subclause strength torque Festigkeitsmoment couple de rsistance 3.5.2 symmetric valve symmetrische Armatur appareil de robinetterie symtrique 3.3.4 test pressure Prfdruck pression dessai 3.1.2 tes
