1、April 2008DEUTSCHE NORM English price group 8No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 01.040.23; 23.060.01!$NM8
2、“1434221www.din.deDDIN EN 736-3Valves Terminology Part 3: Definition of termsEnglish version of DIN EN 736-3:2008-04Armaturen Terminologie Teil 3: Definition von BegriffenEnglische Fassung DIN EN 736-3:2008-04SupersedesDIN EN 736-3:2002-03www.beuth.deDocument comprises 13 pagesDIN EN 736-3:2008-04 2
3、 National foreword This standard has been prepared by Technical Committee CEN/TC 69 “Industrial valves” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Armaturen (Valves Standards Committee), Technical Committee NA 003-00-10 AA Grundnorme
4、n. DIN EN 736 consists of the following parts, under the general title Valves Terminology: Part 1: Definition of types of valves Part 2: Definition of components of valves Part 3: Definition of terms Amendments This standard differs from DIN EN 736-3:2002-03 as follows: a) Clause 1 “Scope” has been
5、revised. b) The terms in 3.2.10, 3.3.1, 3.3.2, 3.4.5, 3.5.1 to 3.5.3, 3.6.1 and 3.6.2 have been amended or supplemented. Previous editions DIN EN 736-3: 1999-08, 2002-03 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 736-3January 2008ICS 01.040.23; 23.060.01 Supersedes EN 736-3:1999 English Versi
6、onValves - Terminology - Part 3: Definition of termsDfinition des termesArmaturen - Terminologie - Teil 3: Definition von BegriffenThis European Standard was approved by CEN on 14 December 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f
7、or 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 on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official
8、 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 Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgi
9、um, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STA
10、NDARDIZATIONCOMIT 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 means reservedworldwide for CEN national Members.Ref. No. EN 736-3:2008: EAppareils de robinetterie - Terminologie
11、 - Partie 3:EN 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 design .7 3.4 Terms relating to flow characteristics.8 3.5 T
12、erms relating to operation 9 3.6 Terms relating to tests 9 DIN EN 736-3:2008-04 Annex A (informative) Glossary .10 EN 736-3:2008 (E) 3 Foreword This document (EN 736-3:2008) has been prepared by Technical Committee CEN/TC 69 “Industrial valves”, the secretariat of which is held by AFNOR. This Europe
13、an 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 document supersedes EN 736-3:1999. Attention is drawn to the
14、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 national standards organizations of the following countri
15、es 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, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
16、 Sweden, Switzerland and the United Kingdom. DIN EN 736-3:2008-04 EN 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 components. It is possible that other terms and their de
17、finitions 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, please inform the secretariat of CEN/TC 69 so tha
18、t the terms and definitions in these European standards can be included or harmonized. DIN EN 736-3:2008-04 EN 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) used for several types of valves or in several
19、 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 valves, in which case it may be necessary to appl
20、y 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 standard. 2 Normative references The following
21、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 valves Face-to-face and centre-to-face dimen
22、sions 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 selection of PN EN 1759 (all parts), Flanges and
23、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 terminology and general considerations (IEC
24、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 temperature 3.1.1 maximum allowable pressure PS, Ps, p
25、s: 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 DIN EN 736-3:2008-04 EN 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 3.1.7 allowable differential pressure maxi
26、mum 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 centre-to-face dimension CTF see EN 558 3.2.
27、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 DIN EN 736-3:2008-04 EN 736-3:2008 (E) 7 3.2.9 rated travel see EN 60534-1 3.2.10 maximum travel for valves with end stops, the total displacement
28、 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 corresponding to the nominal inside di
29、ameter 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 the passage of a theoretical spher
30、e 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 bore valve valve with a flow section e
31、qual 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 the corresponding product or fitness
32、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 axis of the body ends 3.3.6 anti-sta
33、tic 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 under pressure by disassembly of any ex
34、ternal 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). DIN EN 736-3:2008-04 EN 736-3:2008 (E) 8 3.3.8 coating protective layer applie
35、d 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 60534-1 3.4.3 relative flow coef
36、ficient 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: 22up = (1) where p is the mea
37、sured 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. DIN EN 736-3:2008-04 EN 736-3:2008 (E) 9 3.4.6 cavitation two stage process associated with the flow of liquids: first phase involving
38、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 static pressure rises abo
39、ve 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 3.5.2 strength torque torque
40、 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 point where the operating
41、 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 on one or more valves rep
42、resentative 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 constitute one of the elements
43、 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 DIN EN 736-3:2008-04 EN 736-3:2008 (E) 10 Annex A (informative) Glossary English German French Subclause acceptance test
44、 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 3.3.6 asymmetric val
45、ve 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 clearway valve molchbare Ar
46、matur 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 FAF 3.2.3 flow coef
47、ficient 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 inhrente Durchflussk
48、ennlinie 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 3.2.10 NPS NPS NPS 3.2.2
49、 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 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 relati
