1、BS EN 736-2:2016Valves TerminologyPart 2: Definition of components of valvesBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 736-2:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 736-2:2016. Itsupersedes BS EN 736-2:199
2、7 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PSE/18/1, Industrial valves, steam traps, actuators andsafety devices against excessive pressure - Valves - Basic standards.A list of organizations represented on this committee can beobtained on request
3、 to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 89951 5ICS 01.040.23; 23.060.01Compliance with a Br
4、itish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2016.Amendments issued since publicationDate Text affectedBS EN 736-2:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 7
5、36-2 February 2016 ICS 01.040.23; 23.060.01 Supersedes EN 736-2:1997English Version Valves - Terminology - Part 2: Definition of components of valves Appareils de robinetterie - Terminologie - Partie 2: Dfinition des composants des appareils de robinetterie Armaturen - Terminologie - Teil 2: Definit
6、ion der Armaturenteile This European Standard was approved by CEN on 15 December 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists
7、 and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under t
8、he responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugo
9、slav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN
10、 DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 736-2:2016 EBS EN 736-2:2016EN 736-2:2016 (E) 2 Contents Page Eu
11、ropean foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 Annex A (informative) Glossary . 14 Bibliography . 18 BS EN 736-2:2016EN 736-2:2016 (E) 3 European foreword This document (EN 736-2:2016) has been prepared by Technical Committee CEN/TC 69 “Industrial v
12、alves”, 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 August 2016, and conflicting national standards shall be withdrawn at the latest by August 2016.
13、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. This document supersedes EN 736-2:1997. The main changes compared to the previous edit
14、ion are: a) Clause 3 “Terms and definitions” has been updated; b) Annex A has been updated. EN 736 comprises three parts: Part 1: Definition of types of valves Part 2: Definition of components of valves Part 3: Definition of terms According to the CEN-CENELEC Internal Regulations, the national stand
15、ards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lu
16、xembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 736-2:2016EN 736-2:2016 (E) 4 Introduction This is the first step in harmonizing the valve terminology in Europe. It is possible that other names of c
17、omponents or other definitions will be found in other European Standards. Experts establishing European Standards are asked to use the name of components and the definitions given in this European Standard. If other names of components or definitions are needed or already published in European Stand
18、ards please contact the CEN/TC 69 Secretariat for adding or harmonizing the names of components and their definitions in these European Standards. BS EN 736-2:2016EN 736-2:2016 (E) 5 1 Scope This European Standard specifies the names of components of valves and their definitions. It has the purpose
19、to provide a uniform terminology for all components of valves. This European Standard covers components common to more than one type of valve. Names of components and definitions specific to one type of valve will be found in the relevant product or performance standard. 2 Normative references Not a
20、pplicable. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 shell pressure containing envelope of the valve Note 1 to entry: It normally comprises the body and when included in the design a bonnet or cover and the body bonnet or body cover joi
21、nt excluding sealing parts. 3.1.1 body main component of the valve which provides the fluid flow passageways and the body ends 3.1.1.1 straight pattern body body having two body end ports and where the axis of the bonnet or cover is parallel to the faces of the body end ports 3.1.1.2 angle pattern b
22、ody body having two body end ports and where the faces are at right angles 3.1.1.3 oblique pattern body body having two body end ports and where the axis of the bonnet or cover is not parallel to the faces of the body end ports 3.1.1.4 double flanged body body having two flanged body ends for connec
23、ting to corresponding flanges 3.1.1.5 single flanged body body with a single flange not being a body end flange, designed to be installed by bolting to adjacent pipe flange(s) Note 1 to entry: It can be suitable to close the end of the pipe line allowing dismantling of the downstream pipe line. BS E
24、N 736-2:2016EN 736-2:2016 (E) 6 3.1.1.6 lug type body body designed with threaded or unthreaded holes for bolting to the adjacent flange(s) of the pipeline 3.1.1.7 wafer type body body designed to be installed by clamping between flanges 3.1.1.8 multi end body body with more than two body end ports
25、3.1.1.9 body end part of the body provided with the means of connection to the piping component (excluding by-pass if fitted) 3.1.1.10 flanged end body end provided with a flange for mating with a corresponding flange 3.1.1.11 welding end body end prepared for welding to a corresponding end of a com
26、ponent, which can be of the butt welding or socket welding type 3.1.1.12 butt welding end body end prepared for welding to a component by abutting the ends and welding within the groove formed between the prepared ends 3.1.1.13 socket welding end body end prepared for insertion of a component end in
27、to the socket and joining and sealing by fillet welding 3.1.1.14 threaded end body end provided with internal or external thread for mating with a corresponding threaded component 3.1.1.15 socket end body end prepared for connection to a spigot end 3.1.1.16 spigot end body end prepared for insertion
28、 in a socket 3.1.1.17 capillary end body end prepared for connection to a tube by soldering or brazing BS EN 736-2:2016EN 736-2:2016 (E) 7 3.1.1.18 compression end body end prepared for connection to a tube by the compression of a ring or sleeve on to the outside surface of a tube by a tubing nut 3.
29、1.1.19 body end port fluid flow opening in the body end 3.1.1.20 body bonnet/cover flange flange on a body to which the bonnet or cover is bolted 3.1.1.21 body bonnet/cover thread thread on the body into or onto which the bonnet or cover is screwed 3.1.1.22 boss raised area on the surface of a compo
30、nent 3.1.1.23 shell tapping threaded hole in the wall of the shell 3.1.1.24 by-pass piping loop provided to permit fluid flow from one side to the other side of the main valve obturator in its closed position 3.1.2 bonnet component of the shell which closes an opening in the body and contains an ope
31、ning for the passage of the operating mechanism 3.1.2.1 cover component of the shell which provides a closure for an opening in the body 3.1.2.2 bolted bonnet bonnet connected to a body by bolting 3.1.2.3 bolted cover cover connected to a body by bolting 3.1.2.4 screwed bonnet bonnet which is screwe
32、d into or onto the body 3.1.2.5 screwed cover cover which is screwed into or onto the body BS EN 736-2:2016EN 736-2:2016 (E) 8 3.1.2.6 welded bonnet bonnet connected to the body by a weld which provides mechanical attachment and sealing 3.1.2.7 welded cover cover connected to the body by a weld whic
33、h provides mechanical attachment and sealing 3.1.2.8 union bonnet bonnet connected to a body by means of a union nut 3.1.2.9 union cover cover connected to a body by means of a union nut 3.1.2.10 pressure sealed bonnet bonnet connected to the body using a pressure seal joint 3.1.2.11 pressure sealed
34、 cover cover connected to the body using a pressure seal joint 3.1.2.12 clamp ring ring which connects two components by means of clamping 3.1.3 body bonnet/cover joint connection of the valve body to the bonnet or the cover 3.1.3.1 bonnet flange flange on the bonnet by which the bonnet is bolted to
35、 the body 3.1.3.2 cover flange flange on the cover by which the cover is bolted to the body 3.1.3.3 bonnet thread thread on the bonnet by which the bonnet is screwed into or onto the body 3.1.3.4 cover thread thread on the cover by which the cover is screwed into or onto the body 3.1.3.5 bonnet bolt
36、ing bolting which connects the bonnet to the body BS EN 736-2:2016EN 736-2:2016 (E) 9 3.1.3.6 cover bolting bolting which connects the cover to the body 3.1.3.7 union nut threaded ring which connects the union bonnet or cover to the body 3.1.3.8 body bonnet cover gasket gasket which seals the body b
37、onnet/cover joint Note 1 to entry: The gasket can be made in different shapes and of different materials. 3.1.3.9 pressure seal joint body bonnet/cover joint in which the internal fluid pressure increases the compressive loading on the bonnet/cover gasket or pressure seal ring 3.1.3.10 pressure seal
38、 ring ring which acts as the sealing component in a pressure seal joint 3.1.3.11 seal weld weld which provides a seal between two parts, for example body and bonnet/cover 3.2 trim functional components of a valve excluding the shell components which are in contact with the fluid inside the valve Not
39、e 1 to entry: The components are specified in the relevant product standards. 3.2.1 obturator movable component of the valve whose position in the fluid flow path permits, restricts or obstructs the fluid flow Note 1 to entry: The term “disc” has been commonly used in the English language. 3.2.2 ope
40、rating mechanism mechanism which translates the motion of the operating device to the motion of the obturator 3.2.2.1 stem component extending through the shell which transmits the motion from the operating device to the obturator which has a linear motion 3.2.2.2 rising stem stem which has linear m
41、otion during the obturator travel BS EN 736-2:2016EN 736-2:2016 (E) 10 3.2.2.3 non rising stem stem which has no linear motion during the obturator travel 3.2.2.4 inside screw operating thread of the stem which is in contact with the fluid inside the valve 3.2.2.5 outside screw operating thread of t
42、he stem which is not in contact with the fluid inside the valve 3.2.2.6 stem nut component of the operating mechanism mounted on the obturator which together with the thread of the stem converts rotary motion into linear motion 3.2.2.7 yoke bushing fixed component of the operating mechanism mounted
43、on the yoke which together with the thread of the stem converts rotary motion into linear motion 3.2.2.8 yoke sleeve rotating component of the operating mechanism mounted on the yoke which together with the thread of the stem converts rotary motion into linear motion 3.2.2.9 yoke component of a valv
44、e which supports the yoke sleeve, yoke bushing or the actuator, and which can be a separate component or an integral part of the bonnet or actuator 3.2.2.10 bonnet bushing component in a bonnet which serves as a stem guide and can also provide a back seat seating surface 3.2.2.11 shaft component ext
45、ending through the shell which transmits the motion from the operating device to the obturator which has a rotary motion 3.2.3 seating components associated with the seating surfaces 3.2.3.1 seating surface contacting surfaces of the obturator seat and the body seat which effect valve closure 3.2.3.
46、2 body seat part of the body which provides the body seating surface and which can be an integral or a separate component BS EN 736-2:2016EN 736-2:2016 (E) 11 3.2.3.3 obturator seat part of the obturator which provides the obturator seating surface and which can be an integral or a separate componen
47、t 3.2.3.4 seat ring separate component which provides the seating surface Note 1 to entry: See body seat ring and obturator seat ring. 3.2.3.5 body seat ring separate component assembled in the body which provides a body seating surface 3.2.3.6 obturator seat ring separate component assembled to the
48、 obturator which provides an obturator seating surface 3.2.3.7 hard facing deposit of molten metallic material intended to provide wear resistance to the seating surfaces or other components 3.2.3.8 soft seat part made of soft material which provides the seating surface Note 1 to entry: Examples of
49、soft materials are PTFE, rubber etc. 3.2.3.9 liner replaceable component made of plastomer and/or elastomer designed to protect the shell from the fluid and incorporating the body seat 3.2.3.10 lining non-replaceable part made of plastomer and/or elastomer, designed to protect a component from the fluid 3.3 operating mechanism sealing components associated with the seal of the passage of the operating mechanism through the shell 3.3.1 packing chamber chamber of the shell provided to contain the packing 3.3.2 packing component made of deformable material which provides the
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