1、BSI Standards PublicationBS EN 16767:2016Industrial valves Steel andcast iron check valvesBS EN 16767:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16767:2016.It supersedes BS EN 14341:2006 and BS EN 12334:2001 which arewithdrawn.The UK participation in i
2、ts preparation was entrusted to TechnicalCommittee PSE/18, Industrial valves, steam traps, actuators andsafety devices against excessive pressure.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the nece
3、ssaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 86697 5ICS 23.060.50Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was
4、published under the authority of theStandards Policy and Strategy Committee on 30 April 2016.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 16767:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16767 April 2016 ICS 23.060.50 Supersedes EN 12334:2001, EN 14341:2006Engli
5、sh Version Industrial valves - Steel and cast iron check valves Robinetterie industrielle - Clapets de non-retour en acier et en fonte Industriearmaturen - Rckflussverhinderer aus Gusseisen und Stahl This European Standard was approved by CEN on 12 February 2016. CEN members are bound to comply with
6、 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 and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Manage
7、ment 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 the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same stat
8、us as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta
9、, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN
10、All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16767:2016 EBS EN 16767:2016EN 16767:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 5 3 Terms and definitions . 6 4 Requirements . 6 4.1 General 6 4.2 Des
11、ign 6 4.2.1 Materials . 6 4.2.2 Pressure/temperature ratings . 7 4.2.3 Dimensions 8 4.2.4 Operation . 8 4.2.5 Auxiliary connections 9 4.2.6 Permanent joining of the steel body 9 4.3 Functional characteristics 9 4.3.1 Shell design strength 9 4.3.2 Flow characteristics 10 4.3.3 Seat leakage 10 4.3.4 A
12、nti-blow out design . 10 5 Test procedures 10 6 Declaration of compliance 10 7 Designation. 10 8 Marking, preparation for storage and transportation . 11 8.1 Marking 11 8.2 Preparation for storage and transportation 12 Annex A (informative) Information to be supplied by the purchaser 13 Annex ZA (in
13、formative) Relationship between this European Standard and the essential requirements of Directive 2014/68/EU (Pressure equipment Directive) aimed to be covered. 14 Bibliography . 15 BS EN 16767:2016EN 16767:2016 (E) 3 European foreword This document (EN 16767:2016) has been prepared by Technical Co
14、mmittee CEN/TC 69 “Industrial valves”, 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 October 2016, and conflicting national standards shall be withdraw
15、n at the latest by October 2016. 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 12334:2001 and EN 14341:2
16、006. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. T
17、he main changes to the previous version of EN 12334:2001 and EN 14341:2006 are the following: combined content from previous version of EN 12334:2001 and EN 14341:2006; materials referenced to EN 12516-1 and/or to EN 12516-4; from EN 12334:2001, removal of informative Annex B “Comparison between EN
18、and ISO cast iron material grades”; from EN 14341:2006, removal of Table 1 “Nominal inside diameter of the body end port” and Table 2 “Sizes of auxiliary connections”; revision of the normative references; the technical content was considerably revised. According to the CEN/CENELEC Internal Regulati
19、ons, the national standards 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
20、, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16767:2016EN 16767:2016 (E) 4 1 Scope This European Standard specifies the requirements for cast iron or steel check valves, wh
21、ich are forged, cast or fabricated in straight, angle or oblique pattern (see EN 736-2) with end connections flanged or wafer, butt welding, socket welding, or threaded. This European Standard applies to check valves mainly used for industrial and general purpose applications. However, they may be u
22、sed for other applications provided the requirements of the relevant performance standards are met. Back flow prevention anti-pollution check valves are outside the scope of this European standard. The range of nominal sizes covered is: DN 8, DN 10; DN 12, DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; D
23、N 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000. DN 8 and DN 12 are not used for PN designated flanged end connections. DN 8, DN 10 and DN 12 are not used for Class designated flanged end connections. DN 75
24、0 is used for Class designated valves only. Socket welding end valves and threaded end valves are limited to the range DN 8 to DN 65. The range of pressure designations covered is: a) for flanged end and wafer type end cast iron bodies: PN 2,5; PN 6; PN 10; PN 16; PN 25; Class 125; Class 250; b) for
25、 flanged end, wafer type and butt welding end steel bodies: PN 40; PN 63; PN 100; Class 150; Class 300; Class 600; c) for socket welding end and threaded end steel bodies: PN 40; PN 63; PN 100; Class 600; Class 800. NOTE Class 800 is a widely used Class designation for socket welding and threaded en
26、d valves. BS EN 16767:2016EN 16767:2016 (E) 5 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition o
27、f the referenced document (including any amendments) applies. EN 19:2016, Industrial valves Marking of metallic valves prEN 558:20151), Industrial valves Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems PN and Class designated valves EN 736-1, Valves Termino
28、logy Part 1: Definition of types of valves EN 736-2, Valves Terminology Part 2: Definition of components of valves EN 736-3, Valves Terminology Part 3: Definition of terms EN 1092-1:2007+A1:2013, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Par
29、t 1: Steel flanges EN 1092-2:1997, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 2: Cast iron flanges EN 1759-1:2004, Flanges and their joint Circular flanges for pipes, valves, fittings and accessories, Class designated Part 1: Steel flang
30、es, NPS 1/2 to 24 EN 10269:2013, Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties EN 12266-1, Industrial valves Testing of metallic valves Part 1: Pressure tests, test procedures and acceptance criteria Mandatory requirements EN 12351, Industrial valve
31、s Protective caps for valves with flanged connections EN 12516-1:2014, Industrial valves Shell design strength Part 1: Tabulation method for steel valve shells EN 12516-2:2014, Industrial valves Shell design strength Part 2: Calculation method for steel valve shells EN 12516-4:2014, Industrial valve
32、s Shell design strength Part 4: Calculation method for valve shells manufactured in metallic materials other than steel EN 12627:1999, Industrial valves Butt welding ends for steel valves prEN 12760:20151), Valves Socket welding ends for steel valves EN 12982:2009, Industrial valves End-to-end and c
33、entre-to-end dimensions for butt welding end valves EN 16722, Industrial valves End-to-end and centre-to-end dimensions for valves with threaded ends 1)Under preparation. BS EN 16767:2016EN 16767:2016 (E) 6 EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Di
34、mensions, tolerances and designation (ISO 228-1) EN ISO 9606-1, Qualification testing of welders Fusion welding Part 1: Steels (ISO 9606-1) EN ISO 14732, Welding personnel Qualification testing of welding operators and weld setters for mechanized and automatic welding of metallic materials (ISO 1473
35、2) EN ISO 15607, Specification and qualification of welding procedures for metallic materials General rules (ISO 15607) ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation ANSI/ASME B1.20.1, Pipe Threads, General Purpose, Inch
36、 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 736-1, EN 736-2 and EN 736-3 apply. NOTE 1 The terms maximum allowable pressure, PS, and test pressure, PT, defined in Directive 2014/68/EU (PED) are equivalent to the terms allowable pressure, ps, and
37、test pressure, pt, defined in EN 7363. NOTE 2 EN 7361 illustrates four basic check valve types: the axial and lift types are based on the globe valve; the swing type is based on the butterfly valve and the diaphragm type is based on the diaphragm valve. Other check valve types are possible and are c
38、onsidered to be within the scope of this European standard. 4 Requirements 4.1 General For information to be supplied by the purchaser see Annex A. 4.2 Design 4.2.1 Materials 4.2.1.1 The body and cover (if any) materials shall be selected from EN 12516-1:2014 and/or EN 12516-4:2014. Bolting (if any)
39、 materials shall be selected from EN 10269:2013. A selection of bolts and nuts for flange connections, which may be used for the body and cover connection, is indicated in EN 1515-4. BS EN 16767:2016EN 16767:2016 (E) 7 4.2.1.2 All the internal parts in contact with the fluid shall be made of a mater
40、ial or coated with a material whose corrosion resistance to the fluid being carried is at least equal to the body and bonnet material. The manufacturer shall declare the materials of construction and any coatings of components in contact with the line fluid from which the suitability of the valve fo
41、r the application can be determined. 4.2.2 Pressure/temperature ratings 4.2.2.1 Steel body The pressure/temperature ratings shall be in accordance with EN 12516-1:2014 for the particular body/bonnet material group. The pressure/temperature ratings applicable to Class 800 socket welding and threaded
42、end valves shall be the Class 600 rating for the applicable material group multiplied by the ratio of 800/600. 4.2.2.2 Cast iron body The pressure/temperature ratings shall be in accordance with EN 12516-4:2014 for the particular body/bonnet material group. 4.2.2.3 Other parts Other parts of the val
43、ve (cover, bolts etc.) shall have such dimensions, so that they fulfil the body rating. 4.2.2.4 Low temperature applications 4.2.2.4.1 Steel check valves For temperatures below the lowest temperature given in the pressure/temperature rating tables of EN 12516-1:2014, the maximum allowable pressure s
44、hall be not greater than the pressure corresponding to the lowest temperature in the rating tables. The use of valves at lower temperatures than shown in the rating tables is permitted providing the bending rupture energy of the body and cover material measured on three 10 mm 10 mm specimens in acco
45、rdance with EN ISO 148-1, shall be not less than an average of 27 J at a temperature no higher than the lowest scheduled operating temperature. 4.2.2.4.2 Cast iron check valves Temperatures lower than those given in the pressure/temperature ratings tables of EN 12516-4:2014 can be used only if the s
46、hells and bonnets are manufactured in spheroidal graphite cast iron of grades EN-GJS-350-22-LT or EN-GJS-400-18-LT (see Table 1). Table 1 Allowable material grades for low temperature (LT) design conditions Symbol Number Temperature limits EN-GJS-35022-LT 5.3100 40 C to 350 C EN-GJS-40018-LT 5.3103
47、20 C to 350 C 4.2.2.5 Restrictions Any restrictions of temperature or pressure below those specified in 4.2.2.1 to 4.2.2.4, for example, those imposed by soft seals, special trims, shall be indicated on the valve (see 8.1 a). BS EN 16767:2016EN 16767:2016 (E) 8 4.2.3 Dimensions 4.2.3.1 Face-to-face
48、(FTF), centre-to-face (CTF), end-to-end (ETE) and centre-to-end (CTE) dimensions Face-to-face (FTF) and centre-to-face (CTF) dimensions for PN or Class designated flanged end and wafer type valves shall be in accordance with prEN 558:2015. The end-to-end (ETE) and centre-to-end (CTE) dimensions of b
49、utt welding end valves shall be selected from EN 12982:2009. The end-to-end (ETE) and centre-to-end (CTE) dimensions of threaded end valves shall be selected from EN 16722. The end-to-end and centre-to-end dimensions of socket welding end valves are at the choice of the manufacturer. 4.2.3.2 Body ends 4.2.3.2.1 Flanged ends of PN designated valves shall comply with the requirements of EN 1092-1:2007+A1:2013 for steel shells or EN 1092-2:1997 for cast iron shells. Flan
