1、July 2011 Translation by DIN-Sprachendienst.English price group 12No part of this translation 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 2
2、3.060.99; 91.140.40!$s4“1805817www.din.deDDIN EN 1555-4Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 4: ValvesEnglish translation of DIN EN 1555-4:2011-07Kunststoff-Rohrleitungssysteme fr die Gasversorgung Polyethylen (PE) Teil 4: ArmaturenEnglische bersetzung von DI
3、N EN 1555-4:2011-07Systmes de canalisations en plastique pour la distribution de combustibles gazeux Polythylne (PE) Partie 4: RobinetsTraduction anglaise de DIN EN 1555-4:2011-07SupersedesDIN EN 1555-4:2003-04www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall b
4、e considered authoritative.2107.11 DIN EN 1555-4:2011-07 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems” (Secretariat: NEN, Netherlands). The responsible German body involved in i
5、ts preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Working Committee NA 054-05-08 AA Kunststoff-Rohrleitungssysteme fr die Gasversorgung. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall no
6、t be held responsible for identifying any or all such patent rights. Amendments This standard differs from DIN EN 1555-4:2003-04 as follows: a) the standard has been editorially revised; b) normative references have been updated; c) the test parameters of the multiple test have been rendered more pr
7、ecise. Previous editions DIN EN 1555-4: 2003-04 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1555-4 May 2011 ICS 91.140.40; 23.060.99 Supersedes EN 1555-4:2002English Version Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves Systmes de canalisatio
8、ns en plastique pour la distribution de combustibles gazeux - Polythylne (PE) - Partie 4 : Robinets Kunststoff-Rohrleitungssysteme fr die Gasversorgung - Polyethylen (PE) - Teil 4: Armaturen This European Standard was approved by CEN on 17 March 2011. CEN members are bound to comply with the CEN/CEN
9、ELEC 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 Management Centre
10、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 status as the of
11、ficial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, S
12、lovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldw
13、ide for CEN national Members. Ref. No. EN 1555-4:2011: EEN 1555-4:2011 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions, symbols and abbreviations .64 Material .84.1 PE compound .84.2 Material for non-polyethylene parts .85 General characteristics
14、 .95.1 Appearance of the valve .95.2 Colour .95.3 Design .96 Geometrical characteristics . 106.1 General . 106.2 Measurement of dimensions . 106.3 Dimensions of spigot ends for valves 106.4 Dimensions of valves with electrofusion sockets . 106.5 Dimensions of the operating device . 107 Mechanical ch
15、aracteristics of assembled valves 117.1 General . 117.2 Requirements 118 Physical characteristics . 158.1 Conditioning 158.2 Requirements 159 Performance requirements 1610 Marking 1610.1 General . 1610.2 Minimum required marking 1610.3 Additional marking . 1711 Delivery conditions . 17Annex A (norma
16、tive) Determination of the leaktightness of seat and packing . 18A.1 General . 18A.2 Test method . 18DIN EN 1555-4:2011-07 EN 1555-4:2011 (E) 3 Foreword This document (EN 1555-4:2011) has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems”, the secretariat o
17、f which is held by NEN. 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 November 2011, and conflicting national standards shall be withdrawn at the latest by November 2011. Attention is drawn to t
18、he 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 1555-4:2002. It has been prepared in liaison with Technical Committee CEN/TC 234
19、“Gas infrastructure“. System Standards are based on the results of the work undertaken in ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“, which is a Technical Committee of the International Organization for Standardization (ISO). They are supported by separate standards
20、 on test methods to which references are made throughout the System Standard. The System Standards are consistent with general standards on functional requirements and on recommended practice for installation. EN 1555 consists of the following parts: EN 1555-1, Plastics piping systems for the supply
21、 of gaseous fuels Polyethylene (PE) Part 1: General; EN 1555-2, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 2: Pipes; EN 1555-3, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings; EN 1555-4, Plastics piping systems for the s
22、upply of gaseous fuels Polyethylene (PE) Part 4: Valves (this standard); EN 1555-5, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 5: Fitness for purpose of the system; CEN/TS 1555-7, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 7: Gu
23、idance for the assessment of conformity. NOTE EN 12007-2:2000 1 prepared by CEN/TC 234 “Gas infrastructure” deals with the recommended practice for installation of plastics pipes system in accordance with EN 1555 (all parts). According to the CEN/CENELEC Internal Regulations, the national standards
24、organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland
25、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 1555-4:2011-07 EN 1555-4:2011 (E) 4 Introduction The System Standard, of which this is Part 4, specifies the requirements for a piping system and its components made from polyethylene (PE) and which is
26、 intended to be used for the supply of gaseous fuels. Requirements and test methods for material and components, other than valves, are specified in EN 1555-1, EN 1555-2 and EN 1555-3. Characteristics for fitness for purpose are covered in EN 1555-5. CEN/TS 1555-7 2 gives guidance for assessment of
27、conformity. Recommended practice for installation is given in EN 12007-2:2000 1 prepared by CEN/TC 234. This part of EN 1555 covers the characteristics of valves. DIN EN 1555-4:2011-07 EN 1555-4:2011 (E) 5 1 Scope This part of EN 1555 specifies the characteristics of valves made from polyethylene (P
28、E) for piping systems in the field of the supply of gaseous fuels. NOTE 1 Valves made from other material than polyethylene designed for the supply of gaseous fuels conforming to the relevant standards are permitted to be used in PE piping system according to EN 1555 provided they have relevant PE c
29、onnection for butt fusion or electrofusion ends (see EN 1555-3). It also specifies the test parameters for the test methods referred to in this standard. In conjunction with Parts 1, 2, 3 and 5 of EN 1555, it is applicable to PE valves, their joints and to joints with components of PE and other mate
30、rials intended to be used under the following conditions: a) a maximum operating pressure, MOP, up to and including 10 bar 1); b) an operating temperature of 20 C as reference temperature; NOTE 2 For other operating temperatures, derating coefficients should be used, see EN 1555-5. c) an operating t
31、emperature between -20 C and +40 C. EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements concerning colours and additives. NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account thei
32、r particular requirements and any relevant national regulations and installation practices or codes. It is applicable to bi-directional valves with spigot end or electrofusion socket intended to be fused with PE pipes conforming to EN 1555-2 without any fittings or with PE fittings conforming to EN
33、1555-3. This European Standard covers valves for pipes with a nominal outside diameter dn 315 mm. 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
34、 edition of the referenced document (including any amendments) applies. EN 682, Elastomeric Seals Materials requirements for seals used in pipes and fittings carrying gas and hydrocarbon fluids EN 736-1:1995, Valves Terminology Part 1: Definition of types of valves EN 736-2:1997, Valves Terminology
35、Part 2: Definition of components of valves EN 744:1995, Plastics piping and ducting systems Thermoplastics pipes Test method for resistance to external blows by the round-the-clock method EN 1555-1:2010, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 1: General EN 155
36、5-2, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 2: Pipes 1) 1 bar = 0,1 MPa. DIN EN 1555-4:2011-07 EN 1555-4:2011 (E) 6 EN 1555-3:2010, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings EN 1555-5, Plastics piping systems fo
37、r the supply of gaseous fuels Polyethylene (PE) Part 5: Fitness for purpose of the system EN 1680, Plastics piping systems Valves for polyethylene (PE) piping systems Test method for leaktightness under and after bending applied to the operating mechanisms EN 1704, Plastics piping systems Thermoplas
38、tics valves Test method for the integrity of a valve after temperature cycling under bending EN 1705, Plastics piping systems Thermoplastics valves Test method for the integrity of a valve after an external blow EN 12100, Plastics piping systems Polyethylene (PE) valves Test method for resistance to
39、 bending between supports EN 12117, Plastics piping systems Fittings, valves and ancillaries Determination of gaseous flow rate/pressure drop relationships EN 12119, Plastics piping systems Polyethylene (PE) valves Test method for resistance to thermal cycling EN 28233, Thermoplastic valves Torque T
40、est method (ISO 8233:1988) EN ISO 1133, Plastics Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133:2005) EN ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal
41、pressure Part 1: General method (ISO 1167-1:2006) EN ISO 1167-4, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 4: Preparation of assemblies (ISO 1167-4:2007) EN ISO 3126, Plastics piping systems Plastics component
42、s Determination of dimensions (ISO 3126:2005) ISO 10933, Polyethylene (PE) valves for gas distribution systems ISO 11357-6, Plastics Differential scanning calorimetry (DSC) Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) 3 Terms an
43、d definitions, symbols and abbreviations For the purposes of this document, the terms and definitions, symbols and abbreviations given in EN 1555-1:2010, EN 736-1:1995, EN 736-2:1997 and the following apply. 3.1 external leaktightness leaktightness of the valve body enveloping the space containing t
44、he gas, with respect to the atmosphere 3.2 internal leaktightness leaktightness between the inlet and the outlet of the valve, with the valve in the closed position DIN EN 1555-4:2011-07 EN 1555-4:2011 (E) 7 3.3 leaktightness test test for both of the following characteristics: a) the internal leakt
45、ightness of a valves closing seat when closed and pressurized from either side; b) the external leaktightness of a valve when half open 3.4 initiating torque torque required to initiate movement of the obturator 3.5 running torque torque required to achieve full opening or closing of the valve at ma
46、ximum allowable operating pressure 3.6 leakage emission of gas from a valve body, or any component of a valve 3.7 valve body main part of a valve which contains the obturating device (closing element, the seat, the packing seals and the operating stop), as applicable and provides the terminal ends f
47、or connection to the PE pipe/fittings 3.8 operating device part of a valve for connection with the operating key which allows the opening and the closing of the valve 3.9 Terms relating to design 3.9.1 full bore valve valve with a flow section equal to or greater than 80 % of the section correspondi
48、ng to the nominal inside diameter of the body end port EN 736-3:2008 3.9.2 clearway valve valve designed to have an unobstructed flow way, which allows for the passage of a theoretical sphere with a diameter that is not less than the nominal inside diameter of the body end port EN 736-3:2008 3.9.3 r
49、educed bore 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 EN 736-3:2008 DIN EN 1555-4:2011-07 EN 1555-4:2011 (E) 8 4 Material 4.1 PE compound The PE compound from wh
