1、BS EN1074-6:2008ICS 23.060.99NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDValves for watersupply Fitness forpurpose requirementsand appropriateverification testsPart 6: HydrantsThis British Standardwas published under theauthority of the StandardsPolicy and S
2、trategyCommittee on 31 January2009 BSI 2009ISBN 978 0 580 58744 3Amendments/corrigenda issued since publicationDate CommentsBS EN 1074-6:2008National forewordThis British Standard is the UK implementation of EN 1074-6:2008. Itsupersedes BS EN 1074-6:2004 which is withdrawn.The UK participation in it
3、s preparation was entrusted to TechnicalCommittee PSE/7/3, Cast iron, gate, globe and check valves.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are respon
4、sible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 1074-6:2008EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1074-6November 2008ICS 23.060.99 Supersedes EN 1074-6:2004 English VersionValves for water supply - Fitness for purpose
5、 requirements andappropriate verification tests - Part 6: HydrantsRobinetterie pour lalimentation en eau - Prescriptionsdaptitude lemploi et vrifications sy rapportant - Partie 6:Poteaux et bouchesArmaturen fr die Wasserversorgung - Anforderungen andie Gebrauchstauglichkeit und deren Prfung - Teil 6
6、:HydrantenThis European Standard was approved by CEN on 25 September 2008.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 bibliogra
7、phical 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 versions (English, French, German). A version in any other language made by translationunder the responsibility of a CE
8、N 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, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Ital
9、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, 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 Br
10、ussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1074-6:2008: EBS EN 1074-6:2008EN 1074-6:2008 (E) 2 Contents page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Design requiremen
11、ts .6 5 Performance requirements .7 5.1 Mechanical strength 7 5.2 Leak-tightness8 5.3 Hydraulic characteristic 9 5.4 Resistance to disinfection products9 5.5 Endurance 10 5.6 Performance of the draining system .10 6 Conformity assessment 11 6.1 General11 6.2 Type tests .11 6.3 Control of production
12、process and quality system .11 7 Marking .11 8 Packaging .11 Annex A (normative) Test method for the resistance of hydrants to bending .13 A.1 General13 A.2 Test procedure.13 Annex B (normative) Test method for the resistance of pillar hydrants to a force applied above ground level15 B.1 General15 B
13、.2 Test procedure for pillar hydrants not equipped with a breaking system.15 B.3 Test procedure for pillar hydrants equipped with a breaking system .16 Annex C (normative) Test method for the operation of hydrants 17 C.1 General17 C.2 Test procedure.17 Annex D (normative) Test method for the enduran
14、ce of hydrants 18 D.1 General18 D.2 Test procedure.18 D.3 Final tests and acceptance criteria18 Annex E (normative) Test method for the performance of draining system 19 E.1 General19 E.2 Test procedure.19 Bibliography 20 BS EN 1074-6:2008EN 1074-6:2008 (E) 3 Foreword This document (EN 1074-6:2008)
15、has been prepared by Technical Committee 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 May 2009, and conflicting nationa
16、l standards shall be withdrawn at the latest by May 2009. 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
17、1074-6:2004. The following technical changes were made to take into account the publication of EN 14339:2005 and EN 14384:2005: Clause 1 : deletion of the sentence stating that EN 1074-6 is a priority standard; Clause 3: addition of the definition of draining system depth; Clause 4: addition of a re
18、quirement on sealing material; Subclauses 5.1.4 and 5.2.3: deletion of pillar hydrants from Table 2 and addition of a reference to EN 14384:2005; Table 3: addition of draining system depth Pv. EN 1074 consists of six parts: Part 1: General requirements; Part 2: Isolating valves; Part 3: Check valves
19、; Part 4: Air valves; Part 5: Control valves; Part 6: Hydrants. Part 1, in conjunction with the subsequent parts, lays down the general requirements and test procedures to be carried out in production and during the assessment of conformity of these valves (type tests). The detailed requirements, wh
20、ich depend on the types of valves, are defined in parts 2 to 6 of this European Standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republ
21、ic, 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 the United Kingdom. BS EN 1074-6:2008EN 1074-6:2008 (E) 4 Introduction Th
22、is update results from the publication of EN 14339:2005 and EN 14384:2005 which are harmonised under CPD. Thus EN 1074-6 cannot be a priority standard. As the test of EN 1074-6 are currently used by EN 14339:2005 and EN 14384:2005, the test values have been aligned with these European Standards to p
23、revent any ambiguous interpretation. In respect of potential adverse effects on the quality of water intended for human consumption caused by the product covered by this European Standard: 1) this European Standard provides no information as to whether the product can be used without restriction in
24、any of the Member States of the EU or EFTA; 2) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. BS EN 1074-6:2008EN 1074-6:2008 (E) 5 1 Scope This Europea
25、n Standard defines the minimum fitness for purpose requirements for hydrants to be used in, or connected to, water supply pipe systems, above or below ground (see EN 805), carrying water intended for human consumption. This European Standard specifies the design requirements, the performance require
26、ments, and the conformity assessment method for hydrants, whatever their type, materials and functions. Where hydrants can be used for fire fighting, irrigation or other function, additional requirements can be given in other standards. This part of EN 1074 deals with the requirements applicable to
27、both underground and pillar hydrants, in sizes DN 65 to DN 150, and PFA up to 16 bar. This part of EN 1074 does not give requirements for the outlets or their interface with the hydrants, since they are subject to national standards. 2 Normative references The following referenced documents are indi
28、spensable 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 dimensions of metal valves for use
29、 in flanged pipe systems PN and Class designated valves EN 681-1, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage applications Part 1: Vulcanized rubber EN 681-2, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage applica
30、tions Part 2: Thermoplastic elastomers EN 681-3, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage applications Part 3: Cellular material of vulcanized rubber EN 681-4, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage app
31、lications Part 4: Cast polyurethane sealing elements EN 1074-1:2000, Valves for water supply Fitness for purpose requirements and appropriate verification tests Part 1: General requirements EN 1074-2:2000, Valves for water supply Fitness for purpose requirements and appropriate verification tests Pa
32、rt 2: Isolating valves EN 1074-3:2000, Valves for water supply Fitness for purpose requirements and appropriate verification tests Part 3: Check valves EN 1092-2, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 2: Cast iron flanges EN 1267:19
33、99, Valves Test of flow resistance using water as test fluid EN 12266-1:2003, Industrial valves Testing of valves Part 1: Pressure tests, test procedures and acceptance criteria Mandatory requirements EN 14384:2005, Pillar fire hydrants BS EN 1074-6:2008EN 1074-6:2008 (E) 6 3 Terms and definitions F
34、or the purposes of this document, the terms and definitions given in EN 1074-1:2000 and the following apply. 3.1 hydrant connection to a water supply system including an isolating valve 3.2 pillar hydrant hydrant with a connection point located above ground level, for use by water utilities or to su
35、pply water to fire fighting equipment 3.3 breakable pillar hydrant pillar hydrant equipped with a specific device allowing its above ground part to separate from its below ground part, when submitted to an impact 3.4 underground hydrant hydrant with a connection point located under ground level, for
36、 use by water utilities or to supply water to fire fighting equipment 3.5 theoretical ground level limit between the above ground part and the underground part of the pillar hydrant as installed NOTE This point is used for pillar positioning on site, once the height of components of the above ground
37、 part, the depth of water supply pipeline axis and of the unfreezing device are defined. 3.6 draining system depth Pv distance between the theoretical ground level and the orifice of draining system when the hydrant is fitted with a draining system 4 Design requirements Hydrants shall be designed in
38、 accordance with the design requirements given in Clause 4 of EN 1074-1:2000, with the following additional or different requirements. Sealing material shall be in accordance with EN 681-1, EN 681-2, EN 681-3 or EN 681-4 and shall meet the requirements of 4.9 of EN 1074-1:2000. The requirements of E
39、N 558 (interchangeability) shall not apply to hydrants. When fitted with an inlet flange, it shall be in accordance with EN 1092-2. The outlets shall be in accordance with the national requirements. For hydrants manually operated, the preferred direction of closure is clockwise. Hydrants designed fo
40、r anti-clockwise closure shall be marked to indicate the closing direction. If fitted, the breaking system shall be above the ground level and shall be replaceable in-situ. The manufacturer shall indicate in his technical documentation whether the hydrant is equipped with an automatic draining devic
41、e. If fitted, such a device shall comply with the National Health and Safety Regulations. BS EN 1074-6:2008EN 1074-6:2008 (E) 7 The manufacturers technical documentation shall indicate whether the hydrant is equipped with a non-return device. 5 Performance requirements 5.1 Mechanical strength 5.1.1
42、Resistance to internal pressure of the shell and of all pressure containing components Requirement and test shall be in accordance with 5.1.1 of EN 1074-1:2000, except that leakage of an automatic draining device at a pressure less than 1 bar shall not be a reason for failure. To conduct this test t
43、he outlets of the hydrant and a drilled drain plug if fitted shall be blanked off with any suitable device. 5.1.2 Resistance of the obturator to differential pressure Requirement and test shall be in accordance with 5.1.2 of EN 1074-1:2000 and the test shall be performed in the direction of flow. 5.
44、1.3 Resistance of hydrants to bending and to any force applied above the ground level 5.1.3.1 Resistance of the hydrant to bending Requirements shall be in accordance with the first paragraph of 5.1.3 of EN 1074-1:2000. The test shall be performed in accordance with Annex A on any hydrant in its del
45、ivery condition. This test is not required for hydrants designed for installation in a chamber, as given in the manufacturers documentation. The bending moments M to be applied during the test shall be in accordance with the values given in Table 1 of EN 1074-2:2000. 5.1.3.2 Resistance of the pillar
46、 hydrant to a force applied above ground level The test shall be performed in accordance with Annex B. If not equipped with a breaking system, the pillar hydrant shall withstand the force, F, given in the corresponding part of Table 1, remaining leak-tight during the test. If the hydrant is designed
47、 to break at ground level, the force to break the hydrant shall be as given in the corresponding part of Table 1. The pillar hydrant shall remain leak-tight after breaking, and all the parts below the breaking system shall be undamaged. BS EN 1074-6:2008EN 1074-6:2008 (E) 8 Table 1 Force applied abo
48、ve ground level DN Minimum force to apply for pillar hydrants not equipped with a breaking system F N Range of the force to apply to break a pillar hydrant equipped with a breaking system F N 65, 80 and 100 25 000 150 30 000 between 10 000 and 30 000 5.1.4 Resistance of hydrants to operating loads R
49、equirement shall be in accordance with 5.1.4 of EN 1074-1:2000. The test shall be performed in accordance with Annex A of EN 1074-2:2000. The test values shall be in accordance with Table 2 for underground hydrants or with 4.10 of EN 14384:2005 for pillar hydrants. Table 2 Torque requirements for underground hydrants DN 65 80 100 150 MOT (maximum operating torque) (Nm) 85 105 130 195 MST (minimum strength torque) (Nm) 170 210 260 380 5.2 Leak-tightness 5.2.1 Leak-tightness of the shell and of all p
