1、STD-BSI BS EN 1074-4-ENGL 2000 1624bb9 OB BRITISH STANDARD Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 4: Air valves The European Standard EN 107442000 has the status of a British Standard ICs 23.060.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT
2、 A6 PERMITTED BY COPYRIGHT LAW 4452 211 m BS EN 107442000 - STD-BSI BS EN 1074-4-ENGL 2000 lb24b9 0874453 158 BS EN 10744:2000 Date National foreword Comments This British Standard is the officiai English language version of EN 107442000. The UK participation in its preparation was entrusted by Tech
3、nical Committee PSE7, Valves, to Subcommittee PsE/7/7, Valves for the water indwry, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate i
4、nterpretation, or proposals for change, and keep the TJK interests informed; them in the UK A iist of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to
5、in this document may be found in the BSI Standards Catalogue under the section entitled “Jnternational Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a conkact.
6、 Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN titie page, pages 2 to 14, an inside back cov
7、er and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Amendments issued since publication Amd.
8、 No. Standards Commikee and comes into effect on 15 September 2000 O ES1 09-2000 ISBN O 680 36424 O e STDeBSI BS EN 1074-4-ENGL ZOO0 1b24bb9 0874454 094 EUROPEAN STANDARD NORME EUROPEENNE EUROPASCHE NORM EN 1074-4 July 2000 ICs 91.140.60 English version Valves for water supply - Fitness for purpose
9、requirements and appropriate verification tests - Part 4: Air valves Robinetterie pour lalimentation en eau - Prescriptions daptitude lemploi et vrifications sy rapportant - Partie 4: Purgeurs et ventouses flotteur Armaturen fr die Wasseiversorgung - Anforderungen an die Gebrauchstauglichkeit und de
10、ren PrOfung -Teil 4: Be- und EntlURungsventile mit Schwimmkrper This European Standard was approved by CEN on 18 June 2000. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard with
11、out any alteration. Up-to-date lists and bibliographical references concerning sich national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language m
12、ade by tmslation under the responsibility of a CEN member into its own language and notied to the Central Secretariat has the same status as he official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ir
13、eland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FOR NORMUNG Central Secretariat: rue de Stassart, 36 8-1050 Brussels Q 2000 CEN All rights of exploitation
14、in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10744:2000 E STDOBSI BS EN L074-4-ENGL 2000 II Lb24bb9 0874455 T20 = Page 2 EN 1074-412000 Contents Page Foreword 3 Introduction - 4 I 2 3 4 5 5.1 5.2 5.3 5.4 5.5 6 6.1 6.2 6.3 7 8 Scope 5 Normative references 5 Te
15、rms and definitions - 5 Design requirements . 6 Performance requirements . 6 Mechanical strength 6 Airflow characteristics . . 7 Resistance to disinfection products 7 Endurance . 7 Conformity assessment . . 8 General 8 Type tests . 8 Control of production process and quality system . 8 Marking . 8 P
16、ackaging - 8 . LeaMightness . 6 Annex A (normative) Test method for the airflow characteristics of valves with an air release Annex B (normative) Test method for the airflow characteristics of valves with an air intake Annex C (normative) Test method for the endurance of valves with air intake andlo
17、r air release function (see 5.3 and 5.3.1) . 10 function (see 5.3 and 5.3.2) . 12 functions (see 5.3 and 5.3.3) . 14 Q BSI 09-2000 Page 3 EN 107442000 Foreword This European Standard has been prepared by Technical Committee CEN/TC 69, Industrial valves, the Secretariat of which is held AFNOR. This E
18、uropean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2001, and conflicting national standards shall be withdrawn at the latest January 2001, According to the CENICENELEC Internal Regulations, the nat
19、ional standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Noway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. E
20、N 1074 consists of six parts: - Part 1: General requirements; - Patt 2: Isolating valves; - Part 3: Check valves; - Patt 4: Air valves; - Part 5: Control valves; - Patt 6: Hydrants. Part 1 , in conjunction with the subsequent parts, lays down the general requirements and test procedures to be carrie
21、d out in production and during the assessment of conformity of these valves (type tests). The detailed requirements, which depend on the types of valves, are defined in Parts 2 to 6 of this standard. Q BSI 09-2000 STD-BSI BS EN b074-4-ENGL 2000 I lb24bb9 0874457 BT3 m Page 4 EN 1074-4:2000 Introduct
22、ion In respect of potential adverse effects on the quality of water intended for human consumption caused by the product covered by this standard: a) this standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) it s
23、hould 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. Q BSI 09-2000 STD.BS1 BS EN 1074-4-ENGL 2000 m 1b24bb 0874458 73T m Page 5 EN 1074-4:2000 1 Scope This Europe
24、an Standard specifies the minimum fitness for purpose requirements for valves 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 standard specifies the design requirements, the performance requirements, an
25、d the conformity assessment method for valves, whatever their type and materials. This standard applies in priority to any other product or test standard: the requirements from other standards apply only when this standard refers to them. This standard deals with the requirements applicable to air v
26、alves with DN up to DN 300 and PFA 6 to PFA 25. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For date
27、d references, subsequent amendments to or revisions of any of these publications apply to this standard, only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 736-1, Valves - Terminology - Pa
28、rt 1: Definition of the types of valves. EN 736-3, Valves - Terminology - Part 3: Definition of terms. EN 805, Water supply - Requirements for systems and components outside buildings. EN 1074-1 :2000, Valves for water supply - Fitness for purpose requirements and appropiate verification tests - Par
29、t 1: General requirements. EN 1074-2:2000, Valves for water supply - fitness for purpose requirements and appropiate vefications tests - Part 2: Isolating valves. 3 Terms and definitions For the purposes of this standard, the terms and definitions given in EN 1074-1 apply together with the following
30、: 3.1 float type purgers and air valves self-operating float type valves for the evacuation of air from, or for the ingress of air into water pipelines. Such valves may be single float or double float and may fulfil one or more of the following functions: air release, air intake, air venting 3.2 air
31、 release function to discharge a large air flow from a water pipeline 3.3 air intake function to admit a large air flow into a water pipeline 3.4 air venting function to purge entrapped air from a water pipeline in service under pressure Q BSI 09-2000 - STDmBSI BS EN L074-4-ENGL 2000 1624669 0874459
32、 676 Page 6 EN 1074-412000 4 Design requirements Self-operating float type purgers and air valves shall be designed in compliance with the requirements given in clause 4 of EN 1074-1:2000. In addition, these valves may be fitted with an integrated isolating device which shall be in accordance with E
33、N 1074-2. 5 Performance requirements 5.1 Mechanical strength 5.1.1 Resistance to internal pressure of the shell and all pressure containing components Requirement and test shall be in accordance with 5.1.1 of EN 1074-1:2000. For double float valves, the obturators may be tested simultaneously or sep
34、arately. 5.1.2 Resistance of the obturator to differential pressure Tested within 5.1 .I. 5.1.3 Resistance of valves to bending Not applicable. 5.1.4 Resistance of valves to operating loads Not applicable, except for any integrated isolating device which shall be in accordance with 5.1.4 of EN 1074-
35、2:2000. 5.2 Leaktightness 5.2.1 Leaktightness of the shell and all pressure containing components 5.2.1 .I Leaktightness to internal pressure The requirement of leaktightness to internal pressure is fulfilled by conformance to 5.1 .I. 5.2.1.2 Leaktightness to external pressure Not applicable, except
36、 for any integrated isolating device which shall be in accordance with 5.2.1.2 of EN 1074-212000. 5.2.2 Seat tightness 5.2.2.1 Seat tightness at high pressure Requirement and test shall be in accordance with 5.2.2.1 of EN 1074-1:2000, the test fluid shall be water. The leakage rate shall be the rate
37、 A. For a type test, the test duration shall be not less than 10 min. For double float valves, the obturators may be tested simultaneously or separately. 5.2.2.2 Requirement and test shall be in accordance with 5.2.2.2 of EN 1074-1:2000, with test fluid, leakage rate and test duration as given in 5.
38、2.2.1. For double float valves, the obturators may be tested simultaneously or separately. Seat tightness at low pressure Q BSI 09-2000 STDmBSI BS EN LO74-4-ENGL 2000 Lh24bb9 08744b0 398 Page 7 EN 107442000 5.2.3 Maximum operating torque (MOT) for operation and tightness Not applicable, except for a
39、ny integrated isolating device which shall be in accordance with 5.2.3 of EN 1074-2:2000. 5.3 Airflow characteristics Requirement shall be in accordance with 5.3 of EN 1074-1 :2000. The characteristics given by the manufacturer shall be the air flow as a function of pressure. When it is measured acc
40、ording to the conditions defined in the relevant hereafter subclauses, the flow shall be not less than 90 % of the value indicated by the manufacturer, at two points of the curve, these two points being indicative of the range and functions of the valve. 5.3.1 Air release function The type test shal
41、l be in accordance with Annex A. Testing is not required for air valves larger than DN 1 OO. 5.3.2 Air intake function The type test shall be in accordance with Annex B. Testing is not required for air valves larger than DN 100. 5.3.3 Air venting function The air venting function shall be verified b
42、y measuring the section of the small orifice of the valve, calculating the flow through it under sonic conditions and comparing the result with the value given in the manufacturers catalogues. The difference shall be no greater than I1 O %. 5.4 Resistance to disinfection products Requirement and tes
43、t shall be in accordance with 5.4 of EN 1074-1 :2000. 5.5 Endurance 5.5.1 Endurance of valves with air intake andlor air release functions The endurance of a valve with air intake and/or air release functions shall be evaluated by subjecting the valve to 250 consecutive cycles of filling and drainin
44、g in accordance with Annex Cl the pressure varying from atmospheric to PFA; the valve shall open and close fully during the test and shall pass the leaktightness tests in accordance with 5.2.1 and 5.2.2 after the 250 cycles. 5.5.2 Endurance of valves with an air venting function The endurance of a v
45、alve with air venting function shall be evaluated by subjecting the valve to 2 500 consecutive cycles of air venting. This may be achieved by continuous injection of air into the system allowing the valve to cycle automatically, or by cyclic injection of air. The valve shall open and close fully at
46、each cycle of the test and shall pass the leaktightness tests in accordance with 5.2.1 and 5.2.2 after the 2 500 cycles. O BSI 09-2000 STD-BSI BS EN 107Y-Y-ENGL 2000 = Lb24bb7 0674463 224 Page 8 EN 10744:2000 5.5.3 Long term unseating test This is an accelerated test to ensure that the obturator wil
47、l release after being under pressure for a long time. The test shall be carried out on a valve in its delivery condition, mounted vertically, at a temperature of (50 -: ) “C, kept under hydraulic pressure of at least PFA during five days. Then release the pressure and check that the valve opens norm
48、ally. The valve shall pass the leaktightness tests in accordance with 5.2.1 and 5.2.2. Valves with several functions shall be tested without isolating the parts ensuring the different functions. 6 Conformity assessment 6.1 General Requirement shall be in accordance with 6.1 of EN 1074-1 :2000. 6.2 T
49、ype tests Requirement shall be in accordance with 6.2 of EN 1074-1:2000; the type tests to be performed shall be those given in Table 1. 6.3 Control of production process and quality system Requirement shall be in accordance with 6.3 of EN 1074-1:2000; the production tests given in Table 1 are informative. 7 Marking Requirement shall be in accordance with clause 7 of EN 1074-1:2000. 8 Packaging Requirement shall be in accordance with clause 8 of EN 1074-1:2000. 8 BSI 09-2000 STD-BSI BS EN L074-4-ENGL 2000 U Lb24bbS 08744b2 LbO 9 4.1 4.2 a 4.3 4.4 4.5
