BS-EN-246-2003.pdf

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1、BRITISH STANDARD BS EN 246:2003 Sanitary tapware General specifications for flow rate regulators The European Standard EN 246:2003 has the status of a British Standard ICS 91.140.70 ? BS EN 246:2003 This British Standard, was published under the authority of the Standards Policy and Strategy Committ

2、ee on 3 September 2003 BSI 3 September 2003 ISBN 0 580 42567 3 National foreword This British Standard is the official English language version of EN 246:2003. It supersedes BS EN 246:1992 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee B/504, Water s

3、upply, to Subcommittee B/504/8, Terminal fittings, which has the responsibility to: A list 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 in this

4、document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contr

5、act. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals fo

6、r change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 17 and a back cover. The BSI copyright notice displayed in

7、 this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 246 August 2003 ICS 91.140.70Supersedes EN 246:1989 English version Sanitary tapware - General specifications for flow rate regul

8、ators Robinetterie sanitaire - Spcifications gnrales des rgulateurs de jets Sanitrarmaturen - Allgemeine Anforderungen an Strahlregler This European Standard was approved by CEN on 16 July 2003. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions

9、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 Management Centre or to any CEN member. This European Standard exists in three official

10、 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgiu

11、m, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORM

12、UNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 246:2003 E EN 246:2003 (E) 2 Contents page Foreword3 1Scope 4 2Normative references 4 3Terms and definitions4 4Designati

13、on.5 5Marking Identification.5 6Materials5 6.1Chemical and hygienic characteristics .5 6.2Exposed surface condition and quality of coating.5 7Dimensions.5 7.1Flow rate regulators with internal thread 6 7.2Flow rate regulators with external thread .7 7.3Ball joint flow rate regulators .7 8Hydraulic c

14、haracteristics9 8.1General9 8.2Flow rate .9 8.3Evaluation of the jet formation.12 9Mechanical performance of flow rate regulators under high temperature12 9.1General12 9.2Test method13 10Mechanical performance of flow rate regulators with plastic housing13 10.1General13 10.2Test method13 11Acoustic

15、characteristics .14 11.1General14 11.2Procedure .14 11.3Requirements.14 Annex A (normative) Dimensions for the mounting of flow rate regulators on nozzle outlets of tapware .15 Bibliography17 EN 246:2003 (E) 3 Foreword This document (EN 246:2003) has been prepared by Technical Committee CEN /TC 164,

16、 “Water supply“, 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 February 2004, and conflicting national standards shall be withdrawn at the latest by Fe

17、burary 2004. This document supersedes EN 246:1989. In respect to potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard, it should be noted that, while awaiting the adoption of verifiable European criteria, existing national r

18、egulations concerning the use and/or the characteristics of this product remain in force. Annex A is normative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Re

19、public, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. EN 246:2003 (E) 4 1 Scope This European Standard specifies: the dimensional, mechanical, hydraulic and a

20、coustic characteristics with which flow rate regulators should comply; the procedures for testing these characteristics. This European Standard is applicable to: flow rate regulators intended to be mounted on tapware used with sanitary appliances in toilets, washrooms and kitchens (single taps, comb

21、ination tap assemblies, mechanical mixing valves, thermostatic mixing valves); flow rate regulators used under the following pressure and temperature conditions: Table 1 Conditions for the use of flow rate regulators Limits of useRecommended limits for correct operation Dynamic Pressure0,05 MPa P 0,

22、5 MPa (0,5 bar P 5 bar) 0,1 MPa P 0,5 MPa (1 bar P 5 bar) Temperature 70 C 65 C Flow rate regulators can only be connected downstream of the obturator of the tap. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These norma

23、tive references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated refer

24、ences the latest edition of the publication referred to applies (including amendments). EN 248, Sanitary tapware General specifications for electrodeposited coatings of Ni-Cr. EN ISO 3822-1, Acoustics Laboratory tests on noise emission from appliances and equipment used in water supply installations

25、 Part 1: Method of measurement (ISO 3822-1:1999). EN ISO 3822-4, Acoustics Laboratory tests on noise emission from appliances and equipment used in water supply installations Part 4: Mounting and operating conditions for special appliances (ISO 3822-4:1997). ISO 49, Malleable cast iron fittings thre

26、aded to ISO 7-1. 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply: flow rate regulator A device which is fitted on the nozzle outlet of a tap to enable its jet to be regulated A distinction is made between: flow rate regulators without air

27、 intake, when operating without aeration of the water; flow rate regulators with air intake, when aeration of the water occurs; ball joint flow rate regulators, when a flow rate regulator with or without aeration is fitted into a ball joint. EN 246:2003 (E) 5 4 Designation A flow rate regulator is d

28、esignated by: its type ; (with/without air intake) its dimension (Q); its acoustic group (I) and flow rate class (A); reference to this standard. Example of designation : Flow rate regulator without air intake, with internal thread : M22x1; I; A EN 246 (cf. Figure 1 and Table 2) Flow rate regulator

29、without air intake, with external thread : M28x1; I; A EN 246 (cf. Figure 2 and Table 1) 5 Marking Identification Flow rate regulators complying with this standard shall be marked permanently and visible on their outer face with: the mark or name of the manufacturer; the acoustic group and the flow

30、rate class. The flow rate class shall be marked on the outer face of the skirt of the grille cage, if it is an interchangeable type detachable changer In order to distinguish flow rate regulators with air intake from flow rate regulators without air intake they shall also be marked with an X on the

31、exterior surface. Ball joint flow rate regulator shall be marked both on the ball joint device and on the flow rate regulator. 6 Materials 6.1 Chemical and hygienic characteristics All materials coming into contact with water intended for human consumption shall present no health risk up to a temper

32、ature of 90 C. They shall not cause any deterioration in water intended for human consumption, with regard to food quality, appearance, odour or taste. Within the recommended limits given in clause 1 for correct operation, the materials shall not be subject to any deterioration which might affect th

33、e operation of the flow rate regulator. Pressurized parts shall withstand the limits of use specified in Table 1. Materials with inadequate corrosion resistance shall be given additional protection. 6.2 Exposed surface condition and quality of coating Visible chromium plated surface and Ni-Cr coatin

34、gs shall comply with the requirements of EN 248. 7 Dimensions NOTEFor values without specified tolerances the tolerances of EN 22768-1 are applicable. EN 246:2003 (E) 6 7.1 Flow rate regulators with internal thread Figure 1 Flow rate regulators with internal thread Table 2 Dimensions for flow rate r

35、egulator with internal thread SymbolValues (mm) MM22x1 6H X14 to 17 T3,5 to 4,3 Ymin 4,5 Jmin 2 EN 246:2003 (E) 7 7.2 Flow rate regulators with external thread Figure 2 Flow rate regulators with external thread Table 3 Dimensions for flow rate regulators with external thread SymbolValues (mm) QM24x1

36、 6gM28x1 6g X14 to 1715 to 19 T4,5 0,17 0,1 RMin. 9Min. 14 U1 + 0,5 / 01 + 0,5 / 0 L24 0/-0,228 0/-0,2 V0,80,8 JMin. 2Min. 2,5 7.3 Ball joint flow rate regulators The connections ball joint to tapware and ball joint to flow rate regulator shall each comply with the requirements of either Table 2 or

37、Table 3. There are two types of ball joint flow rate regulators: EN 246:2003 (E) 8 Type 1Type 2 Dimensions in mm Key 1- Ball joint 2- Flow rate regulators Figure 3 Flow rate regulator with ball jointFigure 4 Ball joint integral with tapware nozzle Type 1Ball joint and flow rate regulator form a comp

38、lete unit (Figure 3). The connection between ball joint and nozzle outlet shall meet the requirements of Table 2 (internal thread) or Table 3 (external thread). Type 2The ball joint is independent of the flow rate regulator (Figure 4). In this case : 1)the flow rate regulator dimensions for the conn

39、ection with ball joint shall meet the requirements of Table 2 (internal thread) or Table 3 (external thread). 2)the ball joint dimensions for the connection with flow rate regulator shall meet the requirements of Table A.1 for flow rate regulators with M22x1 internal thread or Table A.2 for flow rat

40、e regulators with M24x1 or M28x1 external thread (annex A). 1 2 EN 246:2003 (E) 9 8 Hydraulic characteristics 8.1 General The tests described are type tests (laboratory tests) and not quality control tests carried out during manufacture. This clause specifies a test method, the aim of which is to de

41、termine the following characteristics at equal and constant pressure: flow rate (see 8.2); evaluation of the jet formation (see 8.3). 8.2 Flow rate 8.2.1 Test method 8.2.1.1 Assembly The flow rate regulator to be tested shall be connected to a test circuit as shown in Figure 5. Key : 1Galvanized uni

42、on, taper seat 1, U11, in accordance with ISO 49 2Galvanized male long sweep bend 1, G8, in accordance with ISO 49 3Galvanized socket, 1 x 3/4, M2, in accordance with ISO 49 4Adapter in accordance with ISO 3822-4 (see Figure 6 and 7) Figure 5 Test circuit EN 246:2003 (E) 10 Adapters shall be of the

43、following types: a)Adapter with external thread (A3) for controlling M22X1 flow rate regulators. Figure 6 Adapter A3 Table 4 Dimensions of A3 adapters Dimensions in mm Designationd1d2I1I2I3SW Adapter EN ISO 3822-4-A3 M22x1 M22x1 - 6g172451,727 EN 246:2003 (E) 11 b) Adapter with internal thread (A4)

44、for controlling M24X1 and M28X1 flow rate regulators. SW Figure 7 Adapter A4 Table 5 Dimensions of A4 adapters Dimensions in mm Designationd1d2d3I1I2I3SW Adapter EN ISO 3822-4-A4 M24x1 M24x1 - 6H24,5172561,727 Adapter EN ISO 3822-4-A4 M28x1 M28x1 - 6H28,5172681,730 8.2.1.2 Test method Connect the fl

45、ow rate regulator to the adapter 4 shown in Figure 5. Open the water supply circuit and adjust to the required dynamic pressure. Measure the flow rate when a stable and continuous flow is established. EN 246:2003 (E) 12 8.2.2 Requirements Flow rate regulators are classed according to their nominal f

46、low rate at a dynamic pressure of 0,3 MPa (3 bar), with the following tolerances: Table 6 Flow rate of flow rate regulators Flow rate, in (l/s)Class Nominal valueTolerances Z0,150,125 Q 0,15 A0,250,225 Q 0,25 S0,330,30 Q 0,33 B0,420,38 Q 0,42 C0,500,45 Q 0,50 D0,630,58 Q 0,63 The manufacturer is res

47、ponsible for selecting the class. NOTEFlow rate regulators with flow rates lying outside the classes specified do not comply with this standard and therefore cannot be classified. 8.3 Evaluation of the jet formation 8.3.1 Assembly as specified in 8.2.1.1 8.3.2 Test method test as specified in 8.2.1.

48、2 8.3.3 Requirement for flow rate regulators without aeration The jet shall be along the axis of the flow rate regulators outlet and shall flow continuously over a length of 150 mm at the nominal flow rate for each class ;it shall be neither flattened nor constricted, nor scattered to such an extent

49、 that splashing results. It shall remain compact in the pressure range between 0,05 MPa (0,5 bar) and 0,5 MPa (5 bar). 8.3.4 Requirement for flow rate regulators with aeration At a dynamic pressure of 0,3 MPa (3 bar), the jet shall be regular and compact and shall visually exhibit regular and adequate aeration over a length of 150 mm. It shall remain full and