BS EN 14124-2004 有内溢流的冲洗池的进水阀.pdf

BRITISH STANDARD BS EN 141242004 Inlet valves for ing cisterns with internal overflow The European Standard EN 141242004 has the status of a British Standard ICS 91.140.70 BS EN 141242004 This British Standard was published under the authority of the Standards Policy and StrateApril 2006 BSI 2006 ISBN 0 580 48141 7 National foreword This British Standard is the official English language version of EN 141242004. The UK participation in its preparation was entrusted by Technical Committee B/504, Water supply, 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. Other ination Background When this project first started in CEN/TC 164/WG 8 there were many debates about whether the text should be developed in two Parts or as two separate standards, to reflect requirements for typical products made in mainland Europe or the UK. Discussion at the time was complicated by a similar debate concerning a sister specification being developed by CEN/TC 163 covering requirements for WC ing cisterns wherein inlet valves are used and whether that should be drafted in two Parts, or in the case of cisterns, whether two classes should be included in a single specification. The introduction of the Water Supply Water Fittings Regulations 1999 had a significant impact on this debate from the UK’s perspective, as they introduced regulatory requirements for the perance of WC suites, but removed a previous bylaw requirement for ing cisterns to be equipped with valveless outlet devices i.e. siphons. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests ined; 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, page i, a blank page, the EN title page, pages 2 to 21 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments BS EN 141242004 i After considerable resistance, and intervention by CEN/BT and the EC, it was agreed that EN 997 the European standard being developed for WCs, should include two classes; one covering typical products made in mainland Europe, and the other covering the new UK regulatory requirements. This agreement led to a similar agreement concerning WC ing cisterns wherein prEN 14055 includes two classes. Again, one covers requirements for typical products made in mainland Europe, the other UK regulatory requirements. It took some time before the situation concerning EN 997 and prEN 14055 became apparent to those developing EN 14124, and it was only during the al Vote that major players started believing that the principle of two classes should be written into that also. However, it was too late. The new members of CEN, resulting from the recent enlargement of the European Union, all voted positively and consequently the text was approved by a very slim margin. The Bathroom Manufacturers Association’s position, endorsed by BSI Technical Committee B/504 The Bathroom Manufacturers Association BMA took the view that arguing for inclusion of the UK regulatory requirements in EN 997 involved considerable expense. With WC ing cisterns the pressure for two classes came from mainland Europe. The BMA was unwilling to argue for classes in EN 14124, but agreed to the principle of referencing BS 1212 as Class 2 in a future revision of the standard, when it was suggested in line with the principles adopted in EN 997 and prEN 14055. Members took the view that the Water Regulations made the UK requirements very clear, and that their inclusion in EN 14124 is almost irrelevant. However, they agreed that it would be reasonable to flag up the requirements of the regulations in this national foreword to avoid confusion for the reader. The Water Supply Water Fittings Regulations 1999 Attention is drawn to the Water Supply Water Fittings Regulations 1999 and the Regulators’ Specification for WC Suites delivering a single of 6 litres maximum, or a dual- of 6 litres maximum, and a reduced of no greater than 2/3 of the maximum . The Regulators’ Specification for WC Suites requires inlet valves for WC ing cisterns to comply with the requirements of BS 1212-2, -3 or -4. The requirements of BS 1212-2, -3 and -4 are not included in EN 12124. It is possible that the requirements of BS 1212-2, -3 and -4 will be referenced as Class 2 products in a future revision of EN 14124. Cross-references The British Standards which implement international or European publications referred to in this 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 contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. blank w w w . b z f x w . c o m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14124 September 2004 ICS 91.140.70 English version Inlet valves for ing cisterns with internal overflow Robinet pour remplissage de rservoir de chasse avec trop-plein intrieur Fllventile fr Splksten mit integriertem berlauf This European Standard was approved by CEN on 9 July 2004. CEN members are bound to comply with 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 Central Secretariat 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any and by any means reserved worldwide for CEN national Members. Ref. No. EN 141242004 E w w w . b z f x w . c o m EN 141242004 E 2 Contents page Foreword......................................................................................................................................................................4 1 Scope ..............................................................................................................................................................5 2 Normative references....................................................................................................................................6 3 Terms and definitions ...................................................................................................................................6 4 Materials .........................................................................................................................................................6 5 Design and manufacture...............................................................................................................................6 5.1 Composition of the inlet valve......................................................................................................................6 5.2 Connection to the supply network...............................................................................................................7 5.3 Adjustment of the water level.......................................................................................................................7 5.4 Dimensions of the threaded end connections............................................................................................7 6 Mechanical and hydraulic characteristics ..................................................................................................8 6.1 Threaded end connections...........................................................................................................................8 6.1.1 General............................................................................................................................................................8 6.1.2 Tensile strength.............................................................................................................................................8 6.1.3 Resistance to tightening torque...................................................................................................................9 6.2 Backflow prevention......................................................................................................................................9 6.2.1 General............................................................................................................................................................9 6.2.2 Dimension of the air inlet..............................................................................................................................9 6.2.3 Efficiency of the air inlet ...............................................................................................................................9 6.3 Leaktightness.................................................................................................................................................9 6.3.1 Leaktightness under static pressure...........................................................................................................9 6.3.2 Leaktightness under dynamic pressure......................................................................................................9 6.4 Flow rate and filling time...............................................................................................................................9 6.5 Reopening of the inlet valve.......................................................................................................................10 6.6 Water hammer..............................................................................................................................................10 6.7 Resistance to pressure ...............................................................................................................................10 6.8 Endurance ....................................................................................................................................................10 7 Tests..............................................................................................................................................................10 7.1 General..........................................................................................................................................................10 7.2 End connections..........................................................................................................................................11 7.2.1 Tensile test and torque test apparatus......................................................................................................11 7.2.2 Tensile test operating ....................................................................................................................12 7.2.3 Torque test operating ....................................................................................................................12 7.3 Backflow prevention....................................................................................................................................12 7.3.1 Test apparatus .............................................................................................................................................12 7.3.2 Operating ........................................................................................................................................13 7.4 Leaktightness...............................................................................................................................................13 7.4.1 Test apparatus .............................................................................................................................................13 7.4.2 Static pressure test .......................................................................................................................14 7.4.3 Dynamic pressure test ..................................................................................................................16 7.5 Inlet flow rate.....................................