1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1286:1999 The Europ
2、ean Standard EN 1286:1999 has the status of a British Standard ICS 91.140.70 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Sanitary tapware Low pressure mechanical mixing valves General technical specificationThis British Standard, having been prepared under the direction of
3、 the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 September 1999 BSI 09-1999 ISBN 0 580 32600 4 BS EN 1286:1999 Amendments issued since publication Amd. No. Date Comments National foreword This British S
4、tandard is the English language version of EN 1286:1999. It supersedes BS 1415-1:1976 which is withdrawn. 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: aid enquirers to un
5、derstand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcom
6、mittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by
7、using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immun
8、ity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 36, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.CEN European Committee f
9、or Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1286:1999 E EUROPEAN STANDARD EN
10、1286 NORME EUROPE ENNE EUROPA ISCHE NORM April 1999 ICS 91.140.70 English version Sanitary tapware Low pressure mechanical mixing valves General technical specification Robinetterie sanitaire Mitigeurs me caniques basse pression Spe cifications techniques ge ne rales Sanita rarmaturen Mechanisch ein
11、stellbare Mischer fu r den Niederdruckbereich Allgemeine technische Spezifikation This European Standard was approved by CEN on 1 April 1999. 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 nat
12、ional 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 a
13、ny 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, Czech Republic, Denmark, Finland, France, Germ
14、any, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1286:1999 BSI 09-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 164, Water supply, the Secretariat of which is held by AFNOR.
15、 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 October 1999, and conflicting national standards shall be withdrawn at the latest by October 1999. According to the CEN/CENELEC Internal Regulation
16、s, the national 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, Norway, Portugal, Spain, Sweden, Switzerland and the United
17、 Kingdom. Contents Page Foreword 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Definition 3 4 Classification 4 4.1 Single control mechanical mixing valves 4 4.2 Other mechanical mixing valves 4 5 Designation 4 6 Marking Identification 4 6.1 Marking 4 6.2 Identification 4 7 Materials 4 7.1 Ch
18、emical and hygienic characteristics 4 7.2 Exposed surface condition and quality of coating 4 8 Dimensional characteristics 4 8.1 General comment on drawing 4 8.2 Low pressure mechanical mixing valves mounted on horizontal surfaces 4 8.3 Mechanical mixing valves mounted on vertical surfaces 14 8.4 Di
19、mensions of water outlets 16 8.5 Special cases 19 9 Leaktightness characteristics 20 9.1 General 20 9.2 Test methods 20 9.3 Leaktightness of the mixing valve upstream of the obturator and of the obturator 21 Page 9.4 Leaktightness of the obturator: cross flow between hot water and cold water 21 9.5
20、Leaktightness of the mixing valve downstream from the obturator 21 9.6 Leaktightness of manual diverters 21 9.7 Leaktightness of diverters with automatic return 21 9.8 Summary of requirements 21 10 Hydraulic operating characteristics 23 10.1 General 23 10.2 Test method 23 10.3 Apparatus 23 10.4 Moun
21、ting and initial set-up procedure 25 10.5 Determination of flow rate 25 10.6 Sensitivity 25 11 Mechanical performance under pressure 26 11.1 General 26 11.2 Apparatus 26 11.3 Testing the mechanical performance upstream of the obturator Obturator in the closed position 27 11.4 Testing the mechanical
22、performance downstream of the obturator Obturator in the open position 27 12 Mechanical endurance characteristics 27 12.1 Mechanical endurance of the control device 27 12.2 Mechanical endurance of diverters 30 12.3 Mechanical endurance of swivel nozzles 30 13 Torsion resistance characteristics of th
23、e control 31 13.1 General 31 13.2 Test method 31 14 Protection against pollution of drinking water 31 Annex A (normative) Design of reducing adapters 32 Annex B (normative) Examples of pressure take-off tees 32 Annex C (informative) Low hydraulic resistance fittings 34 Annex D (informative) Summary
24、of leaktightness tests 35Page 3 EN 1286:1999 BSI 09-1999 Table 1 Conditions for the use of low pressure mechanical mixing valves Limits of use Recommended limits for correct operation Dynamic pressure 0,01 to 0,1 MPa (0,1 to 1 bar) 0,02 MPa# P# 0,1 MPa (0,2 bar# P# 1,0 bar) Hot water temperature T#
25、908C5 5 # T # 658C Cold water temperature T# 258C T# 258C Mechanical strength 1) static pressure = 1 MPa (10 bar) For low pressure mechanical mixing valves complying with this table there are no acoustical requirements. Low pressure mechanical mixing valves complying with this standard may also be u
26、sed with inlet supply pressures in the range from 0,1 MPa to 0,2 MPa (1,0 bar to 2,0 bar) on condition that acoustical performance is not a requirement of the installation. 1) Low pressure mechanical mixing valves are designed to provide sufficient mechanical strength for operation at 1 MPa (10 bar)
27、 static pressure. Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard: 1) This standard provides no information as to whether the product may be used without restriction in any of the Member State
28、s 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. 1 Scope This European Standard specifies requirements for low hydraulic resistanc
29、e mechanical mixing valves suitable for use in low pressure water supply systems as described in informative annex C. This European Standard specifies: the dimensional, leaktightness, mechanical and hydraulic performance, mechanical endurance characteristics with which low pressure mechanical mixing
30、 valves shall comply; the procedure for testing these characteristics. It is applicable: to low pressure mechanical mixing valves, intended for use on sanitary appliances in washrooms (toilets, bathrooms etc.) and in kitchens; to low pressure mechanical mixing valves used under the following pressur
31、e and temperature conditions given in Table 1. NOTE Mechanical mixing valves for use at pressures in excess than those in Table 1 are covered by EN 817. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative refer
32、ences 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 references the
33、latest edition of the publication referred to applies. EN 31, Pedestal wash basins Connecting dimensions. EN 32, Wall hung wash basins Connecting dimensions. EN 35, Pedestal bidets over rim supply only Connecting dimensions. EN 36, Wall hung bidets over rim supply only Connecting dimensions. EN 111,
34、 Wall hung rinse basins Connecting dimensions. EN 232, Baths Connecting dimensions. EN 246, Sanitary tapware General specifications for flow rate regulators. EN 248, Sanitary taps General technical specifications for electrodeposited nickel chrome coatings. EN 695, Kitchen sinks Connecting dimension
35、s. EN 817, Sanitary tapware Mechanical mixers (PN 10) General technical specifications. EN 1254-2, Copper and copper alloys Plumbing fittings Part 2: Fittings with compression ends for use with copper tubes. prEN 1717, Protection against pollution of potable water in drinking water installations and
36、 general requirements of devices to prevent pollution by backflow. ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation. ISO 5167-1:1991, Measurement of fluid flow by means of pressure differential devices Part 1: Orifice plat
37、es, nozzles and Venturi tubes inserted in circular cross-section conduits running full. 3 Definition For the purposes of this standard, the following definition applies. 3.1 mechanical mixing valve valve which by means of a control device mixes hot and cold water between the “all cold water” positio
38、n and the “all hot water” position and adjusts the flow rate of the mixture obtained between the “no flow” and “maximum flow” positions, either using the same control device or another separate control devicePage 4 EN 1286:1999 BSI 09-1999 4 Classification There are two types of low pressure mechani
39、cal mixing valves: 4.1 Single control mechanical mixing valves Mechanical mixing valves with a single control device for adjusting flow rate and temperature. 4.2 Other mechanical mixing valves Mechanical mixing valves with separate control devices for adjusting flow rate and temperature. 5 Designati
40、on A low pressure mechanical mixing valve is designated by: its type (see clause 4); its nominal size (1/2 or 3/4) (see Table 4), with or without diverter (see Table 2); type of body (see Table 2); type of nozzle (see Table 2); sanitary appliance on which it is to be used (see Table 2); method of mo
41、unting (see Table 2); its flow rate series (see Table 12); the letters LP (low pressure); reference to this standard (EN 1286). In the case of a mechanical bath/shower mixer, the flow rate shall be designated by both flow rate series. The first for the bath outlet, the second for the shower outlet.
42、EXAMPLE Single control mechanical mixing valves 3/4, with diverter, visible body and fixed nozzle outlet, for bath/shower, for horizontal mounting, series 250, LP EN 1286. Table 2 Designation Diverter with or without diverter Type of body Two hole, single hole, visible or concealed Type of nozzle fi
43、xed or moveable nozzle outlet, no nozzle outlet Intended use basin, bidet, sink, bath or shower Mounting method horizontal or vertical surfaces 6 Marking Identification 6.1 Marking Mechanical mixing valves complying with this standard shall be marked permanently and legibly with: the mark or name of
44、 the manufacturer; the letters L.P . 6.2 Identification The temperature control device for the mechanical mixer shall be identified: for cold water by the colour blue; for hot water by the colour red. The identification of cold water shall be on the right and the hot water on the left. 7 Materials 7
45、.1 Chemical and hygienic characteristics All materials in contact with water intended for human consumption shall present no health risk up to a temperature of 908C. They shall not cause any deterioration in water intended for human consumption, with regard to food quality, appearance, odour or tast
46、e. Within the recommended limit given in clause 1 for correct operation, the materials shall not be subject to any deterioration which might compromise the operation of the mechanical mixing valve. Pressurized parts shall withstand the limits of use set in Table 1. Materials with inadequate corrosio
47、n resistance shall be given additional protection. 7.2 Exposed surface condition and quality of coating Visible chromium plated surface and Ni-Cr coatings shall comply with the requirements of EN 248. 8 Dimensional characteristics 8.1 General comment on drawing The design and construction of compone
48、nts without defined dimensions permits various design solutions to be adopted by the manufacturer. Special cases are covered in 8.5. 8.2 Low pressure mechanical mixing valves mounted on horizontal surfaces The standardized dimensions of mechanical mixing valves: firstly, guarantee their mounting and
49、 interchangeability on sanitary appliances complying with EN 31, EN 32, EN 35, EN 36, EN 111, EN 232, EN 695; secondly, give the various options for connection with the water supply.Page 5 EN 1286:1999 BSI 09-1999 8.2.1 Single-hole mechanical mixing valves visible body (see Table 3) 8.2.1.1 Without spray attachment see Figure 1a) Figure 1a) Single-hole mechanical mixing valve without spray attachmentPage 6 EN 1286:1999 BSI 09-1999 8.2.1.2 With spray at
