1、BSI Standards PublicationBS EN 12050-4:2015Wastewater lifting plants forbuildings and sitesPart 4: Non-return valves for faecal-freewastewater and wastewater containingfaecal matterBS EN 12050-4:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12050-4:2015.
2、It supersedes BS EN 12050-4:2001 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/505, Wastewater engineering.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to includ
3、e all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 79317 2 ICS 13.060.30; 91.140.80 Compliance with a British Standard cannot confer immunity from legal obligati
4、ons.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12050-4 March 2015 ICS 91.140.80 Supersedes EN 12
5、050-4:2000English Version Wastewater lifting plants for buildings and sites - Part 4: Non-return valves for faecal-free wastewater and wastewater containing faecal matter Stations de relevage deffluents pour les btiments et terrains - Partie 4 : Dispositifs anti-retour pour effluents contenant ou no
6、n des matires fcales Abwasserhebeanlagen fr die Gebude- und Grundstcksentwsserung - Teil 4: Rckflussverhinderer frfkalienfreies und fkalienhaltiges Abwasser This European Standard was approved by CEN on 17 January 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
7、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 CEN-CENELEC Management Centre or to any CEN member. This Europ
8、ean 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are
9、 the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Rom
10、ania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and b
11、y any means reserved worldwide for CEN national Members. Ref. No. EN 12050-4:2015 EBS EN 12050-4:2015EN 12050-4:2015 (E) 2 Contents Page Foreword 4 1 Scope 5 2 Normative references 5 3 Terms, definitions, symbols and abbreviations .5 3.1 Terms and definitions .5 3.2 Symbols and abbreviations 6 3.2.1
12、 Symbols 6 3.2.2 Abbreviations .6 4 Materials and product characteristics .6 4.1 Materials .6 4.2 Mechanical resistance .6 4.3 Effectiveness 6 4.3.1 General 6 4.3.2 Connections .6 4.3.3 Solids passage .7 4.3.4 Cleanability .7 4.3.5 Nominal pressure of non-return valves .7 4.4 Internal leakage 7 4.5
13、Reaction to fire .7 4.5.1 General 7 4.5.2 Non-return valves classified as Class A1 without the need for testing .8 4.5.3 Non-return valves classified according to test results 8 4.6 Durability 8 4.6.1 General 8 4.6.2 Durability of watertightness .9 4.6.3 Durability of effectiveness 9 4.6.4 Durabilit
14、y of mechanical resistance 9 4.7 Noise level 9 4.8 Dangerous substances .9 5 Testing 9 5.1 General 9 5.2 Effectiveness testing 10 5.2.1 Faecal-free wastewater 10 5.2.2 Wastewater containing faecal matter . 10 5.2.3 Internal leakage . 10 5.2.4 Pressure testing 10 5.2.5 Testing of backwash devices 10
15、6 Assessment and verification of constancy of performance - AVCP . 10 6.1 General . 10 6.2 Type testing . 10 6.2.1 General . 10 6.2.2 Test samples, testing and compliance criteria 11 6.2.3 Test reports . 12 6.3 Factory production control (FPC) . 12 6.3.1 General . 12 6.3.2 Requirements 12 6.3.3 Prod
16、uct specific requirements 15 6.3.4 Procedure for modifications 16 BS EN 12050-4:2015EN 12050-4:2015 (E) 3 7 Marking, labelling and packaging 16 7.1 Manufacturers declaration . 16 7.2 Marking . 16 Annex A (informative) Recommended materials . 17 Annex ZA (informative) Clauses of this European Standar
17、d addressing the provisions of the EU Construction Products Regulation 18 ZA.1 Scope and relevant characteristics . 18 ZA.2 Procedure for AVCP of non-return valves for faecal-free wastewater and wastewater containing faecal matter . 19 ZA.2.1 System(s) of AVCP 19 ZA.2.2 Declaration of performance (D
18、oP) . 23 ZA.2.2.1 General 23 ZA.2.2.2 Content 23 ZA.2.2.3 Example of DoP 24 ZA.3 CE marking and labelling 26 Bibliography 30 BS EN 12050-4:2015EN 12050-4:2015 (E) 4 Foreword This document (EN 12050-4:2015) has been prepared by Technical Committee CEN/TC 165 “Wastewater engineering”, the secretariat
19、of which is held by DIN. 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 September 2015 and conflicting national standards shall be withdrawn at the latest by December 2016. Attention is drawn to
20、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 12050-4:2000. This document has been prepared under a mandate given to CEN by th
21、e European Commission and the European Free Trade Association, and supports essential requirements of the Regulation (EU) No. 305/2011. For relationship with EU Regulation, see informative Annex ZA, which is an integral part of this document. The standard series EN 12050 “Wastewater lifting plants f
22、or buildings and sites” consists of the following parts: Part 1: Lifting plants for wastewater containing faecal matter Part 2: Lifting plants for faecal-free wastewater Part 3: Lifting plants for limited applications Part 4: Non-return valves for faecal-free wastewater and wastewater containing fae
23、cal matter The main changes with respect to the previous edition are listed below: a) reaction to fire added; b) paragraph title “Evaluation of conformity” changed to “Assessment and verification of constancy of performance AVCP” and updated; c) Annex ZA updated in accordance with “Implementation of
24、 the Construction Products Regulation (CPR) in harmonized standards” (adoption of the Regulation EU No. 305/2011); d) editorially revised. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
25、 Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
26、Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12050-4:2015EN 12050-4:2015 (E) 5 1 Scope This European Standard applies to non-return valves used for faecal-free wastewater and wastewater containing faecal matter lifting plants. This Standard specifies general requirements, basic construc
27、tion and testing principles together with information on materials and the relevant assessment and verification of constancy of performance. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For
28、 dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12050-1:2015, Wastewater lifting plants for buildings and sites Part 1: Lifting plants for wastewater containing faecal matter EN 12050-2:20
29、15, Wastewater lifting plants for buildings and sites Part 2: Lifting plants for faecal-free wastewater EN 12050-3:2015, Wastewater lifting plants for buildings and sites Part 3: Lifting plants for limited applications EN 13501-1, Fire classification of construction products and building elements Pa
30、rt 1: Classification using data from reaction to fire tests EN 13823, Reaction to fire tests for building products - Building products excluding floorings exposed to the thermal attack by a single burning item EN ISO 20361, Liquid pumps and pump units - Noise test code - Grades 2 and 3 of accuracy (
31、ISO 20361) 3 Terms, definitions, symbols and abbreviations For the purposes of this document, the following terms and definitions apply. 3.1 Terms and definitions 3.1.1 non-return valve part of a wastewater lifting plant that prevents backflow of wastewater from the discharge pipe system which is ei
32、ther integrated in or a separate part of the plant 3.1.2 integrated non-return valve non-return valve which is a constructed part of the wastewater lifting plant - integrated in the plant or built in the plant by the manufacturer 3.1.3 backwash device part of the non-return valve which allows draini
33、ng of the discharge pipe system and venting of the pumping device 3.1.4 maximum pump operating pressure maximum hydrostatic pressure that the pumping device is capable to create BS EN 12050-4:2015EN 12050-4:2015 (E) 6 3.2 Symbols and abbreviations 3.2.1 Symbols dipipe internal diameter, in mm Dssoli
34、ds ball passage, in mm Q flow rate, in l/s H discharge head, in m v flow velocity, in m/s 3.2.2 Abbreviations AVCP assessment and verification of constancy of performance DN nominal diameter CWT classified without testing CWFT classified without further testing SBI single burn item DoP declaration o
35、f performance FPC factory production control 4 Materials and product characteristics 4.1 Materials Materials used shall be adequate to meet the demands of installation and operation. Materials shall comply with the requirements given in 4.3 and shall not release dangerous substances (see 4.8). Examp
36、les of suitable materials for the construction of non-return valves are given in Annex A (informative). Only corrosion resistant materials or materials with a corrosion resistant protective coating shall be used. 4.2 Mechanical resistance When tested in accordance with 5.2.4 no visible leakage shall
37、 appear during the test. Connections to the discharge pipe system shall resist longitudinal forces and withstand the maximum pump pressure. 4.3 Effectiveness 4.3.1 General Non-return valves shall automatically prevent wastewater flowing back from the discharge pipe system when the pumping operation
38、stops. Non-return valves shall open automatically during pumping. When tested in accordance with 5.2.1, 5.2.2, 5.2.4 and 5.2.5 the non-return valves shall continue to operate. 4.3.2 Connections Connections to the discharge pipe system shall be capable of withstanding the maximum pump pressure of the
39、 wastewater lifting plant without leakage. Non-return valves which are put on the market as a separate component shall have pipeline connections complying with relevant pipe standards. BS EN 12050-4:2015EN 12050-4:2015 (E) 7 4.3.3 Solids passage Non-return valves shall ensure that solids present in
40、wastewater, particularly fibrous materials, cannot be retained. The ball passage (Ds) of a non-return valve shall be at least 80 % of the internal diameter (di) of the discharge pipe minus 4 mm i.e.: mm480S=id,D where: Dsis the ball passage, in millimetres; diis the internal diameter of the discharg
41、e pipe, in millimetres. 4.3.4 Cleanability It shall be possible to clean the non-return valves, though the cleaning possibility is not necessary in case of non-return valves of DN 100 3 4.5 Reaction to fire 4.5.1 General Where use of a non-return valve for faecal free wastewater and wastewater conta
42、ining faecal matter is subject to national regulatory requirements on reaction to fire, its reaction to fire performance shall be considered as that of its components (i.e. material approach) and shall be declared as one of the following classes, according to EN 13501-1: a) Class A1, without the nee
43、d for testing (CWT), when meeting the requirements, specified in 4.5.2, or otherwise; b) Class A1 to E, defined according to the results of testing the non-return valves constituent material(s), according to the standard(s) referred to in EN 13501-1, as specified in 4.5.3. BS EN 12050-4:2015EN 12050
44、-4:2015 (E) 8 4.5.2 Non-return valves classified as Class A1 without the need for testing The reaction to fire performance of a non-return valve for faecal free wastewater and wastewater containing faecal matter shall be declared as Class A11)without the need for testing, provided that: a) each of t
45、he non-return valves constituent materials contains not more than 1 % of homogeneously distributed organic material, by mass or volume (whichever is the most onerous); and b) any external coating, if applied over the surface area of the non-return valve, is made of inorganic material(s), which is/ar
46、e also classified as Class A1. 4.5.3 Non-return valves classified according to test results 4.5.3.1 Principle For the purpose of the reaction to fire performance of the non-return valve each of its constituent materials, including those in surface coating of the non-return valve, if any, shall be cl
47、assified according to EN 13501-1 and only the lowest class of such materials shall be declared. The class of an individual constituent material shall be obtained as the result of the test method(s), relevant to this class, and as specified in the standards referred to in EN 13501-1. NOTE A constitue
48、nt material of the non-return valve is considered as one which may have a significant effect on the reaction to fire performance of such a non-return valve. According to the definitions given in EN 135011, this may be in the case of: a homogeneous non-return valve, its material, or a non-homogeneous
49、 non-return valve, its substantial component (i.e. a material that constitutes a significant part of such non-return valve). A layer with a mass per unit area 1,0 kg/m2or a thickness 1,0 mm is considered to be a substantial component. Test specimens used for the test methods applicable for this classification shall be prepared according to EN 13501-1 and to the relevant standards referred therein. In addition, with regard to the SBI test according to EN 13823, when applied, the test specimen shall be prepared and mounted as specified in 4.
