SIST EN 12050-4:2015

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Abwasserhebeanlagen für die Gebäude- und Grundstücksentwässerung - Teil 4: Rückflussverhinderer für fäkalienfreies und fäkalienhaltiges AbwasserStations de relevage d'effluents pour les bâtiments et terrains - Partie 4 : Dispositifs anti-retour pour effluents contenant ou non des matières fécalesWastewater lifting plants for buildings and sites - Part 4: Non-return valves for faecal-free wastewater and wastewater containing faecal matter91.140.80Drenažni sistemiDrainage systemsICS:Ta slovenski standard je istoveten z:EN 12050-4:2015SIST EN 12050-4:2015en,fr,de01-maj-2015SIST EN 12050-4:2015SLOVENSKI
STANDARDSIST EN 12050-4:20011DGRPHãþD



SIST EN 12050-4:2015



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12050-4
March 2015 ICS 91.140.80 Supersedes EN 12050-4:2000English 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 d'effluents pour les bâtiments et terrains - Partie 4 : Dispositifs anti-retour pour effluents contenant ou non des matières fécales
Abwasserhebeanlagen für die Gebäude- und Grundstücksentwässerung - Teil 4: Rückflussverhinderer für fäkalienfreies und fäkalienhaltiges 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 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 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 CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12050-4:2015 ESIST EN 12050-4:2015



EN 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 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 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 Durability 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 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 Product specific requirements . 15 6.3.4 Procedure for modifications . 16 SIST EN 12050-4:2015



EN 12050-4:2015 (E) 3 7 Marking, labelling and packaging . 16 7.1 Manufacturer's declaration . 16 7.2 Marking . 16 Annex A (informative)
Recommended materials . 17 Annex ZA (informative)
Clauses of this European Standard 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 (DoP) . 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
SIST EN 12050-4:2015



EN 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 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 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 the 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 for 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 faecal 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 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: 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, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 12050-4:2015



EN 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 construction 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 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 12050-2:2015, 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 — Part 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 (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 either 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 draining 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 SIST EN 12050-4:2015



EN 12050-4:2015 (E) 6 3.2 Symbols and abbreviations 3.2.1 Symbols di pipe internal diameter, in mm Ds solids 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 of 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). Examples 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 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 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 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. SIST EN 12050-4:2015



EN 12050-4:2015 (E) 7 4.3.3 Solids passage Non-return valves shall ensure that solids present in 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: Ds
is the ball passage, in millimetres; di
is the internal diameter of the discharge 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 < 80. 4.3.5 Nominal pressure of non-return valves Non-return valves shall at least comply with a nominal pressure of PN 4. 4.4 Internal leakage When tested in accordance with 5.2.3 no more water than specified in Table 1 shall pass through the valve. Table 1 — Relationship between valve size and maximum internal leakage Size Maximum internal leakage (in litres) during the test time of 10 min DN < 32 0,5 32 ≤ DN ≤ 100 1 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 containing 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 need 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 valve's constituent material(s), according to the standard(s) referred to in EN 13501-1, as specified in 4.5.3. SIST EN 12050-4:2015



EN 12050-4:2015 (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 the non-return valve's 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/are 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 classified 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 constituent 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 13501–1, this may be in the case of: — a homogeneous non-return valve, its material, or — a non-homogeneous 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/m2 or 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 4.5.3.2. 4.5.3.2 Sizes and mounting of the test specimen The test specimen of each constituent material shall be in accordance with EN 13823 in a flat-sheet form of the following sizes: — short wing: (495 ± 5) mm × (1 500 ± 5) mm; — long wing: (1 000 ± 5) mm × (1 500 ± 5) mm. 4.6 Durability 4.6.1 General Non-return valves are products of known and stable performance for defined end use applications with respect to their established durability for which experience has been accumulated over a long period of time. Durability is ensured by meeting the requirements of this standard, which represent the state of the art.
1) See Decision of the Commission 96/603/EC of 1996-10-04 (see OJEU L 267 of 1996-10-19), as twice amended by 2000/605/EC of 2000-09-26 (see OJEU L 258 of 2000-10-12) and by 2003/424/EC of 2003-06-06 (see OJEU L 144 of 2003-06-12). SIST EN 12050-4:2015



EN 12050-4:2015 (E) 9 For new materials the manufacturer has to take appropriate measures to verify that the non-return valve made of the new material is in accordance with the performance characteristics required by this standard. 4.6.2 Durability of watertightness Durability of watertightness is ensured by meeting the requirements according to 4.4, when tested in accordance with 5.2.3. 4.6.3 Durability of effectiveness Durability of effectiveness is ensured by meeting the requirements according to 4.3.1, when tested in accordance with 5.2.1, 5.2.2 and 5.2.5. 4.6.4 Durability of mechanical resistance Durability of mechanical resistance is ensured by meeting the requirements according to 4.2, when tested in accordance with 5.2.4. 4.7 Noise level For non-return valves as a separate component, the emitted airborne noise shall be measured according to EN ISO 20361 at a flow velocity of 0,7 m/s and a shut off with a vertical water column of 2 m above the valve outlet. The manufacturer shall declare the A-weighted emission sound pressure level (to be measured at 1 m distance from the non-return valve). Measurements shall be performed according to EN ISO 20361. If an A-weighted emission sound pressure level is above 80 dB, the sound power level shall be determined according to EN ISO 20361 and shall be declared. Where the manufacturer declares that the A-weighted emission sound pressure level is equal to 70 dB, although it might be smaller, the manufacturer may state “70 dB(A)”. If the manufacturer declares a lower value than 70 dB(A) the non-return valve shall be measured according to EN ISO 20361 and the corresponding test result shall be declared. 4.8 Dangerous substances National regulations on dangerous substances may require verification and declaration on release, and sometimes content, when construction products covered by this standard are placed on those markets. In the absence of European harmonized test methods, verification and declaration on release/content should be done taking into account national provisions in the place of use. 5 Testing 5.1 General Testing shall be carried out on a non-return valve that complies with the shape, dimensions and materials given in the testing documentation. The test shall demonstrate compliance with the effectiveness given in Clause 4.3. If the closure device consists of a ball, its diameter and mass shall be checked. If the application of the non-return valves is not specified, valves shall be tested in accordance with both 5.2.1 and 5.2.2. The test has to be performed with the valves to be tested in the designated installation position. SIST EN 12050-4:2015



EN 12050-4:2015 (E) 10 5.2 Effectiveness testing 5.2.1 Faecal-free wastewater The operation of non-return valves shall be tested in accordance with EN 12050-2:2015, 5.3, or EN 12050-3:2015, 5.5, as appropriate. After testing, the non-return valves shall be examined to ensure that they remain able to operate. 5.2.2 Wastewater containing faecal matter The operation of non-return valves shall be tested in accordance with EN 12050-1:2015, 5.3, or EN 12050-3:2015, 5.4. The pieces of test material shall pass through the non-return valve. After the test the non-return valve shall be opened and checked that no test material has settled. 5.2.3 Internal leakage Non-return valves shall be subjected to a back pressure of 0,2 bar for 10 min using clean water. 5.2.4 Pressure testing The test, in accordance with the requirements of 4.2, shall be carried out with clean water for 10 min, in closed and open condition. Non-return valves shall be able to withstand a pressure of at least 1,5 times the nominal pressure. 5.2.5 Testing of backwash devices If there is a venting device, it shall be tested that it can also be opened at a counter pressure of 1 bar without damaging the function parts. 6 Assessment and verification of constancy of performance - AVCP 6.1 General The compliance of non-return valves for faecal free wastewater and wastewater containing faecal matter with the requirements of this standard and with the performances declared by the manufacturer in the declaration of performance (DoP) shall be demonstrated by: — determination of the product-type on the basis of type testing; — factory production control by the manufacturer, including product assessment. The manufacturer shall always retain the overall control and shall have the necessary means to take responsibility for the conformity of the product with its declared performance(s). 6.2 Type testing 6.2.1 General All the performances related to characteristics included in this standard other than the essential characteristic shall be determined when the manufacturer intends to declare the respective performances unless the standard gives provisions for declaring them without performing tests. (e.g. use of previously existing data, CWFT and conventionally accepted performance). Assessment previously performed in accordance with the provisions of this standard, may be taken into account provided that they were made to the same or a more rigorous test method, under the same AVCP SIST EN 12050-4:2015



EN 12050-4:2015 (E) 11 system on the same product or products of similar design, construction and functionality, such that the results are applicable to the product in question. NOTE 1 Same AVCP system means testing by an independent third party. For the purposes of assessment, the manufacturer's products may be grouped into families, where it is considered that the results for one or more characteristics from any one product within the family are representative for that same characteristics for all products within that same family. NOTE 2 Products may be grouped in different families for different characteristics. Reference to the assessment method standards should be made to allow the selection of a suitable representative sample. In addition, the determination of the product type shall be performed for all characteristics included in the standard for which the manufacturer declares the performance: — at the beginning of the production of a new or modified non-return valve for faecal free wastewater and wastewater containing faecal matter (unless a member of the same product range); or — at the beginning of a new or modified method of production (where this may affect the stated properties); or — they shall be repeated for the appropriate characteristic(s), wheneve
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