SIST EN 14455:2005
(Main)Devices to prevent pollution by backflow of potable water - Presssurised air inlet valves DN 15 to DN 50 - Family L, type A and type B
Devices to prevent pollution by backflow of potable water - Presssurised air inlet valves DN 15 to DN 50 - Family L, type A and type B
This document specifies:
a) field of application;
b) requirements for pressurised air inlet valves;
c) dimensional and the physico-chemical properties and the properties of general hydraulic, mechanical and acoustic design of pressurised air inlet valves DN 15 to DN 50;
d) test procedure and requirements for verifying these properties;
e) marking and presentation;
f) acoustics.
This document specifies the characteristics of pressurised air inlet valves DN 15 to DN 50 that are suitable for use in drinking water systems at pressures up to 1 MPa (10 bar) and temperatures up to 65 °C and for 1 h at 90 °C.
Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rückfließen - Druckbeaufschlagte Rohrbelüfter in Durchflussform DN 15 bis DN 50 - Familie L, Typ A und Typ B
Dieses Dokument legt Folgendes fest:
a) Anwendungsbereich;
b) Anforderungen an druckbeaufschlagte Rohrbelüfter;
c) maßliche, physikalisch-chemische Eigenschaften und Eigenschaften allgemeiner hydraulischer, mechanischer und akustischer Art von druckbeaufschlagten Rohrbelüftern DN 15 bis DN 50;
d) Prüfverfahren und Anforderungen, um diese Eigenschaften nachzuweisen;
e) Kennzeichnung;
f) Geräuschverhalten.
Diese Norm legt die Eigenschaften von druckbeaufschlagten Rohrbelüftern in den Nennweiten DN 15 bis DN 50 fest, die für den Gebrauch in Trinkwassersystemen bei Drücken bis 1 MPa (10 bar) und Temperaturen bis 65 °C und für 1 h bei 90 °C geeignet sind.
Dispositifs de protection contre la pollution de l'eau potable par retour - Clapet d'entrée d'air sous pression DN 15 a DN 50 - Famille L, type A et type B
La présente Norme européenne spécifie :
3 le domaine d'application ;
3 les exigences pour les clapets d'entrée d'air sous pression avec corps non plastifiés ;
3 les caractéristiques dimensionnelles, physico-chimiques, de conception, hydrauliques, mécaniques et acoustiques de clapet d'entrée d'air sous pression DN 15 et DN 50 inclus ;
3 la famille L, type A ;
3 la famille L, type B ;
3 la méthode d'essai et les exigences pour vérifier leurs caractéristiques. Pour les dispositifs combinés ) seul les essais antipollution sont a effectuer ;
3 le marquage et la présentation a la livraison ;
3 les caractéristiques acoustiques.
3 la présente norme spécifie les caractéristiques de clapets d'entrée d'air sous pression de diametre nominal DN 15 jusqu'a y compris DN 50 qui sont appropriés pour l'utilisation dans des réseaux d'eau potable a des pressions jusqu'a y compris 1 000 kPa (10 bar) et des températures jusqu'a y compris 65 °C et durant 1 h a 90 °C.
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka - Tlačni zračniki s premerom DN 15 do DN 50 – Družina L, tipa A in B
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.%Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rückfließen - Druckbeaufschlagte Rohrbelüfter in Durchflussform DN 15 bis DN 50 - Familie L, Typ A und Typ BDispositifs de protection contre la pollution de l'eau potable par retour - Clapet d'entrée d'air sous pression DN 15 a DN 50 - Famille L, type A et type BDevices to prevent pollution by backflow of potable water - Presssurised air inlet valves DN 15 to DN 50 - Family L, type A and type B91.140.60Sistemi za oskrbo z vodoWater supply systems23.060.01Ventili na splošnoValves in general13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 14455:2005SIST EN 14455:2005en01-september-2005SIST EN 14455:2005SLOVENSKI
STANDARD
SIST EN 14455:2005
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14455May 2005ICS 13.060.20; 23.060.01English versionDevices to prevent pollution by backflow of potable water -Presssurised air inlet valves DN 15 to DN 50 - Family L, type Aand type BDispositifs de protection contre la pollution de l'eau potablepar retour - Clapet d'entrée d'air sous pression DN 15 à DN50 - Famille L, type A et type BSicherungseinrichtungen zum Schutz des Trinkwassersgegen Verschmutzung durch Rückfließen -Druckbeaufschlagte Rohrbelüfter in Durchflussform DN 15bis DN 50 - Familie L, Typ A und Typ BThis European Standard was approved by CEN on 24 December 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14455:2005: ESIST EN 14455:2005
EN 14455:2005 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.6 4 Nominal size.6 5 Designation.6 6 Marking and technical documents.7 7 Symbolisation.7 8 General design characteristics.9 9 Physico-chemical characteristics.10 10 Characteristics and tests.11 11 Acoustic characteristics.20 Annex A (normative) Sampling and test sequence.22
SIST EN 14455:2005
EN 14455:2005 (E) 3 Foreword This document (EN 14455:2005) has been prepared by Technical Committee CEN/TC 164 “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 November 2005, and conflicting national standards shall be withdrawn at the latest by November 2005. This document has been developed with reference to EN 1717 "Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow". According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 14455:2005
EN 14455:2005 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this document: a) this document provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regu-lations concerning the use and/or the characteristics of this product remain in force. SIST EN 14455:2005
EN 14455:2005 (E) 5 1 Scope This document specifies: a) field of application; b) requirements for pressurised air inlet valves; c) dimensional and the physico-chemical properties and the properties of general hydraulic, mechanical and acoustic design of pressurised air inlet valves DN 15 to DN 50; d) test procedure and requirements for verifying these properties; e) marking and presentation; f) acoustics. This document specifies the characteristics of pressurised air inlet valves DN 15 to DN 50 that are suitable for use in drinking water systems at pressures up to 1 MPa (10 bar) and temperatures up to 65 °C and for 1 h at 90 °C. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refer-ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 806-1:2000, Specifications for installations inside buildings conveying water for human consumption — Part 1: General EN 1717:2000, Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow EN 13959, Anti-pollution check valves — DN 6 to DN 250 inclusive family E, type A, B, C and D EN°ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions, tolerances and designation (ISO 228-1:2000) EN ISO 3822-1, Acoustics — Laboratory tests on noise emission from appliances and equipment used in water supply installations — Part 1: Method of measurement (ISO 3822-1:1999) EN ISO 3822-3, Acoustics — Laboratory tests on noise emission from appliances and equipment used in water supply installations — Part 3: Mounting and operating conditions for in-line valves and appliances (ISO 3822-3:1997) EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 1: General principles and requirements (ISO 5167-1:2003) EN ISO 6509, Corrosion of metals and alloys — Determination of dezincification resistance of brass (ISO 6509:1981) ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Designation, dimensions and tolerances ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests SIST EN 14455:2005
EN 14455:2005 (E) 6 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1717, EN 806-1 and the following apply. 3.1 pressurised air inlet valve "LA" valve fitted with one or more air inlet ports which are normally closed, when the water is above or equal to the atmospheric pressure in the valve. The valve opens to admit air if there is a subatmospheric pressure at the water inlet, and closes to be watertight when the flow of water is resumed at normal pressure NOTE LA protects against back siphonage. 3.2 pressurised air inlet valve combined with a check-valve located downstream "LB" valve LA with integrated in-line check valve of family E, type EB, located downstream. For the purpose of this document, “pressurised air inlet valve(s)” is (are) hereafter referred to as “device(s)” 4 Nominal size The nominal size of the device shall correspond to the denomination of thread according to Table 1 and ISO 7-1. Table 1 — Nominal size vs thread size DN 15 20 25 32 40 50 Thread size ½ ¾ 1 1 ¼ 1 ½ 2
5 Designation The devices are designated by: a) name; b) reference to this document (EN 14455); c) family, type; d) DN; e) body material; f) acoustic group (≤
DN 32 only).
Example of designation Pressurised air inlet valve, EN 14455, family L, type A, DN 20, gun metal, I SIST EN 14455:2005
EN 14455:2005 (E) 7 6 Marking and technical documents 6.1 General In countries where the use of products made of dezincification resistant materials is not required, the dezincification resistant products according to EN ISO 6509, as well as the products which do not contain zinc, may be marked "DR". In countries where the use of dezincification resistant materials is required, the dezincification resistant products, as well as the products which do not contain zinc, shall be marked "DR". 6.2 Marking The devices shall be marked permanently and visibly on the body or on a fixed data plate. This information shall be on the upper side or on each lateral side of the device. The indications shall be indelible and obtained by moulding, engraving or similar procedures. The marking shall indicate: a) name, manufacturer's brand or logo; b) arrow indicating normal direction of flow; c) nominal size (DN); d) acoustic group (≤ DN 32 only); e) letters indicating family and type of device. Marking a), b), c), and e) are obligatory. In case there is no marking for d), the device shall be considered as not classified acoustically. 6.3 Technical documents Each package and/or each batch and/or each catalogue of the supplier/manufacturer shall contain technical product information which shall be written in a commonly spoken language of the country in which the product is sold. It shall provide the following information: a) designation and purpose of the product; b) installation instructions; c) minimum installation height; d) (brand) name and address of supplier/manufacturer; e) instructions for maintenance, if any; f) spare part list, if any. 7 Symbolisation The graphic representation of the devices is according to EN 1717 (see Figure 1): SIST EN 14455:2005
EN 14455:2005 (E) 8
Figure 1 — Graphic symbol SIST EN 14455:2005
EN 14455:2005 (E) 9 8 General design characteristics 8.1 Design principle A typical design principle of LA and LB is given in Figure 2. Dimensions in millimetres
a) LA: Flow condition and zero condition b) LA: Back siphonage condition
c) LB: Flow condition d) LB: Zero flow condition
e) LB: Back siphonage condition Key 1 Water flow 2 Air Figure 2 — Design principle SIST EN 14455:2005
EN 14455:2005 (E) 10 8.2 Connections Connections shall comply with EN ISO 228-1 or ISO 7-1. 8.3 Air inlets Air inlets shall be shrouded and designed to ensure that they cannot easily be blocked by deposits. Dimensions of external air inlets shall be minimum 4 mm (see Figure 2). 8.4 Check valve The check valve of an LB has to comply with all requirements of EN 13959. 9 Physico-chemical characteristics 9.1 Materials The materials and the coatings used, liable to come normally or accidentally in contact with potable water, shall satisfy the EU regulations concerning water quality. The materials and the coatings shall be: a) corrosion resistant in accordance with ISO 9227; b) prone to the least scaling possible; c) in conformity with the associated standards and regulations; d) compatible am
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.