EN 14451:2020
(Main)Devices to prevent pollution by backflow of potable water - In-line anti-vacuum valves DN 10 to DN 50 inclusive - Family D, type A
Devices to prevent pollution by backflow of potable water - In-line anti-vacuum valves DN 10 to DN 50 inclusive - Family D, type A
This document specifies the field of application, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical, and the acoustic characteristics of in-line anti vacuum valve family D Type A.
This document covers in-line anti vacuum valve family D Type A, intended to prevent pollution of potable water by backflow, caused by backsiphoning only.
It is applicable to in-line anti vacuum valve in denominations DN 10 up to DN 50.
It covers in-line anti vacuum valve of PN 10 that are capable of working without modification or adjustment:
- at any pressure, up to 1 MPa (10 bar);
- with any pressure variation, up to 1 MPa (10 bar);
- in permanent duty at a limited temperature of 65 °C and for maximum 1 h at 90 °C.
It specifies also the test methods and requirements for verifying their characteristics, the marking and the presentation at delivery.
Sicherungseinrichtungen zur Verhütung von Trinkwasserverunreinigung durch Rückfließen - Rohrleitungsbelüfter DN 10 bis einschließlich DN 50 - Familie D, Typ A
Dieses Dokument legt den Anwendungsbereich, die maßlichen, physikalisch-chemischen, Auslegungs-, hydraulischen, mechanischen und akustischen Eigenschaften der Rohrleitungsbelüfter Familie D, Typ A fest.
Dieses Dokument gilt ausschließlich für Rohrleitungsbelüfter Familie D, Typ A, die zur Verhütung von Trinkwasserverunreinigungen durch Rückfließen, verursacht durch Rücksaugen, vorgesehen sind.
Es gilt für Rohrleitungsbelüfter der Bezeichnungen DN 10 bis DN 50.
Es behandelt Rohrleitungsbelüfter mit PN 10, die ohne Abänderung oder Nachstellung funktionsfähig sind:
- bei Druckwerten, bis 1 MPa (10 bar);
- bei Druckschwankungen, bis 1 MPa (10 bar);
- im Dauerbetrieb bei einer Grenztemperatur von 65 °C und für maximal 1 h bei 90 °C.
Es legt zudem die Prüfverfahren und Anforderungen zur Verifizierung ihrer Eigenschaften, der Kennzeichnung und der Bereitstellung bei der Auslieferung fest.
Dispositifs de protection contre la pollution de l'eau potable par retour - Soupape anti-vide en ligne DN 10 à DN 50 inclus - Famille D, type A
Le présent document spécifie le domaine d’application ainsi que les caractéristiques dimensionnelles, physico-chimiques, de conception, hydrauliques, mécaniques et acoustiques des soupapes anti-vide en ligne de la famille D, type A.
Le présent document couvre uniquement les soupapes anti-vide en ligne de la famille D, type A, destinées à éviter la pollution de l’eau potable par retour, provoquée par siphonnage.
Il s’applique aux soupapes anti-vide en ligne de dénomination DN 10 à DN 50.
Il couvre les soupapes anti-vide en ligne de PN 10 qui, sans modification ni ajustement, peuvent fonctionner :
- à n’importe quelle pression, jusqu’à 1 MPa (10 bar) ;
- sous n’importe quelle variation de pression, jusqu’à 1 MPa (10 bar) ;
- de manière ininterrompue jusqu’à une température limite de 65 °C, et pendant 1 h, au maximum, à 90 °C.
Il spécifie également les méthodes d’essai et les exigences permettant de contrôler leurs caractéristiques, le marquage et la présentation à la livraison.
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka - Ventili za preprečevanje podtlaka DN 10 do DN 50 - Družina D, tip A
General Information
Relations
Overview
EN 14451:2020 specifies requirements for in-line anti-vacuum valves (Family D, Type A) used to prevent pollution of potable water by backflow caused by backsiphoning. The standard applies to valves with nominal sizes DN 10 to DN 50 and pressure rating PN 10, designed to operate without adjustment at pressures up to 1 MPa (10 bar) and temperatures up to 65 °C (with a short-term limit of 90 °C for up to 1 hour). EN 14451:2020 covers design, materials, hydraulic and mechanical performance, acoustic behaviour, marking and delivery documentation, and the specified test methods to verify conformity.
Key Topics and Requirements
- Field of application: Protects potable water against backsiphoning only (no protection against backpressure).
- Size and pressure: Applicable to DN 10–DN 50; PN 10, serviceable up to 1 MPa.
- Temperature: Permanent duty up to 65 °C; maximum 1 hour at 90 °C.
- Design & materials: Specifies general design principles, connections (threads per EN 10226-1 / EN ISO 228-1), air inlet function and dezincification resistance marking (products complying with EN ISO 6509-1 may be marked “DR”).
- Performance tests: Defines a test sequence including visual verification, tightness testing, flow rate/pressure loss, bending moment/mechanical strength, endurance cycles, vacuum testing, and acoustic testing (see staged tests in the standard).
- Acoustics: Acoustic measurement and classification for DN ≤ 32 (groups I, II or nc) following EN ISO 3822 series.
- Marking & designation: Permanent marking on casing or plate; designation includes reference to EN 14451, family/type, DN, end connection, acoustic group (if applicable) and body material.
- Documentation: Technical documents and presentation at delivery requirements are specified.
Applications and Users
EN 14451:2020 is intended for:
- Manufacturers and designers of in-line anti-vacuum valves for drinking water systems.
- Test laboratories conducting type and production tests to verify hydraulic, mechanical and acoustic performance.
- Specifiers and procurement teams (water utilities, building services engineers) requiring compliant anti-vacuum valves for service connections, meter installations and inline protection against backsiphoning.
- Installers and maintenance personnel who need to select and identify correct valves by DN, thread type and acoustic classification. Note: The standard does NOT cover devices for protection against backpressure; selection must reflect site-specific backflow risk.
Related Standards
- EN 1717 - Protection against pollution of potable water by backflow (general requirements)
- EN 10226-1 / EN 10226-2, EN ISO 228-1 - Thread standards for connections
- EN ISO 3822-1 / -3 - Acoustic test methods for in-line valves
- EN ISO 5167-1 - Flow measurement principles
- EN ISO 6509-1 - Dezincification resistance (DR marking)
Keywords: EN 14451:2020, in-line anti-vacuum valve, anti-vacuum valve DN 10–DN 50, backflow prevention, potable water, PN 10, backsiphoning, acoustic classification.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2020
Nadomešča:
SIST EN 14451:2005
Naprave za varovanje pred onesnaženjem pitne vode zaradi povratnega toka -
Ventili za preprečevanje podtlaka DN 10 do DN 50 - Družina D, tip A
Devices to prevent pollution by backflow of potable water - In-line anti-vacuum valves DN
10 to DN 50 inclusive - Family D, type A
Sicherungseinrichtungen zur Verhütung von Trinkwasserverunreinigung durch
Rückfließen - Rohrleitungsbelüfter DN 10 bis einschließlich DN 50 - Familie D, Typ A
Dispositifs de protection contre la pollution de l'eau potable par retour - Soupape anti-
vide en ligne DN 10 à DN 50 inclus - Famille D, type A
Ta slovenski standard je istoveten z: EN 14451:2020
ICS:
13.060.20 Pitna voda Drinking water
23.060.50 Blokirni ventili Check valves
91.140.60 Sistemi za oskrbo z vodo Water supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 14451
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2020
EUROPÄISCHE NORM
ICS 13.060.20; 23.060.50 Supersedes EN 14451:2005
English Version
Devices to prevent pollution by backflow of potable water
- In-line anti-vacuum valves DN 10 to DN 50 inclusive -
Family D, type A
Dispositifs de protection contre la pollution de l'eau Sicherungseinrichtungen zur Verhütung von
potable par retour - Soupape anti-vide en ligne DN 10 à Trinkwasserverunreinigung durch Rückfließen -
DN 50 inclus - Famille D, type A Rohrleitungsbelüfter DN 10 bis einschließlich DN 50 -
Familie D, Typ A
This European Standard was approved by CEN on 24 May 2020.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14451:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Nominal size . 7
5 Designation. 7
6 Marking and technical documents . 8
6.1 General . 8
6.2 Marking . 8
6.3 Technical documents . 8
7 Symbolization . 9
8 General design characteristics . 9
8.1 Design principle . 9
8.2 Connections . 10
8.3 Air inlets . 10
9 Materials and surface finishes . 10
9.1 General . 10
9.2 Materials . 10
9.3 Corrosion resistance . 10
10 Characteristics and tests . 10
10.1 General . 10
10.2 Test sequence . 11
10.3 Visual verification (Stage 1) . 11
10.4 Tightness test (Stage 2) . 11
10.4.1 Test equipment . 11
10.4.2 Test . 12
10.4.3 Requirement . 12
10.5 Flow rate/pressure loss (Stage 3) . 13
10.5.1 Test equipment . 13
10.5.2 Test . 14
10.5.3 Requirement . 14
10.6 Bending moment, mechanical strength of body and leak tightness (Stage 4) . 14
10.6.1 General . 14
10.6.2 Test equipment . 15
10.6.3 Test . 15
10.6.4 Requirements . 16
10.7 Endurance test (Stage 6) . 16
10.7.1 Test procedure 1 . 16
10.7.2 Test procedure 2 . 17
10.7.3 Test procedure 3 . 19
10.8 Vacuum test (Stage 7) . 20
10.8.1 Vacuum test equipment . 20
10.8.2 Procedure . 21
10.8.3 Requirement . 21
11 Acoustic characteristics . 21
11.1 General . 21
11.2 Procedure . 21
11.2.1 Mounting and operating conditions. 21
11.2.2 Test methods . 21
11.3 Test criteria . 21
11.3.1 Expression of the results . 21
11.3.2 Noise classification . 21
Annex A (informative) Sampling and test sequence . 22
European foreword
This document (EN 14451:2020) has been prepared by Technical Committee CEN/TC 164 “Water
supply”, the secretariat of which is held by AFNOR.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by December 2020, and conflicting national standards shall be
withdrawn at the latest by December 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 14451:2005.
In comparison with the previous edition, the following changes have been made:
a) title changed;
b) scope of application revised;
c) Clause 2 updated;
d) nominal size range in Clause 4 restricted;
e) Clause 9 adapted.
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 organisations of the
following countries are bound to implement this document: Austria, Belgium, Bulgaria, Croatia, Cyprus,
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
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) note 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 document specifies the field of application, the dimensional, the physico-chemical, the design, the
hydraulic, the mechanical, and the acoustic characteristics of in-line anti vacuum valve family D Type A.
This document covers in-line anti vacuum valve family D Type A, intended to prevent pollution of
potable water by backflow, caused by backsiphoning only.
It is applicable to in-line anti vacuum valve in denominations DN 10 up to DN 50.
It covers in-line anti vacuum valve of PN 10 that are capable of working without modification or
adjustment:
— at any pressure, up to 1 MPa (10 bar);
— with any pressure variation, up to 1 MPa (10 bar);
— in permanent duty at a limited temperature of 65 °C and for maximum 1 h at 90 °C.
It specifies also the test methods and requirements for verifying their characteristics, the marking and
the presentation at delivery.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 248, Sanitary tapware - General specification for electrodeposited coatings of Ni-Cr
EN 1717, Protection against pollution of potable water in water installations and general requirements of
devices to prevent pollution by backflow
EN 10226-1, Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external
threads and parallel internal threads - Dimensions, tolerances and designation
EN 10226-2, Pipe threads where pressure tight joints are made on the threads - Part 2: Taper external
threads and taper internal threads - Dimensions, tolerances and designation
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)
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)
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)
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)
EN ISO 6509-1, Corrosion of metals and alloys - Determination of dezincification resistance of copper
alloys with zinc - Part 1: Test method (ISO 6509-1)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
in-line anti-vacuum valve
mechanical device with an air inlet which is closed when water flows through it at or above
atmospheric pressure, but which opens to admit air if there is a subatmospheric pressure at the water
inlet or when the flow stops, and closes so as to be watertight when the flow of water is resumed at
normal pressure
Note 1 to entry: In case of subatmospheric pressure the obturator should admit air to the downstream
pipework as well as throttling the inlet waterway of the device.
Note 2 to entry: It ensures no protection
...
Frequently Asked Questions
EN 14451:2020 is a standard published by the European Committee for Standardization (CEN). Its full title is "Devices to prevent pollution by backflow of potable water - In-line anti-vacuum valves DN 10 to DN 50 inclusive - Family D, type A". This standard covers: This document specifies the field of application, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical, and the acoustic characteristics of in-line anti vacuum valve family D Type A. This document covers in-line anti vacuum valve family D Type A, intended to prevent pollution of potable water by backflow, caused by backsiphoning only. It is applicable to in-line anti vacuum valve in denominations DN 10 up to DN 50. It covers in-line anti vacuum valve of PN 10 that are capable of working without modification or adjustment: - at any pressure, up to 1 MPa (10 bar); - with any pressure variation, up to 1 MPa (10 bar); - in permanent duty at a limited temperature of 65 °C and for maximum 1 h at 90 °C. It specifies also the test methods and requirements for verifying their characteristics, the marking and the presentation at delivery.
This document specifies the field of application, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical, and the acoustic characteristics of in-line anti vacuum valve family D Type A. This document covers in-line anti vacuum valve family D Type A, intended to prevent pollution of potable water by backflow, caused by backsiphoning only. It is applicable to in-line anti vacuum valve in denominations DN 10 up to DN 50. It covers in-line anti vacuum valve of PN 10 that are capable of working without modification or adjustment: - at any pressure, up to 1 MPa (10 bar); - with any pressure variation, up to 1 MPa (10 bar); - in permanent duty at a limited temperature of 65 °C and for maximum 1 h at 90 °C. It specifies also the test methods and requirements for verifying their characteristics, the marking and the presentation at delivery.
EN 14451:2020 is classified under the following ICS (International Classification for Standards) categories: 13.060.20 - Drinking water; 23.060.50 - Check valves. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 14451:2020 has the following relationships with other standards: It is inter standard links to EN 14451:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 14451:2020 is associated with the following European legislation: EU Directives/Regulations: 305/2011. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN 14451:2020 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
The standard EN 14451:2020 provides a comprehensive framework specifically designed for in-line anti-vacuum valves within the family D, type A category. This document outlines the critical characteristics required to ensure these devices effectively prevent pollution by backflow of potable water, specifically addressing the issue caused by backsiphoning. One of the significant strengths of this standard is its thorough scope, which encompasses various important aspects including dimensional specifications, physico-chemical properties, and both hydraulic and mechanical characteristics. By detailing the applicable ranges from DN 10 to DN 50, the standard gains relevance in diverse plumbing and water management systems. Additionally, it lays down stringent requirements for the operational capabilities of these valves, ensuring they can function effectively under various pressures and temperature conditions, thus guaranteeing reliability and safety in potable water applications. Furthermore, EN 14451:2020 includes specific test methods for verifying the performance and durability of the in-line anti-vacuum valves, which is crucial for manufacturers and users alike. The detailed provisions on marking and presentation ensure that these products meet safety and quality standards throughout the distribution and installation processes. Overall, the standard plays an essential role in providing guidelines that not only meet regulatory compliance but also promote public health by minimizing the risk of contamination of drinking water. Its focus on practical applications and testing methods solidifies its relevance in the industry, ensuring that in-line anti-vacuum valves are not only effective but also reliable and safe for use in various water supply systems.
Die Norm EN 14451:2020 spezifiziert die Anwendung, Dimensionierung sowie die physikalisch-chemischen, gestalterischen, hydraulischen, mechanischen und akustischen Eigenschaften von In-Line-Anti-Vakuumventilen der Familie D, Typ A. Diese Norm ist von großer Bedeutung, da sie sich auf die Verhinderung von Verschmutzungen des Trinkwassers durch Rückfluss aufgrund von Ansaugung konzentriert, was ein wichtiges Anliegen für die Trinkwassersicherheit darstellt. Ein herausragendes Merkmal dieser Norm ist der klare Anwendungsbereich, der die In-Line-Anti-Vakuumventile mit Nenngrößen von DN 10 bis DN 50 umfasst. Dies ermöglicht eine breitere Anwendung in unterschiedlichen Installationen und sorgt dafür, dass eine Vielzahl von Druckbedingungen abgedeckt wird. Besonders hervorzuheben ist, dass die Ventile für einen Druck von bis zu 1 MPa (10 bar) ohne Modifikationen oder Anpassungen funktionsfähig sind, was die Einsatzmöglichkeiten erheblich erweitert und die Handhabung vereinfacht. Ein weiterer wichtiger Aspekt der Norm sind die definierten Anforderungen und Prüfmethoden zur Überprüfung der Eigenschaften der Ventile. Dies garantiert, dass die in dieser Norm eingeführten In-Line-Anti-Vakuumventile zuverlässig arbeiten, insbesondere unter den im Dokument festgelegten Bedingungen, wie zum Beispiel einer Dauerbetriebstemperatur von maximal 65 °C und einer kurzfristigen maximalen Temperatur von 90 °C. Die präzisen Vorgaben zu Kennzeichnung und Präsentation bei der Lieferung fördern zusätzlich die Transparenz und Nachverfolgbarkeit bei der Verwendung dieser Sicherheitseinrichtungen. Die Relevanz der EN 14451:2020 ist unbestreitbar, da sie nicht nur den Schutz des Trinkwassers garantiert, sondern auch trägt, ein hohes Maß an Vertrauen in die verwendeten Produkte zu schaffen. Durch ihre umfassenden Merkmale und Anforderungen ist diese Norm ein unverzichtbares Werkzeug für Hersteller, Installateure und Prüfinstitutionen, die sich mit Trinkwassersicherheit und der Vermeidung von Rückflussverunreinigungen befassen.
SIST EN 14451:2020は、飲料水の逆流による汚染を防ぐためのインラインアンチバキュームバルブに関する基準であり、DN 10からDN 50までのファミリーD、タイプAに焦点を当てています。この標準文書は、適用範囲を明確に定義し、バルブの寸法、物理化学的特性、設計、 hydraulics、機械的および音響特性などを詳細に規定しています。 この基準の強みは、飲料水のバックサイフォンによる汚染を効果的に防止するように設計されていることです。DN 10からDN 50の範囲内で、圧力が1 MPa（10 bar）までの条件下で問題なく使用できることが強調されており、圧力変動にも対応可能です。さらに、最大温度65°Cでの恒常動作が保障されており、最高90°Cまで1時間の耐久性を持つことも重要な特性です。 また、特性の検証方法や試験要件も詳しく規定されており、バルブのマーキングおよび納品時の提示方法についても記載されています。これは、製造者や使用者が規範に従って物品を管理できるようになるため、実務上非常に有益です。 全体として、SIST EN 14451:2020は飲料水の安全性を高めるために非常に有用であり、特に汚染を防ぐための技術的な指針を提供しています。この標準は、関連する業界において、より安全で効率的なシステムを構築するための基盤となるでしょう。
표준 SIST EN 14451:2020은 음용수의 오염 방지를 위한 기기 중 인라인 역압 밸브(DN 10에서 DN 50까지 포함)인 패밀리 D, 타입 A에 대한 내용을 상세히 규명하고 있습니다. 이 문서는 밸브의 적용 분야, 치수, 물리화학적 성질, 설계, 유압, 기계적 특성 및 음향 특성을 명확히 정의하고 있어, 관련 업계에 필수적인 기준을 제공합니다. 가장 큰 강점 중 하나는 이 표준이 역압으로 인한 음용수의 오염을 방지하기 위한 목적으로 설계된 인라인 역압 밸브의 성능을 명확히 규명하고 있다는 점입니다. DN 10부터 DN 50까지의 다양한 크기의 밸브에 대해 적용 가능하다는 점에서 매우 유연한 사용이 가능하며, 이 표준은 특히 1MPa(10 bar) 압력에서 작동할 수 있는 밸브를 위한 요구 사항을 제시합니다. 이는 여러 상황에서의 신뢰성을 보장하며, 다양한 압력 변화에서도 안정적인 성능을 나타내도록 설계되어 있습니다. 또한, 본 표준은 65°C의 온도와 최대 90°C에서 1시간의 제한된 시간 동안 지속적으로 작동할 수 있는 능력에 대해서도 명시하고 있습니다. 이러한 특성은 인라인 역압 밸브가 다양한 환경 조건에서도 견디며 제 기능을 할 수 있도록 보장합니다. 마지막으로, 이 문서는 밸브의 특성을 검증하기 위한 시험 방법 및 요구 사항, 그리고 배송 시의 마킹 및 제시 방식에 대해서도 명확한 지침을 제공합니다. 이러한 포괄적인 접근은 제조사와 소비자 모두에게 명확한 기준을 제시하여 품질 보증 및 안전성을 향상시키는 데 기여합니다. EN 14451:2020 표준은 음용수 보호에 있어 매우 중요한 역할을 하는 문서로, 관련 분야의 전문가들에게 큰 가치를 제공합니다.
La norme EN 14451:2020 spécifie clairement le champ d'application des dispositifs de prévention de la pollution de l'eau potable par reflux, en se concentrant sur les vannes anti-vide en ligne de la famille D, type A, DN 10 à DN 50 inclus. Cette standardisation aborde les aspects dimensionnels, physico-chimiques, de conception, hydrauliques, mécaniques et acoustiques des vannes, assurant ainsi une compréhension exhaustive de leurs caractéristiques et de leur fonctionnement. Un des points forts de cette norme est sa capacité à couvrir un large éventail d'applications grâce à sa conception pour des vannes anti-vide pouvant opérer à des pressions allant jusqu'à 1 MPa (10 bar). Cela permet aux utilisateurs de s'assurer que les dispositifs peuvent fonctionner efficacement sous diverses conditions de pression sans nécessiter de modifications ou d'ajustements, ce qui témoigne de leur robustesse et de leur fiabilité. En outre, la norme définit des limites de température précises pour les vannes en service continu, jusqu'à 65 °C et un maximum de 90 °C pendant 1 heure. Cela garantit que les dispositifs sont adaptés à une utilisation dans des environnements variés, où les fluctuations de température peuvent être un facteur. Les méthodes d'essai et les exigences pour la vérification des caractéristiques des vannes sont également spécifiées, ce qui renforce la confiance des utilisateurs dans la performance des produits. La norme EN 14451:2020 intègre donc des directives claires concernant le marquage et la présentation lors de la livraison, assurant que les dispositifs respectent les standards de qualité requis. En somme, la norme EN 14451:2020 représente une avancée significative dans la prévention de la pollution de l'eau potable, offrant une référence essentielle pour les fabricants, les ingénieurs et les régulateurs afin de garantir la sécurité de l'approvisionnement en eau. Son applicabilité étendue, ses exigences rigoureuses et ses spécifications claires soulignent sa pertinence dans le domaine de la gestion de l'eau et de la santé publique.
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...