EN 1111:2017/prA1
(Amendment)Sanitary tapware - Thermostatic mixing valves (PN 10) - General technical specification
Sanitary tapware - Thermostatic mixing valves (PN 10) - General technical specification
This European Standard specifies general construction, performance and material requirements for PN 10 thermostatic mixing valves (TMV) and includes test methods for the verification of mixed water temperature performance at the point of use below 45 °C. This does not exclude the selection of higher temperatures where available. When these devices are used to provide anti-scald protection for children, elderly and disabled persons the mixed water temperature needs to be set at a suitable bathing temperature (body temperature approximately 38 °C) as children are at risk to scalding at lower temperatures than adults. This does not obviate the need for supervision of young children during bathing.
It applies to valves intended for use on sanitary appliances in kitchens, washrooms (incl. all rooms with sanitary tapware, e.g. toilets and cloakrooms) and bath rooms operating under the conditions specified in Table 1.
This standard allows TMVs to supply a single outlet or a small number of outlets in a "domestic" application (e.g. one valve controlling a shower, bath, basin and/or bidet), excluding valves specifically designed for supplying a large number of outlets (i.e. for institutional use).
The tests described are type tests (laboratory tests) and not quality control tests carried out during manufacture.
Table 1 - Conditions of use
Sanitärarmaturen - Thermostatische Mischer (PN 10) - Allgemeine technische Spezifikation
Robinetterie sanitaire - Mitigeurs thermostatiques (PN 10) - Spécifications techniques générales
No scope available
Sanitarne armature - Termostatski mešalni ventili (PN 10) - Splošna tehnična specifikacija
General Information
- Status
- Not Published
- Publication Date
- 31-Jul-2022
- Withdrawal Date
- 31-Jan-2023
- Technical Committee
- CEN/TC 164 - Water supply
- Drafting Committee
- CEN/TC 164/WG 8 - Sanitary tapware
- Current Stage
- 4098 - Decision to abandon - Enquiry
- Start Date
- 30-Sep-2022
- Completion Date
- 14-Apr-2025
Relations
- Effective Date
- 26-Jun-2019
Overview
EN 1111:2017/prA1 - issued by CEN - is a European technical specification for sanitary tapware thermostatic mixing valves (PN 10). It defines general construction, performance and material requirements for PN 10 thermostatic mixing valves (TMVs) and sets out laboratory type test methods to verify mixed water temperature performance at the point of use (below 45 °C). The amendment prA1 updates test procedures, timing and acceptance criteria to ensure predictable anti-scald protection and reliable temperature control in domestic installations.
Key Topics and Requirements
- Scope: Applies to TMVs for sanitary appliances in kitchens, washrooms and bathrooms for domestic use (single valve supplying one or a small number of outlets). Excludes valves intended to serve large institutional outlet groups.
- Temperature limits: Tests verify mixed water temperature below 45 °C; for bathing protection of children/elderly/disabled the standard highlights a suitable setpoint near body temperature (~38 °C).
- Performance testing: Type tests (laboratory, not factory QC) cover:
- Temperature control accuracy and stability under setpoint changes.
- Response to flow-rate reduction (new requirement: reduce to 45–55% of initial flow).
- Response to supply pressure and temperature variations (specified recovery times and maximum deviations).
- Transient behavior limits (maximum allowed deviations, oscillation amplitudes and timing; many timings revised to maximum 30 s for stabilization).
- Construction and materials: General requirements to ensure durability and safe operation under PN 10 conditions (as detailed in the standard).
- Referenced requirements: Aerators or water-saving accessories are subject to EN 246 dimensions where applicable; if non‑compliant, flow and acoustic tests are performed on the product as delivered.
- Amendment details: prA1 modifies multiple subclauses (13.x, 16.8.3.1) - e.g., revised measurement procedures, added informative figures, and relaxed dimensional test-rig constraints while keeping specified supply pressures.
Applications and Users
- Manufacturers of thermostatic mixing valves (TMV) - for product design, testing and product declarations.
- Independent test laboratories - to perform type tests and verify compliance with EN 1111 test methods and timing.
- Product specifiers, plumbing engineers, architects and consultants - when selecting TMVs for domestic washrooms, baths and showers.
- Installers, facility managers and regulators - for understanding performance expectations, anti-scald guidance and compliance context.
Related Standards
- EN 246 (aerator/flow dimensions) - referenced for flow and acoustic testing.
- CEN/TC 164 “Water supply” - technical committee responsible for the document.
Keywords: EN 1111, thermostatic mixing valves, TMV, PN 10, anti-scald, mixed water temperature, sanitary tapware, CEN, type tests.
Frequently Asked Questions
EN 1111:2017/prA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "Sanitary tapware - Thermostatic mixing valves (PN 10) - General technical specification". This standard covers: This European Standard specifies general construction, performance and material requirements for PN 10 thermostatic mixing valves (TMV) and includes test methods for the verification of mixed water temperature performance at the point of use below 45 °C. This does not exclude the selection of higher temperatures where available. When these devices are used to provide anti-scald protection for children, elderly and disabled persons the mixed water temperature needs to be set at a suitable bathing temperature (body temperature approximately 38 °C) as children are at risk to scalding at lower temperatures than adults. This does not obviate the need for supervision of young children during bathing. It applies to valves intended for use on sanitary appliances in kitchens, washrooms (incl. all rooms with sanitary tapware, e.g. toilets and cloakrooms) and bath rooms operating under the conditions specified in Table 1. This standard allows TMVs to supply a single outlet or a small number of outlets in a "domestic" application (e.g. one valve controlling a shower, bath, basin and/or bidet), excluding valves specifically designed for supplying a large number of outlets (i.e. for institutional use). The tests described are type tests (laboratory tests) and not quality control tests carried out during manufacture. Table 1 - Conditions of use
This European Standard specifies general construction, performance and material requirements for PN 10 thermostatic mixing valves (TMV) and includes test methods for the verification of mixed water temperature performance at the point of use below 45 °C. This does not exclude the selection of higher temperatures where available. When these devices are used to provide anti-scald protection for children, elderly and disabled persons the mixed water temperature needs to be set at a suitable bathing temperature (body temperature approximately 38 °C) as children are at risk to scalding at lower temperatures than adults. This does not obviate the need for supervision of young children during bathing. It applies to valves intended for use on sanitary appliances in kitchens, washrooms (incl. all rooms with sanitary tapware, e.g. toilets and cloakrooms) and bath rooms operating under the conditions specified in Table 1. This standard allows TMVs to supply a single outlet or a small number of outlets in a "domestic" application (e.g. one valve controlling a shower, bath, basin and/or bidet), excluding valves specifically designed for supplying a large number of outlets (i.e. for institutional use). The tests described are type tests (laboratory tests) and not quality control tests carried out during manufacture. Table 1 - Conditions of use
EN 1111:2017/prA1 is classified under the following ICS (International Classification for Standards) categories: 91.140.70 - Sanitary installations. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1111:2017/prA1 has the following relationships with other standards: It is inter standard links to EN 1111:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2021
Sanitarne armature - Termostatski mešalni ventili (PN 10) - Splošna tehnična
specifikacija
Sanitary tapware - Thermostatic mixing valves (PN 10) - General technical specification
Sanitärarmaturen - Thermostatische Mischer (PN 10) - Allgemeine technische
Spezifikation
Robinetterie sanitaire - Mitigeurs thermostatiques (PN 10) - Spécifications techniques
générales
Ta slovenski standard je istoveten z: EN 1111:2017/prA1
ICS:
91.140.70 Sanitarne naprave Sanitary installations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
EN 1111:2017
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
April 2021
ICS 91.140.70
English Version
Sanitary tapware - Thermostatic mixing valves (PN 10) -
General technical specification
Robinetterie sanitaire - Mitigeurs thermostatiques (PN Sanitärarmaturen - Thermostatische Mischer (PN 10) -
10) - Spécifications techniques générales Allgemeine technische Spezifikation
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 164.
This draft amendment A1, if approved, will modify the European Standard EN 1111:2017. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.
This draft amendment was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1111:2017/prA1:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Modification to Subclause 13.2.2.1 . 4
2 Modification to Subclause 13.5.1.3 . 4
3 Modification to Subclause 13.5.1.5 . 5
4 Modification to Subclause 13.5.2.3 . 6
5 Modification to Subclause 13.5.2.5 . 7
6 Modification to Subclause 13.5.4.4.2 . 7
7 Modification to Subclause 13.5.5.2 . 8
8 Modification to Subclause 13.5.5.4.1 . 9
9 Modification to Subclause 13.5.5.4.2 . 9
10 Modification to Subclause 16.8.3.1 . 10
European foreword
This document (EN 1111:2017/prA1:2021) has been prepared by Technical Committee CEN/TC 164
“Water supply”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
1 Modification to Subclause 13.2.2.1
Replace entire subclause:
"The measurement is made at the maximum available flow rate going from cold to hot and then from
hot to cold. For the measurement a TMV, as supplied, or the outlet pipework, as defined in A.3, is used.
If the TMV is equipped with water saving accessories or aerators not complying with the flow rates
specified in EN 246, the flow rate test and acoustic test shall be made with the mixing valve as delivered
by the manufacturer.
Single sequential valves shall be adjusted to be able to attain a maximum 44 °C. Starting at full cold (off)
slowly adjust to 44 °C and then return to 34 °C.
Other device control systems (e.g. push-buttons, touch screens, etc.) shall be tested by a method that
ensures the correlation between outlet temperature and flow rate can be suitably recorded. The
procedure is subject to agreement between manufacturer and test laboratory."
with:
"The measurement is made at the maximum available flow rate going from cold to hot and then from
hot to cold. For the measurement a TMV, as supplied or, for valves without integral atmospheric
discharge, with the outlet pipework as defined in A.3 is used.
If the TMV is equipped with water saving accessories or aerators not complying with the dimensions
specified in EN 246, the flow rate test and acoustic test shall be made with the mixing valve as delivered
by the manufacturer.
Single sequential valves shall be adjusted to be able to attain a maximum 44 °C. Starting at full cold (off)
slowly adjust to 44 °C and then return to 34 °C.
Other device control systems (e.g. push-buttons, touch screens, etc.) shall be tested by a method that
ensures the correlation between outlet temperature and flow rate can be suitably recorded. The
procedure is subject to agreement between manufacturer and test laboratory.".
2 Modification to Subclause 13.5.1.3
Replace entire subclause: "
a) Starting from full hot determine the reference points in the following sequence: (38 ± 0,5) °C, (36 -
1) °C, (40 - 1)°C
b) apply and maintain the initial settings shown in Table 8 and allow water to flow until the outlet
temperature has stabilized;
c) start recording the mixed water temperature versus time;
d) within 1 s adjust the temperature control device to read ϑ = (36 - 1) °C;
mix
e) allow the outlet temperature to stabilize;
f) restore the settings in b);
g) within 1 s adjust the temperature control device to read ϑ = (40 - 1) °C;
mix
h) upon temperature stabilization stop recording mixed water temperature versus time."
with: "
a) Apply and maintain the initial inlet settings shown in Table 8 and allow water to flow for period of
maximum 30 s
b) starting from full hot, determine the position of the temperature control for the set temperatures in
the following sequence:
T1 : (38-1) °C,
...
La norme EN 1111:2017/prA1, intitulée "Sanitary tapware - Thermostatic mixing valves (PN 10) - General technical specification", définit une spécification technique générale pour les vannes mélangeuses thermostatiques (TMV) de PN 10. Son champ d'application est pertinent pour les installations sanitaires, notamment dans les cuisines, les salles de bains et les toilettes, où elle garantit l'utilisation sécurisée de l'eau à des températures adaptées. L'un des points forts de cette norme est son attention particulière à la sécurité, surtout pour les groupes vulnérables tels que les enfants, les personnes âgées et les personnes handicapées. Elle fixe des exigences précises pour la température de l'eau mélangée, en veillant à ce qu'elle soit inférieure à 45 °C pour éviter les brûlures. Cela est crucial, car la norme recommande de régler la température de l'eau à environ 38 °C, ce qui correspond à la température corporelle, minimisant ainsi le risque de brûlures pour les jeunes enfants. En outre, cette norme inclut des méthodes d'essai rigoureuses pour vérifier la performance de la température de l'eau mélangée au point d'utilisation. Cela garantit que les vannes fonctionnement efficacement et de manière fiable, renforçant ainsi la confiance des utilisateurs et des professionnels du secteur. Les essais sont réalisés dans des laboratoires, permettant une évaluation précise des produits, bien que ces tests ne soient pas des contrôles qualité en cours de fabrication. La norme EN 1111:2017/prA1 est également pertinente pour les applications domestiques, puisque les TMVs peuvent fournir un seul outlet ou un petit nombre d'outlets, ce qui est idéal pour les installations domestiques conventionnelles. Cela garantit que les utilisateurs peuvent bénéficier de solutions adaptées, sans compromettre la sécurité ou le confort. En résumé, la norme offre une structure claire pour la conception et l'utilisation des vannes mélangeuses thermostatiques, en permettant aux fabricants de se conformer à des exigences spécifiques qui stimulent la sécurité et la fonctionnalité dans un cadre domestique. Sa création répond à un besoin crucial de protection contre les brûlures et souligne l'importance de la supervision, tout en clarifiant les conditions d'utilisation.
SIST EN 1111:2017/prA1 표준은 위생용 혼합수 밸브(Thermostatic Mixing Valves, TMV)에 대한 일반 기술 사양을 규정하고 있습니다. 이 표준의 적용 범위는 PN 10 혼합수 밸브의 기본 구조, 성능 및 재료 요구 사항을 포함하며, 사용 지점에서의 혼합수 온도 성능을 45도 이하로 검증할 수 있는 시험 방법도 포함하고 있습니다. 어린이, 노인, 장애인을 위한 화상 방지 보호장치로 사용될 경우, 혼합수 온도는 약 38도에서 적절한 목욕 온도로 설정되어야 하며, 어린이는 성인보다 낮은 온도에서도 화상을 입을 위험이 있음을 명시하고 있습니다. 이 표준은 주방, 세면대, 화장실 및 욕실과 같은 위생용 기구에 사용하는 밸브에 적용되며, 특별히 많은 출구를 공급하기 위해 설계된 밸브를 제외한 "국내" 용도로 하나의 밸브가 샤워, 욕조, 세면대 및 비데 등을 제어할 수 있도록 허용합니다. SIST EN 1111:2017/prA1 표준의 강점은 사용자의 안전을 위한 엄격한 기준을 마련하고 있다는 점입니다. 이는 혼합수의 온도를 안전한 범위 내에서 유지하여 사고를 예방하고, 어린이나 노약자가 안전하게 목욕할 수 있도록 돕습니다. 또한, 유형 시험(실험실 시험)을 통해 성능을 평가하며, 제조 과정에서의 품질 관리 시험과는 구분된다는 점도 신뢰성을 높입니다. 이 표준은 위생용 혼합수 밸브의 기술적 요구 사항을 명확히 하고 있으며, 유럽 전역에서 공통적으로 적용될 수 있는 기준으로, 사용자 보호 및 기술적 일관성을 제공함으로써 매우 중요합니다.
SIST EN 1111:2017/prA1は、PN 10サーモスタット混合弁（TMV）の一般技術仕様に関する欧州標準です。この標準の範囲は、給湯装置に対する基本的な構造、性能、および材料要件を定めており、使用地点での混合水温性能の検証のための試験方法を含んでいます。特に、45℃未満での性能が求められており、これは子供や高齢者、障害者のためのスケール防止保護を提供するために重要です。 この標準は、キッチンや洗面所（トイレやクロークルームを含む）、浴室における衛生用器具に使用されるバルブに適用されます。特に、家庭での使用において、一つまたは少数のアウトレットに供給を行うTMVが対象であり、大規模なアウトレット用に設計されたバルブは含まれていません。この点は、最新の家庭用需要に合わせて設計されていることを示しています。 標準には、混合水温の設定についても言及があり、38℃程度の適切な入浴温度が推奨されています。これにより、子供のやけどリスクを軽減することができる点は、特に重要です。ただし、バス中の若年層の監視が必要であることを忘れてはなりません。 試験方法に関しては、型式試験に基づいており、製造過程での品質管理試験ではないため、ユーザーは信頼性の高い性能を期待することができます。この標準は、分野内での技術的信頼性と安全性を確保するための重要な基準です。全体的に、SIST EN 1111:2017/prA1は、衛生的な水の供給と安全性に関する必要な基準を提供し、家庭における使用において非常に関連性があります。
The EN 1111:2017/prA1 standard provides a comprehensive framework for the design and performance of thermostatic mixing valves (TMVs) for sanitary tapware, specifically those operating at a nominal pressure of PN 10. Its explicit focus on general construction, performance, and material specifications ensures that TMVs meet the necessary requirements to provide safe and effective temperature control in various sanitary applications. One of the notable strengths of this standard is its emphasis on safety, particularly in regard to vulnerable populations such as children, the elderly, and disabled persons. By addressing the requirement for mixed water temperatures below 45 °C and recommending a suitable bathing temperature of approximately 38 °C, it underscores the importance of scald protection, which is critical in preventing thermal injuries. The scope of the standard is well-defined, applying specifically to valves intended for use in kitchens and washrooms, while deliberately excluding those designed for institutional applications requiring multiple outlet controls. This distinction enhances its relevance for domestic applications, where consumers seek reliable and safe solutions for everyday use. Moreover, the inclusion of detailed test methods for verifying mixed water temperature performance at the point of use adds an essential dimension to the standard, facilitating rigorous validation of TMVs prior to deployment. By differentiating between type tests conducted in laboratory conditions and quality control tests, the standard ensures that manufacturers adhere to strict performance criteria, bolstering overall product reliability. Overall, EN 1111:2017/prA1 serves as a crucial regulatory document within the realm of sanitary tapware, promoting high standards of safety and performance for thermostatic mixing valves, which are indispensable in modern domestic environments.
Die Norm EN 1111:2017/prA1 legt umfassende technische Spezifikationen für thermostatische Mischventile (TMV) mit einem Nenndruck (PN) von 10 fest. Ihr Anwendungsbereich ist besonders relevant für sanitäre Einrichtungen in Küchen und Badezimmern sowie in Waschräumen und umfasst alle Arten von sanitären Armaturen. Die Norm enthält grundlegende Anforderungen an Konstruktion, Leistung und Material, die für die Sicherheit und Effektivität dieser Geräte entscheidend sind. Ein wesentlicher Stärke der Norm ist die Fokussierung auf den Schutz vor Verbrühungen, insbesondere für schutzbedürftige Personengruppen wie Kinder, ältere Menschen und Personen mit Behinderungen. Sie empfiehlt die Einstellung der Mischwassertemperatur auf ein sicheres Badelevel von etwa 38 °C, was das Risiko von Verbrühungen bei niedrigeren Temperaturen minimiert. Dies zeigt die Relevanz der Norm in Bezug auf Verbrauchersicherheit und ermöglicht eine verantwortungsvolle Nutzung der Thermostatventile in häuslichen Anwendungen. Die Norm definiert präzise die Bedingungen, unter denen diese Ventile betrieben werden können, und schränkt den Einsatz auf kleine Anlagen im häuslichen Bereich ein, was bedeutet, dass der Fokus auf den individuellen Gebrauch gelegt wird. Dies hat zur Folge, dass die Norm nicht für institutionelle Anwendungen gedacht ist, was ihre Spezialisierung und die gezielte Ansprache der Bedürfnisse von Privathaushalten unterstreicht. Darüber hinaus werden in der Norm Prüfmethoden zur Verifizierung der Mischwassertemperaturleistung am Entnahmeort beschrieben, was sicherstellt, dass die technische Spezifikation in der Praxis relevant und umsetzbar ist. Es ist wichtig hervorzuheben, dass es sich bei diesen Tests um Typprüfungen handelt, die unter Laborbedingungen erfolgen, was eine hohe Verlässlichkeit der Ergebnisse garantiert. Zusammenfassend lässt sich sagen, dass die EN 1111:2017/prA1 aufgrund ihrer klaren Vorgaben und Sicherheitsaspekte für die Nutzung von thermostatischen Mischventilen von großer Bedeutung ist. Sie stellt sicher, dass die Installationen den erforderlichen Standards entsprechen und gleichzeitig ein hohes Maß an Schutz für die Benutzer bieten.
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