EN 15355:2008/FprA1

Railway applications - Braking - Distributor valves and distributor-isolating devices

This European Standard applies to distributor valves and distributor-isolating devices.
The distributor valves contained in this European Standard are of graduated release type. Direct release types are not included.
Functionally they are regarded as not containing relay valves of any type, even if the relay valves are physically an integral part of the distributor valves.
This European Standard applies to both distributor-isolating devices mounted separate from the distributor valve and distributor-isolating devices integral with the distributor valve.
This European Standard specifies the requirements for the design, testing and quality assurance of distributor valves and distributor-isolating devices.
For interoperable freight wagons, these devices which are operated by compressed air according to EN 14198 are assessed according to the respective technical specification of interoperability.

Bahnanwendungen - Bremse - Steuerventile und Bremsabsperreinrichtungen

Applications ferroviaires - Freinage - Distributeurs de freinage et robinet d'isolement

Železniške naprave - Zavore - Krmilni ventili in naprave za ločitev krmilnih ventilov od zavornega voda - Dopolnilo A1

General Information

• Status: Not Published
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: CEN/TC 256 - Railway applications
• Drafting Committee: CEN/TC 256/SC 3/WG 24 - Components
• Current Stage: 5060 - Closure of Vote - Formal Approval
• Start Date: 29-Jul-2010
• Due Date: 24-Jun-2011
• Completion Date: 29-Jul-2010
• Directive: 2008/57/EC - Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)
• Mandate: M/334 - Mandate for programming and standardisation addressed to CEN, CENELEC and ETSI in the field of the Interoperability of the trans-european conventional rail system
• Ref Project: SIST EN 15355:2008/kFprA1:2010 - Railway applications - Braking - Distributor valves and distributor-isolating devices

Relations

• Merged Into: EN 15355:2008+A1:2010 - Railway applications - Braking - Distributor valves and distributor-isolating devices
• Effective Date: 18-Jan-2023
• Amends: EN 15355:2008 - Railway applications - Braking - Distributor valves and distributor-isolating devices
• Effective Date: 12-Dec-2009

Overview

EN 15355:2008/FprA1 - published by CEN - is the European standard for railway braking components, specifically covering distributor valves and distributor‑isolating devices. The standard applies to distributor valves of the graduated release type (direct release types are excluded) and to isolating devices that are either separately mounted or integral with the distributor valve. It sets out requirements for the design, testing and quality assurance of these components and aligns assessment for interoperable freight wagons with compressed‑air operation as described in EN 14198 and the relevant TSI (Technical Specification for Interoperability).

Key topics and requirements

• Scope limitation: Only distributor valves of the graduated release type are included; direct release valves are explicitly excluded.
• Relay valve treatment: Functionally, distributor valves are regarded as not containing relay valves, even when relay valves are physically integrated.
• Design requirements: Principles for safe and interoperable component design (mechanical, pneumatic interfaces and functional behavior) are specified to ensure compatibility with rolling stock braking systems.
• Testing and validation: Requirements for functional testing, performance checks and verification to demonstrate conformity with the standard.
• Quality assurance: Provisions for manufacturing controls, inspection and documentation to maintain consistent product quality.
• Interoperability alignment: For components used on interoperable freight wagons and compressed‑air systems, assessment is linked to EN 14198 and the relevant TSI procedures. The FprA1 amendment also clarifies the relationship between EN 15355 and EU Directive 2008/57/EC (Annex ZA), supporting presumption of conformity when cited in the OJEU.

Applications and users

Who uses EN 15355:2008/FprA1:

• Brake system manufacturers designing distributor valves and isolating devices
• Rolling stock designers specifying braking components for freight wagons, locomotives and passenger stock
• Test laboratories performing functional and compliance testing
• Railway operators, maintenance teams and procurement departments setting acceptance criteria
• Certification and conformity assessment bodies evaluating interoperability with TSI and EU directives

Practical uses:

• Defining technical procurement specifications for distributor valves
• Ensuring component compatibility in pneumatic braking systems
• Supporting conformity assessment and safety documentation for rolling stock projects

Related standards

• EN 14198 (compressed‑air operated devices for freight wagons)
• Relevant TSI documents and Directive 2008/57/EC (interoperability)

Keywords: EN 15355:2008, distributor valves, distributor‑isolating devices, railway braking, CEN, interoperability, EN 14198, TSI, braking system design, testing, quality assurance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2010
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Railway applications - Braking - Distributor valves and distributor-isolating devices
Bahnanwendungen - Bremse - Steuerventile und Bremsabsperreinrichtungen
Applications ferroviaires - Freinage - Distributeurs de freinage et robinet d'isolement
Ta slovenski standard je istoveten z: EN 15355:2008/FprA1
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
FINAL DRAFT
EN 15355:2008
NORME EUROPÉENNE
EUROPÄISCHE NORM
FprA1
April 2010
ICS 45.060.01
English Version
Railway applications - Braking - Distributor valves and
distributor-isolating devices
Applications ferroviaires - Freinage - Distributeurs de Bahnanwendungen - Bremse - Steuerventile und
freinage et robinet d'isolement Bremsabsperreinrichtungen
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 256.
This draft amendment A1, if approved, will modify the European Standard EN 15355:2008. 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15355:2008/FprA1:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Modification to the Contents .4
2 Modification to the Foreword .4
3 Modification to Annex ZA͕Annex ZA (informative) Relationship between this European Standard
and the Essential Requirements of EU Directive 2008/57/EC of the European Parliament
and of the Council of 17 June 2008 on the interoperability of the rail system within the
Community (Recast) .5
4 Deletion of Annex ZB .9
Foreword
This document (EN 15355:2008/FprA1:2010) has been prepared by Technical Committee CEN/TC 256
“Railway applications”, the secretariat of which is held by DIN.
This document is currently submitted to the Unique Acceptance Procedure.
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 EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
The “Recast” Directive 2008/57/EC of the European Parliament and of the Council on the interoperability of
th
the rail system within the Community was published on 17 June 2008.

The two previous EU Directives 96/48/EC and 2001/16/EC on the interoperability of the High Speed and
th
Conventional rail systems within the Community will therefore be repealed with effect from 19 July 2010.

At this date the harmonised standards for the railway field will have to refer to the new Directive.

In order to fulfil this requirement, it has been decided to produce Amendments for the ENs that will not have
undergone the revision process by the date of the repeal.

This document gives the necessary elements that have been identified by the CEN Consultants for the
amendment of EN 15355:2008.
1 Modification to the Contents
Replace the entry for Annex ZA with:
"Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU
Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of
the rail system within the Community (Recast)"
Delete the entry for Annex ZB.

2 Modification to the Foreword
Replace paragraphs 4 and 5 with the following:
"This document has been prepared under a mandate given to CEN/CENELEC/ETSI by the European
Commission and the European Free Trade Association, and supports essential requirements of EU Directive
2008/57/EC.
For relationship with EU Directive 2008/57/EC, see informative Annex ZA, which is an integral part of this
document."
3 Modification to Annex ZA
Replace Annex ZA with the following:
"
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 2008/57/EC of the European Parliament
and of the Council of 17 June 2008 on
...