SIST EN 15355:2019+A1:2023
(Main + Amendment)Railway applications - Braking - Distributor valves and distributor-isolating devices
Railway applications - Braking - Distributor valves and distributor-isolating devices
This document applies to distributor valves and distributor-isolating devices.
The distributor valves contained in this document are of graduable 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 document applies to both distributor-isolating devices mounted separate from the distributor valve and distributor-isolating devices integral with the distributor valve.
This document specifies the requirements for the design, testing and quality assurance of distributor valves and distributor-isolating devices.
The distributor valve and distributor-isolating device are intended to be part of a brake system mounted in a vehicle with maximum length of 31 m and maximum brake pipe volume of 25 l taking into consideration brake pipe inner diameters between 25 mm and 32 mm.
Bahnanwendungen - Bremse - Steuerventile und Bremsabsperreinrichtungen
Dieses Dokument gilt für Steuerventile und Bremsabsperreinrichtungen für Druckluft¬bremsen.
Dieses Dokument gilt für mehrlösige Steuerventile. Einlösige Steuerventile werden nicht behandelt.
Die Funktion des Steuerventils wird ohne Berücksichtigung von Relaisventilfunktionen jeglicher Art betrachtet, auch wenn Relaisventile in das Steuerventil integriert sein können.
Dieses Dokument gilt sowohl für in das Steuerventil integrierte, als auch für separat angeordnete Bremsabsperreinrichtungen.
Dieses Dokument definiert die Anforderungen an Konstruktion, Prüfung und Qualitätssicherung der Steuer¬ventile und Bremsabsperreinrichtungen.
Das Steuerventil und die Bremsabsperreinrichtung werden als Teil eines in einem Fahrzeug eingebauten Bremssystems betrachtet, wobei das Fahrzeug maximal 31 m lang ist, ein maximales Hauptluft¬leitungsvolumen von 25 l aufweist und die Hauptluftleitungsinnendurchmesser zwischen 25 mm und 32 mm liegen.
Applications ferroviaires - Freinage - Distributeurs de freinage et robinet d'isolement
Le présent document s’applique aux distributeurs de frein et aux robinets d’isolement.
Les distributeurs de frein décrits dans le présent document sont de type à desserrage gradué. Les types à desserrage direct ne sont pas couverts.
Sur un plan fonctionnel, ils sont considérés comme ne comportant pas de relais pneumatique d’aucune sorte, même si les relais pneumatiques font partie intégrante des distributeurs de frein.
Le présent document s’applique aux robinets d’isolements montés séparément du distributeur de frein ainsi qu’aux robinets d’isolement intégrés au distributeur de frein.
Il spécifie les exigences à respecter pour la conception, les essais et l’assurance qualité des distributeurs de frein et des robinets d’isolement.
Le distributeur de frein et le robinet d’isolement sont destinés à faire partie d’un système de freinage monté sur un véhicule d’une longueur maximale de 31 m équipé d’une conduite générale d’un volume maximal de 25 l, prenant en compte les diamètres intérieurs de la conduite générale de 25 mm à 32 mm.
Železniške naprave - Zavore - Krmilni ventili in naprave za ločitev krmilnih ventilov od zavornega voda (vključuje dopolnilo A1)
Ta dokument se uporablja za krmilne ventile in naprave za ločitev krmilnih ventilov od zavornega voda.
Krmilni ventili v tem dokumentu so namenjeni za uporabo pri postopnem zaviranju. Krmilni ventili za neposredno zaviranje niso vključeni.
Funkcionalno se šteje, da ne vsebujejo relejnih ventilov nobenega tipa, tudi če so relejni ventili fizično sestavni del krmilnih ventilov.
Ta dokument se uporablja tako za naprave za ločitev krmilnih ventilov od zavornega voda, ki so nameščene ločeno od krmilnega ventila, kot za naprave za ločitev krmilnih ventilov od zavornega voda, ki so sestavni del krmilnega ventila.
Ta dokument določa zahteve za projektiranje, preskušanje in zagotavljanje kakovosti krmilnih ventilov in naprav za ločitev krmilnih ventilov od zavornega voda.
Krmilni ventil in naprava za ločitev krmilnih ventilov od zavornega voda sta namenjena kot del zavornega sistema, vgrajenega v vozilo z največjo dolžino 31 m in največjo prostornino zavornega voda 25 l, ob upoštevanju notranjih premerov zavornega voda med 25 mm in 32 mm.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 15355:2019+A1:2023
01-julij-2023
Železniške naprave - Zavore - Krmilni ventili in naprave za ločitev krmilnih ventilov
od zavornega voda (vključuje dopolnilo A1)
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 15355:2019+A1:2023
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
SIST EN 15355:2019+A1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 15355:2019+A1:2023
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SIST EN 15355:2019+A1:2023
EN 15355:2019+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2023
EUROPÄISCHE NORM
ICS 45.060.01 Supersedes EN 15355:2019
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 European Standard was approved by CEN on 18 February 2019 and includes Amendment 1 approved by CEN on 25
December 2022.
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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15355:2019+A1:2023 E
worldwide for CEN national Members.
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EN 15355:2019+A1:2023 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviations . 14
4.1 Symbols . 14
4.2 Abbreviations . 14
5 Requirements to function, design and manufacturing . 14
5.1 Functional requirements. 14
5.2 Control chamber . 14
5.3 Pilot volume . 14
5.4 Auxiliary reservoir volume and brake cylinder size . 14
5.5 Shock and vibration . 15
5.6 Service life . 15
5.7 Compressed air quality . 15
5.8 Environmental conditions . 15
5.8.1 General . 15
5.8.2 Ambient temperature . 15
5.8.3 Altitude . 15
5.8.4 Humidity . 15
5.8.5 Other environmental specifications . 16
5.9 Design requirements regarding structural integrity at maximum pressure . 17
5.10 Tightness . 17
5.11 Fire behaviour . 17
6 Functional requirements and Type tests. 17
6.1 General . 17
6.2 Test benches . 17
6.3 Functional requirements and tests. 18
6.3.1 General . 18
6.3.2 Tightness . 18
6.3.3 Inexhaustibility . 20
6.3.4 Compensation of output pressure during brake application . 24
6.3.5 Normal working pressure . 25
6.3.6 Released and stand by position . 26
6.3.7 Maximum output pressure in relation to input pressure reduction . 29
6.3.8 Maximum output pressure and build-up and release times of an individual
distributor valve . 30
6.3.9 Release time within a train consist . 31
6.3.10 Sensitivity . 32
6.3.11 Insensitivity . 33
6.3.12 Control sensitivity and hysteresis . 34
6.3.13 Quick service function . 35
6.3.14 Propagation speed . 36
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6.3.15 Inshot function. 37
6.3.16 Manual release function . 38
6.3.17 Distributor isolating device . 41
6.3.18 Protection against input pressure overcharge . 46
6.3.19 Initial charging of the brake system of a vehicle . 49
6.3.20 Initial charging of the brake system of a train . 50
6.3.21 Maximum supply pressure . 51
6.3.22 Tests at different temperatures . 51
6.3.23 Shock and vibration . 53
6.3.24 Distributor dump valve . 54
7 In-service assessment . 55
8 Designation . 55
9 Identification and marking . 55
9.1 Distributor valve . 55
9.2 Distributor-isolating device . 56
Annex A (normative) Test benches . 57
A.1 General . 57
A.2 Test bench Type A for single vehicle . 57
A.3 Test bench Type B for train with 400 m length . 59
A.4 Test bench Type C for train with 500 m length . 59
A.5 Test bench Type D for train with 750 m length . 59
A.6 Test bench Type E for train with 1 200 m length . 59
Annex B (normative) Handle for operating the distributor-isolating device . 60
Annex C (normative) In-service assessment . 61
Annex D (normative) Handles for the activation of manual release functions . 62
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of Directive (EU) 2016/797 aimed to be covered . 64
Bibliography . 66
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EN 15355:2019+A1:2023 (E)
European foreword
This document (EN 15355:2019+A1:2023) has been prepared by Technical Committee CEN/TC 256
“Railway applications”, 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 November 2023, and conflicting national standards shall
be withdrawn at the latest by November 2023.
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 15355:2019".
This document includes Amendment 1 approved by CEN on 25 December 2022.
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.
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1 Scope
This document applies to distributor valves and distributor-isolating devices.
The distributor valves contained in this document are of graduable 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 document applies to both distributor-isolating devices mounted separate from the distributor valve
and distributor-isolating devices integral with the distributor valve.
This document specifies the requirements for the design, testing and quality assurance of distributor
valves and distributor-isolating devices.
The distributor valve and distributor-isolating device are intended to be part of a brake system mounted
in a vehicle with maximum length of 31 m and maximum brake pipe volume of 25 l taking into
consideration brake pipe inner diameters between 25 mm and 32 mm.
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 14198, Railway applications — Braking — Requirements for the brake system of trains hauled by
locomotives
EN 14478:2017, Railway applications — Braking — Generic vocabulary
EN 15611, Railway applications — Braking — Relay valves
EN 45545-2, Railway applications — Fire protection on railway vehicles — Part 2: Requirements for fire
behaviour of materials and components
EN 60721-3-5:1997, Classification of environmental conditions — Part 3: Classification of groups of
environmental parameters and their severities — Section 5: Ground vehicle installations (IEC 60721-3-
5:1997)
EN 61373:2010, Railway applications — Rolling stock equipment — Shock and vibration tests (IEC
61373:2010)
ISO 8573-1:2010, Compressed air — Part 1: Contaminants and purity classes
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14478, and the following 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 http://www.iso.org/obp.
NOTE Some of the curves in this clause are simplified, not showing the real pressure development. This is
considered to be sufficient for the purpose of this clause.
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3.1
distributor valve
apparatus to control a pneumatic output pressure as an inverse function of the variation of the brake pipe
pressure (input pressure)
Note 1 to entry: See Figure 1 and Figure 2.
Note 2 to entry: For the purpose of this European Standard, input pressure is considered to be the brake pipe
pressure and output pressure is usually considered to be the pilot pressure, which controls the brake cylinder
pressure usually via a relay valve.
Key
1 input pressure
2 distributor valve
3 output pressure
Figure 1 — Distributor valve, main function and block diagram
Key
1 normal working pressure level
2 input pressure
3 output pressure
Figure 2 — Distributor valve, main function and pressure diagram
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3.2
brake application
establishment of a certain output pressure fed by the auxiliary reservoir, initiated by a drop of input
pressure (brake pipe pressure)
Note 1 to entry: See Figure 3.
Key
1 normal working pressure 4 output pressure
level
2 input pressure service brake application
3 maximum output pressure emergency brake
application
Figure 3 — Service and emergency brake application
3.3
service brake application
establishment of an output pressure less than the possible maximum, initiated by a drop of input pressure
(brake pipe pressure) beginning at the normal working pressure level down to a value between the
minimum reduction and the level of input pressure necessary for full service braking (equivalent to
“service braking” in EN 14478)
Note 1 to entry: This pressure drop causes the distributor valve to establish a corresponding output pressure.
3.4
full service brake application
establishment of the maximum output pressure initiated by a defined drop of input pressure (brake pipe
pressure), beginning from the normal working pressure level down to the specific input pressure level
(equivalent to “full service braking” in EN 14478)
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3.5
emergency brake application
establishment of the maximum output pressure caused by a drop of input pressure starting with the value
for normal working pressure down to the level necessary for reaching the maximum output pressure in
time t , faster than the specified time for reaching the maximum output pressure, t (equivalent to
1 2
“emergency braking” in EN 14478)
Note 1 to entry: This causes the distributor valve to operate at his maximum capacity, meeting the system
requirements (see Figure 4).
Note 2 to entry: Usually during emergency braking the input pressure is reduced to 0.
Key
1 normal working pressure level
2 input pressure
3 input pressure level necessary for reaching maximum output pressure
4 maximum output pressure
5 output pressure
6 95 % of the maximum output pressure
t time to reach the input pressure necessary to establish maximum output pressure
1
t time to reach 95 % of the maximum output pressure
2
Figure 4 —Emergency brake application
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3.6
brake release
venting the output pressure to atmosphere, initiated by an increase of input pressure (brake pipe
pressure) after a brake application (equivalent to “graduable application and release” in EN 14478)
Note 1 to entry: See Figure 5.
Key
1 normal working pressure level
2 input pressure
3 output pressure
4 1,50 bar below normal working pressure level
Figure 5 — Brake release
3.7
full release
complete venting of output pressure, initiated by an increase of input pressure (brake pipe pressure)
after a brake application up to the normal working pressure level
3.8
graduable application and release
incremental increase/reduction of output pressure initiated by an incremental reduction/increase of
input pressure in the range of pressure from full service braking to full release
3.9
build-up time
time for increasing output pressure from when it starts to rise from 0,00 bar up to 95 % of the maximum
output pressure, when input pressure is reduced from normal working pressure level down to 0,00 bar
with a time of less than 2 s for the first pressure drop of 1,50 bar
3.10
release time
time for reducing the maximum output pressure from the moment when it starts to decrease until it
reaches 0,40 bar, when input pressure is increased up to the normal working pressure level, starting from
1,50 bar below it, in less than 2 s
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3.11
manual release
function which requires deliberate and intentional manual action in order to cancel brake application (to
release the distributor valve) provided by one distributor valve
Note 1 to entry: Manual release function can be achieved in two ways (see 6.3.16).
3.12
automatic manual release
operation, which requires manual action by the command element after which the release function is
completed automatically
3.13
non-automatic manual release
operation, which requires manual action by the command element during the entire process until the
release function is completed
Note 1 to entry: Stopping action before complete release results in incomplete release.
3.14
stand-by position (ready for operation)
condition of the distributor valve in which braking can be initiated in compliance with all specifications
3.15
normal working pressure
pressure in the brake pipe that corresponds with the brake release condition
[SOURCE: EN 14478:2017, 4.10.4.2]
3.16
sensitivity
ability of the distributor valve to supply an output pressure under certain conditions of input pressure
reduction
Note 1 to entry: See Figure 6.
Note 2 to entry: If a certain value is specified, it gives the minimum gradient of input pressure reduction which
causes the distributor valve to react after a certain time.
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3.17
insensitivity
ability of the distributor valve to prevent establishing an output pressure under certain conditions of
input pressure reduction
Note 1 to entry: If a certain value is specified, it gives the maximum (fastest) gradient of the input pressure
reduction which will not cause the distributor valve to react.
Key
1 input pressure
distributor valve shall
2 normal working
react
pressure
3 insensitivity area
distributor valve may
react
4 sensitivity area
5 sensitivity limit
distributor valve shall
not react
6 insensitivity limit
Figure 6 — Sensitivity and insensitivity areas and limits
3.18
quick service function
function of a distributor valve, when applying the brake from stand-by and released position, which
allows the local fast venting of brake pipe pressure by a certain specified amount and at a certain specified
gradient, to provide pneumatic brake signal transmission through a train
3.19
propagation time
time between the initiation of an emergency brake application by the driver’s brake handle and the
beginning of brake cylinder pressure build-up on the last vehicle of a train
3.20
propagation speed
length of brake pipe divided by propagation time
3.21
normal working pressure overcharge
build-up input pressure above normal working pressure to reduce the release time of a train and/or to
adjust the distributors control chamber pressure of all vehicles of a complete train (equivalent to
“overcharge” in EN 14478)
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3.22
inshot function
function of the distributor valve which allows a faster increase of the output pressure at the beginning of
brake application (t against t without inshot function)
1 2
Note 1 to entry: The purpose is the quick build-up of the necessary pressure for initiating the friction braking
process, most effective in brake mode G (see Figure 7).
Key
1 maximum output pressure level
2 output pressure
3 pressure necessary for starting the friction process
t with inshot function
1
t without inshot function
2
Figure 7 — Inshot function, output pressure development with and without inshot function
3.23
control chamber
air volume connected to, or part of a brake distributor valve, the pressure in which is compared to the
local brake pipe pressure within the distributor valve, and used to determine the distributor valve output
pressure
[SOURCE: EN 14478:2017, 4.10.6.3]
3.24
auxiliary reservoir
container designed to store air under pressure which is protected and dedicated for use by the brakes on
the vehicle to which it is fitted
[SOURCE: EN 14478:2017, 4.10.6.2]
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3.25
pilot volume
volume fed by the output pressure of the distributor valve and used to provide the pilot pressure to the
downstream relay valve
3.26
direct release
function which allows a complete reduction of output pressure in one step initiated by a limited increase
of the brake pipe pressure even if not reaching the normal working pressure
3.27
maximum output pressure
output pressure which is reached after an emergency braking or full service braking
Note 1 to entry: See Figure 3.
3.28
control sensitivity
ability of the distributor valve to respond accurately and sensitively to input pressure modifications by
delivering corresponding output pressure variations
3.29
distributor isolation device
device which isolates the distributor valve from the brake pipe
3.30
normal litre
Nl
unit of amount of a gas equal to the amount of 1 l at a pressure of 1,00 bar and at a standard temperature,
at 20 °C
Note 1 to entry: Air flow is often stated in normal litres per minute (Nl/min).
3.31
distributor dump valve
optional valve within or attached to the distributor valve to eliminate an overcharge in the control
chamber as the input pressure of the distributor valve is reduced to 0,00 bar and (optional) increased
again up to service pressure
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4 Symbols and abbreviations
4.1 Symbols
t time
p pressure
B maximum brake cylinder pressure
CPmax
4.2 Abbreviations
P Brake mode “passenger”
G Brake mode “goods” (freight)
5 Requirements to function, design and manufacturing
5.1 Functional requirements
Functional requirements to be met by the distributor valve and distributor-isolating device are specified
in Clause 6.
5.2 Control chamber
The control chamber may be integral with the distributor valve or as a separate volume.
5.3 Pilot volume
The pilot volume may be integral with the distributor valve, a relay valve or as a separate volume. The
timing chokes of the distributor valve shall be associated with the defined pilot volume. The pressure
inside the pilot volu
...
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