EN 14601:2005

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.YRGHBahnanwendungen - Gerade und abgewinkelte Luftabsperrhähne für die Hauptluftleitung und HauptbehälterleitungApplications ferroviaires - Robinets d'arret droit ou coudé pour conduite générale de frein et conduite principaleRailway applications - Straight and angled end cocks for brake pipe and main reservoir pipe45.040Materiali in deli za železniško tehnikoMaterials and components for railway engineeringICS:Ta slovenski standard je istoveten z:EN 14601:2005SIST EN 14601:2005en01-julij-2005SIST EN 14601:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14601May 2005ICS 45.060.01English versionRailway applications - Straight and angled end cocks for brakepipe and main reservoir pipeApplications ferroviaires - Robinets d'arrêt droit ou coudépour conduite générale de frein et conduite principaleBahnanwendungen - Gerade und abgewinkelteAbsperrhähne für die Bremsleitung undHauptluftbehälterleitungThis European Standard was approved by CEN on 24 March 2005.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 14601:2005: ESIST EN 14601:2005

Dimensions of end cocks.27 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 96/48.31 ANNEX ZB (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2001/16.32 Bibliography.33
In case of doubt a sketch should be provided. 3.2.3 mechanical detent spring arrangement to retain moving parts in open or closed position and only able to be moved to another position with the specified force 3.2.4 latch mechanical device to retain moving parts in open or closed position which can only be moved when the latch is released 3.3 Types of end cocks 3.3.1 Design 3.3.1.1 straight end cock cock with axis of inlet and outlet ports in line NOTE
See Figure 1.
Figure 1 — Straight end cock SIST EN 14601:2005

See Figure 2. 35º± 2º Figure 2 — Angled end cock 3.3.2 Location of the handle 3.3.2.1 right hand end cock handle located at the right hand side of the end cock with the handle closed in a vertically upwards position NOTE 1
The end cock is opened by rotating the handle in an anticlockwise direction (see Figure 3). NOTE 2
Standard mounting position. Other positions of handle are defined by drawing (see Figure 3). 14332 Key 1 Closed position 2 Open position 3 Outlet port 4 Inlet port
Figure 3 — Right hand end cock SIST EN 14601:2005

The cock is opened by rotating the handle in a clockwise direction (see Figure 4). NOTE 2
Standard mounting position. Other positions of handle are defined by drawing (see Figure 4). 33421 Key 1 Closed position 2 Open position 3 Outlet port 4 Inlet port
Figure 4 — Left hand end cock 3.4 States 3.4.1 closed position position of the valve component part in which the flow path between inlet and outlet ports is closed and the venting passage is open and connected to the hose and coupling side of the cock NOTE 1
The cock handle is closed in the vertically upwards position on the vehicle. NOTE 2
The purchaser will define the angle between the cock inlet port axis and the vertically upwards handle position for cocks not mounted horizontally. 3.4.2 open position position of the valve member in which the flow path between inlet and outlet ports is fully open, and the venting passage is closed 3.4.3 fall time time taken in a device for a quantity of air to fall from a specified high pressure level down to a specified lower pressure level NOTE
Parameter used to define the fluid characteristic of the cock. SIST EN 14601:2005

Sometimes expressed in statistical term as a probability. 4 Requirements 4.1 General Workmanship and quality shall be ensured by the manufacturer, therefore quality assurance is the responsibility of the manufacturer under the agreement with the purchaser. Warranty of the part is also the responsibility of the manufacturer in accordance with the agreement with the purchaser. 4.2 Operating conditions The end cock shall be able to function under the following conditions: a) Where the air quality of the compressed air specified in ISO 8573-1:2001, class 4-4-5. This requirement is verified when tests are carried out in accordance with 5.2. b) In the temperature range for the environmental conditions to which the rail vehicle is submitted during its operation and at least for a temperature range defined by the class T2 of EN 50125-1. The purchaser can specify a higher temperature value if operational constraints demand it. This requirement is tested in accordance with 5.3.3, 5.3.7 and 5.3.12. c) The end cock shall withstand the external corrosion due to normal atmospheric pollutants as specified in EN 50125-1. The end cock is tested in accordance with the test shown in 5.3.13. d) In the vibrational environment of the rail vehicle on which it is mounted and it shall remain in either the open or closed position. The cock shall be tested in accordance with 5.3.10. SIST EN 14601:2005

Detachable handles and the spindle should be designed in such a way that an unambiguous angular relationship between handle and spindle will remain. SIST EN 14601:2005

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1,51,5
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2 Figure 5 — Marking on end of the spindle 4.3.7 Fall time The air passages shall be designed to minimise the air flow losses within the cock and the cross-sectional area shall not be smaller than the cross-sectional area of a plain pipe of 25 mm internal diameter. The pressure fall time should not be longer than that for an equivalent pipe of the same nominal diameter, as tested in 5.3.4. 4.3.8 Leakage The sealing arrangement within the end cock shall prevent any unacceptable loss of air. The allowable loss of air shall be less than the leakage values when tested in accordance with 5.3.7. 4.3.9 Vacuum withstanding When the purchaser requires a vacuum withstand, the end cock shall be able to function with a pressure of 0,75 bar below atmospheric pressure. The leakage is tested in accordance with 5.3.12. 4.3.10 Pneumatic shocks The components shall be able to resist the pneumatic shocks to which the cock is subject when opening quickly. This requirement is tested in accordance with 5.3.6. 4.4 Constructional characteristics 4.4.1 External appearance The external surfaces of the end cock shall be free of sharp edges which could be a danger to those persons handling the cock or to other equipment in the proximity of the end cock. This requirement shall be checked while testing the other constructional features in accordance with 5.3.2. 4.4.2 Connections The body of the end cock shall have an internal thread G1i-EN ISO 228-2 or G1¼i-EN ISO 228-2, for connection to the brake or reservoir pipe. The end of the body adjacent to the internal threads shall be of hexagonal form or have flats (see Annex A). If required by the Purchaser, the body end can have a flat sealing face for « Flange » type of connections. The body of the end cock shall h
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