SIST EN 14601:2005
(Main)Railway applications - Straight and angled end cocks for brake pipe and main reservoir pipe
Railway applications - Straight and angled end cocks for brake pipe and main reservoir pipe
This document is applicable to manually operated end cocks designed to cut-off the brake pipe and the main reservoir pipe of the air brake and compressed air system of rail vehicles; without taking the type of vehicles and track-gauge into consideration.
This document specifies requirements for the design, dimensions, testing and certification (qualification and/or homologation), and marking.
Bahnanwendungen - Gerade und abgewinkelte Luftabsperrhähne für die Hauptluftleitung und Hauptbehälterleitung
Diese Europäische Norm gilt für manuell bediente Luftabsperrhähne an den Enden der Hauptluft und der Hauptbehälterleitung im Druckluft( brems) system von Eisenbahnfahrzeugen, ohne Berücksichtigung der Bauart der Fahrzeuge und der Spurweite.
Diese Europäische Norm enthält Anforderungen hinsichtlich der Gestaltung, der Abmessungen, der Prüfung und der Zertifizierung (Qualifizierung und/ oder Zulassung) und der Kennzeichnung.
Applications ferroviaires - Robinets d'arret droit ou coudé pour conduite générale de frein et conduite principale
Železniške naprave – Ravne in kotne zaporne pipe za zavorne in glavne zračne vode
General Information
Relations
Standards Content (Sample)
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
SIST EN 14601:2005
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
EN 14601:2005 (E) 2 Contents Page Foreword.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.5 4 Requirements.9 4.1 General.9 4.2 Operating conditions.9 4.3 Functional characteristics.10 4.3.1 General.10 4.3.2 Open and closed positions.10 4.3.3 Lubrication.10 4.3.4 Venting port.10 4.3.5 Torque.10 4.3.6 Spindle handle of the end cock.10 4.3.7 Fall time.11 4.3.8 Leakage.11 4.3.9 Vacuum withstanding.11 4.3.10 Pneumatic shocks.11 4.4 Constructional characteristics.11 4.4.1 External appearance.11 4.4.2 Connections.11 4.4.3 Space envelope.11 4.4.4 Mechanical shocks.12 4.4.5 Resistance to torque.12 4.4.6 Life expectancy.12 5 Type test methods.12 5.1 Sampling for type test.12 5.2 Test requirements.12 5.3 Test procedure.12 5.3.1 Principle.12 5.3.2 Check of physical and geometrical characteristics.13 5.3.3 Measurement of the operating torque.14 5.3.4 Measurement of the pressure fall time.14 5.3.5 Hydraulic test (water pressure) of the end cock body at given pressure.16 5.3.6 Operating test under air flow condition.17 5.3.7 Pneumatic test of the isolating device at given pressures and temperatures.17 5.3.8 Endurance at ambient temperature with reduced air flow.19 5.3.9 Measurement of the operating torque drift.20 5.3.10 Vibration test.20 5.3.11 Resistance to shock test.20 5.3.12 Vacuum test.21 5.3.13 Corrosion test.22 5.3.14 Resistance to torque:.22 5.3.15 Examination.24 5.4 Approval validity.24 5.5 Type test report.24 6 Homologation.24 6.1 General.24 6.1.1 Procedure.24 6.1.2 Pass/fail criteria.25 6.2 Homologation test report.25 7 Routine tests.25 SIST EN 14601:2005
EN 14601:2005 (E) 3 8 Designation.25 9 Marking.26 Annex A (normative)
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
SIST EN 14601:2005
EN 14601:2005 (E) 4 Foreword This document (EN 14601:2005) 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 2005, and conflicting national standards shall be withdrawn at the latest by November 2005. This European Standard 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 Directives 96/48 and 2001/16. For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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.
SIST EN 14601:2005
EN 14601:2005 (E) 5 1 Scope This European Standard is applicable to manually operated end cocks designed to cut-off the brake pipe and the main reservoir pipe of the air brake and compressed air system of rail vehicles; without taking the type of vehicles and track-gauge into consideration. This European Standard specifies requirements for the design, dimensions, testing and certification (qualification and/or homologation), and marking. 2 Normative references The following referenced documents are indispensable for the application 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 50125-1, Railway applications — Environmental conditions for equipment — Part 1: Equipment on board rolling stock EN 61373, Railway applications — Rolling stock equipment — Shock and vibration tests (IEC 61373:1999) EN ISO 228-2, Pipe threads where pressure-tight joints are not made on the threads — Part 2: Verification by means of limit gauges (ISO 228-2:1987) ISO 5208:1993, Industrial valves — Pressure testing of valves ISO 8573-1:2001, Compressed air — Part 1: Contaminants and purity classes ISO 9227:1990, Corrosion tests in artificial atmospheres — Salt spray tests 3 Terms and definitions For the purpose of this European Standard, the following terms and definitions shall apply. 3.1 end cock two position, three way cock, with no piped vent and, with a rotary spindle moved by the operating handle 3.2 Components 3.2.1 port terminus of a fluid passage in a component (to which may be connected pipelines) for the transmission of fluid to, or from the component 3.2.1.1 venting port port which provides passage to atmosphere 3.2.1.2 outlet port port which is vented to atmosphere when the cock is closed 3.2.1.3 inlet port port which is not vented when the cock is closed SIST EN 14601:2005
EN 14601:2005 (E) 6 3.2.1.4 threaded port port arranged to accept screw threaded connection 3.2.2 direction of rotation direction of rotation quoted as viewed looking at the handle side NOTE
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
EN 14601:2005 (E) 7 3.3.1.2 angled end cock cock with axis of outlet port at an angle of (35 ± 2)° with axis of inlet port NOTE
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
EN 14601:2005 (E) 8 3.3.2.2 left hand end cock handle located at the left hand side of the cock with the handle closed is in a vertically upwards position NOTE 1
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
EN 14601:2005 (E) 9 3.4.4 proof pressure test pressure, in excess of a maximum rated pressure, which causes no malfunction or permanent deformation damage 3.5 temperature range range of the temperature within which the apparatus can operate satisfactorily 3.6 Leakage 3.6.1 external leakage leakage of the fluid contained in the end cock to atmosphere 3.6.2 internal leakage leakage of the fluid contained in the end cock from one side to the other side with the valve component part in the closed position 3.7 drift change or variation of a condition with time under steady state operating conditions 3.8 life expectancy predicted working period during which a component or system will maintain a specified level of performance under specified conditions NOTE
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
EN 14601:2005 (E) 10 4.3 Functional characteristics 4.3.1 General The operating handle of the end cock shall be equipped with a detent or latch system. The requirements given in 4.3.2 to 4.3.10 are defined to ensure the air flow through the brake pipe and main reservoir pipe and ensure no malfunction of the cock after the brake pipe test (as part of the brake test before the trains start). 4.3.2 Open and closed positions The handle position shall be the same on any vehicle, so the opening and closing of the cock shall be achieved by turning its spindle through a minimum of 90° and not more than 100°. Stops shall be provided at the extremes of rotation, so that the open and closed positions are achieved positively. The open and closed positions are defined in 3.4.1 and 3.4.2. 4.3.3 Lubrication It shall be possible to operate the end cock at all pressures without additional lubrication. 4.3.4 Venting port The end cock shall incorporate a venting port with a minimum area of 80 mm2, arranged so that when the cock is closed the compressed air from the coupling hose end of the cock (outlet port connected to the next vehicle) can be exhausted to atmosphere. Venting shall have commenced when the operation of the end cock has reduced the cross-sectional area of the bore of the end cock by one third. The venting port shall not be able to be obstructed when the cock is mounted on the rail vehicle. The venting port shall be designed and arranged such that the under usual operation, the operating personnel are not endangered by the exhaust-flow, or objects carried by it, nor by excessive noise level. 4.3.5 Torque All end cocks with mechanical detent, or with latch engaged shall not be operated by vibration or shocks. The end cock shall be capable of manual operation therefore the operating torque of the handle shall be in the range of 9 Nm to 20 Nm for end cocks with detent and a maximum of 6 Nm for cocks with latch. The torque is tested in accordance with 5.3.3. Torque drifts shall not be allowed. This requirement is tested in accordance with 5.3.9. 4.3.6 Spindle handle of the end cock Where the handle is detachable and the unique angular relationship between it and the spindle is not constructionally assured, it shall not be possible to assemble the handle to the spindle except where the axis of the handle and the diametrical spindle mark are aligned and the spindle shall be marked in accordance with Figure 5 or as otherwise specified by the purchaser. The relative position of the handle and spindle, when assembled, shall be maintained under all operating and environmental conditions. The notch in accordance with Figure 5 indicates the position of the spindle (open/closed). NOTE
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
EN 14601:2005 (E) 11 1
y
1,51,5
x
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 have an external thread for connection to the coupling hose in accordance with Annex A, and checked in accordance with 5.3.2. 4.4.3 Space envelope The end cock shall be contained in the space envelope in Annex A. Sizes are checked in accordance with 5.3.2. SIST EN 14601:2005
EN 14601:2005 (E) 12 The cock handle shall be designed according to ergonomic principles taking into account, that the operator wears protective gloves. There shall be enough space between the handle and the vent housing to prevent risk of crushing. 4.4.4 Mechanical shocks The end cock body shall withstand a mechanical shock with an energy value equal to 120 J. This characteristic is tested in accordance with 5.3.11. 4.4.5 Resistance to torque When a torque of 200 N·m is applied to the handle, no permanent deformation shall occur to any part of the end cock. This requirement is tested in accordance with 5.3.14. 4.4.6 Life expectancy The life expectancy shall be such that the end cock is able to function satisfactorily after 10 000 cycles in accordance with 5.3.8. 5 Type test methods 5.1 Sampling for type test For the type test, a sample of ten end cocks produced under the condition of series production shall be tested. 5.2 Test requirements All the type tests shall be performed at 20 °C ± 5°C and the quality of the compressed air equivalent to class 4-4-5 specified in ISO 8573-1:2001. All pressures quoted are gauge pressures, not absolute pressures. The tests marked with a « * » shall be performed additionally at T2 specified in the EN 50125-1 and at a wider temperature range if otherwise agreed between purchaser and supplier (pass/fail criteria for this case shall be agreed between purchaser and supplier). 5.3 Test procedure 5.3.1 Principle The tests shall be carried out in the order shown in Table 1. This table is designed to avoid unnecessary test repetitions. SIST EN 14601:2005
EN 14601:2005 (E) 13 Table 1 —Operations to carry out for qualification Tests Corresponding subclauses of this document Tested end cock number
1 2 3 4 5 6 7 8 9 10 Physical and geometrical characteristics 5.3.2 X X X X X X X X X X Measurement of the fall time 5.3.4
X
Hydraulic test (water pressure) 5.3.5
X
Vibration 5.3.10
X
Resistance to shock test 5.3.11
X
Measurement of the operating torque 5.3.3
X X X X
Measurement of the torque drift 5.3.9 X X X X
Pneumatic test of the isolating device 5.3.7
X X X X
Endurance 5.3.8
X
Operating test with flow 5.3.6
X X
X Measurement of the operating torque 5.3.3
Xa X
Pneumatic test of the isolating device 5.3.7
X a X
X X X Vacuum test 5.3.12
X aCorrosion test 5.3.13
X
Resistance to torque 5.3.14
X Examination
5.3.15
X X
a
Tests shall be performed at 20 °± 5 °C and extreme temperatures. 5.3.2 Check of physical and geometrical characteristics 5.3.2.1 Procedure The requirement of 4.3.1, 4.3.2 and 4.3.3 4.3.5, shall be checked using appropriate measuring instruments, in accordance with the specification. Unless specified in the text the threaded parts shall be checked by GO/NO-GO gauges. 5.3.2.2 Pass/fail criteria The result shall be satisfactory if all the specified characteristics are met. SIST EN 14601:2005
EN 14601:2005 (E) 14 5.3.3 Measurement of the operating torque 5.3.3.1 Procedure The operating torque is measured with a torque wrench, which can be equipped with extensometric gauges connected to reading equipment. The value of the torque is taken into consideration after four cycles « Open - Closed - Open ». The duration of one cycle is 2 s. The test shall be carried out with temperature of – 40 °C + 20 °C, + 35 °C, or other specified extreme temperatures successively without test pressure and with static pressure of bar1005,0−. 5.3.3.2 Pass/fail criteria The torque value shall be in accordance with 4.3.5. 5.3.4 Measurement of the pressure fall time 5.3.4.1 Measurement of the pressure fall time through end cock 5.3.4.1.1 General The test consists of Operation 1 for calibration of the test assembly and Operation 2 for measuring the time to bleed - off a reservoir of 100 l charged to a pressure of 10 bar, using a test assembly as shown in Figure 6. 5.3.4.1.2 Preliminary phase for Operations 1 and 2 The isolating cock (1) is closed, and the 100 l reservoir is charged by opening the isolating cock (4), and closing it when the reservoir is charged to 10 bar. 5.3.4.1.3 Operation 1 Open isolating cock (1) and measure the time t1 for the pressure to fall from 9 bar to 1 bar, as indicated by the transducer (2). For operation 2, replace the control pipe with the end cock to be tested ensuring the handle is in the open position. Operation 2 has to be performed in both flow directions of the test specimen. 5.3.4.1.4 Operation 2 Open isolating cock (1) and measure the time t2 for the pressure to fall from 9 bar to 1bar as indicated by the transducer. Repeat the test. 5.3.4.1.5 Pass/fail criteria The result is satisfactory if t2 is smaller or equal to the average t1. SIST EN 14601:2005
EN 14601:2005 (E) 15 = b= 1,5b= 1,5bL1 + L2
1 000 mmL = 100 mmL1LL2100 l12453
Key b internal diameter of 25 mm 3 Air 10 bar 1 Isolating cock Ø ≥ 1,5 b 4 Isolating cock 2 Transducer for pressure / time diagram 5 Calibration piece (see Figure 6c)) (Figure 6a — Operation 1) = 1,5b= 1,5bL1 + L2
1 000 mmL1L2100 l15234 Key 1 Isolating cock Ø ≥ 1,5 b 4 Isolating cock 2 Transducer for pressure / time diagram 5 End cock to be tested 3 Air 10 bar
(Figure 6b — Operation 2)
SIST EN 14601:2005
EN 14601:2005 (E) 16 Dimensions in millimetres G1-ISO 228-225 H730f610401006,36,3
(Figure 6c — Calibration piece)
Figure 6 — Measurement of pressure fall time 5.3.4.2 Measurement of fall time t
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.