1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Respiratory protective devices - Gas cylinder valvesPart 1: Inlet connectionsBS EN 1441:2018National forewordThis British Standard is the UK implementation of EN 1441:2018. It supersedes BS EN 1441:2000, which is withdr
2、awn.The UK participation in its preparation was entrusted to Technical Committee PH/4, Respiratory protection.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Use
3、rs are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 93548 0ICS 13.340.30Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority o
4、f the Standards Policy and Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 1441:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 144-1April 2018ICS 13.340.30 Supersedes EN 1441:2000EUROPEAN COMMITTEE FOR STANDARDIZATIONCO
5、MIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN 1441:2018: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersRespiratory protective devices Gas cylinder v
6、alves Part 1: Inlet connectionsAppareils de protection respiratoire Robinets de bouteille gaz Partie 1: Raccordements dentreAtemschutzgerte - Gasflaschenventile Teil 1: EingangsanschlsseThis European Standard was approved by CEN on 19 February 2018.CEN members are bound to comply with the CEN/CENELE
7、C Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Uptodate lists and bibliographical references concerning such national standards may be obtained on application to the CENCENELEC Management Centre or to
8、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
9、versions.CEN members are the national standards bodies of 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, Norwa
10、y, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 144-1:2018 (E)European foreword 31 Scope . 42 Normative references 43 Terms and definitions . 44 Dimensional and tolerance requirements . 44.1 General . 44.2 Parallel thr
11、eads M18x1,5 and M25x2 44.3 Taper thread 17E . 55 Impact resistance . 55.1 General . 55.2 Testing 56 Marking 67 Information supplied by the manufacturer . 7Bibliography 82Contents PageBS EN 1441:2018EN 144-1:2018 (E)European forewordThis document (EN 144-1:2018) has been prepared by Technical Commit
12、tee CEN/TC 79 “Respiratory protective devices”, 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 October 2018, and conflicting national standards shall be wi
13、thdrawn at the latest by October 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN not be held responsible for identifying any or all such patent rights.This document supersedes EN 1441:2000.The following main technical cha
14、nges have been made compared to EN 1441:2000:a) Title changes to read “Respiratory protective devices Gas cylinder valves Part 1: Inlet connections” to be in line with Part 2 and Part 3;b) Terms and definition added;c) Normative references EN ISO 11363-1 and EN ISO 15245-1 added to replace Clause 2
15、“Connection on insert connector”;d) Clause 3 “Impact resistance” adapted to the test specified in EN ISO 10297:2014, Annex A.This document is one part of a threepart standard concerning connections for gas cylinder valves for respiratory protective devices: Part 1: Inlet connections Part 2: Outlet c
16、onnections Part 3: Outlet connections for diving gases Nitrox and oxygenAccording to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denma
17、rk, 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.3BS EN 1
18、441:2018EN 144-1:2018 (E)1 ScopeThis document specifies the dimensions and tolerances as well as the impact resistance and marking requirements of inlet connections for connecting cylinder valves to gas cylinders for respiratory protective devices (RPD).2 Normative referencesThe following documents
19、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 ISO 11363-1, Gas cy
20、linders 17E and 25E taper threads for connection of valves to gas cylinders Part 1: Specifications (ISO 11363-1)EN ISO 13341, Gas cylinders Fitting of valves to gas cylinders (ISO 13341)EN ISO 152451, Gas cylinders Parallel threads for connection of valves to gas cylinders Part 1: Specification (ISO
21、 15245-1)3 Terms and definitionsFor the purposes of this document, the following terms and definitions 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: a
22、vailable at http:/www.iso.org/obp3.1working pressuresettled pressure of a compressed gas at a uniform reference temperature of 15 C in a full gas cylinder, in barNOTE Common working pressures are 200 bar, 232 bar and 300 bar.SOURCE: EN ISO 10286:2015, 736, modified, Note 1 to entry to Note 3 to entr
23、y deleted, New Note 1 to entry included4 Dimensional and tolerance requirements4.1 GeneralFor respiratory protective devices only the thread connections M18x1,5 or M25x2 or 17E shall be used.NOTE M18x1,5 or M25x2 are the preferred thread connections.Cylinder valves with a thread connection according
24、 to this European Standard shall not be used with an adaptor between the cylinder valve and the gas cylinder.4.2 Parallel threads M18x1,5 and M25x2The parallel threads M18x1,5 and M25x2 shall meet EN ISO 152451.NOTE As there are other standards which define the above threads, ISO/TR 11364 gives guid
25、ance concerning which threads are dimensionally identical and which are interchangeable.4 BS EN 1441:2018EN 144-1:2018 (E)4.3 Taper thread 17EThe taper thread 17E shall meet EN ISO 11363-1.NOTE As there are other standards which define the above thread, ISO/TR 11364 gives guidance concerning which t
26、hreads are dimensionally identical and which are interchangeable.5 Impact resistance5.1 GeneralThe strength of the material of the connection between the gas cylinder and the cylinder valve shall withstand impact energy of (120 3) J.Two assembled cylinder valves excluding the activating means (e.g.
27、hand wheels) shall be tested.Distortion due to impact and visual displacement of the sealing means of the valve inlet connection is permissible. After impact, the cylinder valve shall withstand a hydraulic pressure test and an internal tightness test. The total leakage (comprising that from the valv
28、e internal sealing system plus that from the threaded joint between the cylinder valve and the cylinder/test fixture) shall not exceed 180 cm3/h.Any leakage shall not result from cracking of the valve body. In addition the test sample shall remain capable of being opened for emergency venting purpos
29、es by hand or by using a simple tool or actuating connector (e.g. a valve key).5.2 TestingThe test sample shall be tested in the closed condition as specified by the manufacturer. The test sample shall be fitted into a steel gas cylinder neck, or a similar test fixture made of steel equipped with th
30、e corresponding screw thread (see Figure 1). The procedure to fit the test sample into the cylinder or test fixture shall meet EN ISO 13341 or shall follow the information supplied by the manufacturer.For the relevant thread and torque ranges, the minimum and maximum torque values, independent of th
31、e cylinder material used, shall be applied. One test sample shall be fitted using the minimum value and the second test sample using the maximum value according to EN ISO 13341 or as specified by the information supplied by the manufacturer.It has to be verified that the threaded joint between the t
32、est sample and the cylinder/test fixture does not leak before impact testing by using leak detection spray or other appropriate means.The test sample shall be vertically struck by an impact weight, tipped with a 13 mm diameter hardened steel ball. The impact weight shall have a minimum mass of 10 kg
33、. The test sample shall be struck once.The impact shall occur at 90 to the longitudinal axis of the test sample and coincident with a plane passing through the same axis. The point of impact shall be at twothirds of the distance, L, from the plane where the valve inlet connection thread meets the cy
34、linder (cylinder top) to the furthest point of the cylinder valve body excluding the valve spindle, measured along the longitudinal (valve inlet connection) axis of the cylinder valve (see Figure 1).Based on the cylinder valve design, the point of impact shall be unobstructed. Examples of obstructio
35、ns include gauges, outlet connecting threads and pressurerelief devices. If the point of impact cannot be used (e.g. due to installed features), a different point of impact shall be chosen by rotation. If the point chosen by rotation is still obstructed, an alternate point of impact shall be chosen
36、and the equivalent energy value and tolerance shall be calculated and applied.For safety reasons, the test sample remaining in the closed position shall be hydraulically pressure tested with a test pressure of 1,2 times working pressure. Water or another suitable liquid shall be used as test medium.
37、 The hydraulic pressure shall be applied via the valve inlet connection and gradually increased until the test pressure is reached. The pressure shall be maintained for at least 2 min.5BS EN 1441:2018EN 144-1:2018 (E)Following the hydraulic pressure test, the same test sample, remaining in the close
38、d position, shall undergo an internal leak tightness test at the same test pressure as for the hydraulic pressure test, using compressed air. The pressure shall be applied via the valve inlet connection and be increased until the test pressure is reached.After a minimum of 1 min the leakage rate sha
39、ll be measured.Key1 striker2 hardened steel ball, diameter 13 mm3 Oring joint4 valve body5 test fixture or gas cylindera longitudinal axisFigure 1 Impact test6 MarkingCylinder valves meeting the requirements of this European Standard shall be marked with:a) the number of this document, i.e. EN 144-1
40、;NOTE Where the cylinder valve also meets the requirements of EN 1442 a combined marking, i.e. EN 1441/2 can be used.b) means of identification of the manufacturer;c) the date of manufacture (at least the year);6 BS EN 1441:2018EN 144-1:2018 (E)d) the thread type identification 18P for M18x1,5 or 25
41、P for M25x2 according to EN ISO 15245-1 or 17E according to EN ISO 11363-1.NOTE With regard to d), it is possible to differentiate between the marking in EN 144-1:2000 and the marking in this document.7 Information supplied by the manufacturerOn delivery, information shall make reference to the info
42、rmation supplied by the manufacturer for that device, where a cylinder valve is used.7BS EN 1441:2018EN 144-1:2018 (E)Bibliography1 ISO/TR 11364, Gas cylinders Compilation of national and international valve stem/gas cylinder neck threads and their identification and marking system2 EN ISO 10286:201
43、5, Gas cylinders Terminology (ISO 10286:2015)8 BS EN 1441:2018This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter
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