1、BSI Standards PublicationBS EN 14422:2013Clamp type couplingassemblies for liquefiedpetroleum gas (LPG) transferhosesBS EN 14422:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14422:2013. Itsupersedes BS EN 14422:2004 which is withdrawn.The UK participatio
2、n in its preparation was entrusted to TechnicalCommittee PRI/66, Rubber and plastics tubing, hoses and hoseassemblies.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contrac
3、t. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 72874 7ICS 23.040.70Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authorit
4、y of theStandards Policy and Strategy Committee on 31 July 2013.Amendments issued since publicationDate Text affectedBS EN 14422:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14422 June 2013 ICS 23.040.70 Supersedes EN 14422:2004English Version Clamp type coupling assemblies for liquefied
5、 petroleum gas (LPG) transfer hoses Raccords avec collier de serrage pour flexibles de transvasement de gaz de ptrole liqufi (GPL) Schlaucharmaturen mit Klemmfassung fr Schluche zur bergabe von Flssiggas (LPG) This European Standard was approved by CEN on 8 May 2013. CEN members are bound to comply
6、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 Ma
7、nagement 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
8、status as the official 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, M
9、alta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All righ
10、ts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14422:2013: EBS EN 14422:2013EN 14422:2013 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 Requirements .5 4.1 General 5 4.2 Resistance of the fitti
11、ng materials to the fluid 6 4.3 Maximum working pressures and temperatures 6 4.4 Welding connections .6 5 Dimensions and designation 6 5.1 Dimensions .6 5.2 Ordering designation system 17 6 Materials 17 6.1 General . 17 6.2 Hose tails and union nuts 17 6.3 Weld-neck collars and weld-neck flanges 18
12、6.4 Loose flanges 18 6.5 Clamp shells 19 6.6 Surface finish 19 6.7 Thread gasket 19 7 Marking 19 8 Type testing and quality control . 19 8.1 General . 19 8.2 Type-test 20 8.3 Sampling 20 9 Mounting of hose fittings . 20 Bibliography . 21 BS EN 14422:2013EN 14422:2013 (E) 3 Foreword This document (EN
13、 14422:2013) has been prepared by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the lat
14、est by December 2013, and conflicting national standards shall be withdrawn at the latest by December 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or al
15、l such patent rights. This document supersedes EN 14422:2004. In comparison to EN 14422:2004, the following changes have been made: The Scope has been extended and the working temperature ranges have been defined for normal and low temperature operation. In Clause 2, the normative references have be
16、en updated. Clause 3 “Terms and definitions“ has been amended. Clause 4 “Requirements“ has been revised. In Clause 6, all material lists have been revised. In Clause 7, the requirements for marking have been revised. Clause 8 regarding type testing and quality control has been restructured and amend
17、ed. The Bibliography has been reviewed. The standard has been revised editorially. 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 Repu
18、blic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS E
19、N 14422:2013EN 14422:2013 (E) 4 1 Scope This European Standard specifies the dimensions, designation, materials, marking and testing requirements for a range of hose fittings which may be used with rubber/plastic hoses for the transfer of liquefied petroleum gas, LPG, in liquid or vapour phase and n
20、atural gas. The maximum working pressure is 25 bar1). For normal operation the working temperature range is from 30 C up to 70 C and for low temperature operation (LT) it is from 50 C up to 70 C. The nominal size for hose fittings with internal and external threads is from DN 15 to DN 75 and for hos
21、e fittings with flanges DN 15 to DN 200. In addition to the fittings described in this European Standard, threaded connections according to EN 14420-5 as well as hose fittings with screwed ferrules according to EN 14424 up to DN 25 for LPG could be used. 2 Normative references The following document
22、s, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 15614-1, Specification
23、 and qualification of welding procedures for metallic materials Welding procedure test Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1) EN 1092-1, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part
24、1: Steel flanges EN 1759-1, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, Class designated Part 1: Steel flanges, NPS 1/2 to 24 EN 10025-2, Hot rolled products of structural steels Part 2: Technical delivery conditions for non-alloy structural steels EN 10028
25、-2, Flat products made of steels for pressure purposes Part 2: Non-alloy and alloy steels with specified elevated temperature properties EN 10087, Free-cutting steels Technical delivery conditions for semi-finished products, hot-rolled bars and rods EN 10088-1, Stainless steels Part 1: List of stain
26、less steels EN 10216-1, Seamless steel tubes for pressure purposes Technical delivery conditions Part 1: Non-alloy steel tubes with specified room temperature properties EN 10283, Corrosion resistant steel castings EN 12164, Copper and copper alloys Rod for free machining purposes EN 12168, Copper a
27、nd copper alloys Hollow rod for free machining purposes EN 12420, Copper and copper alloys Forgings 1) 1 bar = 0,1 MPa. BS EN 14422:2013EN 14422:2013 (E) 5 EN 14420-2, Hose fittings with clamp units Part 2: Hose side parts of hose tail EN 14420-3, Hose fittings with clamp units Part 3: Clamp units,
28、bolted or pinned EN ISO 4042:1999, Fasteners Electroplated coatings (ISO 4042:1999) EN ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary (ISO 8330) ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality level (AQL) for lot
29、-by-lot inspection 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 8330 and the following apply. 3.1 DN (nominal size) alphanumeric designation of size for components of a pipework system, which is used for reference purposes, and which comprises
30、the letters DN followed by a dimensionless whole number which is indirectly related to the physical size, in millimetres, of the bore or outside diameter of the end connections Note 1 to entry: The number following the letters DN does not represent a measurable value and should not be used for calcu
31、lation purposes except where specified in the relevant standard. Note 2 to entry: In those standards which use the DN designation system, any relationship between DN and component dimensions should be given, e.g. DN/OD or DN/ID. SOURCE: EN ISO 6708:1995, 2.1 3.2 liquefied petroleum gas LPG low press
32、ure gas composed of one or more light hydrocarbons which are assigned to UN 1011, UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane, butane isomers, butene with traces of other hydrocarbon gases SOURCE: EN 15202:2012, 3.1 3.3 thread gasket flat faced gas
33、ket for threads according to EN ISO 228-1 4 Requirements 4.1 General Hose fittings shall withstand the mechanical and chemical loads and shall be impermeable and resistant to flammable liquefied petroleum gas (LPG) and natural gas. Hose fittings shall be designed such that they establish a frictiona
34、l and positive-locking tight connection on the hose. Hose fittings shall be designed so that if an overstress occurs, the hose is destroyed first before being torn out from the fitting. Only ductile metallic materials shall be used. BS EN 14422:2013EN 14422:2013 (E) 6 Hose side fitting components sh
35、all not cause any dangerous notch or shear stresses on the hose. The clamp units shall be widened at the end in order to obtain a flexing zone and shall be approximately 10 % longer than the connection pieces. 4.2 Resistance of the fitting materials to the fluid The material of hose fittings and gas
36、kets shall be selected regarding that the hose fittings and the gaskets used with them shall not be affected by the transferred medium. The fitting components may be surface protected, e.g. nickel-plated, zinc-plated, chrome-plated or by elastic coating. Details are to be agreed between purchaser an
37、d manufacturer. 4.3 Maximum working pressures and temperatures Maximum working pressures and temperatures are limited by the hoses and gaskets used. All hose fittings are applicable in the pressure range from at least -0,8 bar up to 25 bar. A working temperature range from 30 C up to 70 C or for low
38、 temperature from 50 C up to 70 C shall apply. 4.4 Welding connections The manufacturer shall have a welding procedure qualification for the welding procedure specification selected according to EN ISO 15614-1 (for steel). Welding connections shall be non-destructively tested. NOTE 1 Further details
39、 on the welding connections can be agreed. NOTE 2 The weld-end preparation depends on the welding procedure and this can be agreed upon at the order stage. 5 Dimensions and designation 5.1 Dimensions Figure 1 to Figure 9 are shown as examples and are not intended to be conformed to; only the fixed d
40、imensions in Table 1 to Table 9 shall be used. Details which are not specified are to be chosen by the manufacturer. BS EN 14422:2013EN 14422:2013 (E) 7 Dimensions in millimetres aClamp unit shall be according to EN 14420-3. bMale part hose fitting cFemale part hose fitting with collar for union nut
41、 dFemale part hose fitting with internal thread eUnion nut Figure 1 Hose fittings with internal and external thread Table 1 Dimensions for hose fitting with internal and external thread Dimensions in millimetres Nominal size DN Hose inside diameter d d1l l1connecting thread connecting thread 15 13 “
42、NPT “NPT 73 74 1“ACME 77 20 19 “NPT “NPT 76 75 1“NPT 1“NPT 79 79 1“ACME 77 25 25 1“NPT 1“NPT 79 79 1“ACME 1“NPT 77 32 32 1“NPT 1“NPT 79 1“NPT 1“NPT 1“ACME 1“NPT 77 80 2“ACME 80 40 38 1“NPT 1“NPT 80 2“ACME 50 50 1“NPT 1“NPT 85 85 2“NPT 2“NPT 86 87 3“ACME 96 75 75 3“NPT 2“NPT 1 360 1 200 3“ACME 3“NPT
43、1 170 1 410 BS EN 14422:2013EN 14422:2013 (E) 8 as = hexagonal or octagonal width across flats, with grooves or cams at the discretion of the manufacturer bHose tail shall be according to EN 14420-2, with or without ribs at the discretion of the manufacturer. Figure 2 Male part hose fitting Table 2
44、Dimensions for male part hose fitting Dimensions in millimetres Nominal size DN d1k l2l3s minimum minimum minimum minimum 15 “NPT 6,0 65,0 16 22 20 “NPT 66,0 17 27 1“NPT 70,0 20 36 25 1“NPT 1“NPT 21 46 32 1“NPT 41 1“NPT 46 1“NPT 6,5 71,5 50 40 1“NPT 71,0 50 1“NPT 77,5 60 2“NPT 79,5 22 75 2“NPT 7,5 1
45、10 85 3“NPT 112 30 NOTE Threaded connections above nominal size DN 75 not in use. Above nominal size DN 75 flanges are the preferred connection type. BS EN 14422:2013EN 14422:2013 (E) 9 Type A, with collar for union nut Type B, with collar for union nut Type C, with internal thread as = hexagonal or
46、 octagonal bHose tail shall be according to EN 14420-2, with or without ribs at the discretion of the manufacturer. Figure 3 Female part hose fitting BS EN 14422:2013EN 14422:2013 (E) 10 Table 3 Dimensions for female part hose fitting Dimensions in millimetres Nominal size DN d ad2d3d4b b1k1l4l5s 0,
47、2 0,2 0,1 min. min. min. min. 0,5 min. 15 “NPT 21,0 64,0 13,5 27 1“ACME 39,6 35,5 32,3 4,0 10,0 61,0 19,0 20 “NPT 24,0 67,0 14,0 32 1“NPT 27,0 70,0 17,0 41 1“ACME 39,6 35,5 32,3 4,0 10,0 61,0 19,0 25 1“NPT 27,0 70,0 17,0 41 1“ACME 39,6 35,5 32,3 4,0 10,0 61,0 19,0 32 1“NPT 27,0 70,0 17,0 41 1“NPT 27
48、,5 70,5 17,5 50 1“ACME 39,6 35,5 32,3 4,0 10,0 61,0 19,0 2“ACME 51,0 43,0 44,5 5,0 12,0 59,0 17,0 40 1“NPT 27,5 70,5 17,5 55 2“ACME 51,0 43,0 44,5 5,0 12,0 59,0 17,0 50 1“NPT 27,5 77,5 17,5 55 2“NPT 28,0 78,0 18,0 70 3“ACME 70,0 61,0 53,0 7,5 20,5 74,5 25,5 75 3“NPT 50,0 127,00 26,0 108b3“ACME 92,5 aInternal thread or collar for union nut. bNo width across flats, but diameter. BS EN 14422:2013EN 14422:2013 (E) 11 Dimensions in millimetres Type A 1“ ACME Type B 2 ”ACME Type B 3 ”ACME aHexagonal or octagonal bAt the discretion of the manufacturer cCams Figure 4 Union n
