BS EN 1762-2017 Rubber hoses and hose assemblies for liquefied petroleum gas LPG (liquid or gaseous phase) and natural gas up to 25 bar (2 5 MPa) Specification《25巴(2 5MPA)以下液化石油气(L.pdf

1、BS EN 1762:2017Rubber hoses and hoseassemblies for liquefiedpetroleum gas, LPG (liquid orgaseous phase), and naturalgas up to 25 bar (2,5 MPa) SpecificationBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 1762:2017 BRITISH STANDARDNational forewordThis British S

2、tandard is the UK implementation of EN 1762:2017. It supersedes BS EN 1762:2003 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies.A list of organizations represented on this committee can be o

3、btained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 88452 8 ICS 23.040.70 Complianc

4、e with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 1762:2017EUROPEAN STANDARD N

5、ORME EUROPENNE EUROPISCHE NORM EN 1762 March 2017 ICS 23.040.70 Supersedes EN 1762:2003English Version Rubber hoses and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous phase), and natural gas up to 25 bar (2,5 MPa) - Specification Tuyaux et flexibles en caoutchouc pour le gaz de

6、ptrole liqufi GPL (en phase liquide ou gazeuse) et le gaz naturel jusqu 25 bar (2,5 MPa) - Spcification Gummischluche und -schlauchleitungen fr Flssiggas LPG (flssig oder gasfrmig) und Erdgas bis 25 bar (2,5 MPa) - Spezifikation This European Standard was approved by CEN on 11 December 2016. CEN mem

7、bers 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 applicat

8、ion 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 Manage

9、ment 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

10、 Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue

11、 Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1762:2017 EBS EN 1762:2017EN 1762:2017 (E) 2 Contents Page European foreword 4 1 Scope . 5 2 Normative references . 5 3 Terms and definitions 6 4 Clas

12、sification 6 5 Materials and construction . 7 5.1 Hose . 7 5.2 Hose assemblies 7 6 Dimensions . 7 6.1 Nominal bore, internal diameters, outside diameters, tolerances, and minimum bend radius . 7 Table 1 Dimensions and tolerances of hoses of types D and D-LT 8 Table 2 Dimensions and tolerances of hos

13、es of types SD, SD-LTS and SD-LTR . 9 6.2 Minimum thickness of lining and cover . 9 6.3 Concentricity 9 6.4 Tolerances on length. 9 7 Physical properties . 10 7.1 Rubber Compounds 10 Table 3 Physical properties of compounds. 10 7.2 Finished hose and hose assemblies 11 Table 4 Physical properties of

14、finished hose and hose assemblies . 11 8 Electrical properties 12 8.1 General 12 8.2 Textile reinforced hoses with bonding wires . 12 8.3 Textile reinforced hoses with conducting materials 13 8.4 Wire helix reinforced hoses 13 8.4.1 Grade M-hoses (see 8.2) 13 8.4.2 Grade -hoses (see 8.3) 13 8.5 Hose

15、 assemblies that are required to be discontinuous . 13 9 Type testing . 13 10 Frequency of testing . 13 11 Marking . 14 11.1 Hoses 14 11.2 Hose assemblies. 14 Annex A (normative) Flammability test . 15 A.1 Method 15 A.2 Assessment 15 BS EN 1762:2017EN 1762:2017 (E) 3 Figure A.1 Arrangement for flamm

16、ability test . 16 Annex B (normative) Test frequency . 17 Table B.1 Type and routine tests 17 Annex C (informative) Test frequency 19 Table C.1 Recommended test frequency (Production acceptance tests) . 19 BS EN 1762:2017EN 1762:2017 (E) 4 European foreword This document (EN 1762:2017) has been prep

17、ared by Technical Committee CEN/TC 218 “Rubber and plastic 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 latest by September 2017, and

18、conflicting national standards shall be withdrawn at the latest by September 2017. 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 supe

19、rsedes EN 1762:2003. Compared to EN 1762:2003 the following changes have been made: a) Clause 2: The normative references have been updated; b) Table 3 has been technically amended (property no. 5); in accordance with corrigendum EN 1762:2003/AC of November 2007. c) Clause 8.4 has been divided into

20、8.4.1 and 8.4.2 to clarify the requirements for the 2 different grades of M and hoses d) Clause 9: The text has been amended editorially; e) Clause 10: The text has been amended editorially; f) Clause 11.1: The text has been amended editorially. Annex A and B are normative. Annex C is informative. A

21、ccording 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, Germ

22、any, 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. BS EN 1762:2017EN 1762:2017 (E) 5 1 Scope This European Standard specifies the r

23、equirements for rubber hoses and rubber hose assemblies used for the transfer of liquefied petroleum gas (LPG) in liquid or gaseous phase and natural gas with a maximum working pressure of 25 bar (2,5 MPa) and vacuum within the temperature range of 30 C to +70 C and, when designated -LT, 50 C to +70

24、 C. 2 Normative references The following documents, 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 a

25、mendments) applies. EN 1360, Rubber and plastic hoses and hose assemblies for measured fuel dispensing systems - Specification EN ISO 8033, Rubber and plastics hoses - Determination of adhesion between components (ISO 8033) EN ISO 1402, Rubber and plastics hoses and hose assemblies - Hydrostatic tes

26、ting (ISO 1402) EN ISO 10619-1, Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 1: Bending tests at ambient temperature (ISO 10619-1) EN ISO 4671, Rubber and plastics hoses and hose assemblies - Methods of measurement of the dimensions of hoses and the lengths

27、of hose assemblies (ISO 4671) EN ISO 10619-2, Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2: Bending tests at sub-ambient temperatures (ISO 10619-2) EN ISO 7233, Rubber and plastics hoses and hose assemblies - Determination of resistance to vacuum (ISO 7233

28、) EN ISO 7326, Rubber and plastics hoses - Assessment of ozone resistance under static conditions (ISO 7326) EN ISO 8031, Rubber and plastics hoses and hose assemblies - Determination of electrical resistance and conductivity (ISO 8031) EN ISO 8330, Rubber and plastics hoses and hose assemblies - Vo

29、cabulary (ISO 8330) ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile stress-strain properties ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 1817, Rubber, vulcanized or thermoplastic Determination of the effect of liquids ISO 4649, R

30、ubber, vulcanized or thermoplastic Determination of abrasion resistance using a rotating cylindrical drum device BS EN 1762:2017EN 1762:2017 (E) 6 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 electrically bonde

31、d hose/hose assembly hose/hose assembly that uses a metallic wire connection to conduct static electricity 3.2 electrically conductive hose/hose assembly hose/hose assembly that is capable of conducting static electrical charges, using a conductive rubber layer, without the use of a metallic wire 3.

32、3 electrically discontinuous hose/hose assembly hose /hose assembly that incorporates a metallic wire connection to one end coupling of the assembly only or is electrically insulated from both end-couplings 4 Classification Hoses/hose assemblies for this application are classified into 5 types and 3

33、 grades according to their use, construction, and electrical properties. The maximum WP for all hoses/hose assemblies is 25 bar. Type Application D delivery hose D-LT delivery hose, low temperature; SD suction and delivery hose, helix reinforced SD-LTS suction and delivery hose “smooth hose”, helix

34、reinforced, low temperature SD-LTR suction and delivery hose, rough bore (having an internal, non-embedded helical wire of stainless steel), low temperature Hoses for this application are divided into 3 grades according to their electrical properties: Grade designation Electrical property M Electric

35、ally bonded Electrically conductive using a conductive rubber layer Discontinuous Electrically discontinuous BS EN 1762:2017EN 1762:2017 (E) 7 5 Materials and construction 5.1 Hose The hose shall consist of the following: a lining of synthetic rubber resistant to n-pentane; a reinforcement of layers

36、 of woven, braided or spirally wound textile material or braided or spirally wound stainless steel wire, an embedded stainless steel metallic helix reinforcement (types SD, SD-LTS and SD-LTR only); two or more low resistance electrical bonding wires (grade “M” only); an outer cover of black or colou

37、red synthetic rubber, resistant to abrasion and outdoor exposure, the cover being pricked to allow gas permeation; an internal, non-embedded stainless steel helical wire, suitable for use at 50 C (type SD-LTR only). 5.2 Hose assemblies Hose assemblies shall incorporate metallic couplings attached to

38、 the hose by the assembler or built in by the manufacturer. In order to produce the required electrical properties, the couplings should be attached in accordance with Clause 8. Chlorinated materials shall not be used in contact with any stainless steel materials. 6 Dimensions 6.1 Nominal bore, inte

39、rnal diameters, outside diameters, tolerances, and minimum bend radius For hoses without built-in couplings, and when measured in accordance with method A of EN ISO 4671, the internal diameter and outside diameter and their tolerances shall conform to Table 1 or Table 2, depending on the type. For h

40、oses with built-in couplings, the outside diameters in Tables 1 and 2 do not apply. When tested by the method described in EN ISO 10619-1, the value of the minimum bend radius shall be as given in Table 1 or Table 2, depending on the type. BS EN 1762:2017EN 1762:2017 (E) 8 Table 1 Dimensions and tol

41、erances of hoses of types D and D-LT Nominal bore Internal diameter mm Tolerance mm Outside diameter mm Tolerance mm Design minimum bend radius* mm 12 12,7 0,5 22,7 1,0 100 15 15 0,5 25 1,0 120 16 15,9 0,5 25,9 1,0 125 19 19 0,5 31 1,0 160 25 25 0,5 38 1,0 200 32 32 0,5 45 1,0 250 38 38 0,5 52 1,0 3

42、20 50 50 0,6 66 1,2 400 51 51 0,6 67 1,2 400 63 63 0,6 81 1,2 550 75 75 0,6 93 1,2 650 76 76 0,6 94 1,2 650 80 80 0,6 98 1,2 725 100 100 1,6 120 1,6 800 150 150 2,0 174 2,0 1200 200 200 2,0 224 2,0 1600 250 254 2,0 2000 300 305 2,0 2500 *) The design minimum bend radius is measured to the surface of

43、 the hose on the inside of the bend. BS EN 1762:2017EN 1762:2017 (E) 9 Table 2 Dimensions and tolerances of hoses of types SD, SD-LTS and SD-LTR Nominal bore Internal diameter mm Tolerance mm Outside diameter mm Tolerance mm Design minimum bend radius* mm 12 12,7 0,5 22,7 1,0 90 15 15 0,5 25 1,0 95

44、16 15,9 0,5 25,9 1,0 95 19 19 0,5 31 1,0 100 25 25 0,5 38 1,0 150 32 32 0,5 45 1,0 200 38 38 0,5 52 1,0 280 50 50 0,6 66 1,2 350 51 51 0,6 67 1,2 350 63 63 0,6 81 1,2 480 75 75 0,6 93 1,2 550 76 76 0,6 94 1,2 550 80 80 0,6 98 1,2 680 100 100 1,6 120 1,6 720 150 150 2,0 174 2,0 1000 200 200 2,0 224 2

45、,0 1400 250 254 2,0 1750 300 305 2,0 2100 *) The design minimum bend radius is measured to the surface of the hose on the inside of the bend. NOTE Nominal bores 250 and 300 apply to hoses with built-in couplings only. 6.2 Minimum thickness of lining and cover When measured in accordance with EN ISO

46、4671, the minimum thickness of both the lining and cover of all hoses shall be 1,6 mm. Not applicable to hose assemblies with built-in couplings 6.3 Concentricity When measured in accordance with EN ISO 4671, the concentricity based on a total indicator reading shall be 1,0 mm for hoses of nominal b

47、ore 1276 and 1,5 mm for hoses of nominal bore 80200. Not applicable to hose assemblies with built-in couplings 6.4 Tolerances on length The tolerances on the measured length of hoses and hose assemblies shall be 1 %. BS EN 1762:2017EN 1762:2017 (E) 10 7 Physical properties 7.1 Rubber Compounds The p

48、hysical properties of the rubber compounds used for the lining and cover shall comply with the values given in Table 3, when tested by the methods listed in Table 3. Tests shall be carried out either on samples taken from the hose or from separately vulcanized sheets, vulcanized to the same state as

49、 the hose. Table 3 Physical properties of compounds Property Unit Requirements Method of test Lining Cover 1. Min. tensile strength MPa 10 10 ISO 37 (dumb-bell test piece) 2. Min. elongation at break % 250 250 ISO 37 (dumb-bell test piece) 3.Max. abrasion resistance For black hoses For coloured hoses mm3170 500aISO 4649, Method A 4. Ageing ISO 188 (14 days at +70 C, air-oven method) Max. hardness change from original value IRHD