ISO 4642-2-2015 Rubber and plastics hoses non-collapsible for fire-fighting service - Part 2 Semi-rigid hoses (and hose assemblies) for pumps and vehicles《消防设备用.pdf

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1、 ISO 2015 Rubber and plastics hoses, non- collapsible, for fire-fighting service Part 2: Semi-rigid hoses (and hose assemblies) for pumps and vehicles Tuyaux en caoutchouc et en plastique, non aplatissables, pour la lutte contre lincendie Partie 2: Tuyaux (et flexibles) semi-rigides pour pompes et v

2、hicules INTERNATIONAL STANDARD ISO 4642-2 Second edition 2015-12-01 Reference number ISO 4642-2:2015(E) ISO 4642-2:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may b

3、e reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the re

4、quester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO 4642-2:2015(E)Foreword v Introduction vi 1 Scope . 1 2 Normative references 1 3 Terms and definitions . 2 4 Classification 2 4.1 G

5、eneral . 2 4.2 Classification by types (hose construction) . 2 4.3 Classification by class (materials for lining and cover) . 2 4.4 Classification by category 3 5 Dimensions, tolerances and maximum mass . 3 5.1 Inside diameter and maximum mass. 3 5.2 Length and tolerances on length . 3 5.3 Concentri

6、city. 4 6 Performance requirements of finished hose 4 6.1 Hydrostatic requirements . 4 6.1.1 Deformation under maximum working pressure . 4 6.1.2 Deformation under proof pressure 4 6.1.3 Minimum burst pressure 4 6.1.4 Kink pressure 4 6.2 Adhesion . 4 6.3 Accelerated ageing . 5 6.4 Abrasion resistanc

7、e . 5 6.4.1 General 5 6.4.2 Abrasion resistance of class 5 and class 6 hoses 5 6.4.3 Abrasion resistance of classes 1, 2, 3 and 4 hoses 5 6.5 Low temperature flexibility . 5 6.6 Hot surface resistance 5 6.7 Ozone resistance 6 6.8 Bending and crush resistance 6 6.9 UV resistance (xenon arc lamp) . 6

8、6.10 Loss in mass on heating 6 6.11 Deformation under crushing (type C only) 6 6.12 Hose assemblies . 6 7 Frequency of testing 6 8 Type tests . 7 9 Test report . 7 10 Recommendation for packaging and storage . 7 11 Marking 7 Annex A (normative) Kink pressure test 8 Annex B (normative) Accelerated ag

9、eing test . 9 Annex C (normative) Surface abrasion resistance test 10 Annex D (normative) Point abrasion resistance test 12 Annex E (normative) Hot surface resistance test .15 Annex F (normative) Bending and crush resistance test .20 Annex G (normative) Deformation under crushing test .22 ISO 2015 A

10、ll rights reserved iii Contents Page ISO 4642-2:2015(E)Annex H (normative) Adhesion test (lay-flat fire-fighting hoses) .24 Annex I (normative) Test for fire-fighting hose assemblies 26 Annex J (normative) Type test and routine test .27 Annex K (informative) Production tests 28 Bibliography .29 iv I

11、SO 2015 All rights reserved ISO 4642-2:2015(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each me

12、mber body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International E

13、lectrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different typ

14、es of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be

15、 held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is inform

16、ation given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see th

17、e following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 1, Rubber and plastics hoses and hose assemblies. This second edition cancels and replaces the first edition (ISO 4642-2:2009), of which it cons

18、titutes a minor revision. ISO 4642 consists of the following parts, under the general title Rubber and plastics hoses, non-collapsible, for fire-fighting service: Part 1: Semi-rigid hoses for fixed systems Part 2: Semi-rigid hoses (and hose assemblies) for pumps and vehicles ISO 2015 All rights rese

19、rved v ISO 4642-2:2015(E) Introduction This part of ISO 4642 is mainly concerned with fire service semi-rigid delivery hoses and incorporates those hoses used manually to control and extinguish fires.vi ISO 2015 All rights reserved Rubber and plastics hoses, non-collapsible, for fire- fighting servi

20、ce Part 2: Semi-rigid hoses (and hose assemblies) for pumps and vehicles 1 Scope This part of ISO 4642 specifies the requirements and test methods for semi-rigid reel hoses for use on fire-fighting vehicles and trailer pumps. The hoses are intended for use at a maximum working pressure of 1,5 MPa fo

21、r normal pressure hoses (category I) and 4,0 MPa for high pressure hoses (category II). The hoses are further subdivided into types and classes (see Clause 4). This part of ISO 4642 applies to delivery hoses for fire-fighting purposes intended for use at a minimum ambient temperature of 20 C. Hoses

22、conforming to this part of ISO 4642 are intended to be used with fire hose couplings conforming to the relevant national standards couplings. Requirements are also given for hose assemblies (see 6.12) where these are fitted by the hose manufacturer. NOTE 1 Hoses for use at temperatures lower than 20

23、 C can be supplied by agreement between the manufacturer and purchaser. NOTE 2 All pressures are expressed in megapascals where 1 MPa = 10 bar. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application.

24、For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 176:2005, Plastics Determination of loss of plasticizers Activated carbon method ISO 188, Rubber, vulcanized or thermoplastic Accelerate

25、d ageing and heat resistance tests ISO 1307, Rubber and plastics hoses Hose sizes, minimum and maximum inside diameters, and tolerances on cut-to-length hoses ISO 1402, Rubber and plastics hoses and hose assemblies Hydrostatic testing ISO 4671:2007, Rubber and plastics hoses and hose assemblies Meth

26、ods of measurement of the dimensions of hoses and the lengths of hose assemblies ISO 7326:2006, Rubber and plastics hoses Assessment of ozone resistance under static conditions ISO 8033:2006, Rubber and plastics hoses Determination of adhesion between components ISO 8330, Rubber and plastics hoses a

27、nd hose assemblies Vocabulary ISO 10619-2:2011, Rubber and plastics hoses and tubing Measurement of flexibility and stiffness Part 2: Bending tests at sub-ambient temperatures INTERNATIONAL ST ANDARD ISO 4642-2:2015(E) ISO 2015 All rights reserved 1 ISO 4642-2:2015(E) 3 Terms and definitions For the

28、 purposes of this document, the terms and definitions given in ISO 8330 and the following apply. 3.1 semi-rigid hose hose that maintains its round cross-section even when unpressurized 4 Classification 4.1 General All types and classes of hose shall be so flexible that they can be rolled and kept on

29、 a drum of minimum diameter 200 mm for 12 mm inside diameter, 19 mm inside diameter and 25 mm inside diameter hose and of minimum diameter 280 mm for 33 mm inside diameter hose. Hoses shall be one of two categories distinguished by the maximum working pressure. Each hose shall be further divided int

30、o one of three types distinguished by its construction, and then into six classes distinguished by the materials used for lining and cover. NOTE The hose can be coloured by agreement between the purchaser and the manufacturer. 4.2 Classification by types (hose construction) 4.2.1 Type A hoses shall

31、consist of: a) a seamless rubber or plastics lining; b) a textile spiral or braided reinforcement; c) a rubber or plastics cover. 4.2.2 Type B hoses shall consist of: a) a seamless rubber or plastics lining; b) a circular woven textile reinforcement with a rigid spiral helix; c) an uncovered or rubb

32、er or plastics cover. 4.2.3 Type C hoses shall consist of: a) a seamless rubber or plastics lining; b) any suitable reinforcement; c) a rubber or plastics cover. NOTE While the construction of type A and type C hoses can be similar or even identical, the performance requirements differ for the follo

33、wing: burst and proof pressure, adhesion, hot surface resistance, crush resistance. 4.3 Classification by class (materials for lining and cover) The hose types shall be further subdivided into six classes dependent on the materials used in their construction, in accordance with Table 1.2 ISO 2015 Al

34、l rights reserved ISO 4642-2:2015(E) Table 1 Classes and materials Class Lining material Cover material 1 rubber rubber 2 plastics plastics 3 rubber plastics 4 plastics rubber 5 rubber no cover 6 plastics no cover 4.4 Classification by category All hoses shall be divided into two categories dependen

35、t on the maximum working pressure, in accordance with Table 2. Table 2 Maximum working pressure, proof pressure and minimum burst pressure Type of pressure Category I Category II MPa Types A and B Classes 1 to 6 Types A and B Classes 1 to 6 Type C Classes 1 to 6 Maximum working pressure 1,5 4,0 4,0

36、Proof pressure 3,0 6,0 8,0 Minimum burst pressure 4,7 10,0 12,0 EXAMPLE A type C hose, constructed with a rubber lining and rubber cover and which has a maximum working pressure of 4,0 MPa, a proof pressure of 8,0 MPa and a minimum burst pressure of 12,0 MPa is classified as II/C/1. 5 Dimensions, to

37、lerances and maximum mass 5.1 Inside diameter and maximum mass The inside diameter of the hose and tolerances, when measured in accordance with ISO 4671, using any suitable method stated in ISO 4671:2007, Clause 4, shall conform to the requirements given in Table 3. The mass per metre length of the

38、hose shall be in accordance with Table 3. Table 3 Inside diameter, tolerances on inside diameter and maximum mass per unit length Inside diameter Tolerances for inside diameter Mass per unit length mmmm kg/m Types A and C Type B Types A and C Type Bmax. max. 12 0 to +0,6 0,30 19 0 to +0,9 0 to +1,5

39、0,75 0,25 25 0 to +1,2 0 to +1,5 0,90 0,35 33 0 to +1,6 0 to +2,0 1,00 0,50 5.2 Length and tolerances on length The total length of hose supplied shall be in accordance with the purchasers requirements and shall be stated in metres. Tolerance on length shall be in accordance with ISO 1307. ISO 2015

40、All rights reserved 3 ISO 4642-2:2015(E) 5.3 Concentricity When tested in accordance with ISO 4671:2007, 8.3 (Method 2), the variation from concentricity measured between inside and outside diameters shall not exceed the following values: Types A and C 1,5 mm Type B 0,4 mm 6 Performance requirements

41、 of finished hose 6.1 Hydrostatic requirements 6.1.1 Deformation under maximum working pressure The dimensional stability of the hose, when tested in accordance with ISO 1402, shall conform to the requirements given in Table 4. The length of the test piece shall be 1 m. For category I hoses, the ini

42、tial test pressure shall be 0,07 MPa and the final test pressure shall be 1,5 MPa. For category II hoses, the initial test pressure shall be 0,07 MPa and the final test pressure shall be 4,0 MPa. The twist shall be no greater than 30 m 1for types A and C. For type B, the twist may be greater than 30

43、 m 1but in this case it shall only be in a direction which closes the coupling and shall be stated in the test report. Table 4 Change in length and external diameter Tolerances for types A, B and C % Change in length 0 to +7,5 Change in external diameter 0 to +7,5 NOTE Hose with a lower maximum chan

44、ge in length can be agreed between the purchaser and manufacturer. 6.1.2 Deformation under proof pressure A proof pressure hold test shall be carried out on three hose lengths each of 1 m in accordance with ISO 1402. The proof pressure shall be as given in Table 2 and, on examination during the test

45、, the test pieces shall not show any evidence of leakage, cracking, abrupt distortion or other signs of failure. 6.1.3 Minimum burst pressure A burst pressure test shall be carried out in accordance with ISO 1402 on the three test pieces used for the deformation under proof pressure test, until the

46、hose bursts. None of the test pieces shall burst at a pressure less than that given in Table 2. 6.1.4 Kink pressure When tested in accordance with Annex A, the test piece shall neither burst nor show any visible signs of defect before or after pressurizing at 1,5 MPa for category I hoses and at 4,0

47、MPa for category II hoses. 6.2 Adhesion When tested in accordance with Annex H the adhesion between all components shall be not less than 1,5 kN/m for type A hoses, 1,0 kN/m for type B hoses and 2,0 kN/m for type C hoses.4 ISO 2015 All rights reserved ISO 4642-2:2015(E) 6.3 Accelerated ageing When t

48、ested in accordance with Annex B, the three test pieces subjected to the burst pressure test shall conform to the requirements of 6.1.3. The mean of the burst pressure test results shall not decrease by more than 25 % from the initial mean burst value determined from the results obtained in 6.1.3. T

49、he resultant adhesion of the fourth test piece shall be in accordance with the requirements of 6.2. NOTE There is no limitation on the increase in the values of these properties. 6.4 Abrasion resistance 6.4.1 General Abrasion tests are specific to different hose constructions and/or materials. Two procedures with different values are therefore specified here to avoid unfair discrimination. In addition, it is important to note that the requirements, revolutions as given in Table 5 and double strokes