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1、BRITISH STANDARD BS EN 23994:1993 ISO 3994:1977 Plastics products Hose of polymer reinforced thermoplastics for suction and discharge The European Standard EN 23994:1993 has the status of a British Standard UDC 621.643.3:678.073 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 08:30:34 GMT+00:
2、00 2006, Uncontrolled Copy, (c) BSI BS EN 23994:1993 This British Standard, having been prepared under the direction of the Plastics and Rubber Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 March 1993 BSI 10-1999 The following BSI re
3、ferences relate to the work on this standard: Committee reference PRM/66 Draft for comment 91/43030 DC ISBN 0 580 21429 X Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organiza
4、tions of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organizat
5、ion for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstitu
6、to Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun s
7、heffieldun, na, Fri Nov 03 08:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 23994:1993 BSI 10-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 0Introduction3 1Scope and field of application3 2References3 3Materials and construction3 4Dimensions a
8、nd tolerances3 5Physical tests on finished hose3 6Marking5 Annex A Pressure impulse test6 Annex B Vacuum test6 Annex C Reinforcement fracture test6 Figure 1 Pressure impulse cycle7 Figure 2 Suitable impulse test circuit8 Figure 3 Diagrammatic representation of reinforcement fracture test8 Table 1 No
9、minal bore and tolerance Types 1 and 23 Table 2 Nominal bore and tolerance Type 33 Table 3 Hydrostatic tests at 23 2 C4 Table 4 Hydrostatic test at 55 2 C5 Table 5 Pressures for the vacuum test5 Table 6 Extension pieces for fracture test5 National annex NA (informative) Committees responsibleInside
10、back cover National annex NB (informative) Cross-referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 08:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 23994:1993 ii BSI 10-1999 National foreword This British Standard has been prepared under the direction of the
11、 Plastics and Rubber Standards Policy Committee and is the English language version of EN 23994:1993 Plastics products Hose of polymer reinforced thermoplastics for suction and discharge, published by the European Committee for Standardization (CEN). This British Standard supersedes BS 5780:1979 whi
12、ch is withdrawn. EN 23994 was produced as a result of formal voting within CEN. When a European Standard is adopted by CEN, the UK is obliged to implement it as a British Standard without deviation, and to withdraw any conflicting British Standards. A British Standard does not purport to include all
13、 the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and
14、ii, the EN title page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 08
15、:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 23994 January 1993 UDC 621.643.3:678.073 Descriptors: Plastics products, plastics hoses, suction hoses, delivery hoses, thermoplastic resins, polymers, dimensions, dimensional tolerance, tests, phy
16、sical test, marking English version Plastics products Hose of polymer reinforced thermoplastics for suction and discharge (ISO 3994:1977) Produits en plastique Tuyaux thermoplastiques renforcement polymrique pour aspiration et refoulement (ISO 3994:1977) Kunststoff Polymer-verstrkter thermoplastisch
17、er Saugund Entleerungsschlauch (ISO 3994:1977) This European Standard was approved by CEN on 1992-12-04. CEN members 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
18、. Up-to-date lists and bibliographical references concerning such national standards 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 translation
19、 under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Net
20、herlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 23994:1993 E
21、 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 08:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 23994:1993 2 BSI 10-1999 Foreword This European Standard is the endorsement of ISO 3994. Endorsement of ISO 3994 was recommended by CEN/TC 218 “Rubber and plastics hoses and hose assemblies
22、” under whose competence this European Standard will henceforth fall. 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 July 1993, and conflicting national standards shall be withdrawn at the latest
23、 by July 1993. The standard was approved and in accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal
24、, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 08:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 23994:1993 BSI 10-19993 0 Introduction This International Standard has been prepared to provide minimum acceptable requirements for the satis
25、factory performance of polymer reinforced thermoplastics hose for suction and discharge applications, conveying water, aqueous chemical solutions and abrasive solids and slurries. If there is a special requirement for resistance to deleterious chemicals this shall be a matter for agreement between t
26、he supplier and the purchaser. The list of nominal bores given in Table 1 and Table 2 is not intended to be restrictive or to preclude the manufacture of other sizes than those of the R 10 series of preferred numbers (the basis of the tables) and which may be the subject of individual national stand
27、ards. When a suitable and agreed ageing test is available an ageing requirement will be added to this International Standard. 1 Scope and field of application This International Standard specifies the requirements for three types of polymer reinforced thermoplastics hose for suction and discharge ap
28、plications for use in the temperature range 10 to + 55 C, as follows: Type 1: light service; Type 2: normal service; Type 3: heavy service. The types of hose covered in this International Standard are not intended for use with flammable and combustible materials or with aromatic solvents. 2 Referenc
29、es ISO 176, Plastics Determination of loss of plasticizers Activated carbon method. ISO 1307, Rubber hose Bore sizes, tolerances on length, and test pressures. ISO 1402, Rubber hose Hydrostatic testing. ISO 1746, Rubber hose Bending test. 3 Materials and construction The hose shall be as uniform as
30、commercially practicable in colour, opacity and other physical properties. It shall consist of a flexible thermoplastics material supported in its mass by a helix of polymer material of a similar molecular structure. The reinforcing and flexible components of the wall shall be fused and free from vi
31、sible cracks, porosity, foreign inclusions or other defects such as are liable to cause failure of the hose in service. 4 Dimensions and tolerances 4.1 Bore The bore of the hose shall meet the requirements of Table 1 and Table 2, which are in accordance with ISO 1307. Table 1 Nominal bore and tolera
32、nce Types 1 and 2 Table 2 Nominal bore and tolerance Type 3 NOTEHoses of other nominal bore, for preference using the R 20 series of preferred numbers, may be the subject of an agreement between the interested parties or detailed in national standards. The tolerance should be as for the next larger
33、bore size given in Table 1 or Table 2. 4.2 Length The tolerances on cut lengths shall be in accordance with ISO 1307. 5 Physical tests on finished hose 5.1 Hydrostatic test (23 2 C) The hose when tested by the method specified in ISO 1402 at 23 2 C shall meet the requirements of Table 3. Dimensions
34、in millimetres Nominal boreTolerance 12,5 16 20 25 31,5 40 50 63 80 100 125 160 0,75 0,75 0,75 1,25 1,25 1,50 1,50 1,50 2,00 2,00 2,00 2,00 Dimensions in millimetres Nominal boreTolerance 25 31,5 40 50 63 80 100 125 160 200 250 315 1,25 1,25 1,50 1,50 1,50 2,00 2,00 2,00 2,00 2,00 3,00 3,00 Licensed
35、 Copy: sheffieldun sheffieldun, na, Fri Nov 03 08:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 23994:1993 4 BSI 10-1999 At proof pressure (i.e. 50 % of minimum burst pressure) the hose should be examined for evidence of leakage, cracking, abrupt distortion indicating irregularity in materials
36、 or manufacture, or other signs of failure. The values in Table 3 are based on the following safety ratios: type 1: 2,5 : 1 type 2: 3,15 : 1 type 3: 4 : 1 5.2 Hydrostatic test (55 2 C) The hose when tested by the method specified in ISO 1402 at 55 2 C shall meet the requirements of Table 4. The valu
37、es in Table 4 are based on the following safety ratios: type 1: 2,5 : 1 type 2: 3,15 : 1 type 3: 4 : 1 5.3 Pulsating pressure test requirements When tested in accordance with the method specified in Annex A the hose shall withstand a minimum of 10 000 cycles. The test piece shall be considered to ha
38、ve failed if it develops a leak or rupture. In the event of a failure within one diameter from either coupling the test shall be disregarded and a further test piece tested. The maximum pressure of the test cycle (Figure 1) shall be 120 % of design working pressure. 5.4 Vacuum test requirements When
39、 tested in accordance with the method specified in Annex B using the absolute pressure indicated in Table 5, the hose shall not fail due to collapse or fracture at a point which is more than one diameter distance from the coupling. In the event of failure closer to the coupling the test shall be dis
40、regarded and a further test piece tested. 5.5 Reinforcement fracture test requirements When tested in accordance with the method specified in Annex C the polymer reinforcement shall be capable of reverse bending without cracking after 336 h extended over the appropriate size extension piece listed i
41、n Table 6. NOTEThis period is intended as a control test. For a type test a period of four months should be used. 5.6 Minimum bend radius requirements When tested in accordance with ISO 1746 using a minimum radius of curvature (c) of five times the nominal bore, in the cases of type 1 and type 2 hos
42、es, and eight times the nominal bore in the case of type 3 hose, the hose shall not crack. 5.7 Cold bend radius requirements When tested at 10 2 C in accordance with the requirements of ISO 1746 after conditioning for 5 h at that temperature and using a minimum radius of curvature (c) of four times
43、the value in accordance with 5.6, the hose shall not crack. Table 3 Hydrostatic tests at 23 2 C Size group (nominal bore) Design working pressure, all types Minimum bursting pressure MPa (bar) mmMPa (bar)type 1type 2type 3 12,5 up to and including 250,7 (7,0)1,7(17)2,2(22)2,8 (28) 31,5 up to and inc
44、luding 630,5 (5,0)1,25 (12,5)1,6(16)2,0 (20) 800,4 (4,0)1,0(10)1,25 (12,5)1,6 (16) 100 up to and including 1250,3 (3,0)0,75 (7,5)0,95 (9,5)1,2 (12) 160 up to and including 2500,25 (2,5)0,6 (6,0)0,8(8)1,0 (10) 3150,2 (2,0)0,8 (8) Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 08:30:34 GMT+00:
45、00 2006, Uncontrolled Copy, (c) BSI EN 23994:1993 BSI 10-19995 Table 4 Hydrostatic test at 55 2 C Table 5 Pressures for the vacuum test Table 6 Extension pieces for fracture test 5.8 Loss in mass on heating The flexible thermoplastics material used in the construction shall, when tested in accordanc
46、e with ISO 176 (method B), have a loss in mass not greater than 4 %. 6 Marking The hose may be marked using a contrasting indelible ink with the following information or as agreed between the purchaser and the supplier: a) manufacturers name or trade mark; b) number of this International Standard; c
47、) hose type; d) hose nominal bore; e) year of manufacture (last two digits). Characters should be at least 5 mm high. Size group (nominal bore) Design working pressure, all types Minimum bursting pressure MPa (bar) mmMPa (bar)type 1type 2type 3 12,5 up to and including 250,20 (2,0)0,50 (5)0,65 (6,5)
48、0,80 (8) 31,5 up to and including 630,15 (1,5)0,40 (4)0,45 (4,5)0,60 (6) 800,13 (1,3)0,30 (3)0,40 (4)0,50 (5) 100 up to and including 1250,10 (1,0)0,25 (2,5)0,30 (3)0,40 (4) 160 up to and including 2500,08 (0,8)0,20 (2)0,25 (2,5)0,30 (3) 3150,06 ( 0,6)0,25 (2,5) Nominal bore Types 1 and 2 hose, abso
49、lute pressure Type 3 hose, absolute pressure mmmbar (kPa)mbar (kPa) 12,5 up to and including 160 350 (35) 25 up to and including 315 200 (20) Dimensions in millimetres Nominal boreBlock width 12,5 16 20 25 31,5 40 50 63 80 100 125 160 200 250 315 10 12 16 19 23 27 31 34 38 44 49 53 59 66 75 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 08:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 23