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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN ISO 3994:2001 The E
2、uropean Standard EN ISO 3994:2000 has the status of a British Standard ICS 23.040.70 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Plastics hoses Helical-thermoplastic- reinforced thermoplastics hoses for suction and discharge of aqueous materials Specification Licensed Copy
3、: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15
4、April 2001 BSI 04-2000 ISBN 0 580 34804 0 BS EN ISO 3994:2001 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the official English language version of EN ISO 3994:2000. It is identical with ISO 3994:1998. It supersedes BS EN 23994:1993 which is wit
5、hdrawn. The UK participation in its preparation was entrusted by Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies, to Subcommittee PRI/66/1, Industrial, chemical and petrochemical applications, which has the responsibility to: aid enquirers to understand the text; pr
6、esent to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee
7、can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement t
8、hese international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport t
9、o include all 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,
10、 the EN ISO title page, the EN ISO foreword page, the ISO title page, pages i and iii, a blank page, pages 1 to 12, the annex ZA page and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov
11、 19 09:40:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3994 April 2000 ICS 23.040.70Supersedes EN 23994:1993 English version Plastics hoses - Helical-thermoplastic-reinforced thermoplastics hoses for suction and discharge of aqueous materials
12、 - Specification (ISO 3994:1998) Tuyaux en plastiques - Tuyaux-thermoplastiques renforcement thermoplastique en spirale et refoulement de matires aqueuses - Spcifications (ISO 3994:1998) Kunststoffschluche - Thermoplastischwendelverstrkte thermoplastische Schluche zum Ansaugen und Entladen wsseriger
13、 Stoffe - Anforderungen (ISO 3994:1998) This European Standard was approved by CEN on 7 March 2000. 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. Up-
14、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 unde
15、r 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxe
16、mbourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 B-1050 Brussels 2000 CENAll rights of exploitation in any form and by an
17、y means reserved worldwide for CEN national Members. Ref. No. EN ISO 3994:2000 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of the International Standard from Technical Committee ISO/TC 45 “Rubber and rubber products“
18、of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies“, the secretariat of which is held by BSI. This European Standard replaces EN 23994:1993. This European Standard sh
19、all be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2000, and conflicting national standards shall be withdrawn at the latest by October 2000. According to the CEN/CENELEC Internal Regulations, the national standards
20、organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement noti
21、ce The text of the International Standard ISO 3994:1998 has been approved by CEN as a European Standard without any modification. NOTE: Normative references to International Standards are listed in annex ZA (normative). EN ISO 3994:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50
22、 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD IS0 3994 Second edition 1998-04-01 Plastics hoses - Helical-thermoplastic- reinforced thermoplastics hoses for suction and discharge of aqueous materials - Specification Tuyaux en plastiques - Tuyaux thermoplastiques 2 renforcement t
23、hermoplastique en spirale pour aspiration et refoulement de mathc=c ;ten004=a ;osi=p ;scosi=o lartnec=s detnirP ni dnalreztiwS ii EN ISO 3994:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 0SI )E(8991:4993 Introduction This Internation
24、al Standard has been prepared to provide minimum acceptable requirements for the satisfactory performance of polymer reinforced thermoplastics hoses for suction and discharge applications, conveying water, aqueous chemical solutions and abrasive solids and slurries. If there is a special requirement
25、 for resistance to deleterious chemicals this shall be a matter for agreement between the supplier and the purchaser. The list of nominal bores given in tables 1 and 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 (
26、the basis of the tables) and which may be the subject of individual national standards but compliance with this standard can not be claimed. EN ISO 3994:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This page intentionally left blank
27、EN ISO 3994:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI LANOITANRETNI DRADNATS 0SI 0SI :4993 )E(8991 Plastics hoses - Helical-thermoplastic-reinforced thermoplastics hoses for suction and discharge of aqueous materials - Specificati
28、on 1 Scope This International Standard specifies the requirements for three types of helical thermoplastic reinforced thermoplastics hoses for suction and discharge applications for use in the temperature range from -10 “C to +55 “C. The types of hoses covered in this International Standard are not
29、intended for use with flammable and combustible materials nor with aromatic solvents. NOTE Hoses of a similar construction for suction and discharge for fire fighting are specified in IS0 14775. 2 Normative references The following standards contain provisions which, through reference in this text,
30、constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition
31、s of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 116: 1976 Plastics - Determination of loss of plasticizers - Activated carbon method. IS0 554: 1976 Standard atmospheres for conditioning and/or testing - Specifications . EN
32、 ISO 3994:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 0SI :4993 )E(8991 IS0 130 7: 1992 Rubber and plastics hoses for general-purpose industrial applications - Bore diameters and tolerances, and tolerances on length. IS0 IS0 1402: 1
33、994 Rubber and plastics hoses and hose assemblies - Hydrostatic testing. 1746: 1983 Rubber or plastics hoses and tubing - Bending test. IS0 4672: 1997 Rubber andplastics hoses - Sub-ambient temperature flexibility tests IS0 8330: 1998 Rubber and plastics hoses and hose assemblies - Vocabulary IS0 11
34、758: 1995 Rubber andplastics hoses - Exposure to a Xenon arc lamp - Determination of changes in colour and appearance. 3 Terms and definitions For the purposes of this International Standard the terms and definitions given in IS0 8330 apply. 4 Types Three types of hoses are specified related to the
35、pressure of suction and safety ratios and related burst pressure, see tables 3,4 and 5. The safety ratios are as follows: Type 1 - 1 : 2,5 (light service) Type 2 - 1 : 3,15 (normal service) Type3-1:4 (heavy service) All types are designed to operate in the temperature range - 10 o C to +55 O C. 5 Ma
36、terials and construction The hoses shall be as uniform as commercially practicable in colour, opacity and other physical properties. They shall consist of a flexible thermoplastics material supported in its mass by a helix of thermoplastic material of a similar molecular structure. The reinforcing a
37、nd flexible components of the wall shall be fused and free from visible cracks, porosity, foreign inclusions or other defects such as are liable to cause failure of the hoses in service. EN ISO 3994:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50 GMT+00:00 2006, Uncontrolled Cop
38、y, (c) BSI 0SI )E(8991:4993 6 Dimensions and tolerances 61 . Nominal bore, internal diameters and tolerances The nominal bore, internal diameters and tolerances of the hoses shall meet the requirements given in tables 1 and 2, which are in accordance with IS0 1307. Table 1 - Nominal bore, internal d
39、iameters and tolerances - Types 1 and 2 Nominal bore 12,5 16 20 F 23 z 31J 40 50 63 80 100 125 160 Internal diameter Tolerances mm mm 12,5 It 0,75 16 rfi: 0,75 20 i 0,75 25 fr 1,25 31,5 xix I,25 40 * 1,50 50 k 1,50 63 rf: 1,50 80 k 2,00 100 * 2,00 125 * 2,00 160 rt 2,00 Table 2 - Nominal bore, inter
40、nal diameters and tolerances - Type 3 Nominal bore Internal diameter Tolerances mm 25 31,5 40 50 63 80 100 125 160 200 250 315 mm xiz 1,25 * 1,25 AI 1,50 * 1,50 * 1,50 * 2,00 k 2,00 xk 2,00 It 2,00 k 2,00 It 3,00 * 3,00 EN ISO 3994:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50
41、 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 0SI :4993 )E(8991 62 . Length tolerances The tolerances on cut lengths shall be in accordance with IS0 1307. 7 Performance requirements of hoses 71 . Hydrostatic test at standard laboratory temperature When tested by the method specified in IS0 1402 at sta
42、ndard laboratory temperature chosen from IS0 554, the hoses shall meet the requirements given in table 3. At proof pressure (i.e. 50 % of minimum burst pressure) the hoses shall be examined for evidence of leakage, cracking, abrupt distortion indicating irregularity in materials or manufacture, or o
43、ther signs of failure. Table 3 - Hydrostatic tests at standard laboratory temperature Nominal bore 12,5 up to and including 25 3 1,5 up to and including 63 80 100 up to and including 125 160 up to and including 250 315 Maximum working pressure, all types, bar a) 25 9 2 Minimum burst pressure, bar Ty
44、pe 1 Type 2 Type 3 28 20 16 12 10 8 a) 1 bar = 0,lMPa EN ISO 3994:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 0SI :4993 )E(8991 72 . Hydrostatic test at 55 “C h 2 “C When tested by the method specified in IS0 1402 at 55 k 2 OC, the
45、hoses shall meet the requirements given in table 4. Table 4 - Hydrostatic test at 55 rf: 2 .C Nominal bore Maximum working pressure, all types, bar Minimum burst pressure, bar TYPe 1 Type 2 Type 3 12,5 up to and including 25 2 5 65 8 3 1,5 up to and including 63 15 7 4 45 7 6 80 13 9 3 4 5 100 up to
46、 and including 125 1 25 3 4 160 up to and including 250 08 I 2 25 7 3 315 06 7 25 7 73 . Pulsating pressure test requirements When tested in accordance with the method specified in annex A, the hoses shall withstand a minimum of 10 000 cycles. The test piece shall be considered to have failed if it
47、develops a leak or rupture. In the event of a failure within one diameter distance from either coupling the test shall be disregarded and a further test piece tested. The maximum pressure of the test cycle (see figure A. 1) shall be 120 % of maximum working pressure. 74 . Vacuum test requirements Wh
48、en tested in accordance with the method specified in annex B using the absolute pressure indicated in table 5, the hoses shall not fail due to collapse or fracture at a point that is more than one diameter distance from the coupling. In the event of failure closer to the coupling, the test shall be
49、disregarded and a further test piece tested. 5 EN ISO 3994:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:40:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 0SI :4993 )E(8991 Table 5 - Pressures for the vacuum test Nominal bore 12,5 up to and including 160 25 to and including 3 up 15 Types 1 and 2 hose, absolute pressure, bar 0,35 Type hose, 3 absolute pressure, bar 0,20 75 . Reinforcement fracture test requirements When tested in accordance with the method specified in annex C, the polymer reinforcement shall be capable of reverse bending with