1、BRITISH STANDARD BS ISO 9393-1:2004 Thermoplastics valves for industrial applications Pressure test methods and requirements Part 1: General ICS 23.060.01; 83.140.30 BS ISO 9393-1:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 13 July 2
2、004 BSI 13 July 2004 ISBN 0 580 44041 9 National foreword This British Standard reproduces verbatim ISO 9393-1:2004 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastic piping systems, to Subcommittee PRI/88/2/Pan
3、el 4, Industrial and valves, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found
4、in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are respons
5、ible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the
6、 UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 7 and a back cover. The BSI copyright notice displayed in this
7、document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 9393-1:2004(E) OSI 4002INTERNATIONAL STANDARD ISO 9393-1 Second edition 2004-07-01 Thermoplastics valves for industrial applications Pressure test methods and require
8、ments Part 1: General Robinets en matires thermoplastiques pour les applications industrielles Mthodes dessai de pression et exigences Partie 1: Gnralits BSISO93931:2004ISO 9393-1:2004(E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes. In ccaocnadrw eith Aebods licensilop gnic,y this fi
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13、22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Pulbisdehi n Switlrez dnaii ISO 4002 Allr ithgsr esedevrBSISO93931:2004IS-3939 O1:(4002E) I SO 4002 All irthgs ersedevr iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Classification of pressure tes
14、ts. 2 5 Test specimens . 2 5.1 Test specimens for materials tests . 2 5.2 Test specimens for shell tests. 3 5.3 Test specimens for long-term behaviour of a complete valve. 3 5.4 Test specimens for seat and packing tests 3 5.5 Conditioning 3 6 Test apparatus. 4 7 Procedure. 4 7.1 Materials test . 4 7
15、.2 Shell test 4 7.3 Long-term behaviour test of complete valves . 5 7.4 Seat and packing test . 5 8 Interpretation of results 6 8.1 Materials tests . 6 8.2 Shell tests 6 8.3 Long-term behaviour tests of complete valves . 6 8.4 Seat and packing tests . 7 9 Test report 7 BSISO93931:2004IS-3939 O1:(400
16、2E) iv I SO 4002 All irthgs ersedevrForeword 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 member body i
17、nterested 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 Electrotechn
18、ical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by th
19、e technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights
20、. ISO shall not be held responsible for identifying any or all such patent rights. ISO 9393-1 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 7, Valves and auxiliary equipment of plastics materials. This second edition
21、cancels and replaces the first edition (ISO 9393-1:1994), which has been technically revised. ISO 9393 consists of the following parts, under the general title Thermoplastics valves for industrial applications Pressure test methods and requirements: Part 1: General Part 2: Test conditions and basic
22、requirements BSISO93931:2004INTENRATIONAL TSANDADR IS-3939 O1:(4002E)I SO 4002 All irthgs ersedevr 1Thermoplastics valves for industrial applications Pressure test methods and requirements Part 1: General 1 Scope This part of ISO 9393 specifies the test methods for the resistance to internal pressur
23、e and the leaktightness of thermoplastics valves for use in industrial applications with cold water or with industrial fluids, but excluding gas applications covered by thermoplastics-valve product standards. Part 2 of this International Standard specifies the test conditions and requirements. 2 Nor
24、mative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1167-1, Thermoplastics pipe
25、s, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General method ISO 10931: 1) , Plastics piping systems for industrial applications Poly(vinylidene fluoride) (PVDF) Specifications for components and the system ISO 15493:2003, Plasti
26、cs piping systems for industrial applications Acrylonitrile-butadiene-styrene (ABS), unplasticized poly(vinyl chloride) (PVC-U) and chlorinated poly(vinyl chloride) (PVC-C) Specifications for components and the system Metric series ISO 15494:2003, Plastics piping systems for industrial applications
27、Polybutene (PB), polyethylene (PE) and polypropylene (PP) Specifications for components and the system Metric series 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 nominal pressure PN alphanumerical designation of pressure, used for referenc
28、e purposes, which is related to the mechanical strength of the valve NOTE Usually it corresponds to the maximum allowable pressure of water at 20 C, in bars, for which the valve is designed. 1) To be published. (Revision of ISO 10931-1:1997, ISO 10931-2:1997, ISO 10931-3:1996, ISO 10931-4:1997 and I
29、SO 10931-5:1998) BSISO93931:2004ISO 9393-1:2004(E) 2 I SO 4002 All irthgs ersedevr3.2 test pressure internal pressure to which a valve is subjected during a test NOTE It is usually expressed in bars (1 bar = 0,1 MPa). 3.3 closing torque torque required to close a valve to full tightness at the maxim
30、um allowable pressure NOTE Closing torque is usually expressed in newton metres. 3.4 materials test test intended to determine the long-term behaviour, under internal hydrostatic pressure, of thermoplastics materials in the form of injection-moulded pipe 3.5 shell test test intended to check the des
31、ign strength of a valve shell, under internal hydrostatic pressure, against known hydrostatic curves 3.6 long-term behaviour test of a complete valve test intended to determine the pressure-resistance capability of a complete valve assembly 3.7 seat and packing test test on a valve to determine the
32、leaktightness of the valve seat when the valve is closed (in one direction for unidirectional valves, and in each of the directions for bi- or multidirectional valves); the leakproofness of the complete valve assembly when the valve is open 4 Classification of pressure tests There are four categorie
33、s of valve pressure test, as follows: a) Tests intended to establish the long-term internal-pressure resistance of the thermoplastics materials from which the valve components were manufactured (materials tests). b) Tests intended to verify the performance of the pressure-sustaining components of th
34、e valve (shell tests). c) Tests intended to verify that the design of the valve and its connections does not adversely affect the long-term performance of the valve (long-term behaviour tests of complete valves). d) Tests intended to verify the leaktightness of the completely assembled valve (seat a
35、nd packing tests). 5 Test specimens 5.1 Test specimens for materials tests Test specimens shall be prepared in accordance with Clause 5 of ISO 15493:2003, ISO 15494:2003 or ISO 10931:, as applicable for the particular material concerned. BSISO93931:2004IS-3939 O1:(4002E) I SO 4002 All irthgs ersedev
36、r 3For connection of the test specimens to the test apparatus and for other features, see ISO 1167-1. 5.2 Test specimens for shell tests For component pressure testing on a valve body (shell test), ISO 1167-1 can be used. 5.3 Test specimens for long-term behaviour of a complete valve Test specimens
37、for long-term behaviour testing of a complete valve shall comprise a complete valve with all connecting elements assembled in accordance with the valve manufacturers instructions, as follows: a) Valves with flanges or unions Test specimens shall be connected by means of flanges or unions to the test
38、 apparatus. b) Valves with threaded ends (male and/or female) Test specimens shall be connected by means of threaded fittings to the test apparatus. c) Valves with ends for fusion or solvent-cement jointing Test specimens shall consist of a valve jointed by fusion or solvent-cementing to one or more
39、 thermoplastics-pipe sections. The free length of the pipe section connected to the valve shall be at least equal to the outside diameter of the pipe. The pipe shall be cut at right angles to its longitudinal axis. For fusion-jointed or cemented components, the curing or setting time specified by th
40、e manufacturer shall be completed before commencing conditioning in accordance with 5.5. d) Valves with compression-fitting ends Test specimens shall be jointed to one or more pipe sections. The free length of each pipe section connected to the valve shall be at least equal to the outside diameter o
41、f the pipe. e) Valves with elastomeric sealing ring type socket joints Test specimens shall be jointed to one or more pipe sections. The free length of each pipe section connected to the valve shall be at least equal to the outside diameter of the pipe. 5.4 Test specimens for seat and packing tests
42、Test specimens shall comprise a complete valve assembly having the open ends of the valve closed off by, for example, covers, plugs and flexible seals. For moulded, fusion-jointed or cemented components, the curing or setting time specified by the manufacturer shall be completed before commencing co
43、nditioning in accordance with 5.5. 5.5 Conditioning 5.5.1 Conditioning for tests with water inside the test specimen Before or after positioning it in the test apparatus, fill the test specimen with water and condition it for at least 1 h at a temperature not deviating more than 2 C from the specifi
44、ed test temperature. BSISO93931:2004ISO 9393-1:2004(E) 4 I SO 4002 All irthgs ersedevr5.5.2 Conditioning for tests with a gas inside the test specimen Condition the test specimen for at least 1 h at a temperature not deviating more than 8 C fromthe specified test temperature. 6 Test apparatus 6.1 Pr
45、essurizing device, as specified in ISO 1167-1, capable of being connected to the specimen and capable of progressively applying the water pressure specified in the appropriate product standard and maintaining the pressure constant to within 2 1 + % for the length of time specified in ISO 9393-2 2) ,
46、 while maintaining the temperature at that specified in the product standard. For seat and packing tests, if air or nitrogen is used as the test fluid (either may be used), the device shall be capable of applying a constant gas pressure of 0,6 MPa (6 bar) and shall include a temperature-controlled w
47、ater bath large enough for the specimen to be immersed in it. If air or nitrogen is used as the test fluid, it is necessary to take appropriate safety precautions for the use of compressed gases. For long-term behaviour testing of complete valves and for shell tests, the specimen shall be suspended
48、or placed so that the results are not influenced by the forces necessary to tighten the test specimen, nor shall the test device provide additional reinforcement or support to the valve. 6.2 Pressure measurement devices, capable of checking conformity to the specified test pressure. In the case of g
49、auges or similar calibrated pressure measurement devices, the required pressure setting shall lie within the calibrated range of the device used. The pressure measurement device(s) shall not contaminate the test fluid. NOTE The use of master gauges for calibration of the apparatus is recommended. 6.3 Thermometers or equivalent, capable of checking conformity to the specified test temperature. 6.4 Timer,
