1、BRITISH STANDARD BS EN ISO 13783:1998 BS 2782-11: Method 1123C: 1998 Plastics piping systems Unplasticized poly(vinyl chloride) (PVC-U) end-load-bearing double-socket joints Test method for leaktightness and strength while subjected to bending and internal pressure The European Standard EN ISO 13783
2、:1997 has the status of a British Standard ICS 23.040.60BSEN ISO 13783:1998 This British Standard, having been prepared under the direction of the Sector Board forMaterials and Chemicals, waspublished under the authority of the Standards Board and comes into effect on 15 February 1998 BSI 05-1999 IS
3、BN 0 580 29133 2 Amendments issued since publication Amd. No. Date CommentsBSENISO 13783:1998 BSI 05-1999 i Contents Page National foreword ii Foreword 2 Text of EN ISO 13783 3BSENISO 13783:1998 ii BSI 05-1999 National foreword This British Standard is the English language version of EN ISO13783:199
4、7. It is identical with ISO13783:1997. This international standard is incorporated into BS2782 Methods of testing plastics: Part 11: Thermoplastics pipes, fittings and valves, as Method 1123C, for association with related test methods for plastics materials and plastics piping components. The UK par
5、ticipation in its preparation was entrusted to Technical Committee PRI/61, Plastics piping systems and components, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for
6、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 committee can be obtained on request to its secretary. To assist the use of this standard, the UK Technical Committee draws a
7、ttention to the fact that generally in standards for plastics pipes for pressure applications, the value for the nominal pressure (PN) is expressed in bars, e.g.as given in Table 1, and the pressures for test conditions are also expressed in bars, as in4.2 and inFigure 3. In6.1 only, however, for th
8、e calculation of F ethe value to be used for p iis the value in megapascals (MPa) of the internal pressure corresponding to the nominal pressure, and hence0.1times PN (as stated in6.1). NOTE1 bar = 10 5 N/m 2= 0.1 MPa Cross-references The British Standards which implement international or European p
9、ublications 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. WARNING NOTE. This British Standard, which is identical with ISO1
10、3783:1997, does not necessarily detail all the precautions necessary to meet the requirements of the Health and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety precautions and the method should only be operated by trained personnel. A British Standard does not purpor
11、t to 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 cov
12、er, pages i and ii, theEN ISO title page, pages 2 to 6 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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1378
13、3 September 1997 ICS 23.040.60 Descriptors: See ISO document English version Plastics piping systems Unplasticized poly(vinyl chloride) (PVC-U) end-load-bearing double-socket joints Test method for leaktightness and strength while subjected to bending and internal pressure (ISO 13783:1997) Systmes d
14、e canalisations en plastiques Double manchon en poly(chlorure de vinyle) non plastifi (PVC-U) rsistant la traction axiale Mthode dessai dtanchit et de la rsistance en traction, avec sollicitation en flexion et pression interne (ISO13783:1997) Kunststoff-Rohrleitungssysteme Zugfeste Doppelmuffenverbi
15、ndungen aus weichmacherfreiem Poly(vinylchlorid) (PVC-U) Prfverfahren fr die Dichtheit und mechanische Festigkeit unter Biegung und Innendruck (ISO13783:1997) This European Standard was approved by CEN on 1997-06-28. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which sti
16、pulate 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 application to the Central Secretariat or to any CEN member. The European Standards
17、exist 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 Central Secretariat has the same status as the official versions. CEN members are the national standards
18、bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr No
19、rmung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13783:1997 EENISO 13783:1997 BSI 05-1999 2 Foreword The text of EN ISO 13783:1997 has been prepared by Technica
20、l Committee CEN/TC155 “Plastics piping systems and ducting systems”, the secretariat of which is held by NNI, in collaboration with Technical Committee ISO/TC138 “Plastics pipes, fittings and valves for the transport of fluids”. The material-dependent parameters and/or performance requirements are i
21、ncorporated in the System Standard(s) concerned. This standard is one of a series of standards on test methods which support System Standards for plastics piping systems and ducting systems. This European Standard shall be given the status of a national standard, either by publication of an identica
22、l text or by endorsement, at the latest by March 1998, and conflicting national standards shall be withdrawn at the latest by March 1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
23、Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom. Contents Page Foreword 2 1 Scope 3 2 Normative reference 3 3 Principle 4 4 Apparatus 4 5 Test piece 4 6 Pr
24、ocedure 5 7 Test report 6 Figure 1 Example of end-load-bearing double-socket coupler 3 Figure 2 Example of assembly and specifiedlengths (plan view) 4 Figure 3 Schematic hydrostatic pressure testregime with bending 6 Table 1 Calculated values for the bending force,F 5ENISO13783:1997 BSI 05-1999 3 1
25、Scope This standard specifies a method for testing, while subjected to bending, the leaktightness and strength of assembled end-load-bearing double-socket joints of unplasticized poly(vinyl chloride) (PVC-U) which allow a maximum deflection of3 . It is applicable to double-socket couplers provided w
26、ith elastomeric sealing rings and locking rings and intended for use with PVC-U pressure pipes (seeFigure 1). The method specifies the internal pressure, the method of calculation for the additional bending force and the procedure for the bending test. 2 Normative reference This Standard incorporate
27、s by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this Standard o
28、nly when incorporated in it by amendment or revision. Forundated references the latest edition of the publication referred to applies. ISO 4065:1996, Thermoplastics pipes Universal wall thickness table. Figure 1 Example of end-load-bearing double-socket couplerENISO 13783:1997 4 BSI 05-1999 3 Princi
29、ple A test piece, consisting of PVC-U pipes mounted into a PVC-U double-socket coupler, is exposed to a specific cycle of internal hydrostatic pressures for specific test periods and at a specific temperature while the assembly is simultaneously subjected to a lateral bending force. 4 Apparatus 4.1
30、A pressure control device, connected to the test piece and capable of applying a variable internal hydrostatic pressure of at least2,5times the nominal pressure (PN) of the PVC-U pipe and joint assembly. 4.2 A vacuum pump, capable of applying a negative internal pressure of at least 0,8bar (0,08MPa)
31、. 4.3 A loading jig, capable of applying a horizontal bending force to an assembled test piece while it is subjected to an internal hydrostatic pressure. The jig includes vertical supports equally spaced at 5d non either side of the axis of the horizontal force to restrain the test piece so that the
32、 horizontal force will induce bending, and horizontal supports beneath the test piece, to enable horizontal axial alignment of the test piece components. The supports have a low friction surface, to minimise inhibition of axial bending. An example of a test arrangement is shown inFigure 2. The lengt
33、h of the pipe sections and the total length of the test pieces shall conform to the values given inFigure 2. 4.4 Gauges, for measuring the internal hydrostatic pressure and the applied bending force, each having an accuracy of1% at the measured values. 5 Test piece The test piece shall consist of tw
34、o PVC-U pipe sections mounted into the PVC-U end-load-bearing double-socket coupler to be tested. The assembly shall be carried out in accordance with the instructions of the manufacturer of the double-socket coupler. The pipes and the double-socket coupler shall be of the same nominal pressure. NOT
35、EThe mean outside diameter of the pipes should preferably conform to the minimum specified value, and the socket dimensions (mean inside diameter and the diameter of the groove for housing the sealing ring) should preferably conform to the maximum allowable values stated by the manufacturer in order
36、 to have dimensions as close as possible to the extreme limits of their relevant tolerances. Figure 2 Example of assembly and specified lengths (plan view)ENISO13783:1997 BSI 05-1999 5 6 Procedure 6.1 Calculate the bending force F using the following equation: where: where: NOTESome values calculate
37、d for F, based on PVC-U pipes, are given in Table 1. 6.2 Lay the assembled test piece on the supports, ensuring that the pipes and the coupler are in axial alignment (seeFigure 2). 6.3 Fill the test piece with water at (20 5) C and release all air. Allow the assembly to condition for60 min to ensure
38、 equalization of temperature. 6.4 Carry out the procedure given in6.5 at any ambient temperature between15 C and25 C while maintaining this ambient temperature within 2 C and examining the joints for leakage during the whole test cycle. 6.5 Carry out the following test procedure in accordance with t
39、he schematic arrangement shown inFigure 3, which is not intended to require strictly linear rates of change in pressure or force, and by maintaining each static pressure and bending force within . At A: increase the water pressure over a period of5min to1times PN, and maintain this pressure for5min.
40、 At B: increase the water pressure over a period of5min to2,5times PN, and maintain this pressure for5min. At C: reduce the water pressure over a period of5min to1times PN. At D: apply the calculated value of the bending force, F, in the horizontal plane over a period of5min whilst maintaining the i
41、nternal pressure of1times PN. Table 1 Calculated values for the bending force, F d n is the nominal outside diameter of the PVC-U pipes, in millimetres; e n is the nominal wall thickness of the PVC-U pipes, in millimetres; B is the resulting stress, due to the simultaneous effect of bending and inte
42、rnal pressure. It shall be 20 MPa (N/mm 2 ); d n,m= d n e n ; F e is the force, in newtons, acting axially on the end caps and given by the following equation: p i is the internal water pressure in MPa, which shall be 0,1 times the value of PN; d i is the calculated inside diameter of the PVC-U pipe
43、, i.e. (d n 2e n ). Fe p i( ;d i 2 4 -) = + 5 0 % Bending force F on the double-socket coupler (in newtons) PN 6,0 6,3 8 10 12,5 16 d n S 20,8 S 20 a S 16 S 12,5 S 10 S 8 110 125 160 200 250 1 179 1 555 2 511 3 867 6 078 1 217 1 594 2 640 4 013 6 376 1 510 1 975 3 155 5 012 7 763 1 833 2 385 3 955 6
44、 127 9 540 2 280 2 930 4 816 7 500 11 592 2 748 3 489 5 738 8 989 13 956 315 355 400 500 630 9 588 12300 15468 24311 38 353 9 923 12 647 16 050 25 220 39 690 12 321 15 587 19 830 30 778 48 939 14 817 18 797 23 654 37 893 59 602 18 413 23 377 29 797 46 622 73 651 22 235 28 284 35 765 56 064 a S is th
45、e pipe series conforming to ISO 4065:1996.ENISO 13783:1997 6 BSI 05-1999 At E: maintain the water pressure at 1 times PN for a further period of5min whilst maintaining the bending force F. At F: reduce the water pressure to atmospheric pressure within5min and ensure that the deflection of the pipe i
46、s maintained constant for a further period of5min. At G: increase the water pressure within a period of5min to1times PN. At H: adjust the bending force, F, to its original value. (The angle of deflection will normally be a little greater than at E.) Repeat the cycle from E to H a further nine times.
47、 At K: at the end of the 10th cycle, release the bending force and drain the water from the assembled test piece. Apply a negative pressure to the test piece until a constant pressure of (0,1 0,02)bar is achieved. Isolate the vacuum pump from the test piece, and observe the pressure for15min. Apply
48、a further negative pressure to the test piece until a constant pressure of (0,8 0,02)bar is achieved, then isolate the vacuum pump from the test piece, and observe any increase in pressure for a further15min. 6.6 On completion of the test disassemble the joints and examine all parts for details of a
49、ny cracks and deformations and record the results. 7 Test report The test report shall include the following information: a) a reference to this standard, and to the referring standard; b) the nominal pressure, PN, of the double-socket coupler and the nominal pressure, PN, or pipe series S of the PVC-U pipe; c) the bending force, F, applied; d) the ambient temperature during the test; e) all information on the leaktightness of the joint; f) the result of the visual inspection of
