British Standard I S B ) c ( , y p o C d e l l o r t n o c n U , 3 0 0 2 e n u J 5 2 , h g u o r o b h g u o L f o y t i s r e v i n U , r z v c o b l r z v c o b l : y p o C d e s n e c i L
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25 June 2003
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BRITISH STANDARD
BS 4346-1: 1969 Incorporating Amendment Nos. 1, 2, 3, 4 and 5
Specification for
Joints and fittings for use with unplasticized PVC pressure pipes — I S B ) c ( , y p o C d e l l o r t n o c n U , 3 0 0 2 e n u J 5 2 , h g u o r o b h g u o L f o y t i s r e v i n U , r z v c o b l r z v c o b l : y p o C d e s n e c i L
Part 1: Injection moulded unplasticized PVC fittings for solvent welding for use with pressure pipes, including potable water supply
UDC 621.643.4:678.743.22 621.643.4:678.743.22
BS 4346 4346-1: -1:19 1969 69
Co-operating organizations The Plastics Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Board of Trade
Oil Companies Materials Association*
Brit British ish Elect Electri rica call and and Alli Allied ed Manu Manufa fact ctur urer ers’ s’ Association
Plas Plasti tics cs Inst Instit itut ute e Post Office
British Plastics Federation*
Royal Institute of British Architects*
Electrical Research Association
Royal Institute of Public Health & Hygiene
Enginee Engineerin ring g Equi Equipme pment nt Users’ Users’ Associ Associati ation* on*
Rubber Rubber and Plasti Plastics cs Resear Research ch Associa Association tion of
Ministry of of De Defence, Ar Army De Department* Mini Minist stry ry of Defe Defenc nce, e, Navy Navy Depa Depart rtme ment nt* *
Great Br Britain Soci Societ ety y of Moto Motorr Man Manuf ufac actu ture rers rs and and Trad Trader erss
Ministry of Public Building and Works,
I S B ) c ( , y p o C d e l l o r t n o c n U , 3 0 0 2 e n u J 5 2 , h g u o r o b h g u o L f o y t i This British Standard, having s r been approved by the Plastics e v Industry Standards i Committee, was published n Committee, under the author authority ity of the Uunder , Executive Executive Board Board on r z 13th February 1969 v c o © BSI 09-1999 b l r z v The following BSI references c relate to the work on this o standard: b l : Committee references PLM/9, y PLM/9/2 p o Draft for comment 67/28780 C d e ISBN 580 00414 7 s n e c i L
Building Research Station*
Ltd. Surface Coating Synthetic Resin
Ministry of Technology
Manufacturers’ Association
The Government departments and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: British In Industrial Bi Bio lo logical Re Rese ar arch Association
Institutio n of Ci Civil En Enginee rrss Institution of Municipal Engineers
Brit Britis ish h Mech Mechan anica icall Rubb Rubber er Man Manuf ufac actu turer rers’ s’ Association
Inst Instit itut ution ion of Pub Publi licc Hea Healt lth h Eng Engin ineer eerss Institution of Water Engineers
Brit Britis ish h Rubb Rubber er Manu Manufa fact ctur urer ers’ s’ Asso Associ ciat atio ion n Ltd.
Lloy Lloyd’ d’ss Regi Regist ster er of Ship Shippi ping ng Ministry of Agriculture, Fisheries and Food
British Waterworks Association
Ministry of Housing and Local Government
Chemical Industries Association
Ministry of Public Building and Works
Copper Tu Tube Fi Fitti ng ngs Ma Manufacturers’
Natio na nal Br Bras sf sfoundry As Association
Association
National Coal Board
Food Food Manufa Manufactu cturer rerss Federat Federation ion Incor Incorpor porate ated d
Nation National al Feder Federati ation on of Plumb Plumbers ers and and Domesti Domesticc
Gas Council
Heating Engineers
Gas List Tube Association
Plastic Pipe Manufacturers’ Society
Institute of Brewing
Water Companies Association
Institute of Plumbing
Water Research Association
Amendments issued since publication Amd. No.
Date of issue
Comments
1007
August 1972
1605
November 1974
2014
June 1976
5340
August 1987
5806
December 1987 Indicated by a sideline in the margin
BS 43464346-1:1 1:196 969 9
Contents
Co-operating organizations Foreword 1 2 3 4 5 6 7
I S B ) c ( , y p o C d e l l o r t n o c n U , 3 0 0 2 e n u J 5 2 , h g u o r o b h g u o L f o y t i s r e v i n U , r z v c o b l r z v c o b l : y p o C d e s n e c i L
© BSI 09-1999
Page Inside front cover ii
Scope Material Dimensions Physical and chemical characteristics Hydraulic pressure tests Sampling Marking
1 1 1 2 3 3 4
Appendix A Stress relief test Appendix B Test for resistance to sulphuric acid Appendix C Text deleted Appendix D Text deleted Appendix E Hydraulic pressure tests Appendix F Sampling quantities Appendix G Text deleted Appendix H Text deleted
5 5 5 5 6 7 7 7
Figure 1 — Socket dimensions
2
Table 1 — Socket dimensions
1
i
BS 4346 4346-1: -1:19 1969 69
Foreword This standard makes reference to the following British Standards: BS 2782, Methods of testing plastics. BS 3505, Unplasticized PVC pipe for cold water services. BS 3506, Unplasticized PVC pipe for industrial uses. BS 9001, Sampling procedures and tables for inspection by attributes for electronic parts of assessed quality. CP 310, Water supply. CP 312, Plastics 312, Plastics pipework (thermoplastic material). material). CP 312-1, General principles and choice of material. CP 312-2, Unplasticized PVC. I S B ) c ( , y p o C d e l l o r t n o c n U , 3 0 0 2 e n u J 5 2 , h g u o r o b h g u o L f o y t i s r e v i n U , r z v c o b l r z v c o b l : y p o C d e s n e c ii i L
This British Standard has been prepared under the authority of the Plastics Industry Standards Committee. Where appropriate the requirements, including those for effect on water, are the same as specified in BS 3505 1). However, a stress relief test is included instead of a test for impact st rength which is not considered to be meaningful when applied to fittings. No hydraulic proof test is included in the requirements but a suitable test procedure is laid down in CP 310 2). Dimensions are expressed in metric units but it has been decided to continue to designate the nominal size nominal size of fittings in inches, because it is thought that considerable confusion would be caused if these were changed to metric units at this stage. The requirements for the effects of materials upon water quality have been updated to enable fittings complying with this British Standard to be acceptable to UK water undertaking. Attention is drawn to CP 3123) which has been prepared to assist users in assessing the suitability of plastics pipes for particular purposes and to ensure their proper application. Attention is drawn to other Parts of this stand ard, as follows: — Part — Part 2: Mechanical joints and fittings, principally of unplasticized PVC. PVC. — Part — Part 3: Specification for solvent cement. A British Standard does not purport 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 cover, pages i and ii, pages 1 to 7 and a back cover. 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.
1)
BS 3505, “Unplasticized “ Unplasticized PVC pipe for cold water services”. services ”. CP 310, “Water “Water supply”. supply”. 3) CP 312, “ Plastics pipework (thermoplastic material)”, material)”, Part 1, “General “ General principles and choice of material”, material”, Part 2, “Unplasticized “Unplasticized PVC ”. ”. 2)
© BSI 09-1999
BS 43464346-1:1 1:196 969 9
1 Scope 1.1 This British Standard applies to injection moulded pipe fittings made from unplasticized polyvinyl chloride and of which one or more of joints is intended, for solvent welding to unplasticized polyvinyl chloride pressure pipes conforming to the dimensions of Table 1 of BS 35054) and Table 1 of BS 3506 35065).
I S B ) c ( , y p o C d e l l o r t n o c n U , 3 0 0 2 e n u J 5 2 , h g u o r o b h g u o L f o y t i s r e v i n U , r z v c o b l r z v c o b l : y p o C d e s n e c i L
1.2 Fittings complying with this standard are suitable for potable water supplies in conjunction with pipe complying complying with BS 3505, and may also be used for industrial purposes in conjunction with pipe complying complying with with BS 3506.
3.2 At 3.2 At no place shall the internal diameter of a socket be greater than the mouth internal diamet er of the same socket. The diameter of the socket may decrease from mouth to root, for pipe nominal size ) to 2" the total included angle of taper shall not exceed 0° 40½, and for pipe pipe nominal nominal size 3 and above above the total included angle of taper shall not exce exceed ed 0° 30½. 3.3 An 3.3 An out of roundness tolerance of ± 0.2 0.2 % is allowed on the mid mean socket internal diameter. Table 1 — Socket dimensions (See Figure 1) Nominal size
2 Material
mm
2.1 The material from which the fittings are made shall consist substantially of polyvinyl chloride to which may be added only those additives that are needed to facilitate the manufacture of t he polymer and of sound, durable fittings, with good surface finish, mechanical strength and opacity. None of these additives shall be used separately or together in quantities sufficient to constitute a toxic hazard, or to impair the chemical and physical properties of the fittings as defined in this standard.
Minimum
Maximum
mm
mm
#
17.1 21.3 26.7
17.3 21.5 26.9
1 1! 1"
22.5 27.0 30.0
33.5 42.2 48.2
33.7 42.4 48.4
2 2" 3
36.0 43.5 50.5
60.3 75.1 88.8
60.5 75.3 89.1
4 5 6
63.0 76.0 90.0
114.2 140.1 168.2
114.5 140.4 168.5
7 8 9a
103.0 115.5 128.0
193.7 219.0 244.3
194.0 219.4 244.8
10a 12a
142.5 168.0
272.8 323.7
273.4 324.3
"
2.3 When tested in accordance with BS 2782:Method 2782:Method 120B6), the deformation temperature of the material under load shall not be lower lower than 72 ° C.
3 Dimensions
NOTE NOTE The minimu minimum m sock socket et dept depths hs (L (L) have been calculated using the formula: L = 0.5 D + 6 mm (0.2 (0.236 36 in) in) where D where D = = mean outside diameter of the pipe (see 1.1). 1.1). This is the formula given in ISO 727 7).
Mean socket internal diameter at mid point of socket depth
14.5 16.5 19.5
)
2.2 Text deleted.
3.1 The sockets of the fittings shall conform to the dimensions specified in Table 1 taken at the mid point of the socket depth.
Minimum socket depth L
a
Joints in these sizes require special techniques for solvent cementing and the advice of the manufacturer should be sought. NOTE Where applicable, applicable, the spigot spigot end(s) end(s) of a fitting fitting shall shall have a minimum length equal to the minimum socket depth, and their diameter(s) shall conform to Table 1 of BS 3505:1968.
4)
BS 3505, “Unplasticized “Unplasticized PVC pipe for cold water services”. services ”. BS 3506, “Unplasticized “Unplasticized PVC pipe for industrial uses”. uses ”. 6) BS 2782, “Methods “Methods of testing plastics:Method plastics:Method 120B”. 120B”. 7) ISO 727, “Socket “Socket fittings for pipes under pressure. Unplasticized polyvinyl chloride (PVC) fittings with plain sockets. Metric series”. series”. 5)
© BSI 09-1999
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BS 4346 4346-1: -1:19 1969 69
I S B ) c ( , y p o C d e l l o r NOTE This drawing drawing is only intended intended to define define the terms used in Table Table 1 and is not intended intended to illustrate illustrate specific specific design design features. features. t n Figure 1 — Socket dimensions o c n U4 Physical and chemical 4.2 Resistance to sulphuric acid. When acid. When tested by , 3 characteristics the method described in Appendix B, the mass of the 0 fitting shall neither neither increas increase e by more more than 3.16 g 0 2 4.1 Stress relief test. When test. When tested by the method nor decrease decrease by more than 0.13 g. The effect effect of the e described in Appendix A, none of the specimens acid on the surface appearance of the fittings n u tested shall show blisters, excessive delamination or (roughening, bleaching or blackening) shall be J cracking, or signs of weld line splitting. The weld ignored. 5 2 line or lines may become more pronounced during 4.3 Opacity. When Opacity. When tested in accordance with , h the test, but this shall not be deemed to constitute BS 2782:Method 2782:Me thod 1104 A 8) the wall of the fitting g failure. u shall not not transmit transmit more than 0.2 % of the visible visible o r For fittings moulded by conventional techniques, light falling on to it. o b special care shall be taken in examining the area 4.4 Effect on non-metallic materials on water h around the point of injection, where no cracks or g quality u delamination shall penetrate to a depth greater o thickness. For For fittings fittings When used under the conditions for which they are L than 20 % of the wall thickness. f moulded by end gating techniques, e.g ring or designed, non-metallic materials in contact with or o likely to come into contact with potable water shall y diaphragm methods, any cracks or delaminations in t i the wall of the fitting adjacent to the injection area not constitute a toxic hazard, shall not support s r e shall be parallel to the axis and shall not penetrate microbial growth and shall not give rise to v i depth of more more than than 20 % of the the socket socket depth. depth. unpleasant taste or odour, cloudiness or n to a depth discoloration of the water. UThe assessment of the depth of penetration of cracks , or delaminations shall be carried out by sectioning r z v the specimen at the point of injection and measuring c o the depth to which these defects penetrate the wall b l thickness of the fitting. r z v c o b l : y p o C d 8) BS 2782, “Methods “ Methods of testing plastics” plastics” Part 11:Method 1104 “Measurement “ Measurement of opacity of thermoplastics pipes and fittings”. fittings”. e s n e © BSI 09-1999 c 2 i L
BS 43464346-1:1 1:196 969 9
Concentrations of substances, chemicals and biological agents leached from materials in contact with potable water, and measurements of the relevant organoleptic/physical parameters shall not exceed the maximum values recommended by the World Health Organization in its publication “Guidelines for drinking water quality, Vol.1 Recommendations” Recommendations” (WHO, Geneva, 1984)9) or as required by the EEC Council Directive of 15 July 1980 relating to the quality of water intended for human consumption (Official Journal of the European Communities L229, pp 11–29)9), whichever in each case is the more stringent. I S B ) c ( , y p o C d e l l o r t n o c n U , 3 0 0 2 e n u J 5 2 , h g u o r o b h g u o L f o y t i s r e v i n U , r z v c o b l r z v c o b l : y p o C d e s n e c i L
NOTE 1 Requirement Requirementss for the testing testing of non-metal non-metallic lic materials materials in these respects are set out in the UK Water Fittings Byelaws Scheme Information and Guidance Note No. 5-01-02, ISSN 0267-0313, obtainable from the Water Research Centre, Water Byelaws Advisory Service, 660 Ajax Avenue, Slough, Berkshire SL1 4BG. NOTE 2 Pending Pending the the determinat determination ion of suitable suitable means means of characterizing the toxicity of leachates from materials in contact with potable water, materials approved by the Department of the Environment Committee on Chemicals and Materials of Construction for use in Public Water Supply and Swimming Pools are considered free from toxic hazard for the purposes of compliance with this subclause. A list of approved chemicals and materials is available from the Technical Secretary of that Committee at the Department of the Environment, Water Division, Romney House, 43 Marsham Street, London SW 1P 3PY. NOTE 3 Products Products manufact manufactured ured for for installati installation on and use in the United Kingdom which are verified and listed under the UK Water Fittings Byelaws Scheme administered by the Water Research Centre (address as in note 1) are deemed to satisfy the requirements detailed in this subclause.
5 Hydraulic pressure tests 5.1 Long-term hydraulic test (Type test). When test). When tested by the method described in Appendix E.1, E.1, the extrap extrapola olated ted 1 hour hour and and 50 year year failu failure re pres pressur sures es shall be be respectively respectively not less than than 3.6 times and not not less than than 2.1 times the working working pressures pressures of of the joint or fitting. 5.2 Short-term hydraulic test (Batch test). When tested by the method described in Appendix E.2, E.2, the joint or fitting shall withstand a pressu pressure re of 3.6 ± 0.1 times the working working pressure pressure for 1 hour hour withou withoutt failur failure. e. 5.3 Joints and fittings that have been used for the hydraulic pressure tests are not suitable for subsequent use in service, and shall not be taken back into stock.
6 Sampling 6.1 Type tests. Type tests. Type tests are intended to prove the suitability and performance of a new composition, a new compounding or processing technique, or a n ew design or size of joint or fitting. Such tests therefore need be applied only when a change is made in polymer composition or method of manufacture, or when a new size or type of fitting is to be introduced. Type tests for compliance with Clauses 3 and 4.1 shall be carried out on three samples taken at random from each size, class and design of fittings. Type tests for compliance with 4.3 and 4.3 and 4.4 shall 4.4 shall be carried out on three samples taken at random from the smallest size and lowest class of fitting (i.e. on fittings having the thinnest wall and greatest surface-area: mass ratio). Type tests for compliance with 4.2 shall 4.2 shall be carried out on three samples taken at random from the complete size an d class range of fittings. All the fittings tested shall comply with the requirements for which they are examined. For examination for compliance with 5.1 the 5.1 the manufacturer shall take sufficient random samples to define define the adequacy adequacy of of the extrapola extrapolated ted 1 hour and 50 year failure failure pressures pressures with a reasonable reasonable degree of confidence. Testing shall continue until it is established established that that the lower lower 95 % confidence confidence limits limits for the extrapo extrapolated lated failure failure pressure pressuress at 1 hour and at 50 years equal or or exceed exceed the requirements requirements specified in 5.1. 5.1. 6.2 Batch tests. Batch tests. Batch tests are spot tests carried out during manufacture to prove the quality of a production run of fittings, and shall be carried out by the methods specified in Clauses 3, 4.1 and 4.1 and 5.2. 5.2. 6.2.1 From each production run, the manufacturer shall take at random the number of fittings required by Scheme Scheme 1 given in Appendix Appendix F for each each test. test. Sampling of batches composed of not more than 90 fittings fittings shall be subject subject to agreement agreement between purchaser and vendor. A batch is defined as the production of an injection moulding machine from the time it commences to produce fittings complying with this standard until it is closed down. 6.2.2 If all fittings pass the tests the production batch shall be deemed to comply with this standard. 6.2.3 If any fittings fail any of the tests, the manufacturer shall have the option of either: 1) retesting the production batch as above but on a number of fittings for each test according to Scheme Scheme 2 given given in Appen Appendix dix F, or or
9)
Available from IIMSO.
© BSI 09-1999
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BS 4346 4346-1: -1:19 1969 69
2) dividing the production batch into several lots of any convenient size and testing from each lot the number of fittings for each test according to the requireme requirements nts of Scheme Scheme 2 (i.e. applied applied to the size of each lot). 6.2.4 If the manufacturer manufacturer chooses chooses option 1), and if all the fittings pass the tests, the production batch shall be deemed to comply with this standard. If any fittings fail any test, the production batch shall be deemed not to comply with this standard. 6.2.5 If the manufacturer manufacturer chooses chooses option 2), the requirements of 6.2.4 of 6.2.4 shall shall apply to each lot. NOTE 1 This sampling sampling procedure procedure is designed designed to be undert undertaken aken
3) The nominal size, as shown in Table 1. 4) The appropriate appropriate class of BS 3505 to which the pressure rating of the fitting corresponds. NOTE NOTE The mark mark BS 4346-1 4346-1 on or or in relati relation on to the the product product is a claim by the manufacturer that it complies with the requirements of the standard. The British Standards Institution is the owner of a registered certification trade mark. This is shown below, enclosed in the words “Approved to British Standard”. This mark can be used only by manufacturers licensed under the certification mark scheme operated by BSI. The presence of this mark on or in relation to a product is an assurance that the goods have been produced to comply with the requirements of the British Standard under a system of supervision, control and testing operated during manufacture and including periodical inspection at the manufacturer’s works in accordance with the certification mark scheme of BSI.
I by the manufacturer at his works. Additional specimens may be Stested and witnessed at the works by arrangement at additional Bcost to the customer. Further particulars of the terms of licence may be obtained from ) the Director General, British Standards Institution, 2 Park c NO NOTE TE 2 Schem Schemes es 1 and and 2 give given n in Appe Append ndix ix F are are based based on ( 10) Street, London, W.I. , recommendations contained in BS 9001 and Defence Guide y DG-7-A, “Sampling Inspection” (April, 1966) issued by the p o Ministry of Defence and obtainable from H.M. Stationery Office. C6.3 Notwithstanding the requirements of 6.1 of 6.1 d and 6.2 in 6.2 in respect of sampling for testing by the e l l manufacturer, fittings tested by the purchaser or o r otherwise, subsequent to manufacture, shall comply t n o with all the requirements of this standard. c n U7 Marking , 3 7.1 All 0 7.1 All fittings shall be marked to show, in the order 0 stated: 2 1) The manufacturer’s identification. e n u 2) The number of this British Standard, J i.e. i.e. BS 4346-1. 4346-1. 5 2 , h g u o r o b h g u o L f o y t i s r e v i n U , r z v c o b l r z v c o b l : y p o C d 10) BS 9001, “Sampling “ Sampling procedures and tables for inspection by attributes for electronic parts of assessed quality”. quality ”. e s n e © BSI 09-1999 c 4 i L
BS 43464346-1:1 1:196 969 9
Appendix A Stress relief relief test A.1 This test may be carried out either in an air oven or alternatively in a bath of polyethylene glycol, glycerol or a mineral oil free from aromatic hydrocarbons. A.2 Test specimens. Three specimens. Three specimens of the type and size of fitting under test shall be selected at random. A.3 Oven method An electrically-heated air oven with circulating fan, the whole interior of which is A.3.1 Apparatus. A.3.1 Apparatus. An maintained maintained automatically automatically at a temperature of 150 ± 4 ° C. A.3.2 Procedure. A.3.2 Procedure. The The specimens shall be placed in the oven standing on one socket mouth. The specimens may be supported if necessary by a simple jig that has been preheated in the oven. The specimens shall be kept in the oven for a period determined as follows: 1) For fittings fittings of wall thickne thickness ss not greater greater than than 8.6 mm p 60 min, min, I S B ) c ( , y p o C d e l l o r t n o c n U , 3 0 0 2 e n u J 5 2 , h g u o r o b h g u o L f o y t i s r e v i n U , r z v c o b l r z v c o b l : y p o C d e s n e c i L
2) For For fittings fittings of wall wall thickness thickness greater greater than than 8.6 mm but not greater greater than 14.1 mm p 120 120 min. min. 3) For fittings fittings of wall thickness thickness greater greater than 14.1 mm p 240 240 min. min. The time shall be measured from the time at which the oven regains the temperature of 150 ° C. After the specified heating period, the specimens shall be removed from the oven and allowed to cool naturally in air before examination. A.4 Immersion method A.4.1 Apparatus. A.4.1 Apparatus. A A thermostatically-controlled bath in which the heat transfer medium is polyethylene glycol, glycerol or mineral oil free from aromatic hydrocarbons. The bath is stirred continuously and maintained maintained automatically automatically at a temperature of 150 ± 4 ° C. A.4.2 Procedure. A.4.2 Procedure. The The specimens shall be placed in the bath standing on one socket mouth. The specimen shall be immersed in the bath for a period determined as follows: 1) For fitting fittingss of wall wall thickn thickness ess not not greater greater than 8.6 mm : 15 min. min. 2) For For fittin fittings gs of wall wall thickn thickness ess grea greater ter than than 8.6 mm but but not grea greater ter than than 14.1 14.1 mm : 30 min. min. 3) For For fitting fittingss of wall wall thickn thickness ess grea greater ter than than 14.1 mm : 60 min. min. The time shall be measured from the moment at which the bath regains a temperature of 150 ° C. After the specified immersion period the specimens shall be removed from the bath, and a llowed to cool naturally in air before examination.
Appendix B Test Test for resistance resistance to sulphuric sulphuric acid B.1 Form of test specimens. The specimens. The test specimens shall be cut from fittings or from sheet moulded from the same batch of material, and shall each have a total surface area of 45 ± 3 cm2 (7.0 ± 0.5 in2). B.2 Apparatus. The Apparatus. The apparatus shall consist of a bath of sulphuric acid at a concentration of 93 ± 0.5 % (m/m) capable capable of being automatic automatically ally maintained maintained at a temperature temperature of 55 ± 2.0 ° C for for 14 days days.. Care shall be taken to avoid gradual concentration of the acid du ring the test due to evaporation losses, etc. B.3 Procedure. Clean, Procedure. Clean, wipe dry and weigh three specimens. Totally immerse them in the acid at the specified specified concentra concentration tion and temperat temperature ure for 14 days. After the specified period, the specimens shall be removed, washed in running water for 5 minutes, wiped dry with a clean cloth and reweighed immediately. The average change in mass shall not exceed the value given in 4.2. 4.2.
Appendix C Test Test for opacity Text deleted
Appendix D Test Test for effect effect on water Text deleted
© BSI 09-1999
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BS 4346 4346-1: -1:19 1969 69
Appendix E Hydraulic Hydraulic pressure pressure tests NOTE These tests tests are intended intended to establish the the quality of the fittings fittings therefore therefore the result result of a test in which there is a premature premature failure of any other component of the test specimen before the required pressure is reached shall be discarded and a further test specimen shall be prepared and tested.
E.1 Long-term hydraulic test (Type test) E.1.1 Apparatus. E.1.1 Apparatus. A A temperature-controlled water bath or air space maintained at 20 ± 1 ° C, and equipment that permits the joint or fitting to be subjected to an internal hydraulic pressure to an accuracy of ± 2 %. E.1.2 Form and preparation of test specimen. The specimen shall be a run of pipe incorporating a complete joint or fitting assembly. It shall be made up by solvent welding welding to each spigot or socket of the joint or fitting a piece of PVC pipe at least 250 mm, or twice the nominal pipe size, size, in length (whichever (whichever is the greater). greater). 11) The pipes shall shall comply with with BS 3505 and shall have a working pressure not less than that of the joint or fitting. The open ends of the pipes shall be closed with end caps, provided with connections for the entry of I Swater under controlled pressure.
BE.1.3 Procedure. E.1.3 Procedure. The The specimen shall be made up and then left empty and undisturbed to mature at ambient ) c temperatures tempera tures for at least 14 days (or for a longer period period if recommended recommended by the solvent cement cement ( , manufacturer) specimen shall be mounted in the apparatus apparatus and conditioned conditioned for 1 hour y manufacturer).. The matured specimen p at 20 ± 1 ° C. The hydraul hydraulic ic test pressur pressure e shall then be applied applied and and achieved achieved within within 30 to 40 seconds seconds of first first o admitting pressure and shall be maintained with an accuracy of 2 %. The test shall sha ll be continued cont inued in the ± C d apparatus until the pipe, joint or fitting fails. e l l The specimen shall be made up and m ounted in the apparatus in such a way t hat it is subjected throughout o r the test to the full end thrust produced by the applied hydraulic pressure. t n E.1.4 Assessment of results. Each results. Each test result shall be entered on a log(pressure) versus log(time) graph. o E.1.4 Assessment c When sufficie su fficient nt results, res ults, with with failure failure times times extendin extending g over over a range range from from about about 1 hour to 1 000 hours, have n Ubeen obtained they shall be subjected to regression analysis so as to obtain representative , extrapolated 1 hour and and 50 year pressure pressure levels. levels. These extrapolated extrapolated levels levels shall shall meet meet the requireme requirements nts 3 extrapolated 0 of 5.1 of 5.1. . 0 2 The extrapolated pressure levels shall be obtained by substituting the appropriate values for log(time) in e n the linear regression equation for log(time) upon log(pressure). The regression equation shall be calculated u J by the method of least squares. 5 E.2 Short-term hydraulic test (Batch test) 2 , E.2.1 Apparatus. A A temperature-controlled water bath or air space maintained at 20 ± 1 ° C, and h E.2.1 Apparatus. g equipment that permits the joint or fitting to be subjected to an internal hydraulic pressure to an accuracy u o of ± 2 %. r o specimen. The specimen shall be a complete joint or fitting. The open b E.2.2 Form and preparation of test specimen. The h ends of the joint or fitting may be closed internally with male plugs and flexible seals such as OO- or g u U-section rubber rings. The plugs may be retained in place by a jig or former, and shall be provided with o L connections for the entry of water under controlled pressure. f o E.2.3 Procedure. E.2.3 Procedure. The The specimen specimen shall shall be mounted mounted in the apparatus apparatus and and conditioned conditioned for for 1 hour at at 20 ± 1 ° C. y hydraulic test test pressure pressure shall shall then be applied applied and achieve achieved d within 30 to 40 seconds seconds of first first admitting admitting t i The hydraulic s for a per perio iod d of of 1 hour hour.. r pressure and shall be maintained with an accuracy of ± 2 % for e v i n U , r z v c o b l r z v c o b l : y p o C 3505, “Unplasticized “Unplasticized PVC pipe for cold water services”. d 11) BS 3505, services ”. e s n e © BSI 09-1999 c 6 i L
BS 43464346-1:1 1:196 969 9
Appendix F Sampling Sampling quantities quantities Scheme 1
I S B ) c ( , y p o C d e l l o r t n o c n U , 3 0 0 2 e n u J 5 2 , h g u o r o b h g u o L f o y t i s r e v i n U , r z v c o b l r z v c o b l : y p o C d e s n e c i L
Number of fittings failures for
Number of specimens for each test
Number of fittings in batch
Batch acceptance
Batch rejection
91 to 150 151 to 280 281 to 500
3 3 3
0 0 0
1 1 1
501 501 to 1 200 200 1 201 201 to to 3 200 200 3 201 201 to 10 000 000
5 5 5
0 0 0
1 1 1
10 001 001 to to 35 35 000 000 35 001 001 to 150 150 000 000
5 8
0 0
1 1
Scheme 2 Number of fittings in batch
Number of fittings failures for
Number of specimens for each test
Batch acceptance
Batch rejection
91 to 150 151 to 280 281 to 500
3 5 5
0 0 0
1 1 1
501 501 to 1 200 200 1 201 201 to to 3 200 200 3 201 201 to 10 000 000
5 8 8
0 0 0
1 1 1
8 13
0 0
1 1
10 001 001 to to 35 35 000 000 35 001 001 to 150 150 000 000
Appendix G Method Method for the determination determination of organotin as tin in aqueous aqueous solution Text deleted
Appendix H Specification for for solvent cements cements for use use with injection injection moulded unplasticized PVC fittings for solvent welding Text deleted
© BSI 09-1999
7
BS 4346-1: 1969
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