IS 10124 (Part 8) : 2009 Hkkjrh; ekud is; ty vkiwfrZ ds fy, lfojafpr ih oh lh-;w fiQfVaxsa -- fof'kf"V Hkkx 8 90 cSaMksa dh fof'k"V vis{kk,¡ o ( nwljk iqujh{k.k ) Indian Standard FABRICATED PVC-U FITTINGS FOR POTABLE WATER SUPPLIES -- SPECIFICATION PART 8 SPECIFIC REQUIREMENTS FOR 90 BENDS o ( Second Revision ) ICS 23.040.45; 91.140.60 © BIS 2009 B U R EAU O F I N D IAN STAN DAR D S MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 May 2011 Price Group 2 Plastics Piping Systems Sectional Committee, CED 50 FOREWORD This standard (Part 8) (Second Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Plastics Piping Systems Sectional Committee had been approved by the Civil Engineering Division Council. This standard was first published in 1982 and revised in 1988. In this revision, following modifications have been made: a) Sizes and classes of fittings have been aligned with IS 4985 : 2000 `Unplasticized PVC pipes for potable water supplies -- Specification'. b) Requirements for bends for elastomeric sealing ring joints have also been included. The requirements of fabricated PVC-U fittings are covered in thirteen parts. The other parts in the series are: Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7 Part 9 Part 10 Part 11 Part 12 Part 13 General requirements Specific requirements for sockets Specific requirements for straight reducers Specific requirements for caps Specific requirements for equal tees Specific requirements for flanged tail pieces with metallic flanges Specific requirements for threaded adaptors o Specific requirements for 60 bends o Specific requirements for 45 bends o Specific requirements for 30 bends o Specific requirements for 22 ½ bends o Specific requirements for 11 ¼ bends For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the results of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 `Rules for rounding off numerical values (revised)'. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. IS 10124 (Part 8) : 2009 Indian Standard FABRICATED PVC-U FITTINGS FOR POTABLE WATER SUPPLIES -- SPECIFICATION PART 8 SPECIFIC REQUIREMENTS FOR 90 BENDS o ( Second Revision ) 1 SCOPE This standard (Part 8) lays down the requirements for manufacture, dimensions and marking for fabricated PVC-U 90 o bends for potable water supplies. 2 REFERENCES The standards listed below contain provisions, which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreement based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below: IS No. 4985 : 2000 Title Unplasticized PVC pipes for potable water supplies -- Specification (third revision ) Specification for fabricated PVC-U fittings for potable water supplies -- Specification: Part 1 General requirements 3.2.3 The bends may either be plain at both ends or socketed either at one end or at both ends as agreed between the manufacture and the purchaser. In the case of socketed bend, the socket measurement shall comply with IS 10124 (Part 1). NOTE -- For 0.25 MPa pressure class, bends should not be made from 0.25 MPa pressure class pipes. For this bends made from 0.4 MPa pressure class should be used. 4 MARKING 4.1 Each 90 º bend shall be clearly and indelibly marked with the following information: a) Manufacture's name or identification mark, b) Size of the bend and the appropriate class (working pressure) of IS 4985 to which the pressure rating of the fitting corresponds, c) Degree of bend, and d) Bends shall be marked in colour as indicated below for different classes of fittings: Class of the Fittings Class 2 (0.4 MPa) Class 3 (0.6 MPa) Class 4 (0.8 MPa) Class 5 (1.0 MPa) Class 6 (1.25 MPa) Plumbing 4.2 BIS Certification Marking Each bend may also be marked with the Standard Mark. 4.2.1 The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act , 1986 and the Rules and Regulations made thereunder. The details of conditions under which a licence for the use of the Standard Mark may be granted to the manufacturer or producer may be obtained from the Bureau of Indian Standards. Colour Blue Green Brown Yellow Black Pink 10124 (Part 1) : 2009 3 REQUIREMENTS 3.1 General The general requirements for material, sizes, tests, sampling and criteria for conformity shall conform to IS 10124 (Part 1). 3.2 Manufacture 3.2.1 Typical illustration of 90 bend is shown in o Fig. 1. Typical illustration of 90 bend for elastomeric sealing ring joint is shown in Fig. 2. 3.2.2 Dimensions The dimensions of 90 bends shall comply with those given in Table 1 read with Fig.1. The dimensions of o 90 bends for elastomeric sealing ring joint shall comply with those given in Table 2 read with Fig. 2. o o 1 IS 10124 (Part 8) : 2009 FIG. 1 90 BEND Table 1 Dimensions of 90 Bends (Clause 3.2.2, and Fig. 1) All dimensions in millimetres. Sl No. Nominal Size Y Min L (Only for Plain Ends) Min (4) 20 25 32 40 50 63 75 90 110 125 140 160 180 200 225 250 280 315 355 400 450 500 560 630 R Min Minimum Wall Thickness ( t ) for Working Pressure MPa 0.4 (Class 2) (5) 60 75 96 120 150 189 225 270 330 375 420 480 540 600 675 750 840 945 065 200 350 500 680 890 (6) -- -- -- -- -- 1.4 1.7 1.9 2.3 2.7 2.9 3.4 3.8 4.2 4.7 5.2 5.8 6.5 7.3 8.2 9.3 10.3 11.6 13.0 0.6 (Class 3) (7) -- -- -- 1.3 1.5 2.0 2.4 2.8 3.4 3.9 4.4 4.9 5.5 6.2 6.9 7.7 8.6 9.7 10.8 12.2 13.7 15.3 17.2 19.2 0.8 (Class 4) 1.0 (Class 5) 1.25 (Class 6) Plumbing (8) -- 1.1 1.4 1.6 2.1 2.5 3.1 3.6 4.4 5.1 5.7 6.5 7.2 8.0 9.0 10.0 11.3 12.6 14.3 16.1 18.0 20.1 22.4 25.2 (9) 1.0 1.3 1.6 1.9 2.5 3.2 3.8 4.5 5.5 6.3 7.0 8.0 9.0 10.0 11.2 12.5 13.9 15.6 17.7 19.8 22.4 24.8 27.8 31.8 (10) 1.3 1.5 1.9 2.5 3.0 3.8 4.6 5.5 6.7 7.6 8.6 9.8 10.9 12.3 13.8 15.3 17.1 19.3 21.7 24.5 27.5 30.5 34.2 38.4 (11) 2.5 2.6 3.1 3.3 3.4 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- o o (1) i) ii) iii) iv) v) vi) vii) viii) ix) x) xi) xii) xiii) xiv) xv) xvi) xvii) xviii) xix) xx) xxi) xxii) xxiii) xxiv) (2) 20 25 32 40 50 63 75 90 110 125 140 160 180 200 225 250 280 315 355 400 450 500 560 630 (3) 95 118 151 189 236 297 354 424 519 589 660 754 848 942 060 178 319 484 673 884 120 355 638 968 1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 NOTES 1 Minimum wall thickness is calculated on the basis of 90 percent of the minimum wall thickness of the corresponding size and pressure class of pipe rounded off to the next higher 0.1 mm. 2 Y, Min is calculated from 90º × 2 ð R 360º 3 R, Min radius of the bend, is equal to 3 times the nominal outside diameter (D). 2 IS 10124 (Part 8) : 2009 NOTE -- The drawings are only intended to define the terms used in Table 1 and Table 2 and are not intended to illustrate specific design features. F IG. 2 90 BEND FOR ELASTOMERIC SEALING RING J OINT Table 2 Dimensions of 90 Bend for Elastomeric Sealing Ring Joint (Clause 3.2.2, and Fig. 2) All dimensions in millimetres. Sl No. Nominal Size Y Min L (Plain Ends) Min (4) 107 112 118 127 133 139 146 156 164 175 185 198 215 229 242 259 279 298 322 R Min Minimum Wall Thickness ( t ) for Working Pressure MPa 0.4 (Class 2) (1) i) ii) iii) iv) v) vi) vii) viii) ix) x) xi) xii) xiii) xiv) xv) xvi) xvii) xviii) xix) (2) 63 75 90 110 125 140 160 180 200 225 250 280 315 355 400 450 500 560 630 (3) 297 354 424 519 589 660 754 848 942 1 060 1 178 1 319 1 484 1 673 1 884 2 120 2 355 2 638 2 968 (5) 189 225 270 330 375 420 480 540 600 675 750 840 945 1 065 1 200 1 350 1 500 1 680 1 890 (6) -- -- -- 2.3 2.7 2.9 3.4 3.8 4.2 4.7 5.2 5.8 6.5 7.3 8.2 9.3 10.3 11.6 13.0 0.6 (Class 3) (7) 2.0 2.4 2.8 3.4 3.9 4.4 4.9 5.5 6.2 6.9 7.7 8.6 9.7 10.8 12.2 13.7 15.3 17.2 19.2 0.8 (Class 4) 1.0 (Class 5) (8) 2.6 3.1 3.6 4.4 5.1 5.7 6.5 7.2 8.0 9.0 10.1 11.3 12.6 14.3 16.1 18.0 20.1 22.4 25.2 (9) 3.2 3.8 4.5 5.5 6.3 7.0 8.0 9.0 10.0 11.2 12.5 13.9 15.6 17.7 19.8 22.4 24.8 27.8 31.3 1.25 (Class 6) (10) 3.9 4.6 5.5 6.8 7.7 8.6 9.9 11.0 12.3 13.8 15.3 17.1 19.3 21.7 24.5 27.5 30.5 34.2 38.5 o o 3 Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. 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