Source: https://fr.scribd.com/document/158923996/CED50-7434
Timestamp: 2019-12-15 20:19:37
Document Index: 157443768

Matched Legal Cases: ['ART 4', 'art 1', 'art 2', 'art 3', 'art 4', 'art 5', 'art 6', 'art 7', 'art 8', 'art 9', 'art 10', 'art 11', 'art 12', 'art 13', 'art 4', 'ART 4', 'art 4', 'art 1', 'art 1']

CED50(7434) | Pipe (Fluid Conveyance) | Building Engineering
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Doc: CED 50(7434)
DRAFT FOR COMMENTS ONLY
Draft Indian Standard SPECIFICATION FOR FABRICATED PVC FITTINGS FOR POTABLE WATER SUPPLIES PART 4 SPECIFIC REQUIREMENTS FOR CAPS (Second Revision) ICS No. 23.040.45;91.140.60 ________________________________________________________________ Plastic Piping Systems Last Date for receipt of Sectional Committee CED 50 Comments is 15 10 2007 ________________________________________________________________ FOREWORD (Formal clause of the foreword will be added later) The requirements of fabricated PVC fittings are covered in following thirteen parts of the standard: Part 1 General requirements Part 2 Specific requirements for sockets Part 3 Specific requirements for straight reducers Part 4 Specific requirements for caps Part 5 Specific requirements for equal tees. Part 6 Specific requirements for flanged tail pieces with metallic flanges Part 7 Specific requirements for threaded adaptors Part 8 Specific requirements for 90o bends Part 9 Specific requirements for 60obends Part 10 Specific requirements for 45o bends Part 11 Specific requirements for 30o bends Part 12 Specific requirements for 22 o bends Part 13 Specific requirements for 11 obends This Indian Standard (Part 4) was first published in 1982. First revision was issued in 1988. In this revision, following modifications have been made:
Sizes and classes of fittings have been aligned with IS 4985:2000 `Unplasticized PVC pipes for potable water supplies Specification.
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.
For BIS Use Only BUREAU OF INDIAN STANDARDS DRAFT FOR COMMENTS ONLY
Draft Indian Standard SPECIFICATION FOR FABRICATED PVC FITTINGS FOR POTABLE WATER SUPPLIES PART 4 SPECIFIC REQUIREMENTS FOR CAPS (Second Revision)
1 SCOPE This standard (Part 4) lays down the requirements for manufacture, dimensions and marking for fabricated PVC caps for potable water supplies. 2 REFERENCES The following Indian Standards 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 fittings for potable water supplies Specification 1(under General requirements
Part revision)
3 REQUIREMETNS 3.1 General The general requirements for materials, sizes, tests, sampling and criteria for conformity shall conform to IS 10124 (Part 1). 3.2 Manufacture 3.2.1 Typical illustration of caps is given in Fig. 1.
*PVC welded by solvent or welding rod and with of without fiber glass reinforcement. D = mean socket internal diameter of mid-point of socket length as specified in IS 10124 (Part 1) L = Effective minimum socket length t = minimum wall thickness of caps calculated on the basis of 90 percent of the minimum wall-thickness of the corresponding size and pressure class of the pipe, rounded off to the next higher 0.1 mm.
NOTE The drawing are only intended to define the terms used in Table 1 and are not intended to illustrate specific design features.
3.2.2 Dimension The dimensions of caps shall comply with those given in Table 1 read with fig. 1
NOTE For pipes of 0.25 MPa and 0.4 MPa pressure class, there are no caps and for these, the caps designed and for 0.6 MPa working pressure may be used.
Table 1 DIMENSIONS OF CAPS ( Clause 3.2.2 and Fig.1) All dimensions in millimetres.
Effective Socket length L
Minimum Wall Thickness ( t ) For Working Pressure
(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) 26.0 31.0 38.0 44.0 51.0 61.0 69.0 69.0 76.0 96.0 106.0 119.0 131.0 146.0 176.0 200.0 226.0 256.0 286.0
0.6 MPa (Class 3) (4 ) 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 MPa (Class 4) (5) 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
1.0 MPa (Class 4) (6) 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 MPa (Class 5) (7) 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
4 MARKING 4.1 Each end cap shall be marked with the following information: a) Manufactures name or identification mark,
b) Size of the cap and the appropriate class ( working pressure) of IS 4985 to which the pressure rating of the fitting corresponds, and c) The cap shall be marked in colour as indicated below for different classes of fittings : Class of the fittings Class 3 (0.6 MPa) Class 4 (0.8 MPa) Class 5 (1.0 MPa) Class 6 (1.25 MPa) 4.2 BIS Certification Marking Colour Green Brown Yellow Black
4.2.1 Each Fitting may be also be marked with the Standard Mark. 4.2.2 The use of the standard mark is governed by the provisions of the Bureau of Indian Standard Act 1986 and the rules and Regulations made there under. Details of conditions under which a license for the use of the Standard Mark may be granted to the manufacturer or producer may be obtained from the Bureau of Indian Standards.
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