For BIS Use Only Doc: CED 50(7436) BUREAU OF INDIAN STANDARDS

Transcription

1 For BIS Use Only Doc: CED 50(7436) BUREAU OF INDIAN STANDARDS DRAFT FOR COMMENTS ONLY (Not to be reproduced without the permission of BIS or used as an Indian Standard) Draft Indian Standard SPECIFICATION FOR FABRICATED PVC FITTINGS FOR POTABLE WATER SUPPLIES PART 6 SPECIFIC REQUIREMENTS FOR FLANGED TAIL PIECES WITH METALLIC FLANGES (Second Revision) ICS No ; Plastic Piping Systems Last Date for receipt of Sectional Committee CED 50 Comments is 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 90 o bends Part 9 Specific requirements for 60 o bends Part 10 Specific requirements for 45 o bends Part 11 Specific requirements for 30 o bends Part 12 Specific requirements for 22 ½ o bends Part 13 Specific requirements for 11 ¼ o bends This Indian Standard (Part 6) was first published in First revision was issued in In this revision, following modifications have been made:

2 a) Sizes and classes of fittings have been aligned with IS 4985:2000 `Unplasticized PVC pipes for potable water supplies Specification. b) Requirements for fabricated PVC flanged tail pieces with metallic flanges for elastomeric sealing ring joints have also been included. 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.

3 For BIS Use Only Doc: CED 50(7436) BUREAU OF INDIAN STANDARDS DRAFT FOR COMMENTS ONLY (Not to be reproduced without the permission of BIS or used as an Indian Standard) 1 SCOPE Draft Indian Standard SPECIFICATION FOR FABRICATED PVC FITTINGS FOR POTABLE WATER SUPPLIES PART 6 SPECIFIC REQUIREMENTS FOR FLANGED TAIL PIECES WITH METALLIC FLANGES (Second Revision) This standard (part 6) lays down the requirements for manufacture, dimensions and marking for fabricated PVC flanged tail pieces with metallic flanges 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. Title 210:1993 Grey Iron Castings Specification (Fourth Revision) 4985:2000 Unplasticized PVC pipes for potable water supplies Specification (Third Revision) Specification for fabricated PVC fittings for potable water supplies Specification Part 1 (under revision) General requirements

4 3 REQUIREMENTS 3.1 General The general requirements for material, sizes, tests, sampling and criteria for conformity shall conform to IS ( Part 1 ). 3.2 Manufacture A typical illustration of flanged tail piece is shown in Fig Dimensions The dimensions of sockets shall comply with those given in Table 1 read with Fig. 1. The dimensions for flanged tail pieces with metallic flanges for elastomeric sealing ring joints shall comply with those given in Table 2 read with Fig. 2. NOTE - This drawing is intended to define the terms used in Table 1 and is not intended to illustrate specific design features.

5 Table 1 Dimensions of PVC Flanged Tail Piece with Metallic Flanges (Clause and Fig. 1) All dimension in millimetres. Sl No. Size Dia G Dia D Dia d Dia T Dia H No. of Holes R L Dia E Max Bolt Size ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) (7) ( 8 ) ( 9 ) ( 10 ) ( 11 ) ( 12 ) i) ii) iii) iv) v) vi) vii) viii) ix) x) xi) xii) xiii) xiv) xv) xvi) xvii) xviii) xix) M M M M M M M M M M M M M M M M M M M 27

6 NOTE - This drawing is intended to define the terms used in Table 2 and is not intended to illustrate specific design features. Fig. 2 Flanged Tail Piece with Metalic Flange for Elastomeric Sealing Ring Joint Table 2 Dimensions of Flanged Tail Piece with Metalic Flange for Elastomeric Sealing Ring Joint (Clause and Fig. 2) All dimension in millimeters Sl No. SIZE DIA G DIA D DIA d T DIA H No of Holes R L DIA E Max (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) i) , M16 ii) , M16 iii) , M16 iv) , M16 v) , M16 vi) , M16 vii) , M20 viii) , M20 ix) , M20 x) , M20 xi) , M20 xii) , M20 xiii) , M20 xiv) , M20 xv) , M24 xvi) , M24 xvii) , M24 xviii) , M24 xix) , M27 Bolt Size

7 The minimum wall thickness of fabricated tail pieces of particular pressure class shall be the same as the minimum wall thickness of the corresponding pressure class pipe as specified in IS NOTE - For 0.25 MPa pressure class, fabricated tail pieces should not be made from 0.25 MPa ( Class 1) Pressure class pipes. For this, tail piece made from 0.4 MPa (Class 2) pressure Class pipe should be used The flanged tail piece may be either plain or socketed as agreed between the manufacturer and the purchaser. In the case of socketed flanged tail piece, the socket dimensions shall comply with IS ( Part 1 ) The suitable material for metallic flanged shall be cast iron and shall be of the quality not less than that specified for Grade FG 150 of IS MARKING 4.1 Each flange tail piece with metallic flange fitting shall be marked with the following information: a) Manufacture s name or identification mark, b) The size of the flange tail piece with metallic flange and the appropriate class ( working pressure) of IS 4985 to which the pressure rating of the fitting corresponds, and c) The flange tail piece with metallic flange 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) Colour Blue Green Brown Yellow Black 4.2 BIS Certification Marking Each flanged tail piece with metallic flange may also be marked with the Standard Mark 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.