**************** Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. Mazdoor Kisan Shakti Sangathan "The Right to Information, The Right to Live'' IS 7834-2 (1987) : injection moulded PVC socket fittings with solvent cement joints for water supplies. Part 2: Specific requirements for 45 degrees elbows [CED 50: Plastic Piping System] Jawaharlal Nehru 'Step Out From the Old to the New" aj^&vi f 7ui^s:y%K^ isb^^ni^seg :<>5&i| mT'5K^5?::5:^>^i»l K^^^iXSVCd^ Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge Bhartrhari — Nitisatakam ''Knowledge is such a treasure which cannot be stolen" ^'^^^r k BLANK PAGE ^*-^^^ PROTECTED BY COPYRIGHT UDC 621-643-413 062-2 : [ 678 743 22 : 678-027-74 ];628*1 ( First Reprint MARCH 1 993 ) IS:7834(Pari2)-1dU7 Indian Standard ( Reaffirmed 2003 ) SPECIFICATION FOR INJECTION MOULDED PVC SOCKET FITTINGS WITH SOLVENT CEMENT JOINTS FOR WATER SUPPLIES PART 2 SPECIFIC REQUIREMENTS FOR 45^ ELBOWS ( First Revision ) CO c (0 Q. < CO 1. Scope — This standard (Part 2) lays down the requirements for manufacture, dimensions, tolerances and marking for 45" elbows made of injection moulded PVC for water supplies. 2. Requirements 2.1 General — The general requirements for material, manufacture, methods of test sampling and inspection shall conform to IS : 7834 ( Part 1 )-1987 'Specification for injection moulded PVC socket fittings with solvent cement joints for water supplies: Part 1 General requirements ( first revision )'. 2.2 Manufacture 2.2.1 A typical illustration of elbow is given in Fig. 1. FIG. 1 45** Elbow 2.2.2 Laying Length — Ihe laying length Z and the tolerance thereon shall comply with those given in Table 1. 2.2.3 The inside diameter of the socket and the socket length shall comply with those given in IS: 7834 ( Part 1 )-1987. 3. Marking — Each elbow fitting shall be marked with the following information; a) Manufacturer's name or identification mark, and b) Size of the fitting and the appropriate class ( working pressure ) to which the pressure rating of the fitting corresponds. 3.1 Standard Mark — Details available with the Bureau of Indian Standards. Adopted 25 November 1987 June 1988, BIS Gr 1 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 IS : 7834 ( Part 2 ) - 19t7 TABLE 1 DIMENSIONS FOR LAYING LENGTHS OF 45* ELBOWS (C/a(/se 2.2.2; and Fig. 1 ) Size mm 16 20 25 32 40 SO 63 75 90 110 125 140 160 180 200 225 250 280 315 4S« Elbow Lnylng Length, Z mm 4-5 ±1 5±1 6+ 1*2 - 1 7 5 + 1-6 - 1 9»5 + 2 - 1 1VS + 2 5 - 1 14 + 3*2 - 1 16-5 + 4 - 1 19-5 + 5 - 1 23-5 + 6 - 1 27 + 6 - 1 30+7 - 1 34 + 8 - 1 38 + 8 - 1 43 + 9 - 1 48 + 10 - 1 53+11 - 1 60 + 12 - 1 67 + 13 - 1 EXPLANATORY NOTE The requirements of injection moulded PVC socket fittings are covered in eight parts. The other parts are as follows: Part 1 General requirements Part 3 Specific requirements for W elbows Part 4 Specific requirements for 90° tees Part 5 Specific requirements for 45** tees Part 6 Specific requirements for soclcets Part 7 Specific requirements for unions Part 8 Specific requirements for caps This standard was first published in 1975 and covered sizes of fittings up to 160 mm. The present revision has been taken up to cover additional sizes of fittings up to 315 mm. Printed at Dee Kay Printers. New Delhi, India