NOTE- IS: · 1m TABLE 10 WELDING NECK FLANGES (Clausts alld IS. 63ft • It71 TABLE 11 PLATE FLANGES FOR WELDING. NOM SIZE, FLANGE, RAISED FACE, DRILLING, NECK. D, b, h1, d4, f, BOLT NO, NO. d2, K, d3, h2, r. , , 26, 70, , 5, M27, S2, 30, , , Phone: + Specification For Flanges. Flanges. As per B.S 10 Flanges. Welding Pressure. 10 Kgs. / cm2 equivalent. ND 10/IS: T/

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The thickness of the portion of the flange which connects it to the pipe should be not less than the pipe thickness nor more than 3 mm thicker. For alloy steel studs or bolts, nuts of a similar steel, If carbon steel is used, it shall have but of a different qrade shall be used.

The lugged version with threaded holes can be used as end of line valves or terminal end valves. Details o P conditions under which a licence for the use of the ISI Certification Mark may flwnges granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

Alloy steel flanges shall be marked with the symbols designated in Table 1. NOTE 2 – The minimum tensile strength been specified in the relevant specifications.

The valve has a fully rubber lined body and a rubber encapsulated disc with a square slot for the drive end shaft. Where there is no fanges standard the method of attachment shall be the subject of agreement between the purchaser and the manufacturer. The double offset disc design nearly eliminates the flanves wear due to the camming action of the disc during closing.

The PTFE seat liner covers the entire wetted surface of the body and extends on to the flange contact faces, thus eliminating possibility of any media contact with the body metal. API category B Pressure temperature rating: Even though the body is designed for a maximum pressure of 2. Values other steels will be included when available. IlSperification for carbon stw!


SIZE10 15 20 2. He shall be at liberty to reject any material which does not comply with the requirements of this. This general purpose soft seated Butterfly valve has a fully rubber lined single piece body with a centric disc construction and is available in wafer lugged style body pattern to ensure precise location in pipeline.

The term integralflange applies to flanges integralwith pipes, valves and2. The valve 3692 available in ‘wafer’ as well as ‘wafer lugged’ version with a host of seat and encapsulation material to cater to majority of the chemical fllanges industry requirement. The ultimate in high performance Butterfly valves, IV’s IVEX-series incorporates the ‘state of the art’ valve technology to out perform the competition.

This general purpose soft seated Butterfly valve has a fully rubber lined single piece body ks centric disc construction and is available in wafer type body pattern. Where machining is carried out it may be either flangea spot facing at the bolt holes or by back facing at the option of the manufacturer. Ilangcs the bolt holes shall be drilled off centres. API category A Valve face to face dimensions: However, a quality factor of 0.

Home Documents IS Its split body makes it easy for seal replacement during maintainance. For details reference may be made to IS: Pressure Pressure Allowable Allowable Other ratings at primary service Gmperature, ratings at any other temperature, rS II T,stress value at primary service temperaturt- stress value at any temperature, 7, properties Proper9 are given below: The valve has excellent throttling characteristics with good low flow control capability, which offers an inherently higher rangeability.

All dimckonr N–Far in millimetres.

IS – – Steel pipe flanges | QuestIn

If repairs by welding arc carried out, the castings shou! The disc flap is held in position by a stub 63922 with an axial locking arrangement provided on the top shaft. The type of protector and method of attachment shall be approved by the purchaser. The integrally moulded spherical profile seat with a matching profile on the disc shoulder both closed die moulded ensures perfect sealing with minimum operating torque and prevents any fluid ingress into the shaft bores.


These shall Abe screwed in 6 shall as agreed be prepared theto between7. Nominal SizeA continuous produced by a 3 mm radius round-nosed tool approximately 1.

Different Drilling Standards – UNP Polyvalves

The fully circular back up elastomer and live loaded disc shoulder sealing ensures bubble tight closing of the Valve with zero shaft leakage. Carbon and Carbon Matzganese Steele 1. A real workhorse from the IV stables, IVGK model Butterfly valve incorporates the optimum design features to provide long trouble free service in the field. Norm — The two types of Ranges shown arc alternatives at the option All dimensions in millimctres.

Use this table also for nominal sizes 6 to 65 mm for 1. C 70 80 80 80No.

IVR is an ideal choice for furnace air flow and combustion control applications. Post on Nov 5. The ISI Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under-a well-defined system of inspection, testing and qualit control which is devised and supervised by ISI and operated Ly the producer.

The wafer style body has universal design to fit between pipe flanges of almost all popular flange standards. All dimensions in millimetres.

WeldNeck Flanges (IS:6392,ANSI B16.5)

The top shaft sealing is through stuffing box type gland sealing arrangement, which is field adjustable. The IVR model Butterfly fflanges, offered by Intervalve India are essentially seatless Butterfly valves intended for low pressure gas lines and air lines. An adjustable gland box type shaft sealing arrangement permits on line adjustment of the packing to ensure zero leakage.