ASME B16.24-2006 pdf free download.Cast Copper Alloy PipeFlanges and Flanged Fittings Classes 150,300,600,900,1500, and 2500.
1.1 General
This Standard covers cast copper alloy threaded-joint pipe flanges and blind pipe flanges having rating class designations 150, 300, 600, coo, 1500, and 2500. This Standard also covers hanged fittings having rating class designations 151) and 3.00 It establishes requirements for
(a) pressure-temperature ratings
(b) size and method of designating openings for reduced fittings
(c) markings
(d) materials
(e) dimensions
(f) bolting and gaskets
(g) tolerances
(h) tvsts
This Standard also provides dimensional requirements for flanged ends of valves conforming to MSS Sl’-80.
1.2 onventlon
For the purpese of determining conformance with this Standard, the convention for fixing significant digits where limits (maximum and minimum values) are spedfled shall 1w rounded off as defined in ASThI E 29, This requires that an observed or calculated value shall be rounded off to the nearest unit in the last right-band digit used for expressing the limit. Decimal values and tolerances do not imply a particular method of measurenwnt.
1.3 Relevant Units
This Standard states values in both SI (metric) and US. Customary units. As an exception. diameters of bolts and flange bolt holes are expressed in Customary units nrdy These systems of Units are to be regarded separately as the standard. Within the text, the Customary units are shown in parentheses or in separate tables. (Tables showing dimensions in equivalent Customary units are found in Mandatory Appendix I.) The values stated in each system are not exact equivalents: therefore. it is required that each system of units he used indtpendently of the other. Except for the diameter of bolts and flange bolt holes, combining values from the two systems constitutes nonconformance with the standard,
1.4 References
Codes, standards, and specifications. containing provisions to the extent referenced herein, constitute requirements of this Standard. These reference documents are listed in Mandatory Appendis 11.
1.5 QualIty Systems
Guidelines relating to the product manufacturer’s quality system programs are described in Nonmandatory Appendix A.
1.6 Service Conditions
Criteria for selection of material suitable for particular fluid service are not within the scope of this Standard.
1.7 User Accountability
This Standard cites duties and responsibilities that are to be assumed by the flange or flange fitting user in the following areas:
(a) application
(it) installation
(c) system hydrostatic testing
(d) operation
(e) material selection
1.8 Time of Purchase, Manufacture, or Installation
The pres..ure-temperature ratings in this Standard an! applicable upon it publication to .ill flanges and flanged fittings within its scope that otherwise meet its requirements. For unused flanges or flanged fittings maintained in inventor the manufacturer of the flanges or flanged fittings may certify conformance to this edition, provided that it can be demonstrated that all requirements of this edition have been met. Where such components were intalled in accordance with the pressure-temperature ratings of an earlier edition of this Standard. those ratings are applicable except as may be governed by the applicable code or regulation.
1.9 Denotation
(c) Pressure ratings at temperatures intermediate tothose tabulated may be obtained by linear interpolation.(d) Linear interpolation of pressure ratings betweenclass designations is not permitted.
2.2 Flanged Joints
A flanged joint is composed of separate and indepen-dent, although interrelated, components.The flanges,the gasket, and the bolting are assembled by anotherinfluence- the assembler. Proper controls must be exer-cised in the selection and application for all these ele-ments to attain a joint that has acceptable leak tightness.Special techniques (e.g., controlled bolt tightening) aredescribed in ASME PCC-1.
2.3 Ratings of Flanged Joints
Ratings in this Standard apply to flanged joints thatconform to the requirements on bolting in paras. 5.4 and8.1, on gaskets in paras.5.5 and 8.2, and flanged joaintsthat are made up in accordance with good practice foralignment and assembly. Use of the ratings for flangedjoints not conforming to these requirements is the soleresponsibility of the user. Requirements for alignmentand assembly of joints and consideration of leakage dueto forces and moments developed in the connected pip-ing or equipment are not covered in this Standard. Ifthe two flanges in a flanged joint do not have the samepressure-temperature ratings, the rating of the joint atany temperature is the lower of the two flange ratingsat that temperature.