1、 Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-The American Society of Mechanical Engineers AN AMERICAN NATIONAL STANDARD CASTMON THREADED DRAINAEE FITTINGS ASME B1 6.1 2-1 HM8 (Revision Of ASME B1
2、 6.1 2-1 991) Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-Date of Issuance: February 19, 1999 The 1998 edition of this Standard is being issued with an automatic addenda subscription service. The
3、 use of addenda allows revisions made in response to public review comments or committee actions to be published on a regular yearly basis; revisions published in addenda will become effective 6 months after the Date of Issuance of the addenda. The next edition of this Standard is scheduled for publ
4、ication nn 2003. ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. The interpretations will be included with the above addenda service. ASME is the registered trademark of The American Society of Mechanical Engineers. This code or standard was
5、 developed under procedures accredited as meeting the criteria for American National Standards. The !;tandards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or stan
6、dard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. ASME does not “approve,“ “rate,“ or “endorse“ any item, construction, proprietary device, or activity. ASME does not t
7、ake any position with respect to the validity of any patent rights asserted in connection with any items mentionetl in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable Letters Patent, nor assumes any such liability. User
8、s of a code 01- standard are expressly advised that determination of the validity of any such patent rights, acid the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interp
9、reted as government or industry endorsement of this code or standard. ASME accepts responsibilityfor onlythose interpretations issued in accordance with governing ASME procedures and policies which precludes the issuance of interpretations by individual volunteers. No part of this document may be re
10、produced in any form, in an electrclnic retrieval system or otherwise, without the prior written permission of the publisher. The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright O 1999 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved P
11、rinted in U.S.A. Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-STD-ASME BLb=LZ-ENGL 1998 E 0759670 Ob15617 6LY Bll FOREWORD (This Foreword is not part of ASME 816.12-1998.) Screw joint drainage fit
12、tings were developed in about 1880 by the Durham House Drainage Company of New York and are often referred to as Durham fittings. At that time, soil pipes and drains in New York had been required to be of plumbers cast iron soil pipe, whereas Chicagos soil pipes were required to be of lead or plumbe
13、rs cast iron pipe. To form a continuous passageway with no pockets or obstructions where foreign matter could collect and gradually accumulate, it was necessary to design a special type of screw fitting. Inside diameters of the fittings are about the nominal size of standard weight wrought steel pip
14、e (Schedule 40). The thread chamber is designed so that when the pipe is tightly screwed into the fitting, its end nearly abuts the shoulder of the fitting, thereby making a practically continuous passage. The threading of these fittings required special care, and the threads on the pipe were cut to
15、 suit the threads in the fitting. With the passage of time, manufacturers practices began to diverge in regard to center- to-end dimensions and other features. The Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) studied the situation, developed a standard practice for
16、these fittings, and published MSS SP-8, Cast Iron Drainage Fittings, in 1929. Subsequently, for better coordination with other screwed fitting standards under the jurisdiction of Sectional Committee BI6 of the American Standards Association (ASA), now the American National Standards Institute (ANSI)
17、 the subject was assigned to Subcommittee 2 of B16. Many drafts of the proposed standard werc developed, and printers proofs were distributed to industry for criticism and comment in May 1940. A revised proposal dated July 1941 was submitted to the members of the Sectional Committee for letter ball
18、ot vote. Following its approval by that body, it was submitted to the sponsors and to ASA with recommendations for approval as an American Standard. This was granted in February 1942, with the designation ASA B 16.12- 1942. The MSS Ferrous Screw Fittings Committee made a thorough study of the 1942 s
19、tandard and recornmendcd that several changes be made to bring the data in line with current production and usage of this type of fitting. To comply with the recommendations, Subcommittee 2 of Sectional Committee B16 revised portions of the text and illustrations and added dimensional tables for Tuc
20、ker connections, roof connections, and Tucker Y- branches, as well as dimensions for P-traps, bath traps, and running traps. A draft, dated September 1952, was presented to the Sectional Committee for letter ballot vote. After the committee and other sponsor organizations approved the draft, it was
21、presented to ASA, and approval or ASA B 16.12-1953 was granted on September 1 I, 1953. Subcommittee 2 reviewed the document from 1963 to 1964. The Sectional Committee approved several minor changes in format and wording, changing the title to Cast Iron Threaded Drainage Fittings. ASA B 16.12- 1965 w
22、as approved on November 12, 1965. In 1970, further review was initiated by Subcommittee 2, now an ANSI Committee, and ANSI B 16.12-197 I was granted approval on November I, 197 I. The standard was updated, and metric (SI) dimensions were added in ANSI B16.12- 1977, approved on February 4, 1977. . 11
23、1 Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-STD.ASME BLbmlZ-ENGL 1998 0759b70 ObL5bLB 550 m In 1982, American Standards Committee B16 was reorganized as ASME Standards Committee B16 under proce
24、dures accredited by ANSI. Also in 1982, Subcommittee B (formerly 2) updated reference standards, and the revision was approved on July 20, 1983 as ANSI B 16.12-1983. This edition and later editions are issued on a subscription service addenda basis, which permits revisions made in response to public
25、 review comments or Committee actions to be published as necessary. Addenda revisions become effective six months after the date of issuance of the addenda. In the 1991 edition of ASME B 16.12, reference standards were updated and the metric dimensions were deleted. The edition was approved by ASME
26、and by ANSI on January 4, 1991. In the 1998 edition of ASME B16.12, reference standards are updated, a quality system program annex is added, and several editorial revisions are made. Following approval by ASME BI6 Subcommittee B and the B16 Main Committee, ANSI approved this American National Stand
27、ard on November 20, 1998. All requests for interpretations or suggestions for revisions should be sent to the Secretary, B16 Committee, The American Society of Mechanical Engineers, Three Park Avenue, New York, NY 10016-5990. Copyright ASME International Provided by IHS under license with ASMENot fo
28、r ResaleNo reproduction or networking permitted without license from IHS-,-ASME B16 COMMITTEE Standardization of Valves, Flanges, Fittings, Gaskets, and Valve Actuators (The following is the roster of the committee at the time of approval of this Standard.) OFFICERS W. N. McLean, Chair H. R. Sondere
29、gger. Vice Chair P. A. Reddington, Secretary COMMllTEE PERSONNEL R. W. Barnes, Anric Enterprises, Etobicoke, Ontario, Canada R. R. Brodin, Fisher Controls International, Inc Marshalltown. Iowa M. A. Clark, Nibco, Inc., Elkhart, Indiana A. Cohen, A. Cohen and Associates, Albuquerque, New Mexico C. E.
30、 Floren, Mueller Co., Decatur. Illinois D. R. Frikken, Solutia. Inc., St. Louis, Missouri R. Henrich, Minnegasco. Inc., Golden Valley, Minnesota J. C. Inch, Mueller Refrigeration Products Co., Hartsville, Tennessee G. A. Jolly. Vogt Valve Co., Louisville, Kentucky W. G. Knecht, BW/IP International,
31、Inc., Williamsport, Pennsylvania R. Koester, The William Powell Co., Cincinnati, Ohio W. N. McLean, Newco Valves, Palos Park, Illinois M. L. Nayyar, Bechtel Power Corp., Gaithersburg, Maryland P. A. Reddington, American Society of Mechanical Engineers, New York, New York R. A. Schmidt, Trinity-Ladis
32、h Co., Russellville, Arkansas H. R. Sonderegger, Grinnell Corp., Cranston, Rhode Island W. M. Stephan, Flexitallic, Inc., Mount Laurel, New Jersey T. F. Stroud, Ductile Iron Pipe Research Association, Birmingham, Alabama M. D. Wasicek, ABS Americas, Houston, Texas R. E. White, Richard E. White and A
33、ssociates, South Bend, Indiana D. A. Williams, Southern Company Services, Birmingham, Alabama L. A. Willis, The Dow Chemical Co., Freeport, Texas W. R. Worley, Union Carbide Corp., South Charleston, West Virginia SUBCOMMllTEE B - THREADED FllTlNGS (EXCEPT STEEL) H. R. Sonderegger, Chair, Grinnell Co
34、rp., Cranston, Rhode Island B. P. Feder, Secrefary, American Society of Mechanical Engineers, New York, New York K. Barron, Ward Manufacturing, Blossburg, Pennsylvania M. A. Clark, Nibco, Inc., Elkhart, Indiana A. Cohen, A. Cohen and Associates, Albuquerque, New Mexico A. A. Knapp, Canadian Copper/B
35、rass Development Association, North York, Ontario, Canada R. L. Larkin, American Darling Valve, Birmingham, Alabama P. 1. McGrath, Jr., Consultant, Birmingham, Alabama W. N. McLean, Newco Valves, Palos Park, Illinois J. K. Schultz, Conine Manufacturing Co., Inc., Tyler, Texas V Copyright ASME Intern
36、ational Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-CONTENTS . Foreword . 111 Standards Committee Roster v Scope 1 Size 1 Marking 1 Materials . 1 Dimcnsions and Tolerances 2 Threading 2 Ribs . 3 Coatings . 3 Face Bevel . 3 F
37、igures I Identification of Reducing Fittings . 1 2 Types of Fittings Tapped to Provide /4.in . Pitch . 4 Tables 1 Inspection Limits for Diameter and Width of Band . 2 2 Inspection Limits for Center-to-End Dimensions 2 3 Wall Thickness and Threaded End Dimensions . 5 4 Center-to-End Dimensions of Elb
38、ows 6 5 Dimensions of Tees. Crosses. and Y-Branches 7 6 Dimensions of Y-Branches (Reducing Sizes) . 8 7 Dimensions of 45 deg Y-Branches . 9 8 Dimensions of 45 deg Y-Branches (Reducing Sixes) 9 9 Dimensions of Couplings 10 10 Dimensions of Increasers IO 11 Dimensions of Offscts 11 12 Dimensions of Tu
39、cker Connections. Roof Connections. and Tucker Y-Branches 11 13 Dimensions of P-Traps. Bath P-Traps. and Running Traps 12 Mandatory Annex I References . 13 Nonmandatory Annexes A Quality Systcrn Program 15 B Dimensions of Welded and Seamless Steel Pipe (ASME B36.10M) 17 Copyright ASME International
40、Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-ASME B16.12-1998 CAST IRON THREADED DRAINAGE FllTlNGS 1 SCOPE 1.1 General This Standard for cast iron threaded drainage fittings (u) size and method of designating openings in redu
41、cing fittings (6) marking (c) materials (d) dimensions and tolerances (e) threading (f) ribs (R) coatings (h) face bevel 1.2 Applicability covers This Standard covers fittings intended for use in gravity drainage systems subject only to the gravity head of waste liquids at temperatures from ambient
42、to approximately 212F. The use of this Standard for pressurized waste handling systems is the responsibility of the user and is subject to the requirements of any applicable code. 1.3 Quality Systems Requirements relating to the product manufacturers quality system programs arc described in Annex A.
43、 1.4 References Standards and specifications adopted by reference in this Standard are shown in Annex I, which is part of this Standard. 2 SIZE The size of the fittings scheduled in Tables I and 2 is identified by the corresponding nominal pipe size. For reducing tees, Y-branches, or crosses, the la
44、rgest The use of the word nominul as ;L modifier of a dimension or size is intended to indicate that the stated dimension or size is used for designation. 4 4 4 X 2 Single and Double Short 90 deg Y-Branch Long 90 deg Y-Branch t 4 4 X 2 Single and Double 45 deg Y-Branch FIG. 1 IDENTIFICATION OF REDUC
45、ING FITTINGS run opening shall be given first. The straight-line sketches (Fig. 1) illustrate how the reducing fittings are read. 3 MARKING Each fitting shall be marked with the manufacturers name or trademark in accordance with the requirements of MSS Standard Practice No. SP-25. 4 MATERIALS (a) Th
46、e dimensions prescribed in this Standard (Ta- bles 3-13) are based on gray iron castings of high quality produced under regular control of chemical and physical properties by a recognized process. The manufacturer shall be prepared to certify that the product has been so produced and that its chemic
47、al and physical properties, as proved by test specimens, are equal to the requirements specified in ASTM A 126, Specifica- tion for Gray Iron Castings for Valves, Flanges, and Pipe Fittings. (b) Drainage fittings are regularly made of cast iron. At the option of the manufacturer, drainage fittings I
48、 Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-STD*ASME BLbILZ-ENGL L998 m ASME 816.12-1998 CAST IRON THREADED DRAINAGE FITTINGS TABLE 1 INSPECTION LIMITS FOR DIAMETER AND WIDTH OF BAND Nominal Pip
49、e Diameter and Width Size of Band, Minus, in. 1 /4 0.035 1 5; 0.04 2/2 0.05 2 0.04 3 0.05 4 0.06 5 0.06 6 0.07 8 0.09 may be furnished of malleable iron complying with the minimum physical requirements of ASTPII A 197, Specification for Cupola Malleable Iron. 5 DIMENSIONS AND TOLERANCES 5.1 Dimensions US. customary units are used in this Standard. Some dimensions of steel pipe from ASME B36.10M are listed
