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1、The Authoritative Resource on Safe Water AWWA Standard Advocacy Communications Conferences Education and Training ? Science and Technology Sections 6666 West Quincy Avenue Denver, CO 80235-3098 T 800.926.7337 www.awwa.org SM ANSI/AWWA C207-07 (Revision of ANSI/AWWA C207-01) Steel Pipe Flanges for Wa
2、terworks Service Sizes 4 In. Through 144 In. (100 mm Through 3,600 mm) Effective date: Sept. 1, 2007 First edition approved by AWWA Board of Directors June 17, 1955. This edition approved Jan. 21, 2007. Approved by American National Standards Institute June 20, 2007. Copyright 2007 American Water Wo
3、rks Association ii AWWA Standard This document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA standards describe minimum requirements and do not contain all of the engineering and administrative information normally contained in specifications. The AWWA stand
4、ards usually contain options that must be evaluated by the user of the standard. Until each optional feature is specified by the user, the product or service is not fully defined. AWWA publication of a standard does not constitute endorsement of any product or product type, nor does AWWA test, certi
5、fy, or approve any product. The use of AWWA standards is entirely voluntary. AWWA standards are intended to represent a consensus of the water supply industry that the product described will provide satisfactory service. When AWWA revises or withdraws this standard, an official notice of action will
6、 be placed on the first page of the classified advertising section of Journal AWWA. The action becomes effective on the first day of the month following the month of Journal AWWA publication of the official notice. American National Standard An American National Standard implies a consensus of those
7、 substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether that person has approved the sta
8、ndard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review, and users are cautioned to obtain the latest editions. Producers of goods made in conformity with an Americ
9、an National Standard are encouraged to state on their own responsibility in advertising and promotional materials or on tags or labels that the goods are produced in conformity with particular American National Standards. CAUTION NOTICE: The American National Standards Institute (ANSI) approval date
10、 on the front cover of this standard indicates completion of the ANSI approval process. This American National Standard may be revised or withdrawn at any time. ANSI procedures require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of publi
11、cation. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036; (212) 642-4900. Science and Technology AWWA unites the entire water community by
12、developing and distributing authoritative scientific and technological knowledge. Through its members, AWWA develops industry standards for products and processes that advance public health and safety. AWWA also provides quality improvement programs for water and wastewater utilities. All rights res
13、erved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information or retrieval system, except in the form of brief excerpts or quotations for review purposes, without the written permission of
14、 the publisher. Copyright 2007 by American Water Works Association Printed in USA Copyright 2007 American Water Works Association -,-,- iii Committee Personnel The Steel Water Pipe-Manufacturers Technical Advisory Committee (SWPMTAC) Task Group on updating AWWA C207, which developed this standard, h
15、ad the fol- lowing personnel at the time: Bruce Vanderploeg, Chair H.H. Bardakjian, Ameron International, Rancho Cucamonga, Calif.(AWWA) R. Borland, Dresser Inc., Bradford, Pa.(AWWA) K. Clark, Mueller Company, Decatur, Ill.(AWWA) A. Collins, JCM Industries, Nash, Texas(AWWA) M. Fite, Pacific Coast F
16、lange, Ukiah, Calif.(AWWA) Z.J. Gentile, Ford Meter Box Company Inc., Pell City, Ala.(AWWA) B.D. Keil, Continental Pipe Manufacturing Company, Pleasant Grove, Utah(AWWA) J.L. Luka, American SpiralWeld Pipe Company, Columbia, S.C.(AWWA) R.N. Satyarthi, Baker Coupling Company Inc., Los Angeles, Calif.
17、(AWWA) K.L. Shaddix, Smith-Blair Inc., Texarkana, Texas(AWWA) B. Spotts, RTLC Piping Products Inc., Kosse, Texas(AWWA) J.C. Taylor, Piping Systems Inc., Fort Worth, Texas(AWWA) M.J. Topps, Viking Johnson, Hitchin, Herts., United Kingdom(AWWA) M.A. Vanderbosch, CAB Inc., Oakwood, Ga.(AWWA) B. Vanderp
18、loeg, Northwest Pipe Company, Portland, Ore.(AWWA) D.R. Wagner, Consultant, St. Louis, Mo.(AWWA) The AWWA Standards Committee on Steel Pipe, which reviewed and approved this standard, had the following personnel at the time of approval: John H. Bambei Jr., Chair George J. Tupac, Vice-Chair Dennis De
19、chant, Secretary Copyright 2007 American Water Works Association iv General Interest Members W.R. Brunzell, Brunzell Associates Ltd., Skokie, Ill.(AWWA) R.L. Coffey, HDR Engineering Inc., Omaha, Neb.(AWWA) H.E. Dunham, MWH Inc., Bellevue, Wash.(AWWA) S.N. Foellmi, Black (2) the fact that cast valves
20、 and fittings will always have flanges of large outside diameter, which cannot be reduced because of the wall thickness of this equipment; (3) the need for interchangeability of equipment through the medium of common drilling templates; and (4) the fact that standards could be based on the successfu
21、l usage and good service records of existing installations. A survey of water utility users indicated that it was desirable to maintain the outside diameter and drilling of flanged fittings and valves given in ANSI/ AWWA C500, Gate Valves for Water and Sewage Systems, and ANSI/AWWA B16.1, Cast Iron
22、Pipe Flanges and Flanged Fittings (for classes 25, 125, 250, and 800). The committee decided to follow this practice for sizes 6 in. through 48 in. (150 mm through 1,200 mm). In its extensive deliberations, the ASME/AWWA committee had available the results of special research and testing conducted b
23、y Armco Steel Corporation, Bethlehem Steel Company, and Taylor Forge and Pipe Works. The various design methods and test results are given in “Steel Ring Flanges for Steel Pipe,” Bulletin 47-A (1947), from the American Rolling Mill Company, Middletown, Ohio. The design of flanges for waterworks serv
24、ice, with the results of the preceding report, was published in Journal AWWA in October 1950, pp. 931944. A discussion in the paper by Taylor Forge, participants in the ASME/AWWA committee, states the reasons why a waterworks flange is not an ASME/Taylor Forge flange. Concern about high secondary st
25、resses at the attachment, e.g., thick material to thin wall pipe, is covered here along with the published “Design of Wye Branches” (Journal AWWA June 1955, appendix C, pp. 581630). Tables 1 through 6 are based on historical dimensions and are presented without additional calculations. I.B.History.T
26、he report of the ASME/AWWA committee was approved in 1951, and the first edition of this standard, designated AWWA C207-52T, was published under the title “Tentative Standard Specifications For Steel Pipe Flanges” in 1952. That edition covered diameters from 6 in. to 48 in. (150 mm to 1,200 mm) and
27、pressures through 150 psi (1,034 kPa). In 1954, a committee composed of Taylor Forge, Armco, Bethlehem, and consulting engineers revised the existing standard to include diameters through 96 in. (2,400 mm) and pressures to 275 psi (1,896 kPa). This revision was published under designation AWWA C207-
28、55, Copyright 2007 American Water Works Association -,-,- xi Standard Specifications/Standard For Steel Pipe Flanges. The standard was further revised and the next edition published in 1978 as ANSI/AWWA C207, Steel Pipe Flanges For Waterworks ServiceSizes 4 In. Through 144 In. The next edition, desi
29、gnated C207 with the same title, was published in 1986 and revised the maximum test pressure to 125 percent of the flange rating, added segmentation of flanges, blind flanges, class E ring flanges, class F ring and hub flanges, and tolerances for flange draft or layback. This previous edition was ap
30、proved by the AWWA Board of Directors on June 17, 2001. This edition was approved on Jan. 21, 2007. I.C.Acceptance.In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consen
31、sus standards and a certification program for direct and indirect drinking water additives. Other members of the original consortium included the American Water Works Association Research Foundation (AwwaRF) and the Conference of State Health and Environ- mental Managers (COSHEM). The American Water
32、 Works Association (AWWA) and the Association of State Drinking Water Administrators (ASDWA) joined later. In the United States, authority to regulate products for use in, or in contact with, drinking water rests with individual states.* Local agencies may choose to impose requirements more stringen
33、t than those required by the state. To evaluate the health effects of products and drinking water additives from such products, state and local agencies may use various references, including 1.An advisory program formerly administered by USEPA, Office of Drinking Water, discontinued on Apr. 7, 1990.
34、 2.Specific policies of the state or local agency. 3.Two standards developed under the direction of NSF, NSF/ANSI60, Drinking Water Treatment ChemicalsHealth Effects, and NSF/ANSI 61, Drink- ing Water System ComponentsHealth Effects. *Persons outside the United States should contact the appropriate
35、authority having jurisdiction. NSF International, 789 N. Dixboro Road, Ann Arbor, MI 48105. American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Copyright 2007 American Water Works Association -,-,- xii 4.Other references, including AWWA standards, Food Chemi
36、cals Codex,* Water Chemicals Codex,* and other standards considered appropriate by the state or local agency. Various certification organizations may be involved in certifying products in accordance with NSF/ANSI 61. Individual states or local agencies have authority to accept or accredit certificat
37、ion organizations within their jurisdiction. Accreditation of certification organizations may vary from jurisdiction to jurisdiction. Annex A, “Toxicology Review and Evaluation Procedures,” to NSF/ANSI 61 does not stipulate a maximum allowable level (MAL) of a contaminant for substances not regulate
38、d by a USEPA final maximum contaminant level (MCL). The MALs of an unspecified list of “unregulated contaminants” are based on toxicity testing guidelines (noncarcinogens) and risk characterization methodology (carcinogens). Use of Annex A procedures may not always be identical, depending on the cer
39、tifier. ANSI/AWWA C207 does not address additives requirements. Thus, users of this standard should consult the appropriate state or local agency having jurisdiction in order to 1.Determine additives requirements, including applicable standards. 2.Determine the status of certifications by parties of
40、fering to certify products for contact with, or treatment of, drinking water. 3.Determine current information on product certification. II.Special Issues.It should be noted that thickness and dimensional design of ring and hub flanges have been based on references given in the background section of
41、this foreword, as well as industry standard and other empirical data. Thickness design of the blind flanges has been based on the ASME Code Design Method. III.Use of This Standard.It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are s
42、uitable for use in the particular application being considered. III.A.Purchaser Options and Alternatives.When purchasing steel flanges for steel water pipe, the purchaser shall specify the following: *Both publications available from National Academy of Sciences, 500 Fifth St., N.W., Washington, DC
43、20001. Copyright 2007 American Water Works Association -,-,- xiii 1.Standard usedthat is, ANSI/AWWA C207, Steel Pipe Flanges for Water- works ServiceSizes 4 In. Through 144 In. (100 mm Through 3,600 mm), of latest edition. 2.Whether compliance with NSF/ANSI 61, Drinking Water System Compo- nentsHeal
44、th Effects, is required, in addition to the requirements of the Safe Drinking Water Act. 3.Type of flanges requiredring or hub type (Sec. 1.1). 4.Details of other federal, state, or provincial, and local requirements (Sec. 4.1.1). 5.Gasketsrubber or nonasbestos (Sec. 4.1.5) and gasket thickness for
45、diameters up to and including 24 in. (610 mm). 6.Coating selection (Sec. 4.4). 7.Pressure rating required (Tables 2 through 7). 8.Class of flange required (Tables 2 through 7). 9.Inside diameter of flanges (Tables 2 through 7). III.B.Modification to Standard.Any modification to the provisions, defin
46、i- tions, or terminology in the standard must be provided by the purchaser. IV.Major Revisions.Major revisions made to the standard in this edition include the following: 1.Added Standards Council materials language (Sec. 4.1.1). 2.Added Standards Council permeation language (Sec. 4.1.2). 3.Added eq
47、uivalent stainless steel material language (Sec. 4.1.4). 4.Added alternative language for unavailable y value rubber gaskets (Sec. 4.1.5). 5.Added Sec. 4.2.2.2 on flange face condition. 6.Added new language about fillet weld sizing for flange attachment (Sec. 4.3.1). 7.Added “impression” in Sec. 6.1
48、. 8.Deleted 138 in. flange information in Tables 2 and 5. 9.Changed flange bore tolerances in Tables 2, 5, and 6. 10.Deleted flange ID (B) values for sizes 26 in. through 48 in. in Table 6. V.Comments.If you have any comments or questions about this standard, please call the AWWA Volunteer dimension
49、s: in. 25.4 = mm; psi 6.895 = kPa *Pressure rating at atmospheric temperature is 86 psi. These flanges have the same OD and drilling as class 125 cast-iron flanges (ASME B16.1). In sizes 24 in. and smaller, they also match ASME B16.5 class 150 psi drilling for steel flanges. Pressure rating at atmospheric temperature: sizes 412 in. inclusive, 175 psi; sizes larger than 12 in., 150 psi. These