1、 AWWA Standard SM Dry-Barrel Fire Hydrants Effective date: Aug. 1, 2014. First edition approved by AWWA Board of Directors June 24, 1913. This edition approved June 8, 2014. Approved by American National Standards Institute April 4, 2014. ANSI/AWWA C502-14 (Revision of ANSI/AWWA C502-05) Copyright 2
2、014 American Water Works Association. All Rights Reserved. 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
3、contained in specifications. The AWWA standards 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 pub- lication of a standard does not constitute endorsement of any produ
4、ct or product type, nor does AWWA test, certify, or approve any product. The use of AWWA standards is entirely voluntary. This standard does not supersede or take precedence over or displace any applicable law, regulation, or codes of any governmental authority. AWWA standards are intended to repres
5、ent 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 be placed on the first page of the Official Notice section of Journal - American Water Works Association. The act
6、ion becomes effective on the first day of the month following the month of Journal - American Water Works Association publication of the official notice. American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An Am
7、erican 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 ap - proved the standard or not, from manufacturing, marketing, purchasing, o
8、r 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 American National Standard are encour - aged to state on their o
9、wn responsibility in advertising and promotional materials or on tags or labels that the goods are produced in conformity with particular American National Standards. Caution n oti Ce : The American National Standards Institute (ANSI) approval date on the front cover of this standard indicates compl
10、etion 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 ANSI approval. Purchasers of American National Standards
11、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, or emailing infoansi.org. ISBN-13, print: 978-1-62576-024-1 eISBN-13, electronic: 978-1-61300-283-4DOI: http:/dx.do
12、i.org/10.12999/AWWA.C502.14 All rights reserved. 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 p
13、urposes, without the written permission of the publisher. Copyright 2014 by American Water Works Association Printed in USA hours of work by your fellow water professionals. Revenue from the sales of this AWWA material supports ongoing product development. Unauthorized distribution, either electroni
14、c or photocopied, is illegal and hinders AWWAs mission to support the water community. This AWWA content is the product of thousands of Copyright 2014 American Water Works Association. All Rights Reserved. iii Committee Personnel The AWWA Subcommittee for Revision of C502, Dry-Barrel Fire Hydrants,
15、which developed this revision, had the following personnel at the time: Theodore C. Harbour, Chair T. M. Alcott, Waterous Company, South St. Paul, Minn. (AWWA) P. Berken, American Flow Control, Beaumont, Texas (AWWA) D.E. Burczynski, Kennedy Valve, Elmira, N.Y. (AWWA) G. Chambers, Sigelock Systems L
16、LC, East Rockaway, N.Y. (AWWA) L.W. Fleury, Mueller Group, Chattanooga, Tenn. (AWWA) T.C. Harbour, Clow Valve Company, Oskaloosa, Iowa (AWWA) K. Huelsman, Clow Valve Company, Oskaloosa, Iowa (AWWA) K.S. Jeng-Bulloch, City of Houston, Houston, Texas (AWWA) K. Johnson, M&H Valve Company, Anniston, Ala
17、. (AWWA) R.L. Larkin, Gardendale, Ala. (AWWA) R. Looney, American AVK Company, Minden, Nev. (AWWA) D. Matthews, Kochek Co. Inc., Putnam, Conn. (AWWA) J. Maun, Insurance Services Office Inc., Jersey City, N.J. (AWWA) T.J. Mettler, Waterous Company, South St. Paul, Minn. (AWWA) S.D. Osborne, OSD LLC,
18、Lexington, Mass. (AWWA) D.B. Scott, American Flow Control, Birmingham, Ala. (AWWA) J.H. Wilber, American AVK Company, Littleton, Colo. (AWWA) D. Woollums, Mueller Group, Chattanooga, Tenn. (AWWA) K. Wright, EJ USA Inc., East Jordan, Mich. (AWWA) S. Ziobro, FM Approvals, Chepachet, R.I. (FM) Th e AWW
19、A Standards Committee on Fire Hydrants, which reviewed and approved this standard, had the following personnel at the time of approval: Sean D. Osborne, Chair General Interest Members E.E. Arasmith, ACR Publications Inc., Albany, Ore. (AWWA) D.M. Flancher,* Standards Engineer Liaison, AWWA, Denver,
20、Colo. (AWWA) * Liaison, nonvoting Copyright 2014 American Water Works Association. All Rights Reserved. iv R. Horner,* Standards Council Liaison, Water Management Inc., Alexandria, Va. (AWWA) R.L. Larkin, Gardendale, Ala. (AWWA) G.E. Laverick, Underwriters Laboratories Inc., Northbrook, Ill. (UL) J.
21、 Maun, Insurance Services Office Inc., Jersey City, N.J. (AWWA) S.D. Osborne, OSD, LLC, Lexington, Mass. (AWWA) M.D. Tennebaum, Underwriters Laboratories Inc., Los Angeles Calif. (AWWA) M.P. Yoke, Anniston, Ala. (AWWA) S. Ziobro, FM Approvals, Chepachet, R.I. (FMRC) Producer Members T.M. Alcott, Wat
22、erous Company, South St. Paul, Minn. (AWWA) D.E. Burczynski, Kennedy Valve, Elmira, N.Y. (AWWA) L.W. Fleury, Mueller Group, Chattanooga, Tenn. (AWWA) T.C. Harbour, Clow Valve Company, Oskaloosa, Iowa (AWWA) T.R. Ingalls, EJ USA Inc., East Jordan, Mich. (AWWA) R. Looney, American AVK Company, Minden,
23、 Nev. (AWWA) T. J. Mettler, Waterous Company, South St. Paul, Minn. (AWWA) J.H. Wilber, American AVK Company, Littleton, Colo. (AWWA) K.J. Wright, EJ USA Inc., East Jordan, Mich. (AWWA) User Members E.L. Hernandez, Denver Water, Denver, Colo. (AWWA) K.S. Jeng-Bulloch, City of Houston, Houston, Texas
24、 (AWWA) B. Kellsey, EPCOR Water Services Inc., Edmonton, Alta., Canada (AWWA) J.W. Kingsbury, Fairfax Water, Fairfax, Va. (AWWA) D.W. Qualls, City of Dallas Water Utilities Department, Dallas, Texas (AWWA) B.A. Shelton, Montgomery Water Works and Sanitary Sewer Board, Montgomery, Ala. (AWWA) M.K. St
25、ankovich, City of Haverhill, Haverhill, Mass. (AWWA) L.G. Thomas, East Bay Municipal Utilities District, Oakland, Calif. (AWWA) * Liaison, nonvoting Copyright 2014 American Water Works Association. All Rights Reserved. v Contents All AWWA standards follow the general format indicated subsequently. S
26、ome variations from this format may be found in a particular standard. SEC. PAGE SEC. PAGE Foreword I Introduction vii I.A Background . vii I.B History vii I.C Acceptance vii II Special Issues viii II.A Ownership, Use, and Maintenance viii II.B Advisory Information on Product Application . ix III Us
27、e of This Standard ix III.A Purchaser Options and Alternatives ix III.B Optional Information x III.C Modification to Standard . xi IV Major Revisions xi V Comments xii Standard 1 General 1.1 Scope 1 1.2 Purpose . 1 1.3 Application 1 2 References 2 3 Definitions . 4 4 Requirements 4.1 Permeation 5 4.
28、2 Data to Be Provided by the Purchaser. 5 4.3 Data to Be Provided by the Manufacturer 5 4.4 Materials . 6 4.5 General Design . 8 4.6 Detailed Design 10 4.7 Hydrant Inlet 13 4.8 Valves 14 4.9 Packing Glands and Packing-Gland Bolts 15 4.10 Seals 15 4.11 Bolts and Nuts 16 4.12 Workmanship . 16 4.13 Pai
29、nting 16 5 Verification 5.1 Production Testing 17 5.2 Prototype Testing 18 5.3 Inspection and Nonconformance 19 6 Delivery 6.1 Marking 19 6.2 Shipment . 19 6.3 Affidavit of Compliance 19 Appendixes A Characteristics of National Standard Fire-Hose Coupling Screw Thread. 21 Copyright 2014 American Wat
30、er Works Association. All Rights Reserved. vi B Uniform Color Scheme for Fire Hydrants . 27 Figures A.1 Form of Thread of American National Fire Hose Connection Screw Thread, NH 24 A.2 Nominal Dimensions of Connections 25 Tables 1 Copper Alloy Standards 7 2 Hydrant Component Parts 9 3 Minimum Wall T
31、hicknesses 10 4 Dimensions of Poured Joints . 13 5 Maximum Permissible Loss of Head for Hydrants 18 A.1 Nominal Dimensions of NH Threads 22 A.2 Basic Dimensions of NH Threads 23 Copyright 2014 American Water Works Association. All Rights Reserved. vii Foreword This foreword is for information only a
32、nd is not a part of ANSI * /AWWA C502. I. Introduction. I.A. Background. This standard covers dry-barrel fire hydrants that are intended for use in water supply systems in all climates, including those where freezing temperatures occur. Wet-barrel fire hydrants, which are intended for use only in ar
33、eas where the climate is mild and freezing temperatures do not occur, are covered in ANSI/ AWWA C503, Wet-Barrel Fire Hydrants. I.B. History. The fir st edition of this standard was approved on June 24, 1913, as Standard Specifications for Hydrants and Valves. Subsequent revisions to ANSI/ AWWA C502
34、 were approved by the AWWA Board of Directors in 1916, 1937, 1938, 1940, 1943, 1953, 1964, 1973, 1980, 1985, 1994, and 2005. This edition of C502 was approved on June 8, 2014. I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a con
35、sortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for direct and indirect drinking water additives. Other members of the original consortium included the Water Research Foundation (formerly AwwaRF) and the Conference of State Heal
36、th and Environmental Managers (COSHEM). The American Water 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 contact with, drinking water rests with individual states. Local ag
37、encies may choose to impose requirements more stringent 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,
38、Office of Drinking Water, discontinued on Apr. 7, 1990. 2. Specific policies of the state or local agency. * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Persons outside the United States should contact the appropriate authority having jurisdiction. C
39、opyright 2014 American Water Works Association. All Rights Reserved. viii 3. Two standards developed under the direction of NSF International (NSF), NSF * /ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, and NSF/ ANSI 61, Drinking Water System ComponentsHealth Effects. 4. Other references
40、, including AWWA standards, Food Chemicals 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 accor- dance with NSF/ANSI 61. Individual states or local agencies have auth
41、ority to accept or accredit certification organizations within their jurisdictions. Accreditation of certi- fication 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
42、a contaminant for substances not regulated 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
43、always be identical, depending on the certifier. ANSI/AWWA C502 does not address additives requirements. Users of this stan- dard should consult the appropriate state or local agency having jurisdiction in order to 1. Determine additives requirements, including applicable standards. 2. Determine the
44、 status of certifications by parties offering to certify products for contact with, or treatment of, drinking water. 3. Determine current information on product certification. II. Special Issues. II.A. Ownership, Use, and Maintenance. A fire hydrant is usually a unit of a water utilitys property tha
45、t is provided for public fire-protection service. However, during fire emergencies it is operated by members of the fire department rather than by water utility personnel. The use of fire hydrants as a source of water for street cleaning, construction proj - ects, or any purpose other than firefight
46、ing is beyond the primary purpose for which the unit is installed. The use of hydrants in this manner should be rigidly restricted and controlled in the interest of maintaining the equipment in satisfactory working condi- tion for use at times of fire emergencies. * NSF International, 789 N. Dixboro
47、 Road, Ann Arbor, MI 48105. Both publications available from National Academy of Sciences, 500 Fifth Street, NW, Washington, DC 20001. Copyright 2014 American Water Works Association. All Rights Reserved. ix The water utility, unless expressly relieved by the fire department in accordance with a wri
48、tten agreement, public ordinance, or other ownership, should schedule regu- lar and sufficiently frequent inspections of hydrants to ensure they are in good working condition. AWWA Manual M17, Installation, Field Testing, and Maintenance of Fire Hydrants, provides an excellent guide for owners of fi
49、re hydrants. II.B. Advisory Information on Product Application. Hydrants produced according to ANSI/AWWA C502 are designed to be operated by one person using a 15-in. (380-mm) wrench. The use of a longer wrench or an indefinite extender operated by two or more persons is not considered to be good practice. If one person cannot open and close a fire hydrant with a 15-in. (380-mm) wrench, the hydrant is not in proper working order and should be promptly repaired. Wrenches for fire hydrants should be constructed so that the openings can be readily rever
