1、 AWWA Standard SM Wet-Barrel Fire Hydrants Effective date: Aug. 1, 2014. First edition approved by AWWA Board of Directors July 7, 1959. This edition approved June 8, 2014. Approved by American National Standards Institute April 4, 2014. ANSI/AWWA C503-14 (Revision of ANSI/AWWA C503-05) Copyright 20
2、14 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 c
3、ontained 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 produc
4、t 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 represe
5、nt 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 acti
6、on 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 Ame
7、rican 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, or
8、 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 ow
9、n 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 comple
10、tion 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 m
11、ay 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: 978-1-62576-025-8 eISBN-13, electronic: 978-1-61300-284-1DOI: http:/dx.doi
12、.org/10.12999/AWWA.C503.14 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 pu
13、rposes, 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 electronic
14、 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 C503, Wet-Barrel Fire Hydrants wh
15、ich developed this revision, had the following personnel at the time: Randy Looney, Chair D.E. Burczynski, Kennedy Valve, Elmira, N.Y. (AWWA) G. Chambers, Sigelock Systems LLC, East Rockaway, N.Y. (AWWA) L. W. Fleury, Mueller Group, Chattanooga, Tenn. (AWWA) T.C. Harbour, Clow Valve Company, Oskaloo
16、sa, Iowa (AWWA) K. Huelsman, Clow Valve Company, Oskaloosa, Iowa (AWWA) K.S. Jeng-Bulloch, City of Houston, Houston, Texas (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 O
17、ffice Inc., Jersey City, N.J. (AWWA) S.D. Osborne, OSD LLC, Lexington, Mass. (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. (AWWA) The A
18、WWA 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
19、, Colo. (AWWA) 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. Maun, Insurance Services Office Inc., Jersey City, N.J. (AWWA) * Liaison, nonvoting Copyrig
20、ht 2014 American Water Works Association. All Rights Reserved. iv 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. (AWWA) Producer Members T.M. Alcott,*
21、 Waterous 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, M
22、inden, 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,
23、 Texas (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
24、.K. Stankovich, City of Haverhill, Haverhill, Mass. (AWWA) L.G. Thomas, East Bay Municipal Utility District, Oakland, Calif. (AWWA) * Alternate Copyright 2014 American Water Works Association. All Rights Reserved. v Contents All AWWA standards follow the general format indicated subsequently. Some v
25、ariations 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. . ix II.A Gate Valve ix II.B Torque ix II.C Single-Outlet Nozzle. . ix II.D Head Loss ix II.E Physical and Chem
26、ical Properties . ix III Use of This Standard ix III.A Purchaser Options and Alternatives . x III.B Modification to Standard xii IV Major Revisions . xii V Comments xii Standard 1 General 1.1 Scope 1 1.2 Purpose . 1 1.3 Application 2 2 References 2 3 Definitions . 4 4 Requirements 4.1 Permeation 5 4
27、.2 Data to Be Provided by the Purchaser 5 4.3 Drawings or Data to Be Provided by the Manufacturer . 5 4.4 Materials . 6 4.5 General Design . 10 4.6 Detailed Design 10 4.7 Coating . 16 4.8 Workmanship . 16 5 Verification 5.1 Fire-Hydrant Component Tests . 17 5.2 Production Tests 17 5.3 Inspection and
28、 Nonconformance 17 6 Delivery 6.1 Marking 18 6.2 Shipment . 18 6.3 Affidavit of Compliance 18 Appendixes A Characteristics of National Standard Fire-Hose Coupling Screw Threads . 19 B Uniform Color Scheme for Fire Hydrants . 23 Tables 1 Copper Alloys . 9 Copyright 2014 American Water Works Associati
29、on. All Rights Reserved. vi 2 Minimum Wall Thickness for Sections of Wet-Barrel Hydrants . 11 3 Maximum Permissible Loss of Head for Hydrants 12 A.1 Nominal Dimensions of NH (fire-hose) Threads . 20 A.2 Basic Dimensions of NH (fire-hose) Threads . 21 Copyright 2014 American Water Works Association.
30、All Rights Reserved. vii Foreword This foreword is for information only and is not a part of ANSI*/AWWA C503. I. Introduction. I.A. Background. A fire hydrant is usually a unit of a water utilitys property that is provided for public fire-protection service. However, during fire emergencies, a hydra
31、nt is operated by members of a fire department rather than by water utility personnel. The use of a fire hydrant as a source of water for street cleaning, construction proj - ects, or any purpose other than firefighting is beyond the primary purpose for which the unit is installed. The use of hydran
32、ts 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. This standard pertains to wet-barrel fire hydrants that are intended for use in water- supply systems in areas where th
33、e climate is mild and freezing temperatures do not occur. ANSI/AWWA C502, Dry-Barrel Fire Hydrants, pertains to dry-barrel fire hydrants that are intended for use in water-supply systems, including those where freezing tem- peratures do occur. Unless expressly relieved by the fire department by writ
34、ten agreement, public ordi- nance, or other ownership, water utilities should schedule regular and frequent inspec- tions of hydrants to ensure they are in satisfactory working condition. AWWA Manual M17, Installation, Field Testing, and Maintenance of Fire Hydrants, provides an excellent guide for
35、owners of fire hydrants. I.B. History. Previous editions of ANSI/AWWA C503 were approved by the AWWA Board of Directors in January 1958 (tentative), July 1959, January 1970, June 1975, February 1982, June 1988, June 1997, and June 2005. This edition of C503 was approved June 8, 2014. I.C. Acceptance
36、. 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 consensus standards and a certification program for direct and indirect drinking water additives. Other members of the
37、original consortium included the Water Research Foundation (formerly AwwaRF) * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Copyright 2014 American Water Works Association. All Rights Reserved. viii and the Conference of State Health and Environmental
38、 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 in contact with, drinking water rests with individual states.* Local agencies may choos
39、e 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, Office of Drinki
40、ng Water, discontinued on Apr. 7, 1990. 2. Specific policies of the state or local agency. 3. Two standards developed under the direction of NSF, NSF /ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. 4. Other references, incl
41、uding 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 authority
42、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 a cont
43、aminant 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 always
44、 be identical, depending on the certifier. ANSI/AWWA C503 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. * Persons outside the
45、United States should contact the appropriate 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. Both publications available from National Academy of Sciences, 500 Fi
46、fth Street, N. W., Washington, DC 20001. Copyright 2014 American Water Works Association. All Rights Reserved. ix 2. Determine the status of certifications by parties offering to certify products for contact with, or treatment of, drinking water. 3. Determine current information on product certifica
47、tion. II. Special Issues. II.A. Gate Valve. Installing a gate valve on the branch connection of hydrants is considered good water utility practice. This practice is particularly important for wet- barrel hydrants. Dry-barrel hydrants manufactured according to ANSI/AWWA C502 are designed so that if t
48、he hydrant is damaged or broken above or near the grade level, the main valve will remain closed and reasonably tight against leakage. However, in the case of wet-barrel hydrants, a break will discharge water unless used in conjunction with a break-off style check valve. The gate valve on the branch
49、 connection enables the water to be shut off in the shortest possible time to prevent or reduce damage. II.B. Torque. Hydrants produced according to this standard shall meet a torque requirement of 200 ft-lb (270 Nm) of torque applied at the operating nut in both opening and closing directions, as required in Sec. 4.6.13. This amount of torque is considered fully adequate to operate a hydrant that is in satisfactory working condition. The use of a wrench longer than 15 in. (380 mm), or an indefinite extender operated by two or more persons, is not co
