1、AWWA Standard SM Resilient-Seated Gate Valves for Water Supply Service Effective date: Feb. 1, 2016. First edition approved by AWWA Board of Directors Jan. 28, 1980. This edition approved June 7, 2015. Approved by American National Standards Institute Oct. 30, 2015. ANSI/AWWA C509-15 (Revision of AN
2、SI/AWWA C509-09) Copyright 2016 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 administ
3、rative information normally 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 constit
4、ute endorsement of any product 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 code of any governmental authority. AWWA stand
5、ards 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 be placed on the first page of the Official Notice section of Journal American Water W
6、orks Association. The action 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 scop
7、e 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 ap - proved the standard or not, from manufacturing, m
8、arketing, 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 American National Standard are encour - a
9、ged 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 n oti Ce : The American National Standards Institute (ANSI) approval date on the front cover of this s
10、tandard 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 publication. Purchasers of America
11、n 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; or emailing infoansi.org. ISBN-13, print: 978-1-62576-136-1 eISBN-13, electronic: 978-1-61300-36
12、2-6DOI: http:/dx.doi.org/10.12999/AWWA.C509.15 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 quot
13、ations for review purposes, without the written permission of the publisher. Copyright 2015 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 distributio
14、n, either electronic or photocopied, is illegal and hinders AWWAs mission to support the water community. This AWWA content is the product of thousands of Copyright 2016 American Water Works Association. All Rights Reserved. iii Committee Personnel The C509 Subcommittee, which developed this standar
15、d, had the following personnel at that time: T. Chad Harbour, Chair L.R. Dunn, U.S. Pipe & Foundry Company, Birmingham, Ala. (AWWA) L.W. Fleury Jr., Mueller Group, Smithfield, R.I. (AWWA) T.C. Harbour, Clow Valve Company, Oskaloosa, Iowa (AWWA) T.R. Ingalls,* EJ, USA Inc., East Jordan, Mich. (AWWA)
16、R.L. Larkin, J and S Valve, Birmingham, Ala. (AWWA) R. Looney, American AVK Company, Minden, Nev. (AWWA) N.O. Mejia, L.A. Department of Water and Power, Los Angeles, Calif. (AWWA) T.J. Mettler, Waterous Company, South St. Paul, Minn. (AWWA) K.J. Wright, EJ, USA Inc., East Jordan, Mich. (AWWA) The AW
17、WA Standards Committee on Gate Valves and Swing Check Valves, which reviewed and approved this standard, had the following personnel at the time of approval: Joseph J. Gemin, Chair General Interest Members J.M. Assouline, CH2M HILL, Englewood, Colo. (AWWA) M.D. Bennett, MWH, Cleveland, Ohio (AWWA) D
18、. Dieffenbach, Carollo, Phoenix, Ariz. (AWWA) J.J. Gemin, AECOM, Kitchener, Ont., Canada (AWWA) J. Hebensreit, Underwriters Laboratories Inc., Northbrook, Ill. (UL) M.C. Johnson, Utah State University Water Research Laboratory, Logan, Utah (AWWA) S.M. Passarelli, Standards Engineer Liaison, AWWA, De
19、nver, Colo. (AWWA) T.R. Volz, AECOM, Denver, Colo. (AWWA) M.P. Yoke, Anniston, Ala. (AWWA) * Alternate Liaison, nonvoting Copyright 2016 American Water Works Association. All Rights Reserved. iv Producer Members J.V. Ballun, Val-Matic Valve & Manufacturing Corporation, Elmhurst, Ill. (AWWA) J. Bolen
20、der, J and S Valves, Huffman, Texas (AWWA) D.E. Burczynski,* Kennedy Valve, Elmira, N.Y. (AWWA) L.W. Fleury Jr., 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.L. Larkin,* J and S Valve, Garde
21、ndale, Ala. (AWWA) R. Looney, American AVK Company, Minden, Nev. (AWWA) T.J. Mettler, Waterous Company, South St. Paul, Minn. (AWWA) D.B. Scott,* American Flow Control, Birmingham, Ala. (AWWA) J.H. Wilber,* American AVK, Littleton, Colo. (AWWA) K.J. Wright, EJ, USA Inc., East Jordan, Mich. (AWWA) Us
22、er Members R.L. Gardner, Standards Council Liaison, Wannacomet Water Company, Nantucket, Mass. (AWWA) B. Hasanabadi, Colorado Springs Utilities, Colorado Springs, Colo. (AWWA) S. Hattan, Tarrant Regional Water District, Fort Worth, Texas (AWWA) K.S. Jeng-Bulloch, City of Houston, Houston, Texas (AWW
23、A) M. MacConnell, Metro Vancouver, Burnaby, B.C., Canada (AWWA) J.S. Olson, Front Range Standard Committee, Littleton, Colo. (AWWA) A. Quiniones, US Bureau of Reclamation, Denver, Colo. (AWWA) D. Rausch, City of Aurora Water Department, Aurora, Colo. (AWWA) P.J. Ries, Denver Water Department, Denver
24、, Colo. (AWWA) * Alternate Liaison, nonvoting Copyright 2016 American Water Works Association. All Rights Reserved. v Contents All AWWA standards follow the general format indicated subsequently. Some variations from this format may be found in a particular standard. SEC. PAGE SEC. PAGE Foreword I I
25、ntroduction vii I.A Background . vii I.B History vii I.C Acceptance vii II Special Issues ix II.A Chlorine and Chloramine Degradation of Elastomers . ix III Use of This Standard ix III.A Purchaser Options and Alternatives ix III.B Modification to Standard . xi IV Major Revisions xi V Comments . xi S
26、tandard 1 General 1.1 Scope 1 1.2 Purpose . 2 1.3 Application 2 2 References 2 3 Definitions . 5 4 Requirements 4.1 Data to Be Supplied by the Manufacturer 6 4.2 Materials . 7 4.3 General Design . 10 4.4 Detailed Design 11 4.5 Fabrication 22 5 Verification 5.1 Testing 22 5.2 Plant Inspection and Rej
27、ection 24 6 Delivery 6.1 Marking 25 6.2 Preparation for Shipment. 25 6.3 Affidavit of Compliance 25 Appendixes A Installation, Operation, and Maintenance of Resilient-Seated Gate Valves A.1 General . 27 A.2 Unloading . 27 A.3 Receiving Inspection . 27 A.4 Storage 28 A.5 Installation 28 A.6 Maintenan
28、ce . 31 A.7 Repairs 32 Tables 1 Design Torque . 11 2 Minimum Full Waterway Sizes . 11 3 Minimum Thickness of Body and Bonnet . 12 4 Minimum Thickness for Ductile-Iron Connecting End Flanges 13 Copyright 2016 American Water Works Association. All Rights Reserved. vi 5 Excess Flange Thickness 14 6 Ste
29、m Gate, Thrust Collar, and Stem Nut Copper Alloys . 16 7 Stainless-Steel Valve Stem Alloys . 17 8 Minimum Diameter of Stem and Minimum Number of Turns to Open . 18 9 Outside Diameter of Handwheels 20 10 Gear Ratios . 21 11 Proof-of-Design Torque . 23 SEC. PAGE SEC. PAGE Copyright 2016 American Water
30、 Works Association. All Rights Reserved. vii Foreword This foreword is for information only and is not a part of ANSI*/AWWA C509. I. Introduction. I.A. Background. This standard describes resilient-seated gate valves with nonrising stems (NRS) and outside screw-and-yoke (OS&Y) rising stems, includin
31、g tapping gate valves for water supply service. The resilient-seated gate valve has been in service in various water utility applications since 1975. I.B. History. The fi rst edition of ANSI/AWWA C509, Resilient-Seated Gate Valves, was published in 1980. ANSI/AWWA C509 includes body and bonnet parts
32、 of either gray or ductile cast iron with shell-wall thicknesses equal to those of the ANSI/AWWA C500, Metal-Seated Gate Valves, which was first issued in 1952 as ANSI/AWWA C500 but had its roots going back to the first AWWA standard for gate valves adopted June 24, 1913. The Manufacturers Standardi
33、zation Society of the Valves and Fittings Industry (MSS) has played an important role in developing this standard. Founded in 1924, MSS has had official organizational representation on AWWA standards committees dealing with valve and hydrant products since 1930. The first edition of ANSI/AWWA C509
34、was approved by the AWWA Board of Directors on Jan. 28, 1980, with subsequent editions in 1987, 1994, 2001, and 2009. This edition was approved on June 7, 2015. I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by
35、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 Health and Environm
36、ental 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 c
37、hoose to impose * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. NSF International, 789 North Dixboro Road, Ann Arbor, MI 48105. Water Research Foundation, 6666 West Quincy Avenue, Denver, CO 80235. Persons outside the United States should contact the a
38、ppropriate authority having jurisdiction. Copyright 2016 American Water Works Association. All Rights Reserved. viii 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
39、use various references, including 1. An advisory program formerly administered by USEPA, Office of Drinking 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 ChemicalsHe
40、alth Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. 4. Other references, 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
41、certifying products in accor- dance with NSF/ANSI 61. Individual states or local agencies have authority to accept or accredit certification organizations within their jurisdictions. Accreditation of certi- fication organizations may vary from jurisdiction to jurisdiction. Annex A, “Toxicology Revie
42、w and Evaluation Procedures,” to NSF/ANSI 61 does not stipulate a maximum allowable level (MAL) of 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 (nonc
43、arcinogens) and risk characterization methodology (carcinogens). Use of Annex A procedures may not always be identical, depending on the certifier. ANSI/AWWA C509 does not address additives requirements. Thus, users of this standard should consult the appropriate state or local agency having jurisdi
44、ction in order to 1. Determine additives requirements including applicable standards. 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 certification. In an alternative appr
45、oach to inadvertent drinking water additives, some juris- dictions (including California, Maryland, Vermont, and Louisiana at the time of this writing) are calling for reduced lead limits for materials in contact with pota- ble water. Various third-party certifiers have been assessing products again
46、st these * Both publications are available from National Academy of Sciences, 500 Fifth Street, NW, Washington, DC 20001. Copyright 2016 American Water Works Association. All Rights Reserved. ix lead content criteria, and a new ANSI-approved national standard, NSF/ANSI 372, Drinking Water System Com
47、ponentsLead Content, was published in 2010. On Jan. 4, 2011, legislation was signed revising the definition for “lead free” within the Safe Drinking Water Act (SDWA) as it pertains to “pipe, pipe fittings, plumbing fit- tings, and fixtures.” The changes went into effect on Jan. 4, 2014. In brief, th
48、e new provisions to the SDWA require that these products meet a weighted average lead content of not more than 0.25 percent. II. Special Issues. II.A. Chlorine and Chloramine Degradation of Elastomers. The selection of materials is critical for water service and distribution piping in locations wher
49、e there is a possibility that elastomers will be in contact with chlorine or chloramines. Documented research has shown that elastomers such as gaskets, seals, valve seats, and encapsulations may be degraded when exposed to chlorine or chloramines. The impact of degradation is a function of the type of elastomeric material, chemical concentration, contact surface area, elastomer cross section, and environmental conditions as well as temperature. Careful selection of and specifications for elastomeric materials and the specifics of their appl
