ANSI AWWA C515-2015 Reduced-Wall Resilient-Seated Gate Valves for Water Supply Service.pdf

1、AWWA Standard SM Reduced-Wall, Resilient- Seated Gate Valves for Water Supply Service Effective date: Feb. 1, 2016. First edition approved by AWWA Board of Directors Jan. 24, 1999. This edition approved June 7, 2015. Approved by American National Standards Institute Oct. 30, 2015. ANSI/AWWA C515-15

2、(Revision of ANSI/AWWA C515-09) 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 engineeri

3、ng and administrative 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 d

4、oes not constitute 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 author

5、ity. 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 be placed on the first page of the Official Notice section of Journal A

6、merican Water Works 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 concerne

7、d 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 ap - proved the standard or not, from m

8、anufacturing, 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 American National Standard

9、 are encour - aged 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

10、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 publication. Purcha

11、sers 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; or emailing infoansi.org. ISBN-13, print: 978-1-62576-137-8 eISBN-13, electronic:

12、 978-1-61300-363-3DOI: http:/dx.doi.org/10.12999/AWWA.C515.15 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 e

13、xcerpts or quotations 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. Unauthori

14、zed distribution, 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 AWWA Standards C515 Subcommittee

15、 that reviewed this standard had the following person- nel at the time of approval: Thomas J. Mettler, Chair M.H. Burns, One Bolt Inc., Denver, Colo. (AWWA) L.W. Fleury Jr., Mueller Group, Smithfield, R.I. (AWWA) S. Flora, M&H Valve Company, Anniston, Ala. (AWWA) J.J. Gemin, AECOM, Kitchener, Ont.,

16、Canada (AWWA) T.C. Harbour, Clow Valve Company, Oskaloosa, Iowa (AWWA) T.R. Ingalls,* EJ USA Inc., East Jordan, Mich. (AWWA) R.L. Larkin, American Flow Control, Birmingham, Ala. (AWWA) R. Looney, American AVK Company, Minden, Nev. (AWWA) T.J. Mettler, Waterous Company, South St. Paul, Minn. (AWWA) K

17、.J. Wright, EJ USA Inc., East Jordan, Mich. (AWWA) The AWWA 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 Robert Gardner, Vice-Chair General Interest Members J.M. Assou

18、line,* CH2M HILL, Englewood, Colo. (AWWA) M.D. Bennett, MWH, Cleveland, Ohio (AWWA) D. Dieffenbach, Carollo, Phoenix, Ariz. (AWWA) J.J. Gemin, AECOM, Kitchener, Ont., Canada (AWWA) J. Hebenstreit, Underwriters Laboratories, Northbrook, Ill. (AWWA) M.C. Johnson, Utah State University Water Research L

19、aboratory, Logan, Utah (AWWA) S.M. Passarelli, Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) T.R. Volz, AECOM, Denver, Colo. (AWWA) M.P. Yoke, Anniston, Fla. (AWWA) * Alternate Liaison, nonvoting Copyright 2016 American Water Works Association. All Rights Reserved. iv Producer Members J.V.

20、Ballun, Val-Matic Valve & Manufacturing Corporation, Elmhurst, Ill. (AWWA) J. Bolender, J and S Valves, Huffman, Texas (AWWA) D.E. Burczynski,* Kennedy Valve, Elmira, N.Y. (AWWA) L.W. Fleury Jr., Mueller Group, Smithfield, R.I. (AWWA) T.C. Harbour, Clow Valve Company, Oskaloosa, Iowa (AWWA) T.R. Ing

21、alls,* East Jordan Iron Works Inc., East Jordan, Mich. (AWWA) R.L. Larkin,* J and S Valves, Gardendale, 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. Wilbe

22、r,* American AVK, Littleton, Colo. (AWWA) K.J. Wright, EJ USA Inc., East Jordan, Mich. (AWWA) User 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

23、Water District, Fort Worth, Texas (AWWA) K.S. Jeng-Bulloch, City of Houston, Houston, Texas (AWWA) 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,

24、City of Aurora Water Department, Aurora, Colo. (AWWA) P.J. Ries, Denver Water Department, Denver, 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 var

25、iations 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 Chlorine and Chloramine Degradation of Elastomers . ix III Use of This Standard ix III.A Purchaser Opti

26、ons and Alternatives ix III.B Modification to Standard . xi IV Major Revisions xi V Comments . xi Standard 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

27、.4 Detailed Design 11 4.5 Fabrication 22 5 Verification 5.1 Testing 22 5.2 Plant Inspection and Rejection 24 6 Delivery 6.1 Marking 25 6.2 Preparation for Shipment. 25 6.3 Affidavit of Compliance 25 Appendix A Installation, Operation, and Maintenance of Reduced- Wall, Resilient-Seated Gate Valves A.

28、1 General . 27 A.2 Unloading . 27 A.3 Receiving Inspection . 27 A.4 Storage 28 A.5 Installation 28 A.6 Maintenance . 31 A.7 Repairs 32 Tables 1 Design Torque . 11 2 Minimum Waterway Sizes 12 Copyright 2016 American Water Works Association. All Rights Reserved. vi 3 Minimum Thickness of Body and Bonn

29、et . 12 4 Minimum Thickness for Ductile-Iron Connecting End Flanges . 13 5 Excess Flange Thickness . 14 6 Stem, 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 Handwhee

30、ls 20 10 Gear Ratios . 21 11 Proof-of-Design Torque . 23 SEC. PAGE SEC. PAGE Copyright 2016 American Water Works Association. All Rights Reserved. vii Foreword This foreword is for information only and is not a part of ANSI*/AWWA C515. I. Introduction. I.A. Background. This standard describes reduce

31、d-wall, resilient-seated gate valves with nonrising stems (NRS) and outside screw-and-yoke (OS&Y) rising stems, including tapping gate valves, for water supply service. The standard applies to water supply service having a pH range of 6.5 to 8.5 and a temperature from 33 to 125F (0.6 to 52C). I.B. H

32、istory. The first edition of ANSI/AWWA C509, Resilient-Seated Gate Valves, was published in 1980. ANSI/AWWA C509 includes body and bonnet parts 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 1

33、952 as ANSI/ AWWA C500 but had its roots going back to the first AWWA standard for gate valves adopted June 24, 1913. In 1993, the AWWA Standards Committee on Gate Valves and Swing Check Valves received authorization from the AWWA Standards Council to prepare a stan- dard covering reduced-wall, resi

34、lient-seated gate valves. Just as other recent AWWA standards have been developed as a result of the attendant strength of ductile iron (for pressure pipe and compact fittings), this standard results from its application for gate valves. The Manufacturers Standardization Society of the Valves and Fi

35、ttings 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. ANSI/AWWA C515-09 was approved by the AWWA Board of Directors on Jan. 2

36、5, 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 NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for

37、direct and indirect drinking water additives. Other members of the original consortium included the Water Research Foundation (formerly AwwaRF) * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. NSF International, 789 North Dixboro Road, Ann Arbor, MI 481

38、05. Water Research Foundation, 6666 West Quincy Avenue, Denver, CO 80235. Copyright 2016 American Water Works Association. All Rights Reserved. viii and the Conference of State Health and Environmental Managers (COSHEM). The American Water Works Association (AWWA) and the Association of State Drinki

39、ng 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 stringent than those required by the state. To evaluate the health ef

40、fects 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. 2. Specific policies of the state or local agency. 3. Two s

41、tandards 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, including AWWA standards, Food Chemicals Codex, Water Chemicals Codex, and other standards considered ap

42、propriate 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 to accept or accredit certification organizations within their jurisdictions. Accreditation of certi

43、- 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 contaminant for substances not regulated by a USEPA final maximum contaminant level (MCL). The MALs of a

44、n 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 certifier. ANSI/AWWA C515 does not address additives requirements. U

45、sers 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 status of certifications by parties offering to certify products for contact with, or treatment of, drink

46、ing water. 3. Determine current information on product certification. * Persons outside the United States should contact the appropriate authority having jurisdiction. Both publications are available from National Academy of Sciences, 500 Fifth Street, NW, Washington, DC 20001. Copyright 2016 Americ

47、an Water Works Association. All Rights Reserved. ix In an alternative approach to inadvertent drinking water additives, some jurisdictions (including California, Maryland, Vermont, and Louisiana at the time of this writing) are calling for reduced lead limits for materials in contact with potable wa

48、ter. Various third-party certifiers have been assessing products against these lead content criteria, and a new ANSI-approved national standard, NSF/ANSI 372, Drinking Water System Com- ponentsLead Content, was published in 2010. On Jan. 4, 2011, legislation was signed revising the definition for “l

49、ead free” within the Safe Drinking Water Act (SDWA) as it pertains to “pipe, pipe fittings, plumbing fittings, and fixtures.” The changes went into effect on Jan. 4, 2014. In brief, the new provisions to the SDWA require that these prod- ucts 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 where there is a possibility that elastomers will be in conta