欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ANSI AWWA C510-2017 Double Check-Valve Backflow Prevention Assembly.pdf

    • 资源ID:434060       资源大小:930.58KB        全文页数:28页
    • 资源格式: PDF        下载积分:5000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要5000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ANSI AWWA C510-2017 Double Check-Valve Backflow Prevention Assembly.pdf

    1、AWWA Standard SM Double Check-Valve Backflow Prevention Assembly Effective date: Sept. 1, 2017. First edition approved by AWWA Board of Directors Jan. 27, 1969. This edition approved Jan. 14, 2017. Approved by American National Standards Institute Jan. 24, 2017. ANSI/AWWA C510-17 (Revision of ANSI/A

    2、WWA C510-07) Copyright 2017 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 administrati

    3、ve 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 constitute

    4、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 standards

    5、 are intended to represent a consensus of the water industry that the product described will provide satisfactory ser- vice. 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 Asso

    6、ciation. 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 scope and pro

    7、visions. 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 standard or not, from manufacturing, marketing, pu

    8、rchasing, or using products, processes, or proce - dures not conforming to the standard. American National Standards are subject to periodic review, and users are cau- tioned to obtain the latest editions. Producers of goods made in conformity with an American National Standard are encouraged to sta

    9、te 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 standard in

    10、dicates 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 American National

    11、 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. hours of work by your fellow water professionals. Revenue from the sales of this

    12、 AWWA material supports ongoing product development. Unauthorized 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 ISBN-13, print: 978-1-62576-253-5 eISBN-13, electronic: 978-1-61300-

    13、440-1 DOI: http:/dx.doi.org/10.12999/AWWA/C510.17 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 q

    14、uotations for review purposes, without the written permission of the publisher. Copyright 2017 by American Water Works Association Printed in USAiii Committee Personnel The AWWA Standards Committee on Backflow Preventers, which reviewed and approved this standard, had the following personnel at the

    15、time of approval: John F. Graham, Chair General Interest Members S.F. Asay, Backflow Prevention Institute IAPMO, Westminster, Colo. (AWWA) S. Cleary,* IAPMO/BPI, Scranton, Pa. (AWWA) D.M. Flancher, Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) S.J. Garner, CaliforniaNevada Section, West Sac

    16、ramento, Calif. (AWWA) S. Gould, Atkins Global, Austin, Texas (AWWA) B.R. Hardin, Hardin & Associates Consulting LLC, Irving, Texas (AWWA) K.J. Kelly, Kevin Kelly PE PC, Pine Bush, N.Y. (AWWA) F.E. Kenney Jr., New England Water Works Association, Medway, Mass. (NEWWA) D.S. Schwartz, Standards Counci

    17、l Liaison, City of Waynesboro, Waynesboro, Va. (AWWA) P.H. Schwartz, University of Southern California, FCCCHR, Los Angeles, Calif. (AWWA) R.C. Williams, United States Public Health Service, Norcross, Ga. (CDC) Producer Members C. Corral, Zurn Industries LLC, Paso Robles, Calif. (AWWA) L.W. Fleury J

    18、r., Mueller Group, Chattanooga, Tenn. (AWWA) J. Hawkins, Watts Water Technologies Inc., North Andover, Mass. (AWWA) J.F. Higdon, Apollo Vales/Conbraco Industries Inc., Matthews, N.C. (AWWA) A. Kobliner, A.R.I. Flow Control Solutions, Kibbutz Kfar Haruv, Israel (AWWA) H. Ohren,* Apollo Valves/Conbrac

    19、o Industries Inc., Matthews, N.C. (AWWA) S. Perry,* Watts Water Technologies Inc., Woodland, Calif. (AWWA) L.J. Ruffin, L.J. Ruffin & Associates, Orlando, Fla. (AWWA) User Members J. Alston, Bozeman Water Department, Bozeman, Mont. (AWWA) R.A. Coates, 300 Engineering Group, Bloomfield, Conn. (AWWA)

    20、* Alternate Liaison, nonvoting Copyright 2017 American Water Works Association. All Rights Reserved. iv T.M. Dolan, Tualatin Valley Water District, Beaverton, Ore. (AWWA) J.F. Graham, California Water Service Company, Chico, Calif. (AWWA) S.Y. Tung, City of Houston, Houston, Texas (AWWA) Copyright 2

    21、017 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 Introduction vii I.A Background . vii I.B History vii I.C

    22、Acceptance . viii II Special Issues. . ix II.A Original Equipment Manufacturer (OEM) Parts ix II.B Chlorine and Chloramine Degradation of Elastomers x III Use of This Standard . x III.A Purchaser Options and Alternatives . x III.B Modification to Standard . xi IV Major Revisions xi V Comments . xi S

    23、tandard 1 General 1.1 Scope 1 1.2 Purpose . 1 1.3 Application 2 2 References 2 3 Definitions . 3 4 Requirements 4.1 Materials . 4 4.2 General Design . 6 4.3 Detailed Design 7 4.4 Workmanship . 10 5 Verification 5.1 Testing and Uniformity . 11 6 Delivery 6.1 Marking 11 6.2 Preparation for Shipment. 1

    24、1 6.3 Affidavit of Compliance 12 Tables 1 Parameters for Double Check-Valve Backflow Prevention Assembly . 7 2 Thermal Test Minimum Flow Rates . 9 Copyright 2017 American Water Works Association. All Rights Reserved. This page intentionally blank.vii Foreword This foreword is for information only an

    25、d is not a part of ANSI*/AWWA C510. I. Introduction. I.A. Background. The production and preservation of safe potable water are the objectives of greatest priority for public water utilities and other agencies having jurisdiction. When safe water has been produced and put into the public distributio

    26、n system, precautions must be taken to be certain that it is not contaminated with water or liquids from other sources. Most water-using premises may have actual or potential cross-connection hazards. The water distribution systems of some premises served by public water systems, such as hotels, hos

    27、pitals, and industrial plants, can be quite complex. On these premises, contaminated backflow into the public system can be a result of backpressure or back- siphonage from appliances and equipment or from cross-connection with other supply sources. Cross-connection control programs usually require

    28、that backflow prevention assemblies be installed at the water service connections to premises where potentially hazardous conditions exist. Water users (utility customers) have a clearly implied responsibility to protect the safety of water in the public supply system. Water users must also protect

    29、the integrity of the water supply on their own premises. Protection of a buildings piping system must be done in accordance with the requirements of the local authority having jurisdiction. Cross-connections vary widely in degree of hazard. Generally, the degree of protec- tion against backflow resu

    30、lting from a cross-connection should be commensurate with the degree of hazard. Two types of backflow prevention assemblies are commonly used: the double check-valve assembly and the reduced-pressure principle assembly. If local regulations or ordinances do not specify the type to use or the conditi

    31、ons under which one or the other may be used, recommendations may be found in AWWA Manual M14, Backflow Prevention and Cross-Connection Control: Recommended Practices. I.B. History. The Conference of State Sanitary Engineers (CSSE) and the American Water Works Association (AWWA) appointed the Joint

    32、Committee on Backflow Preventers and Cross-Connection Control in September 1959 to carry out the recommendations of an earlier joint committee. These recommendations were * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Copyright 2017 American Water Wor

    33、ks Association. All Rights Reserved. viii included in the joint committees final report published in the December 1958 edition of Journal AWWA. The first work of the committee resulted in the first edition of AWWA Manual M14, which was published in the April 1966 edition of Journal AWWA. After publi

    34、cation of AWWA Manual M14, the committee produced a standard that received final approval from the AWWA Board of Directors on Jan. 27, 1969, and was designated as AWWA C506-69, Backflow Prevention DevicesReduced Pressure Prin- ciple and Double Check Valve Types. Revision of ANSI/AWWA C506 was approv

    35、ed in 1978. The 1978 edition was subsequently reaffirmed without revision in 1983. In 1989, ANSI/AWWA C506-78 was separated into two standards: ANSI/ AWWA C510 covers the double check-valve backflow prevention assembly, and ANSI/AWWA C511 covers the reduced-pressure principle backflow prevention ass

    36、embly. The second revision to ANSI/AWWA C510 was approved by the AWWA Board of Directors on June 15, 1997. The third edition was approved June 24, 2007. This edition was approved on Jan. 14, 2017. I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative

    37、 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 original consortium included the Water Research Foundation (formerly AwwaRF) and the Con

    38、ference of State Health 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 in contact with, drinking water rests with ind

    39、ividual states.* Local agencies 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. Specific policies of the st

    40、ate or local agency. 2. 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. * Persons outside the United States should contact the appropriate authority having jurisdictio

    41、n. NSF International, 789 North Dixboro Road, Ann Arbor, MI 48105. American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Copyright 2017 American Water Works Association. All Rights Reserved. ix 3. Other references, including AWWA standards, Food Chemicals Code

    42、x, 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 to accept or accredit certification orga

    43、nizations 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 contaminant for substances not regulated by

    44、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 certifie

    45、r. ANSI/AWWA C510 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 offeri

    46、ng to certify products for contact with, or treatment of, drinking water. 3. Determine current information on product certification. In an alternative approach to inadvertent drinking water additives, some jurisdic- tions are calling for reduced lead limits for materials in contact with potable wate

    47、r. 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 ComponentsLead Content, was published in 2010. On Jan. 4, 2011, legislation was signed revising the definition for “lead

    48、free” with the Safe Drinking Water Act (SDWA) as it pertains to “pipe, pipe fittings, plumbing fittings, and fix- tures.” The changes went into effect Jan. 4, 2014. In brief, the new provisions to the SDWA require that these products meet a weighted average lead content of not more than 0.25 percent

    49、. II. Special Issues. II.A. Original Equipment Manufacturer (OEM) Parts. Parts installed during servicing and repair shall be provided by the original equipment manufacturer (OEM) * Both publications available from National Academy of Sciences, 500 Fifth Street, NW, Washington, DC 20001. Copyright 2017 American Water Works Association. All Rights Reserved. x and be identical to those provided in the assembly when originally approved. In particular, resilient parts such as check-valve discs or facing rings, O-rings, and seals fabricated from different


    注意事项

    本文(ANSI AWWA C510-2017 Double Check-Valve Backflow Prevention Assembly.pdf)为本站会员(arrownail386)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开