1、AWWA Standard SM Air Valve and Vent Inflow Preventer Assemblies for Potable Water Distribution System and Storage Facilities Effective date: Nov. 1, 2015. First edition approved: June 7, 2015. Approved by American National Standards Institute: Aug. 16, 2015. ANSI/AWWA C514-15 (First Edition) Copyrig
2、ht 2015 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 normal
3、ly 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 pr
4、oduct 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 are intended to repr
5、esent 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 a
6、ction 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
7、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, marketing, purchasing,
8、 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 - aged to state on their
9、 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 indicates com
10、pletion 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 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: 978-1-62576-120-0 eISBN-13, electronic: 978-1-61300-350-3DOI: http:/dx.doi.
12、org/10.12999/AWWA.C514.15 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 quotations for review pur
13、poses, 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 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 2015 American Water Works Association. All Rights Reserved.iii Committee Personnel The AWWA Subcommittee for the development of C514, Air Valve and Vent Inf
15、low Preventer As- semblies for Potable Water Distribution System and Storage Facilities, had the following personnel at the time: John V. Ballun, Chair J.V. Ballun, Val-Matic Valve & Manufacturing Corporation, Elmhurst, Ill. (AWWA) F.H. Hanson, Albert A. Webb Associates, Riverside, Calif. (AWWA) B.J
16、. Lewis, Crispin Multiplex Manufacturing Company, Berwick, Pa. (AWWA) D.L. McPherson, HDR Engineering Inc., Charlotte, N.C. (AWWA) W.J. Nicholl, GA Industries, LLC, Cranberry Township, Pa. (AWWA) J.H. Wilber, American AVK, Littleton, Colo. (AWWA) N. Zloczower, A.R.I. Flow Control Accessories, Israel
17、 (AWWA) The AWWA Standards Committee on Air Valves, which approved this standard, had the following personnel at the time of approval: Miles E. Wollam, Chair General Interest Members A. Ali, ADA Consulting Ltd., Surrey, B.C., Canada (AWWA) J.H. Bambei Jr., Bambei Engineering Services, Arvada, Colo.
18、(AWWA) D.E. Barr, ms consultants inc., Columbus, Ohio (AWWA) J.J. Cusack Jr., Bryant Associates, Braintree, Mass. (AWWA) R. DiLorenzo, Mundelein, Ill. (AWWA) D.M. Flancher,* Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) R.G. Fuller, HDR Engineering Inc., Denver, Colo. (AWWA) F.H. Hanson, Al
19、bert A. Webb Associates, Riverside, Calif. (AWWA) D.L. McPherson, HDR Engineering Inc., Charlotte, N.C. (AWWA) W.L. Meinholz, AB&H, A Donohue Group, Chicago, Ill. (AWWA) J.W. Snead II, JQ Infrastructure, Dallas, Texas (AWWA) T.J. Stolinski Jr., Black & Veatch Corporation, Kansas City, Mo. (AWWA) * L
20、iaison, nonvoting Alternate Copyright 2015 American Water Works Association. All Rights Reserved.iv M. Stuhr,* Standards Council Liaison, Portland Water Bureau, Portland, Ore. (AWWA) R.J. Wahanik, Worley Parsons, Reading, Pa. (AWWA) R.A. Ward, Tighe & Bond, Westfield, Mass. (AWWA) M.E. Wollam, MWH G
21、lobal Inc., Pasadena, Calif. (AWWA) Producer Members D. Alexander, Cla-Val Company, Costa Mesa, Calif. (AWWA) J.V. Ballun, Val-Matic Valve & Manufacturing Corporation, Elmhurst, Ill. (AWWA) L. Larson, DeZURICK-APCO-Hilton, Sartell, Minn. (AWWA) B.J. Lewis, Crispin Multiplex Manufacturing Company, Be
22、rwick, Pa. (AWWA) W.J. Nicholl, GA Industries, LLC, Cranberry Township, Pa. (AWWA) T. OShea, DeZURICK-APCO-Hilton, Schaumberg, Ill. (AWWA) J. Radtke, Valve Tech Sales, Mountain Top, Pa. (AWWA) D.K. Sorensen, A.R.I. Flow Control Accessories, South Jordan, Utah (AWWA) J.H. Wilber, American AVK, Little
23、ton, Colo. (AWWA) N. Zloczower, A.R.I. Flow Control Accessories, Israel (AWWA) User Members L. Aguiar, Miami Dade Water and Sewer Department, Miami, Fla. (AWWA) N.E. Gronlund, East Bay Municipal Utility, Oakland, Calif. (AWWA) M. MacConnell, Metro Vancouver, Burnaby, B.C., Canada (AWWA) P. Ries, Den
24、ver Water Department, Denver, Colo. (AWWA) B.C. Shade, WaterOne, Lenexa, Kan. (AWWA) * Liaison, nonvoting Alternate Copyright 2015 American Water Works Association. All Rights Reserved.v Contents All AWWA standards follow the general format indicated subsequently. Some variations from this format ma
25、y 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 . viii II Special Issues ix II.A Advisory Information on Product Application . ix II.B Field Testing . ix II.C Vacuum Protection . ix II.D Sizing . ix III Use of T
26、his Standard ix III.A Purchaser Options and Alternatives ix III.B Modification to Standard x IV Major Revisions . x V Comments x 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 Data to Be Provided by Manufacturer or Supplier . 5 4.
27、2 Materials . 5 4.3 General Design and Detailed Design Requirements 7 4.4 Welding and Fabrication . 10 4.5 Workmanship and Painting . 11 5 Verification 5.1 Testing 11 5.2 Inspection . 13 5.3 Rejection . 13 6 Delivery 6.1 Marking 13 6.2 Preparation for Shipment. 13 6.3 Affidavit of Compliance 13 Appe
28、ndix A Installation, Operation, and Maintenance of Inflow Preventer Assemblies A.1 General . 15 A.2 Unloading . 15 A.3 Storage 15 A.4 Inspection Prior to Installation 15 A.5 Installation 16 A.6 Field Testing 16 A.7 Owners Records . 17 A.8 Operation 17 A.9 Maintenance . 17 Copyright 2015 American Wat
29、er Works Association. All Rights Reserved.vi Figure 1 Inflow Preventer With Redundant Chambers 9 Tables 1 Required Flow Capacities 8 2 Inflow Preventer Flow-Test Size Categories . 12 SEC. PAGE SEC. PAGE Copyright 2015 American Water Works Association. All Rights Reserved.vii Foreword This foreword i
30、s for information only and is not a part of ANSI*/AWWA C514. I. Introduction. I.A. Background. This standard describes air valve and vent inflow preventer assemblies, which are cross-connection assemblies piped to the outlet of air valves and vents to prevent the entry of contaminated water into the
31、 potable water distribution system or storage facilities during flooded conditions. Under normal conditions, the inflow preventer allows air flow in and out of air valves and vents, but when the assembly is submerged, redundant float-operated closure mechanisms automatically close to prevent the ent
32、ry of contaminated water into the potable water distribution system or storage facilities. The production and preservation of safe, potable water are the objectives of greatest priority for public water utilities and other agencies having jurisdiction over potable water systems. When potable water h
33、as been produced and put into the water distribu- tion system or storage facilities, precautions must be taken to be certain the potable water is not contaminated. While cross-connection control programs usually require that backflow prevention assemblies be installed at the water service connection
34、s to premises where potentially contaminated water conditions exist, inflow preventer assemblies may be needed within the potable water distribution system or at the stor- age facilities to protect the potable water distribution system and storage facilities from contamination. Recommendations for s
35、pecifying the type and use of cross-connection assemblies may be found in AWWA Manual M14, Backflow Prevention and Cross- Connection Control: Recommended Practices. I.B. History. The A WWA Standards Committee on Air Valves was authorized in September 2012, in response to a request for a standard on
36、inflow preventer assemblies for potable water distribution systems and storage facilities. In 2014, the AWWA Standards Committee on Air Valves began work on a new standard for the assembly to be congruent with American Society of Sanitary Engineering Standard ASSE 1063- 08, which is used in the plum
37、bing industry. This first edition of this standard, AWWA/ ANSI C514, was approved by the AWWA Board of Directors on June 7, 2015. * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Copyright 2015 American Water Works Association. All Rights Reserved.viii
38、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 direct and indirect drinking water additives. Other
39、 members of the original consortium included the Water Research Foundation (formerly AwwaRF) and the Conference 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 Uni
40、ted 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 effects of products and drinking water additives from such
41、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 standards developed under the direction of NSF: NSF/ANSI 6
42、0, 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 appropriate by the state or local agency. Various certifica
43、tion 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- fication organizations may vary from jurisdiction to ju
44、risdiction. 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 an unspecified list of “unregulated contaminants” are base
45、d on toxicity testing guidelines (noncarcinogens) and risk characterization methodology (carcinogens). Use of Annex A procedures may not always be identical, depending on the certifier. * NSF International, 789 North Dixboro Road, Ann Arbor, MI 48105. Persons outside the United States should contact
46、 the appropriate authority having jurisdiction. Both publications available from National Academy of Sciences, 500 Fifth Street, NW, Washington, DC 20001. Copyright 2015 American Water Works Association. All Rights Reserved.ix AWWA/ANSI C514 does not address product certifications. Thus, users of th
47、is standard should consult the appropriate state or local agency having jurisdiction in order to 1. Determine the status and accreditation of certification organizations offer- ing to certify products of this type in the applicable jurisdiction. 2. Determine current information on product certificat
48、ions to this or related standards. II. Special Issues. II.A. Advisory Information on Product Application. For additional guidance regarding the use of the inflow preventer, see AWWA Manual M51, Air-Release, Air/ Vacuum, and Combination Air Valves. II.B. Field Testing. Because of the importance of cr
49、oss-connection issues, regular field testing by a certified professional is recommended in the appendix of this standard. II.C. Vacuum Protection. Air valves are sometimes required to relieve a vacuum in a liquid piping system to protect the appurtenant equipment. During flooded conditions, the inflow preventer assembly will be closed and will not provide vacuum protection. Similarly, a submerged air valve without an inflow preventer will also not provide vacuum protection. If vacuum protection is required to protect the associated pipe from collapse, a
