C511-17 Reduced-Pressure Principle Backflow Prevention ...

1 AWWA StandardSM Reduced-Pressure Principle Backflow Prevention AssemblyEffective date: Sept. 1, edition approved by AWWA Board of Directors June 23, edition approved Jan. 14, by American National Standards Institute Jan. 24, WA C511-17 (Revision of ANSI/AWWA C511-07)Copyright 2016 American Water Works Association. All Rights Reserved. iiAWWA StandardThis 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 contained in specifications. The AWWA standards usually contain options that must be evaluated by the user of the standard.

2 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 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 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 Association.

3 The action becomes effective on the first day of the month following the month of Journal American Water Works Association publication of the official National StandardAn American National Standard implies a consensus of those substantially concerned 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 approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or proce-dures not conforming to the standard.

4 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 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 notiCe: The American National Standards Institute (ANSI) approval date on the front 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.

5 Purchasers 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; ; or emailing of work by your fellow water from the sales of this AWWA material supportsongoing product development. Unauthorized distribution,either electronic or photocopied, is illegal and hindersAWWA s mission to support the water community. This AWWA content is the product of thousands ofISBN-13, print: 978-1-62576-254-2 eISBN-13, electronic: 978-1-61300-441-8 DOI: 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 purposes, without the written permission of the 2017 by American Water Works AssociationPrinted in USAiiiCommittee PersonnelThe AWWA Standards Committee on Backflow Preventers, which reviewed and approved this standard, had the following personnel at the time of approval:John F.

6 Graham, ChairGeneral Interest Asay, Backflow Prevention Institute IAPMO, Westminster, Colo. (AWWA)S. Cleary,* IAPMO/ASSE, Scranton, Pa.(AWWA) Flancher, Standards Engineers Liaison, AWWA, Denver, Colo.(AWWA) Garner, California Nevada Section, West Sacramento, Calif.(AWWA)S. Gould, Atkins Global, Austin, Texas(AWWA) Hardin, Hardin & Associates Consulting LLC, Irving, Texas(AWWA) Kelly, Kevin Kelly PE PC, Pine Bush, (AWWA) Kenney Jr., New England Water Works Association, Medway, Mass.(NEWWA) Schwartz, Standards Council Liaison, City of Waynesboro, Waynesboro, Va.(AWWA) Schwartz, University of Southern California, Los Angeles, Calif.(AWWA) Williams, United States Public Health Service, Norcross, Ga.

7 (CDC)Producer MembersC. Corral, Zurn Industries LLC, Paso Robles, Calif.(AWWA) Fleury Jr., Mueller Group, Smithfield, (AWWA)J. Hawkins, Watts Water Technologies Inc., North Andover, Mass.(AWWA) Higdon, Apollo Valves/Conbraco Industries Inc., Pageland, (AWWA)A. Kobliner, Flow Control Solutions, Kibbutz Kfar Haruv, Israel(AWWA)H. Ohren,* Apollo Valves/Conbraco Industries Inc., Matthews, (AWWA)S. Perry,* Watts Water Technologies Inc., Woodland, Calif.(AWWA) Ruffin, Ruffin & Associates, Orlando, Fla.(AWWA)User Coates, 300 Engineering Group, Bloomfield, Conn. (AWWA) Dolan, Tualatin Valley Water District, Beaverton, Ore.(AWWA)*Alternate Liaison, nonvotingCopyright 2016 American Water Works Association.

8 All Rights Reserved. Graham, California Water Service Company, Chico, Calif. (AWWA) Pawluk, Metro Vancouver, Vancouver, Canada (AWWA) Tung, City of Houston, Houston, Texas (AWWA)Copyright 2016 American Water Works Association. All Rights Reserved. vContentsAll AWWA standards follow the general format indicated subsequently. Some variations from this format may be found in a particular PAGE SEC. PAGEF orewordI Introduction .. Background .. History .. Acceptance .. viiiII Special Issues .. Original Equipment Manufacturer(OEM) Parts .. Chlorine and ChloramineDegradation of Elastomers .. xIII Use of This Standard.

9 Purchaser Options andAlternatives .. Modification to Standard .. xiIV Major Revisions .. xiV Comments .. xiStandard1 Scope .. Purpose .. Application .. 22 References .. 23 Definitions .. 34 Materials .. General Design .. Detailed Design .. Work ma nsh ip .. 125 Testing and Uniformity .. 126 Mark ing .. Preparation for Affidavit of Compliance .. 13 Tables1 Parameters for Reduced-Pressure Principle Backflow Prevention Assembly .. 62 pressure Differential Relief Valve Discharge Rates .. 103 Thermal Test Minimum Flow Rates .. 11 Copyright 2016 American Water Works Association.

10 All Rights Reserved.