Download AWWA M44-2006 Distribution Valves.pdf PDF

TitleAWWA M44-2006 Distribution Valves.pdf
TagsValve Pipe (Fluid Conveyance) Electrical Resistance And Conductance Hydraulics Hydraulic Engineering
File Size1.5 MB
Total Pages72
Document Text Contents
Page 1

Science and Technology

AWWA unites the entire water community by developing and distributing authoritative scientific and technological
knowledge. Through its members, AWWA develops industry standards for products and processes that advance public
health and safety. AWWA also provides quality improvement programs for water and wastewater utilities.

Distribution Valves: Selection,

Installation, Field Testing, and

Maintenance

AWWA MANUAL M44

Second Edition

Page 2

MANUAL OF WATER SUPPLY PRACTICES—M44, Second Edition

Distribution Valves: Selection, Installation, Field Testing,
and Maintenance

Copyright © 1996, 2006 American Water Works Association

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 purposes, without the written permission
of the publisher.

Disclaimer
The authors, contributors, editors, and publisher do not assume responsibility for the validity of the
content or any consequences of their use. In no event will AWWA be liable for direct, indirect, special,
incidental, or consequential damages arising out of the use of information presented in this book. In
particular, AWWA will not be responsible for any costs, including, but not limited to, those incurred as
a result of lost revenue. In no event shall AWWA’s liability exceed the amount paid for the purchase of
this book.

Project Manager/Technical Editor: Melissa Valentine
Production: Claro Systems
Manuals Coordinator: Beth Behner

Library of Congress Cataloging-in-Publication Data

Distribution valves :b selection, installation, field testing, and maintenance.--2nd ed.
p. cm. -- (AWWA manual M44)
Includes bibliographical references and index.
ISBN 1-58321-430-5
1. Water-pipes--Valves. 2. Water--Distribution. I. American Water Works Association.

TD491.D576 2006
628.1'44--dc22

2006042942

Printed in the United States of America
American Water Works Association
6666 West Quincy Avenue
Denver, CO 80235

ISBN 1-58321-430-5 Printed on recycled paper

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Page 36

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Page 37

27

AWWA MANUAL M44

3

Valve Tests, Unloading,
Inspection, and Storage

Most valve components are manufactured to standards set by the American Water
Works Association (AWWA) or other organizations such as the American Society of
Mechanical Engineers (ASME) and the American National Standards Institute
(ANSI). These standards typically include test requirements or testing procedures to
ensure that the valves are manufactured to specifications, and the manufacturer
must meet all such requirements and procedures. Valve inspection at the manufac-
turing facility ensures that valves meet those standards and that the valves are in
working order when they are shipped. However, valves should also be tested
operationally when they arrive at the utility and before they are installed.

MANUFACTURING PLANT VALVE TESTS _____________________
When valves are manufactured, the work is available for inspection and approval by
the purchaser’s duly authorized inspector. Notice of this requirement should be in the
purchaser’s valve specifications. In-plant inspections provide additional assurance to
the purchaser that the valves meet the requirements of the specification. For in-plant
inspections, the manufacturer provides full facilities for inspection and observation of
tests. The purchaser’s inspector should have access to all places of manufacture
where materials are being produced or fabricated or where tests are conducted. An
affidavit of compliance with the appropriate product standard may be required from
the manufacturer even if the purchaser has an inspector at the plant.

After manufacture, each valve should be subjected to operation and hydrostatic
tests (pressure tests of the valve to ensure that there is no leakage) at the
manufacturer’s plant as specified in the appropriate product standards. Testing
assures the buyer that the valve will perform properly. Tests conducted by the
manufacturer vary based on valve type and product standard. Some of those tests are
described in the following paragraphs.

Chapter

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Page 71

61

To order any of these manuals or other AWWA publications, call the Bookstore toll-free at
1-(800)-926-7337.

AWWA Manuals

M1, Principles of Water Rates, Fees,
and Charges, Fifth Edition, 2000,
#30001PA

M2, Instrumentation and Control, Third
Edition, 2001, #30002PA

M3, Safety Practices for Water Utilities,
Sixth Edition, 2002, #30003PA

M4, Water Fluoridation Principles and
Practices, Fifth Edition, 2004,
#30004PA

M5, Water Utility Management Practices,
Second Edition, 2006, #30005PA

M6, Water Meters—Selection, Installation,
Testing, and Maintenance, Second
Edition, 1999, #30006PA

M7, Problem Organisms in Water:
Identification and Treatment, Third
Edition, 2004, #30007PA

M9, Concrete Pressure Pipe, Second
Edition, 1995, #30009PA

M11, Steel Pipe—A Guide for Design and
Installation, Fifth Edition, 2004,
#30011PA

M12, Simplified Procedures for Water
Examination, Third Edition, 2002,
#30012PA

M14, Recommended Practice for Backflow
Prevention and Cross-Connection
Control, Third Edition, 2003,
#30014PA

M17, Installation, Field Testing, and
Maintenance of Fire Hydrants,
Fourth Edition, 2006, #30017PA

M19, Emergency Planning for Water
Utility Management, Fourth Edition,
2001, #30019PA

M20, Water Chlorination/Chloramination
Practices and Principles, Second
Edition, 2006, #30020PA

M21, Groundwater, Third Edition, 2003,
#30021PA

M22, Sizing Water Service Lines and
Meters, Second Edition, 2004,
#30022PA

M23, PVC Pipe—Design and Installation,
Second Edition, 2003, #30023PA

M24, Dual Water Systems, Second Edition,
1994, #30024PA

M25, Flexible-Membrane Covers and
Linings for Potable-Water Reservoirs,
Third Edition, 2000, #30025PA

M27, External Corrosion—Introduction to
Chemistry and Control, Second
Edition, 2004, #30027PA

M28, Rehabilitation of Water Mains,
Second Edition, 2001, #30028PA

M29, Water Utility Capital Financing,
Second Edition, 1998, #30029PA

M30, Precoat Filtration, Second Edition,
1995, #30030PA

M31, Distribution System Requirements for
Fire Protection, Third Edition, 1998,
#30031PA

M32, Distribution Network Analysis for
Water Utilities, Second Edition, 2005,
#30032PA

M33, Flowmeters in Water Supply, Second
Edition, 1997, #30033PA

M36, Water Audits and Leak Detection,
Second Edition, 1999, #30036PA

M37, Operational Control of Coagulation
and Filtration Processes, Second
Edition, 2000, #30037PA

M38, Electrodialysis and Electrodialysis
Reversal, First Edition, 1995,
#30038PA

M41, Ductile-Iron Pipe and Fittings,
Second Edition, 2003, #30041PA

M42, Steel Water-Storage Tanks, First
Edition, 1998, #30042PA

M44, Distribution Valves: Selection,
Installation, Field Testing, and
Maintenance, First Edition, 1996,
#30044PA

M45, Fiberglass Pipe Design, Second
Edition, 2005, #30045PA

M46, Reverse Osmosis and Nanofiltration,
First Edition, 1999, #30046PA

Page 72

62 DISTRIBUTION VALVES

To order any of these manuals or other AWWA publications, call the Bookstore toll-free at
1-(800)-926-7337.

M47, Construction Contract Administration,
First Edition, 1996, #30047PA

M48, Waterborne Pathogens, Second
Edition, 2006, #30048PA

M49, Butterfly Valves: Torque, Head Loss,
and Cavitation Analysis, First
Edition, 2001, #30049PA

M50, Water Resources Planning, First
Edition, 2001, #30050PA

M51, Air-Release, Air/Vacuum, and
Combination Air Valves, First
Edition, 2001, #30051PA

M52, Water Conservation Programs—A
Planning Manual, First Edition,
2006, #30052PA

M53, Microfiltration and Ultrafiltration
Membranes for Drinking Water, First
Edition, 2005, #30053PA

M54, Developing Rates for Small Systems,
First Edition, 2004, #30054PA

M55, PE Pipe—Design and Installation,
First Edition, 2006, #30055PA

M56, Fundamentals and Control of
Nitrification in Chloraminated
Drinking Water Distribution Systems,
First Edition, 2006, #30056PA

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