AWWA C530-2012 Pilot-Operated Control Valves.pdf

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1、 ANSI/AWWA C530-12 (Revision of ANSI/AWWA C530-07) AWWA Standard Effective date: Dec. 1, 2012. First edition approved by AWWA Board of Directors June 24, 2007. This edition approved June 10, 2012. Approved by American National Standards Institute Sept. 17, 2012. 6666 West Quincy Avenue Advocacy Denv

2、er, CO 80235-3098 Communications T 800.926.7337 Conferences www.awwa.org Education and TrainingScience and TechnologySections The Authoritative Resource on Safe WaterPilot-Operated Control Valves SM Copyright 2012 American Water Works Association. All Rights Reserved. ii AWWA Standard This document

3、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 specifi- cations. The AWWA standards usually contain options that must be eva

4、luated by the user of the standard. Until each optional feature is specified by the user, the product or service is not fully defined. AWWA publication 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 s

5、tandards is entirely voluntary. This standard does not supersede or take precedence over or displace any applicable law, regulation, or codes of any governmental authority. AWWA standards are intended to represent a consensus of the water supply industry that the product described will provide satis

6、factory 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 action becomes effective on the first day of the month following the month of Journal - Ameri

7、can 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 American National Standard is intended as a guide to aid the manufacturer, the consumer, and

8、 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 procedures not conforming to the standard. Ameri- can Nationa

9、l 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 encouraged to state on their own responsibility in advertising and promotional materials or on tags or labels that the goods

10、 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 completion of the ANSI approval process. This American National Standard may be revised or withdraw

11、n 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 ANSI approval. Purchasers of American National Standards may receive current information on all standards by calling or writ- ing the American National

12、 Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036; (212) 642-4900, or emailing infoansi.org. ISBN-13, print: 978-1-58321-905-8 eISBN-13, electronic: 978-1-61300-200-1 ISBN-10, print: 1-58321-905-6 eISBN-10, electronic: 1-61300-200-9 All rights reserved. No part of this publ

13、ication 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. Copyright 2

14、012 by American Water Works Association Printed in USA Copyright 2012 American Water Works Association. All Rights Reserved. iii Committee Personnel The AWWA Standards Committee on Pilot-Operated Control Valves, which reviewed and ap- proved this standard, had the following personnel at the time: Am

15、zad Ali, Chair Fred Fuller, Vice Chair General Interest Members A. Ali, Greater Vancouver Water District, Burnaby, B.C., Canada (AWWA) M.L. Altland, Hatch Mott Macdonald, Millburn, N.J. (AWWA) F.H. Hanson, Albert A. Webb Assoc., Riverside, Calif. (AWWA) E.M. Norum, California State University Center

16、 for Irrigation Technology, Fresno, Calif. (AWWA) T.J. McCandless,* Standards Engineer Staff Advisor, AWWA, Denver, Colo. (AWWA) D. Rhodes, Dayton at the first inaugural meeting in June 2003, a subcommittee was appointed by the chair to develop a standard. The first edition was approved by the AWWA

17、Board of Directors on June 24, 2007. This edition was approved on June 10, 2012. 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

18、 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 Conference of State Health and Environmental Managers (COSHEM). The American Water Works Association and the Associatio

19、n 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 individual states. Local agencies may choose to impose * American National Standards Institute, 25 West 43rd Street, Fourth Fl

20、oor, New York, NY 10036. Persons outside the United States should contact the appropriate authority having jurisdiction. Copyright 2012 American Water Works Association. All Rights Reserved. viii requirements more stringent than those required by the state. To evaluate the health effects of products

21、 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 standards develope

22、d under the direction of the 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 appropriate by

23、 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 jurisdiction. Accreditation of certi- fication or

24、ganizations may vary from jurisdiction to jurisdiction. Annex A, Toxicology Review and Evaluation Procedures, of 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 l

25、ist 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 C530 does not address additive requirements. Users of this stand

26、ard should consult the appropriate state or local agency having jurisdiction in order to 1. Determine additive requirements, including applicable standards. 2. Determine the status of certification by parties offering to certify products for contact with, or treatment of, drinking water. 3. Determin

27、e current information on product certification. II. Special Issues. Conditions under which the pilot-operated control valve is to be operated must be evaluated carefully by the purchaser. This evaluation must include determination of the hydraulic characteristics of the system in which the valve wil

28、l be installed and the pilot devices required for operation of the valve, including (1) maximum and static differential pressures across the valve and (2) the range of * NSF International, 789 N. Dixboro Road, Ann Arbor, MI 48113. Both publications available from National Academy of Sciences, 500 Fi

29、fth Street, NW, Washington, DC 20001. Copyright 2012 American Water Works Association. All Rights Reserved. ix flow rates through the valve under the most adverse operating conditions. Velocities exceeding 15 ft/sec (4.6 m/sec) should be discussed with the manufacturer. When selecting a type of valv

30、e, it must be noted that there are various types of control valves with different combinations of pilots and actuation mechanisms. III. Use of This Standard. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the

31、 particular application being considered. III.A. Purchaser Options and Alternatives. The following information should be provided by the purchaser. 1. Standard used, that is, the latest revision of ANSI/AWWA C530, Pilot- Operated Control Valves. 2. Whether compliance with NSF/ANSI 61, Drinking Water

32、 System ComponentsHealth Effects, is required. 3. Size of valve. 4. Quantity required. 5. Maximum nonshock inlet pressure. 6. Minimum and maximum pressure drop across the seat. 7. Maximum head loss, if required. 8. Maximum transient pressure and characteristics, if known. 9. Requirements for anticav

33、itation trim material. 10. State special devices or features, if required, including number and location of isolation valves for pilot lines, type of pilot filter element, openclose time speed con- trol requirements, position indication, remote control devices, remote and externally mounted three-po

34、sition control switches (opencloseauto), pressure gauges, and/or pressure transmitters on inlet and outlet flange taps. 11. Consideration relating to anticipated problems with rubber components exposed to line content containing chlorine, chloramines, or other chemicals. If these problems are antici

35、pated, the purchaser should identify the maximum expected concen- trations of these chemicals and other factors, such as pH and temperature ranges, that may affect the corrosivity of these chemicals. The purchaser should consult with the manufacturer and, if appropriate, specify special requirements

36、 for these components. 12. Required rate of flow for normal flow conditions and for minimum and maxi- mum flow conditions (Sec. 1.1). 13. Body style (globe, wye, or angle ) (Sec. 1.1.1). 14. Flow port area (nominal diameter or reduced port) (Sec. 3.0). 15. Certified drawings to be provided by the ma

37、nufacturer (Sec. 4.1.1). Copyright 2012 American Water Works Association. All Rights Reserved. x 16. Laying length dimension (Sec. 4.1.1.1). 17. Maximum height from valve centerline to position indicators, including on- site dismantling height requirements (Sec. 4.1.1.1). 18. Maximum space width, in

38、cluding control piping (Sec. 4.1.1.1). 19. Application and pilot type (Sec. 4.1.1.2). 20. Type of pilot-operated control valve, whether diaphragm or piston (Sec. 4.1.1.2). 21. Additional information for remote operation, such as position transmit- ters, variable pressure control pilots, limit switch

39、es, and/or other configurations (Sec. 4.1.1.2). 22. Installation, operation, and maintenance manual requirements (Sec. 4.1.3). 23. Details of other federal, state or provincial, and local requirements (Sec. 4.2.1). 24. Seat and body material (Sec. 4.2.2). 25. T ype of material for pilot lines (stain

40、less steel, copper, or other preferred mate- rial) (Sec. 4.2.2). 26. Type of end connection, flanged, groove-joint, or National Pipe Thread (NPT) (Sec. 4.3.4). 27. Body flange class (cast iron class 125 and/or class 250 in accordance with ASME B16.1 and ductile iron class 150, class 250 in accordanc

41、e with ASME B16.42, or steel class 150 or class 300 in accordance with ASME B 16.5) (Sec. 4.3.4.1). 28. Specify flange bolt hole drilling pattern class if different from a recognized ANSI pressure class (Sec. 4.3.4.1). 29. Shop inspection by the purchaser, if required (Sec. 5.1.1). 30. Requirement f

42、or an affidavit of compliance (Sec. 6.3). III.B. Laying Length. Pilot-operated control valves do not have uniform laying lengths. Interchangeability between various manufacturers may not be possible without modification to the existing piping system. The purchaser is cautioned to obtain this informa

43、tion from the manufacturers for verification prior to purchase. III.C. Performance Test. This standard does not require the manufacturer to conduct the performance test on a fully assembled valve. Sec. 5.2 allows the manufacturer to conduct the tests separately on the main valve and the related pilots. If the purchaser desires the performance test to be conducted on the fully assembled valve, this requirement should be specified in the purchase documents. Copyright 2012 American Water Works Association. All Rights Reserved.