AWWA C517-2009 Resilient-Seated Cast-Iron Eccentric Plug Valves《软密封铸铁偏心旋塞阀》.pdf

1、ANSI/AWWA C517-09 (Revision of ANSI/AWWA C517-05) American Water Works Association The Authoritative Resource on Safe Water“ Resilient-Seated Cast-Iron Eccentric Plug Valves STANDARD Effective date: March 1,2010. First edition approved by AWWA Board of Directors June 12,2005. This edition approved J

2、une 14,2009. Approved by American National Standards Institute Jan. 14, 2010. Advocacy Communications Conferences Education and Training Science and Technology Sections AWWA Standard This document is an American Water Works Association (AWWA) standard. it is not a specification. AWWA standards descr

3、ibe minimum requirements and do not contain all of the engineering and administrative information normally contained in specifi- cations. The AWWA standards usuailv contain outions that musf be evaluated bvthe user of the Standard. Until each outionai feature Is specified by the user, the product or

4、skrvice is not fully defined. AWW 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 standards IS ent!reiv voluntarv. This standard does not suoersede or take orecedence over or dlsoiace anv a

5、oulicable law reeulatlon. or . . - coocs of JP) ,g$ernmertrdl amor I) Ak.A stanoaras arc ntcnoed to represent a conscns. of tne .$am, sop y no“s;q tnat tre prca.cr descrluco v. li uro 51 sai sfa;rur, scs cz. i:oen Al!IVA re, ses Jr n ihdrat%s m s sra!c;arc. an 3Kc a1 no c= c, action will be placed o

6、n the first page of the classified advertising section of Journal AWWA. The action becomes effective on the first day of the month foilowing the month of Journal AWWA publication of the official notice. American National Standard An American National Standard implies a consensus of those substantlai

7、ly 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 ex- istence of an American National Standard does not in any respect preclude anyone, whether that person has approved the standard or n

8、ot, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming10 the standard. American Natlonai 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

9、 Standard are encouraged to state on their own responsibiilty In advertising and promotional materiais or on tags or labeis that the goods are produced in conformity with particular American National Standards. CAUTION NOTICE: The American National Standards Institute (ANSI) approval date on the fro

10、nt 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. Pur

11、chasers of American National Standards may receive current information on all standards by caiiing or writing the American Natlonal Standards Institute, 25 West 43rd Street, Fourth Floor. New Yoik, NY 10036: (212) 642-4900. Ail rights reserved. No paS of this publication may be reproduced or transmi

12、tted 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 O 2010 by American Water Works Associ

13、ation Printed in USA Committee Personnel The AWWA Standards Committee on Eccentric Plug Valves, which reviewed and approved this standard, had the following personnel at the time of approval: Fred L. Hinker, Chair Amzad Ali, Kce-Chair General Interest Members K.R. Augenbergs, HNTB Corporation, India

14、napolis, Ind. F.L. Hinker, Santa Rosa, N.M. (Am) M.B. Horsley, Black & Veatch Corporation, Kansas City, Mo. (Am) T.J. McCandless,* Standards Engineer Liaison, AWWA, Denver, Colo. (Am) W.H. Peffley, Crawford Murphy & Tilly, Springfield, Ill. (Am) B.M. Shepherd? Standards Council Liaison, Claremont, C

15、alif. (AWWA) R.B. Woodbury, ARCADIS, Toledo, Ohio (AWWA) Producer Members A. Abuellel, Henry Pratt Company, Aurora, Ill. J.V. Ballun, Val-Matic Valve & Manufacturing Corporation, Elmhurst, Ill. M.A. Bell, Victaulic, Bainbridge Island, Wash. J. Bottenfield, Clow Valve Company, Oskaloosa, Iowa P. Jana

16、gan, DeZURIK Water Controls, Sartell, Minn. User Members A. Ali, Metro Vancouver, Surrey, B.C., Canada T.M. Curry, Laurel, Md. J.L. Reddy, Kansas Water Pollutions Department, Kansas City, Mo. M.A. Sayed, Detroit Water & Sewerage Department, Detroit, Mich. T.F. Walz, Phoenix Water Services Department

17、, Phoenix, Ariz. (AWWA) (AWWA) (AWWA) (Am) (AWWA) (Am) (AWWA) (AWWA) (AWWA) (AWWA) Liaison, nonvoting iii This page intentionally blank. Contents All AWMA standards follow the general format indicated subsequently. Some variations from this fonat may be found in a particuhr standard. SEC. PAGE Forew

18、ord I Introduction vii 1.A Background vii . . 1.B History VII . . . 1.C Acceptance VII . . I1 Special Issues VIII . 1I.A General VIII SEC. PAGE 4.2 Data to Be Provided by the Manufacturer or Supplier 4 4.3 Materials 4 4.4 Design . 5 . 4.5 Workmanship and Coating 10 5 Verification . 5.1 Inspection 11

19、 1I.B Advisory Information on . . 5.2 Testing 11 . Product Application viii . . 5.3 Rejection . 13 . 111 Use of This Standard x 6 Delivery 1II.A Purchaser Options and . li 6.1 Marking 13 111, difii to standard xii 6.2 Shipping 13 IV Major Revisions xii 6.3 Affidavit of Compliance 13 . . . . V Commen

20、ts xii Appendix Standard A Installation, Operation, and 1 General Maintenance of Resilient-Seated Cast-Iron Eccentric Plug Valves “ 1.1 Scope 1 A.1 General 15 1.2 Purpose . 1 A.2 Unloading 15 . 1.3 Application 1 . A.3 Storage 15 2 References 2 A.4 Inspection Prior to Installation 16 . . 3 Definuons

21、2 A.5 Installation . 16 A.6 Testing 18 4 Requirements - A.7 Records 19 4.1 Permeation . 4 A.8 Operation 19 . A.9 Maintenance 19 SEC. PAGE SEC. PAGE Figure 2 Prototype Actuator Test Cycles . A.l Recommended Installation Required 9 Position for Suspended Solids 3 Minimum Duration of Shell and Seat Ser

22、vice 17 Tests 11 4 Valve Test Cycles Required 12 Tables 1 End-to-End Dimensions for . Flanged-End Valves 6 Foreword 7hisforeword is for information only and is not apart ofANSI/AWWA C51Z I. Introduction. I.A. Backpound. Resilient-seated cast-iron eccentric plug valves were introduced in the 1930s as

23、 a tight-sealing and wear-resistant valve for handling fluids with solids content. The valve has since grown in use for both potable and wastewater applications. I.B. History. Resilient-seated cast-iron eccentric plug valves were first standardized by the Manufacturers Standardization Society (MSS)

24、in 1991, in standard practice SP-108. The need for standardization of resilient-seated cast-iron eccentric plug valves by the American Water Works Association (AWWA) was recognized in 1995. In 1998, the AWWA Standards Council authorized the Eccentric Plug Valve Committee to develop a new standard. T

25、he first edition of C517 was approved by the AWWA Board of Directors on June 12,2005. This edition was approved on June 14, 2009. I.C. Accptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to devel

26、op voluntary third-party consensus standards and a certification program for direct and indirect drinking water additives. Other members of the original consortium included the American Water Works Association Research Foundation (AwwaRF, now Water Research Foundation) and the Conference of State He

27、alth 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 the individual states?

28、 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. An advisory program formerly administered b

29、y USEPA, Office of Drinking Water, discontinued on Apr. 7, 1990. 2. Specific policies of the state or local agency. American National Standaids Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. I Persons outside the United States should contact the appropriate authority having jurisd

30、iction. 3. Two standards developed under the direction of NSF, NSF*/ANSI 60, Drinking Water Treatment Chemicals-Health Effects, and NSFIANSI 61, Drinking Water System Components-Health Effects. 4. Other references, including AWWA standards, Food Chemicals Codex, Water Chemicals Codex) and other stan

31、dards considered appropriate by the state or local agency. Various certification organizations may be involved in certifying products in accor- dance with NSFIANSI 61. Individual states or local agencies have authority to accept or accredit certification organizations within their jurisdiction. Accr

32、editation of certi- fication organizations may vary from jurisdiction to jurisdiction. Annex A, “Toxicology Review and Evaluation Procedures,“ to NSFIANSI 61 does not stipulate a maximum allowable level (Ma) of a contaminant for substances not regulated by a USEPA final maximum contaminant level (MC

33、L). 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 certifier. ANSIIAWWA C517 does not address additives

34、 requirements. Users of this stan- dard 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 offering to certify products for contact with, or tre

35、atment of, drinking water. 3. Determine current information on product certification. 11. Special Issues. I1.A. General. Conditions under which a valve is to be operated must be evaluated carefully by the purchaser. Torque requirements for valve operation vary considerably with differential pressure

36、 across the valve, fluid velocity, fluid temperature, and upstream piping conditions. Flow and pressure direction is important in the installation and use of an eccentric plug valve. Valve performance and sealing characteristics vary with direction of flow and pressure. I1.B. Advisory Information on

37、 Product Appliration. This standard does not cover all possible applications or manufacturing technologies. The purchaser should * NSF International, 789 N. Dixboro Road, Ann Arbor, MI 48105. t Both publications available fmNational Academy of Sciences, 500FifthSt.,NW, Washington, DC 20001. identify

38、 special requirements and required deviations from this standard and include appropriate language in purchase documents (refer to Sec. 1II.A) in this foreword. Other advisory information is provided below. 1. The maximum anticipated flow velocity through the valve, maximum non- shock shutoff pressur

39、e, and water temperature range are used by manufacturers to calculate torque requirements, which then may determine valve operating-component design and actuator sizing. Ihis information should be provided under items 6,7, and 18 of Sec. II1.A in this foreword. NOTE: If this information is not provi

40、ded by the purchaser, valve actuators may be sized to actuate the valve at a shutoff pressure differential equal to the design working pressure of the valve and a flow velocity of 8 fps (2.4 mps). Ihis may result in an over- sized valve actuator and a significant unwarranted expense for the purchase

41、r. 2. This standard limits handwheel rim pull, but not handwheel diameter. A smaller handwheel may require a more expensive actuator requiring more turns. If a large-diameter handwheel is of concern, because of clearance or other limitations, the diameter should be limited to an acceptable dimension

42、 under item 14 of Sec. 1II.A in this foreword. 3. This standard does not require a minimum waterway area nor does it limit head loss across the valve. If this is of concern, limitations should be provided. 4. Ihis standard allows a party other than the valve manufacturer to mount an actuator to a va

43、lve. The purchaser is cautioned that the valve manufacturer cannot assume responsibility for the valves sealing and operating performance if the actuator is mounted or adjusted by a party other than the valve manufacturer. Ifthis is a concern, requirements on actuator mounting should be included in

44、the purchase documents. 5. Electric actuators meeting ANSIIAWWA C542, Standard for Electric Motor Actuators for Valves and Slide Gates, can be supplied with or without an intermediate quarter-turn mechanism. If desired, the purchaser should specify a multiturn actuator coupled to an intermediate mec

45、hanism meeting ANSIIAWWA C542. 6. This standard does not require rubber parts to be specifically tested or to be specifically suitable for service with line content containing chlorine or chloramines. Standardized tests measuring resistance to chlorine or chloramine-bearing waters were not available

46、 at the date of introduction of this standard. If these or other chemical constituents are of concern, special requirements may be included in the purchase documents. Refer to item 26 of Sec. 1II.A in the foreword. 7. Valves produced in accordance with this standard are also commonly used for wastew

47、ater applications with high solids content. For water containing suspended solids or fluids other than water, the manufacturer should be consulted about the appli- cability of the valve and the materials of construction. 111. Use of This Standard. It is the responsibility of the user of an AWWA stan

48、dard to determine that the products described in that standard are suitable for use in the particular application being considered. 1II.A. Purchaser Options and Alternatives. lhe following items should be provided by the purchaser: 1. Standard to be used-that is, ANSIIAWWA C517, Resilient-Seated Cas

49、t- Iron Eccentric Plug Valves, of the latest revision. 2. Whether compliance with NSFIANSI 61, Drinking Water System Components-Health Effects, is required. 3. Size of valve. 4. Quantity required. 5. Type of ends: flanged, grooved (flexible or rigid), or mechanical-joint ends. 6. Maximum nonshock shutoff pressure and maximum nonshock line pressure. 7. Maximum flow velocity through the valve when plug is in the full open position. For applications requiring a fluid velocity greater than 8 fps (2.4 mps) when the valve is in the full open position, consult