1、ANSI/AWWA E200-18 (First Edition) AWWA Standard SM Progressive Cavity Chemical Metering Pumps Effective date: Aug. 1, 2018. First edition approved by AWWA Board of Directors Jan. 20, 2018. This edition approved Jan. 20, 2018. Approved by American National Standards Institute Feb. 14, 2018.ii AWWA St
2、andard 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 normally contained in specifications. The AWWA standards usually contain optio
3、ns 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 publication of a standard does not constitute endorsement of any product or product type, nor does AWWA test, certify, or approve any product
4、. 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 pr
5、ovide satisfactory service. When AWWA revises or withdraws this standard, an official notice of action will be placed in the Official Notice section of Journal AWWA. The action becomes effective on the first day of the month following the month of Journal AWWA publication of the official notice. Ame
6、rican 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 the general public. The existence of an American National Standard
7、 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. American National Standards are subject to periodic review, and users are cautioned t
8、o 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 Standar
9、ds. Caution 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
10、, 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 writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 100
11、36; 212.642.4900; or e-mailing infoansi.org. ISBN-13, print: 978-1-62576-300-6 eISBN-13, electronic: 978-1-61300-481-4DOI: http:/dx.doi.org/10.12999/AWWA.E200.18 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, i
12、ncluding scanning, recording, or any information or retrieval system. Reproduction and commercial use of this material is prohibited, except with written permission from the publisher. Copyright 2018 by American Water Works Association Printed in USA If you are interested in using any part of this p
13、ublication for training, creating a derivative work, or for any commercial use, written permission from AWWA is required. Please send your request to permissionsawwa.org. iii Committee Personnel The AWWA Standards Committee on Progressive Cavity Chemical Metering Pumps, which reviewed and approved t
14、his standard, had the following personnel at the time of approval: Michael Stickley, Chair General Interest Members D. Brown, *Standards Council Liaison, CB Conserve, Sacramento, Calif. C.S. Frizzell, CDM Smith, Maitland, Fla. T.J. McCandless, * Standards Engineer Liaison, AWWA, Denver, Colo. M. Sti
15、ckley, Jacobs Engineering, Birmingham, Ala. Z. Yu, AECOM Canada Ltd., Kitchener, Ont. Producer Members M. Dillon, SEEPEX, Inc., Enon, Ohio W. Kimbell, Clearwater Separation Systems Inc., Midlothian, Tex. D. Lakovic, SEEPEX, Inc., Enon, Ohio User Members C.S. Alig, Orlando, Fla. G.L. Dewitt, Zone 7 W
16、ater Agency, Pleasanton, Calif. M.G. OConnell, Suffolk County Water Authority, Bay Shore, N.Y. * Liaison, nonvoting AlternateThis page intentionally blank.v Foreword I Introduction. . vii I.A Background . vii I.B History vii I.C Acceptance viii II Special Issues . ix III Use of This Standard . ix II
17、I.A Purchaser Options and Alternatives . ix IV Major Revisions . x V Comments x Standard 1 General 1.1 Scope. 1 1.2 Purpose . 1 1.3 Application 1 2 References 2 3 Definitions . 3 4 Requirements 4.1 Materials . 6 4.2 Pump Design 8 5 Verification 5.1 Factory T ests 14 5.2 Basis for Rejection . 14 6 De
18、livery, Preparation for Shipment, and Affidavit 6.1 Marking 14 6.2 Packaging and Shipping 15 6.3 Storage 15 6.4 Operation and Maintenance 16 6.5 Affidavit of Compliance 16 Appendix A Material Data Sheet . 17 Figures 1 Typical Progressive Cavity Chemical Metering Pump . 3 2 Stages 3 3 The Number of S
19、tages Determines the Pressure Capacity of a Progressing Cavity Pump. 9Contents All AWWA standards follow the general format indicated subsequently. Some variations from this format may be found in a particular standard. SEC. PAGE SEC. PAGEThis page intentionally blank.vii Foreword This foreword is f
20、or information only and is not a part of ANSI*/AWWA E200. I. Introduction. I.A. Background. This standard describes the minimum requirements for progressive cavity chemical metering pumps for water and wastewater treatment systems. This standard covers progressive cavity chemical metering pumps for
21、materials resistant to aggressive chemicals including sodium hypochlorite (NaOCl), ferric chloride (FeCL 3 ), sulfuric acid (H 2 SO 4 ), hydrochloric acid (HCl), and other strong acids and bases. A progressive cavity chemical metering pump is a type of positive displacement pump and is also known as
22、 a progressing cavity pump, pro-cav pump, eccentric screw pump, or cavity pump. It transfers fluid by means of the progress, through the pump, of a sequence of small, fixed-shape, discrete cavities as its rotor turns. This leads to the volumetric flow being proportional to the rotation rate and to l
23、ow levels of shear being applied to the pumped fluid. Hence these pumps have application in fluid metering and pumping of thin-to-viscous or shear-sensitive materials. The cavities taper down toward their ends and overlap with their neighbors, so that, in general, the cross section of fluid moving t
24、hrough the pump never changes and no flow pulsing is caused by the arrival of cavities at the outlet, other than that caused by compression of air or vapor in the fluid or by speed variation in the drive components. These pumps do not pulsate and can be fitted with a variety of highly accurate varia
25、ble speed drives and reliable mechanical seals. I.B. History. While inventing a compressor for jet engines, aviation pioneer Ren Moineau discovered in 1930 that this principle could also work as a pumping system. The University of Paris awarded Moineau a doctorate of science for his thesis on “the n
26、ew capsulism.” His pioneering dissertation laid the groundwork for the modern progressive cavity pump. In 2015, AWWAs Standards Council approved development of a new standard for Progressive Cavity Chemical Metering Pumps. The new standard was assigned to AWWA Standards Committee 273 for Progressive
27、 Cavity Chemical Metering Pumps. * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. (accessed July 6, 2018).viii This first edition of ANSI/AWWA E200 was approved by the AWWA Board of Directors on Jan. 20, 2018. I.C. Acceptance. In May 1985, the US Envir
28、onmental 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 members of the original consortium include
29、d 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 April 1990, USEPA formally withdrew its list of ac
30、ceptable drinking water additives, and regulatory oversight of direct and indirect drinking water additives passed to the process developed by the consortium under the leadership of NSF . In the United States, authority to regulate products for use in, or in contact with, drinking water rests with i
31、ndividual 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 products, state and local agencies may use various references, including 1. Specific policies of the
32、state or local agency. 2. Two standards developed under the direction of NSF : NSF/ANSI60, Drinking Water Treatment ChemicalsHealth Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. 3. Other references, including ANSI/AWWA standards, Food Chemicals Codex, Water Chemicals Code
33、x, and other standards considered appropriate by the state or local agency. Various certification organizations may be involved in certifying products in accordance with NSF/ANSI 61. Individual states or local agencies have authority to accept or accredit certification organizations within their jur
34、isdiction. Accreditation of certification organizations may vary from jurisdiction to jurisdiction. 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 contami
35、nant level (MCL). The MALs of an * Persons outside the United States should contact the appropriate authority having jurisdiction. NSF International, 789 North Dixboro Road, Ann Arbor, MI 48105. Both publications available from National Academy of Sciences, 500 Fifth Street, N.W., Washington, DC 200
36、01.ix 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. ANSI/A WWA E200 does not address additives requiremen
37、ts. Users of this standard 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 treatment of, dr
38、inking water. 3. Determine current information on product certification. II. Special Issues. No special issues provided with this standard. 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 u
39、se in the particular application being considered. III.A. Purchaser Options and Alternatives. The following information shall be provided by the purchaser: 1. Standard usedthat is, ANSI/AWWA E200, Progressive Cavity Chemical Metering Pumps, of latest revision. 2. Whether compliance with NSF/ANSI 61,
40、 Drinking Water System ComponentsHealth Effects, is required or not. 3. Details of federal, state, and local requirements (Sec. 4.1.1). 4. Request for elastomer test coupons (Sec. 4.1.2.2). 5. Request for stator dimensions (Sec. 4.1.4.2). 6. Request for quality measurement certificates (Sec. 4.1.4.2
41、.2). 7. Apparent viscosity test requirements (Sec. 4.2.2.1.1). 8. Drive accuracy (Sec. 4.2.5.1). 9. Required turn down (Sec. 4.2.5.1.1). 10. Minimum dry film thickness other than 3 mils (Sec. 4.2.10.1). 11. Field top-coating (Sec. 4.2.10.2). 12. Required holiday testing (Sec. 4.2.11). 13. Vibration
42、requirements (Sec. 4.2.12). 14. Required run-dry protection (Sec. 4.2.14). 15. Written instructions for storage requirements (Sec. 6.3.2). 16. Request for Affidavit of Compliance from manufacturer (Sec. 6.5).x IV. Major Revisions. This is the first edition of the standard. V. Comments. If you have a
43、ny comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711, FAX at 303.795.7603, write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098, or e-mail at standardsawwa.org.1 Progressive Cavity Chemical Metering Pumps SECTION 1: GE
44、NERAL Sec. 1.1 Scope This standard provides minimum requirements for progressive cavity chemical metering pumps used with polymers and aggressive chemicals including sodium hypochlorite (NaOCl), ferric chloride (FeCL 3 ), sulfuric acid (H 2 SO 4 ), hydrochloric acid (HCl), and other strong acids and
45、 bases. This standard includes design, materials, application, testing, and delivery of these metering pumps. Sec. 1.2 Purpose The purpose of this standard is to provide minimum requirements for progressive cavity chemical metering pumps suitable for water and wastewater service, including design, m
46、aterials, application, testing, and delivery. Sec. 1.3 Application This standard can be referenced by the purchaser for pumps described in Sec. 1.1. ANSI/AWWA E200-18 (First Edition) AWWA Standard2 AWWA E200-18 SECTION 2: REFERENCES This standard references the following documents. In their latest e
47、ditions, they form a part of this standard to the extent specified within the standard. In any case of conflict, the requirements of this standard shall prevail. 3-A *Sanitary Standards for Centrifugal and Positive Rotary Pumps, Number 02-11 AISI 4150 Alloy Steel (UNS G41500) ANSI /AWWA C207Steel Pi
48、pe Flanges for Waterworks Service, Sizes 4 In. Through 144 In. (100 mm Through 3,600 mm) ANSI/AWWA C550Protective Interior Coatings for Valves and Hydrants ANSI/HI 1.6Centrifugal Pump Tests API STD 676 (R2015) Positive Displacement PumpsRotary (3rd edition) ASME *B16.1Gray Iron Pipe Flanges and Flan
49、ged Fittings: Classes 25, 125, and 250 ASME B16.5Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24 Metric/Inch Standard. ASTM D1418-17 Standard Practice for Rubber and Rubber Latices Nomenclature ISO 9001:2008 Quality Management System ISO 1629:2013 Rubber and LaticesNomenclature NEMA MG 1Motors and Generators NSF /ANSI 61Drinking Water System ComponentsHealth Effects SSPC * SP 6Commercial Blast Cleaning SSPCSP 10Near-White Blast Cleaning * 3-A Sanitar
