1、NSF International Standard / American National StandardNSF/ANSI - 20$+3!.%(0.0%+*5/0!)/!/0$!0%“!0/NSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global provider of public health and safety-based risk management solutions while serv
2、ing the interests of all stakeholders.This Standard is subject to revision.Contact NSF to confirm this revision is current.Users of this Standard may request clarifications and interpretations, or propose revisions by contacting:Chair, Joint Committee on Drinking Water Treatment Unitsc/o NSF Interna
3、tional789 North Dixboro Road, P.O. Box 130140Ann Arbor, Michigan 48113-0140 USAPhone: (734) 769-8010Telex: 753215 NSF INTLFAX: (734) 769-0109E-mail: infonsf.orgWeb: http:/www.nsf.orgNSF/ANSI 177 2014iNSF International Standard/American National StandardIRU:DWHU7UHDWPHQW8QLWV6KRZHUILOWUDWLRQVVWHPVAes
4、thetic effectsStandard DeveloperNSF InternationalNSF InternationalDesignated as an ANSI StandardDecember 11, 2014American National Standards InstituteNSF/ANSI 177 2014iiPrepared byThe NSF Joint Committee on Drinking Water Treatment UnitsRecommended for adoption by The NSF Council of Public Health Co
5、nsultantsAdopted byThe NSF Board of DirectorsSeptember 2004Revised December 2014Published byNSF InternationalPO Box 130140, Ann Arbor, Michigan 48113-0140, USAFor ordering copies or for making inquiries with regard to this Standard, please reference the designation “NSF/ANSI 1772014.” Copyright 2014
6、, NSF InternationalPrevious editions 2004Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from NSF International.Printed in the United State
7、s of America.iiiDisclaimers1NSF, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. The opinions and findings of NSF represent its professional judgment. NSF shall not be responsible to a
8、nyone for the use of or reliance upon this Standard by anyone. NSF shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Standard.NSF Standards provide basic criteria to promote
9、 sanitation and protection of the public health. Provisions for mechanical and electrical safety have not been included in this Standard because governmental agencies or other national standards-setting organizations provide safety requirements.Participation in NSF Standards development activities b
10、y regulatory agency representatives (federal, local, state) shall not constitute their agencys endorsement of NSF or any of its Standards.Preference is given to the use of performance criteria measurable by examination or testing in NSF Standards development when such performance criteria may reason
11、ably be used in lieu of design, materials, or construction criteria.The illustrations, if provided, are intended to assist in understanding their adjacent standard requirements. However, the illustrations may not include all requirements for a specific product or unit, nor do they show the only meth
12、od of fabricating such arrangements. Such partial drawings shall not be used to justify improper or incomplete design and construction.Unless otherwise referenced, the annexes are not considered an integral part of NSF Standards. The annexes are provided as general guidelines to the manufacturer, re
13、gulatory agency, user, or certifying organization._1 The information contained in this Disclaimer is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. As such, this Disclaimer may contain material that has not been subjecte
14、d to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard.ivThis page is intentionally left blank.vContents1 General.11.1 Purpose 11.2 Scope .11.3 Minimum requirements 11.4 Alternate materials, designs, and construction. 11.5 F
15、ree Available Chlorine (FAC) reduction performance claims 12 Normative references 13 Definitions .14 Materials .14.1 Materials in contact with shower water 15 Structural performance 25.1 Structural integrity. 25.2 Acceptance.25.3 Working pressure 35.4 Structural integrity test methods 36 Minimum per
16、formance claims 56.1 Elements.56.2 Hazards 56.3 Operation temperature 56.4 Minimum service flow 56.5 Rated service flow. 67 Elective performance claims test methods 67.1 General requirements . 67.2 FAC reduction testing 88 Instruction and information 98.1 Installation, operation, and maintenance ins
17、truction. 98.2 Data plate . 108.3 Replacement components. 108.4 Performance data sheet 10viThis page is intentionally left blank.viiForeword2NSF International, The Public Health and Safety Company, has developed Standards and provided testing and certification services in the areas of public health
18、and safety for more than 55 years. NSF Standard 177 is an excellent example of the unique service NSF provides affected stakeholders.The purpose of this Standard is to establish minimum requirements for materials, design, construction, and performance of shower filtration systems that are designed t
19、o reduce aesthetic free available chlorine in public or private water supplies. This Standard specifies the minimum product literature and labeling information that a manufacturer is required to supply authorized representatives and system owners. This Standard provides minimum service-related oblig
20、ations that the manufacturer supplies to system owners.This Standard was developed by the NSF Joint Committee on Drinking Water Treatment Units using the consensus process described by the American National Standards Institute.This edition of the Standard includes the addition of the reference to NS
21、F/ANSI 330 - Glossary of DrinkingWater Treatment Unit Terminology under section 2, and the removal of the definitions under section 3.NSF offers a certification program to NSF/ANSI Standard 177. Products certified by NSF carry the NSF Mark, one of the most respected certification marks in the world.
22、 The NSF Mark on a product gives consumers and retailers assurance that the product has been tested and meets the requirements of the NSF Standard. For more information on the NSF certification program, please contact the Drinking Water Treatment Unit program at NSF International, P.O. Box 130140, A
23、nn Arbor, Michigan 48113-0140 or at 1-734-769-8010.Suggestions for improvement of this Standard are welcome. This Standard is maintained on a Continuous Maintenance schedule and can be opened for comment at any time. Comments should be sent to Chair, Joint Committee on Drinking Water Treatment Units
24、 at standardsnsf.org, or c/o NSF International, Standards Department, P.O. Box 130140, Ann Arbor, Michigan, 48113-0140, USA._2 The information contained in this Foreword is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS.
25、As such, this Foreword may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard.viiiThis page is intentionally left blank.1 2014 NSF NSF/ANSI 177 2014NSF/ANSI StandardIRU:DWHU7UHD
26、WPHQW8QLWVShower filtration systems Aesthetic effects1 General1.1 PurposeIt is the purpose of this Standard to establish minimum performance requirements for shower filtration systems including substance reduction performance, materials safety, and design, construction, and structural performance. T
27、his Standard also specifies the minimum product literature and labeling information that a manufacturer shall supply to authorized representatives and system owners. 1.2 ScopeThe point-of-use shower filtration systems addressed by this Standard are designed to be used for the reduction of specific s
28、ubstances that may be present in potable water (public or private). Systems covered under this Standard are intended to reduce substances affecting the aesthetic quality of the water. Only whole systems shall be evaluated under this Standard. Systems with components or functions covered under other
29、NSF or NSF/ANSI standards or criteria shall comply with those applicable requirements.1.3 Minimum requirementsThis Standard establishes minimum requirements. Some requirements may be waived if it is verified that the candidate system or component is sufficiently similar to a tested system or compone
30、nt as to provide equivalent or better operation and performance.A system as defined in this standard shall meet all requirements of this Standard.A component as defined in this standard shall meet the requirements of 4. If the component is pressure bearing, it shall also meet the applicable requirem
31、ents of 5.1.4 Alternate materials, designs, and constructionWhile specific materials, designs, and construction may be stipulated in this Standard, systems that incorporate alternate materials, designs, and construction may be acceptable when it is verified that such systems meet the applicable requ
32、irements stated herein.1.5 Free Available Chlorine (FAC) reduction performance claims1.5.1 All NSF/ANSI 177 performance claims shall be verified and substantiated by test data generated under the requirements of NSF/ANSI 177.1.5.2 When making performance claims for substances not specifically addres
33、sed in the scope of this Standard or for those substances not specifically addressed but falling under the scope of NSF/ANSI 177, those claims not specifically addressed in the Standard shall be so identified. 2014 NSF NSF/ANSI 177 201412 Normative referencesThe following documents contain requireme
34、nts that, by reference in this text, constitute requirements of this Standard. At the time of publication, the indicated editions were valid. All of the documents are subject to revision and parties are encouraged to investigate the possibility of applying the recent editions of the documents indica
35、ted below. The most recent published edition of the document shall be used for undated references.APHA, Standard Methods for the Examination of Water and Wastewater, twentieth edition3NSF/ANSI 330, Glossary of drinking water treatment unit terminologyUSEPA-600/4-79-020, Methods for the Chemical Anal
36、ysis of Water and Wastes, March 19834USEPA-600/R-94/111, Methods for the Determination of Metals in Environmental Samples, Supplement 1, May 19944USEPA-90/020, Methods for the Determination of Organic Compounds in Drinking Water, Supplement 1, July 19904USEPA Guidelines Establishing Test Procedures
37、for the Analysis of Pollutants, 40 CFR Part 136 5USEPA National Primary Drinking Water Regulations, 40 CFR Part 1415USEPA Safe Drinking Water Act, 42 USC s/s 300f et seq. (1974) as amended in 19865USFDA Code of Federal Regulations, Title 21, (Food and Drugs) Direct Food Additive Substances Parts 170
38、 through 199, April 1, 199263 DefinitionsTerms used in this Standard that have special technical meaning are defined in NSF/ANSI 330.4 Materials4.1 Materials in contact with shower waterMaterials in contact with shower water shall not contain lead as an intentional ingredient, except brass meeting t
39、he definition of “lead free” under the specific provisions of the Safe Drinking Water Act of the United States, as amended in 1986. Materials in contact with shower water shall not be solvent bonded.4.1.1 Complete formulation information on any material not certified as specifically compliant with t
40、he sections of the U.S. Code of Federal Regulations, Title 21, listed in table 1, shall be reviewed to determine whether the material contains lead as an intentional ingredient.4.1.2 Production methods shall be reviewed to determine whether materials in contact with shower water are solvent bonded._
41、3 American Public Health Association (APHA), 800 I Street, NW, Washington, DC 200014 USEPA, Environmental Monitoring and Support Laboratory, Cincinnati, OH 452685 Superintendent of Documents, U.S. Government Printing Office, Washington, DC 204026 USFDA, 5600 Fishers Lane, Rockville, MD 20857 2014 NS
42、F NSF/ANSI 177 201424.1.3 If the system does not incorporate any materials that contain lead as an intentional ingredient, except brass meeting the definition of “lead free” under the specific provisions of the Safe Drinking Water Act of the United States, as amended in 1986, or incorporate solvent
43、bonding of materials in contact with shower water, the systems shall meet the requirements of this Standard.Table 1 Materials listed in U.S. Code of Federal Regulations,Title 21, not requiring formulation reviewSections Material172.880178.3700 petrolatum172.888178.3720 synthetic petroleum wax172.878
44、 white mineral oil172.884 odorless white petroleum hydrocarbons172.886178.3710 petroleum wax173.25 ion exchange resins provided that the sub-section stating the composition of the resin is specified173.65 divinyl benzene copolymer178.3620 mineral oilPart 184direct food substances affirmed as general
45、ly recognized as safe when used in accordance with any conditions of use specified for the substance5 Structural performance5.1 Structural integrityThe purpose for testing structural integrity performance is to evaluate the materials, design, and fabrication quality of the complete shower filtration
46、 system.5.2 AcceptanceEach test of structural integrity (cyclic pressure and hydrostatic pressure) shall be performed on a separate system. Complete systems shall be tested for structural integrity in accordance with 5.4 at the pressures specified in table 2. When more than one pressure is specified
47、 in table 2, testing shall be done at the higher pressure.Complete systems shall be watertight when tested for structural integrity under 5.4. 2014 NSF NSF/ANSI 177 20143Table 2 Structural integrity testing requirementsSystem type Hydrostatic pressure test1 Cyclic pressure test1Systems designed for
48、open discharge1.5 x maximum working pressure or 1,293 kPa (187.5 psig)10,000 cycles at 0 to 345 kPa(0 to 50 psig)Systems not designed for open discharge3 x maximum working pressure or 2,585 kPa (375 psig)100,000 cycles at 0 to 1,040 kPa(0 to 150 psig) ormaximum working pressure1 Testing shall be don
49、e at the greater pressure.5.3 Working pressureThe shower filtration system shall be designed and constructed to maintain structural integrity at a pressure of 860 kPa (125 psig) or the maximum working pressure, whichever is greater. 5.4 Structural integrity test methods5.4.1 ApparatusAn enclosure shall be provided for each system teste
