1、NSF International Standard / American National StandardNSF/ANSI 24 - 2016 Plumbing System Components forRecreational VehiclesNSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global provider of public health and safety-based risk mana
2、gement solutions while serving 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 Sustainable Ca
3、rpet c/o NSF International 789 North Dixboro Road, P. O. Box 130140 Ann Arbor, Michigan 48113-0140 USA Phone: (734) 769-8010 Telex: 753215 NSF INTL FAX: (734) 769-0109 E-mail: infonsf.org Web: http:/www.nsf.org i NSF/ANSI 140 2012 NSF International Standard/ American National Standard for Plastics P
4、lumbing system components for recreational vehicles Standard Developer NSF International NSF International Board of Directors Designated as an ANSI Standard May 11, 2015 American National Standards Institute ii Prepared by The NSF Joint Committee on Plastics Recommended for Adoption by The NSF Counc
5、il of Public Health Consultants Adopted by NSF Board of Directors January 1969 Revised June 1970 Revised June 1987 Revised May 2015 Revised July 1971 Revised June 1988 April 2016 Revised September 1971 Reaffirmed September 1996 Revised April 1972 Revised March 2006 Revised September 1973 Revised Jul
6、y 2008 Revised July 1979 Revised April 2009 Revised November 1979 Revised March 2010 Published by NSF International P.O. Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making inquiries with regard to this Standard, please reference the designation “NSF/ANSI 24 2016.” Copy
7、right 2016 NSF International Previous Editions 2015, 2010, 2009, 2008, 2006, 1996, 1988, 1987, 1979, 1973, 1972, 1971, 1970 Unless 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 microfil
8、m, without permission in writing from NSF International. Printed in the United States of America. iii Disclaimers1 NSF, 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
9、 findings of NSF represent its professional judgment. NSF shall not be responsible to anyone 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, interpreta
10、tion of, or reliance upon this Standard. NSF Standards provide basic criteria to promote 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 organizat
11、ions provide safety requirements. Participation in NSF Standards development activities by 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 exa
12、mination or testing in NSF Standards development when such performance criteria may reasonably 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
13、not include all requirements for a specific product or unit, nor do they show the only method 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 p
14、art of NSF Standards. The annexes are provided as general guidelines to the manufacturer, regulatory 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 requi
15、rements for an ANS. Therefore, this Disclaimer 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. iv This page is intentionally left blank.v Contents 1 General . 1 1.1 Scop
16、e . 1 1.2 Measurement 1 1.3 Normative references and tools . 1 2 Definitions . 2 3 Materials . 4 3.1 General . 4 3.2 Dissimilar materials . 4 3.3 Welding 4 3.4 Potable water contact surfaces 4 3.5 Non-corrosion-resistant materials 4 4 Design and construction 4 4.1 General . 4 4.2 Cleanability . 4 4.
17、3 Backflow and back siphonage . 4 4.4 Specific requirements for components . 4 5 Connector couplings, caps, and drain hoses 4 5.1 Design and construction 4 5.2 Performance . 5 5.3 Marking and identification 5 6 Side-vented drainage system 5 6.1 Scope . 5 6.2 Materials . 5 6.3 Design and construction
18、 5 6.4 Performance . 6 6.5 Marking and identification 6 7 Plumbing fixtures/receptors (except toilets) 6 7.1 Scope . 6 7.2 Applicable standards . 6 7.3 Steel fixtures . 6 7.4 Design and construction 6 7.5 Showers 6 7.6 Shower receptors 6 7.7 Shower and tub enclosure . 7 7.8 Strainers . 7 7.9 Floor s
19、upport . 7 7.10 Watertight installation 7 7.11 Openings 7 7.12 Access 7 7.13 Brackets . 7 7.14 Marking and identification . 7 8 Nonpressurized potable water tanks 7 8.1 Design and construction 7 8.2 Performance . 8 8.3 Marking and identification 8 9 Pressurized potable water tanks, fittings, and fil
20、ler caps. 8 vi 9.1 Scope . 8 9.2 Design and construction 8 9.3 Performance . 8 9.4 Marking and identification 9 10 Waste holding tanks 9 10.1 Design and construction 9 10.2 Performance . 9 10.3 Marking and identification . 9 11 Mechanical seat toiletes 10 11.1 Scope . 10 11.2 Materials . 10 11.3 Des
21、ign and construction 10 11.4 Performance . 10 11.5 Load test. 11 12 Self-contained, recirculating, chemically controlled toilets 11 12.1 Scope . 11 12.2 Applicable standards. 11 12.3 Materials . 11 12.4 Load test. 11 12.5 Marking and identification . 11 13 Water closets 11 13.1 Scope . 11 13.2 Appli
22、cable standards. 11 13.3 Marking and identification . 11 14 Termination valves 12 14.1 Design and construction 12 14.2 Replacement 12 14.3 Performance . 12 14.4 Marking and identification . 12 15 Hand actuated water pumps 13 15.1 Scope . 13 15.2 Design and construction 13 15.3 Performance . 13 15.4
23、Marking and identification . 13 16 Electric water pumps . 13 16.1 Scope . 13 16.2 Screens 13 16.3 Performance . 13 16.4 Instruction manual 14 16.5 Marking and identification . 14 17 Detachable waste holding systems 14 17.1 Scope . 14 17.2 Tank design and construction . 14 17.3 Traps 14 17.4 Connecti
24、ons and draining . 14 17.5 Drain system design and construction . 14 17.6 Performance . 14 17.7 Impact resistance 15 vii 17.8 Marking and identification . 15 18 Flexible drain system . 15 18.1 Scope . 15 18.2 Design and construction 15 18.3 Performance . 15 18.4 Marking and identification . 16 19 Ai
25、r Admittance valves 16 19.1 Scope . 16 19.2 Air admittance valves 16 20 Stainless steel sinks 16 20.1 Scope . 16 20.2 Recreational vehicle sinks . 16 21 Flexible vent systems, pipe, and fittimgs 16 21.1 Scope . 16 21.2 Performance . 16 21.3 Dimensions . 17 21.4 Flexibility. 17 21.5 Fittings 17 21.6
26、Chemical resistance 17 21.7 Water absorption 17 21.8 Markings . 18 22 Antifreeze for potable water systems . 18 22.1 Scope . 18 22.2 Materials . 18 22.3 Performance . 19 22.4 Compatibility . 19 22.5 Marking and identification of antifreeze . 19 22.6 Quality control and records maintenance 20 23 Port
27、able toilets 20 23.1 Scope . 20 23.2 Materials . 20 23.3 Flush water holding tank design and construction 20 23.4 Waste holding tank design and construction 20 23.5 Performance . 21 24 Installed toilet systems with detachable waste holding tanks 21 24.1 Scope . 21 24.2 Materials . 21 24.3 Design and
28、 construction plumbed systems . 21 24.4 Design and construction systems that are not plumbed 21 24.5 Detachable waste holding tank design and construction 22 24.6 Performance requirements 22 viii This page is intentionally left blank.ix Foreword2 The purpose of this Standard is to establish minimum
29、requirements for materials, design, and construction and performance of pipe, fittings, valves, traps, vents, tanks, pumps, connectors, fixtures, appliances, and similar appurtenances used in a plumbing system of a recreational vehicle. In this edition of NSF/ANSI 24, the following revision has been
30、 incorporated: Issue 10 This issue revises the measurement requirement in section 18.2.1 of NSF/ANSI 24. This Standard was developed by the NSF Joint Committee on Plastics using the consensus process described by the American National Standards Institute. Suggestions for improvement of this Standard
31、 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 Plastics at standardsnsf.org. or c/o NSF International, Standards Department, PO Box 130140, Ann Arbor, Michigan 48113-0140,
32、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. Therefore, this Foreword may contain material that has not been subjected to public review or a consensus process. In ad
33、dition, it does not contain requirements necessary for conformance to the Standard. This page is intentionally left blank.1 2016NSF NSF/ANSI 24 2016 NSF/ANSI Standard for Plastics Plumbing system components for recreational vehicles 1 General 1.1 Scope This Standard covers pipe, fittings, valves, tr
34、aps, vents, tanks, pumps, connectors, fixtures, appliances, and similar appurtenances used in a plumbing system of a recreational vehicle. 1.2 Measurement Decimal and SI conversions provided parenthetically shall be considered equivalent. Metric conversions have been made according to IEEE/ASTM SI 1
35、0. 1.3 Normative references and tools The following reference documents contain requirements that constitute requirements of this NSF/ANSI Standard. At the time of publication, the indicated editions were valid. All documents are subject to revision, and it is the responsibility of the user of this
36、specification to determine the applicability of the most recent editions of these documents. The most recent published edition of the document shall be used for undated references. ANSI/ASSE 1001 2008. Performance Requirements for Atmospheric Type Vacuum Breakers3,4 ANSI/ASSE 1002 2008. Performance
37、Requirements for Anti-siphon Fill Valves for Gravity Water Closet Flush Tanks3,4 ANSI/ASSE 1051 2009. Performance Requirements for Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems3,4 ASME A112.18.2/CSA B125.2 2011. Plumbing Waste Fittings5,6 ASME A112.18.3 2002. Perform
38、ance Requirements for Backflow Devices and Systems in Plumbing Fixture Fittings5 ASME A112.19.2/CSA B45.1 2008. Ceramic Plumbing Fixtures5,6 3 American National Standards Institute/ANSI), 11 West 42nd Street, New York, NY 10036 4 American Society of Sanitary Engineers (ASSE) International, 18927 Hic
39、kory Creek Drive, Suite 220, Mokena, IL 60448 5 The American Society for Mechanical Engineers (ASME) International, Three Park Avenue, New York, NY 10016-5990 6 Canadian Standards Association (CSA), 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W5N6 2016 NSF NSF/ANSI 24 2016 2 ASME A1
40、12.19.3/CSA B45.4 2008. Stainless Steel Plumbing Fixtures5,6 ASME 2013. Boiler and Pressure Vessel Code5 ASTM D543 2006. Standard Practices for Evaluating the Resistance of Plastics to Chemical Reagents7 ASTM D1384 05 (2012). Standard Test Method for Corrosion Test for Engine Coolants in Glassware7
41、ASTM D2444 99 (2010). Standard Test Method for Determination of the Impact Resistance of Thermoplastic Pipe and Fittings by Means of a Tup (Falling Weight)7 ASTM E202 2012. Standard Test Methods for Analysis of Ethylene Glycols and Propylene Glycols7 CSA B45.5/IAPMO Z124 2011. Plastic Plumbing Fixtu
42、res6,8 Code of Federal Regulations, Title 121 CFR, 170-199. Food and Drug Administration, Department of Health and Human Services9 IAPMO PS 033 2011. Flexible PVC Hose for Pools, Hot Tubs, Spas, and Jetted Bathtubs8 IAPMO TS 1 2011e1. Mechanical Seal Toilets With or Without Integral Wastewater Tank
43、for Use in Recreational Vehicles8 IAPMO TS 12 97e1. Self-Contained, Electrically Operated Recirculating Chemically Controlled Toilet8 IEEE/ASTM SI 10 2002. Standard for the Use of the International System of Units (SI): The Modern Metric System510 NFPA (FIRE) 119.2 2011. Standard on Recreational Veh
44、icles11 NSF/ANSI 14. Plastics piping system componentsd and related materials NFS/ANSI 61. Drinking water system components Health effects 2 Definitions 2.1 accessible: Fabricated to be exposed for cleaning and inspection using simple tools (screwdriver, pliers, open-end wrench, etc). 2.1.1 readily
45、accessible: Fabricated to be exposed for cleaning, inspection, and maintenance or removal using simple tools. 2.2 backflow: The flow of water or other liquids, mixtures, or substances into the distribution pipes of a potable water supply from any sources other than its intended source. 2.3 body wast
46、e: Solid waste materials, inclusive of urine and feces, deposited in plumbing fixtures. 7 ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 8 International Association of Plumbing and Mechanical Officials (IAPMO), 5001 E. Philadelphia St., Ontario, CA 91761 9 U.S. Food and
47、Drug Adminstration, 5600 Fishers Lane, Rockville, MD 20857-0001 10 Institute of Electrical and Electronics Engineers, Inc. 445 Hoes Lane, Piscataway, NJ 08854 11National Fire Protection Association (NFPA), 1 Batterymarch Park, PO Box 9101, Quincy, MA 02269 2016 NSF NSF/ANSI 24 2016 3 2.4 burst prote
48、ction: Prevention of physical damage to the potable water system by antifreeze at specified protection temperature and concentration of active ingredient. 2.5 corrosion-resistant materials: Materials that maintain their original surface characteristics under prolonged contact with the environment an
49、d chemical compounds. 2.6 drainage system: Piping that conveys body or liquid wastes to the drain outlet, excluding the sewer connector. 2.7 fixture: A receptor for water or waterborne wastes that discharges into a sanitary drainage system or waste holding tank. 2.7.1 fixture drain: The drain from a fixtures trap or the drain outlet, or to the junction of that drain with any other drain pipe. 2.8 flood level: The level in the receptacle over which water would overlfow to the outside of the receptacle. 2.9 flush water
