1、AWWA Standard SM Crosslinked Polyethylene (PEX) Pressure Tubing, In. (13 mm) Through 3 In. (76 mm), for Water Service Effective date: April 1, 2016. First edition approved by AWWA Board of Directors June 11, 2006. This edition approved Jan. 16, 2016. Approved by American National Standards Institute
2、 Nov. 9, 2015. ANSI/AWWA C904-16 (Revision of ANSI/AWWA C904-06) Copyright 2016 American Water Works Association. All Rights Reserved. ii AWWA Standard This document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA standards describe minimum requirements and do
3、 not contain all of the engineering and administrative information normally contained in specifications. The AWWA standards usually contain options 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. A
4、WWA pub- lication 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 entirely voluntary. This standard does not supersede or take precedence over or displace any applicable law, regulation, o
5、r code of any governmental authority. AWWA standards are intended to represent a consensus of the water supply industry that the product described will provide satisfactory service. When AWWA revises or withdraws this standard, an official notice of action will be placed on the first page of the Off
6、icial Notice section of Journal American Water Works Association. The action becomes effective on the first day of the month following the month of Journal American Water Works Association publication of the official notice. American National Standard An American National Standard implies a consensu
7、s 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 does not in any respect preclude anyone, whether that person has ap - p
8、roved 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 to obtain the latest editions. Producers of goods made in conformity w
9、ith an American National Standard are encour - aged 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 Standards. Caution n oti Ce : The American National Standards Institute (
10、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, revise, or withdraw this standard no later than five years fro
11、m the date of publication. 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 10036; 212.642.4900; or emailing infoansi.org. ISBN-13, print: 978-1-
12、62576-144-6 eISBN-13, electronic: 978-1-61300-369-5DOI: http:/dx.doi.org/10.12999/AWWA.C906.16 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information or retrieval syst
13、em, except in the form of brief excerpts or quotations for review purposes, without the written permission of the publisher. Copyright 2016 by American Water Works Association Printed in USA hours of work by your fellow water professionals. Revenue from the sales of this AWWA material supports ongoi
14、ng product development. Unauthorized distribution, either electronic or photocopied, is illegal and hinders AWWAs mission to support the water community. This AWWA content is the product of thousands of Copyright 2016 American Water Works Association. All Rights Reserved. iii Committee Personnel The
15、 C904PEX Subcommittee, which reviewed and developed this revision, had the following personnel at the time of approval: Lance MacNevin, Chair A.J. Ciechanowski, NSF International, Ann Arbor, Mich. (NSF) L.J. Gill, IPEX, Mississauga, Ont., Canada (AWWA) M. Huynh, JM Eagle, Los Angeles, Calif. (AWWA)
16、R. Knapp, Plastics Pipe Institute, Apple Valley, Minn. (AWWA) L. MacNevin, REHAU Construction LLC, Leesburg, Va. (AWWA) G. Morgan, Viega LLC, Wichita, Kan. (AWWA) C.G. Rubeiz, Plastics Pipe Institute, Fairfax, Va. (AWWA) G. Runyan, Zurn PEX Inc., Commerce, Texas (AWWA) H. Svetlik, Georg Fischer Cent
17、ral Plastics LLC, Dallas, Texas (AWWA) The AWWA Standards Committee on Polyolefin Pressure Pipe and Fittings, which reviewed and approved this standard, had the following personnel at the time of approval: John F. Fishburne, Chair General Interest Members J.L. Beaver, Simpson Gumpertz Heger Inc., Wa
18、ltham, Mass. (AWWA) J.P. Castronovo, Blue Ridge, Ga. (AWWA) A. Chastain-Howley,* Standards Council Liaison, Black & Veatch, Arlington, Texas (AWWA) K.C. Choquette, Des Moines, Iowa (AWWA) A.J. Ciechanowski, NSF International, Ann Arbor, Mich. (NSF) D.E. Duvall, Engineering Systems Inc., Aurora, Ill.
19、 (AWWA) M.L. Magnant, Iowa Department of Public Health, Des Moines, Iowa (AWWA) D.L. McPherson, HDR, Charlotte, N.C. (AWWA) S.A. Mruk, New Providence, N.J. (AWWA) P.J. Olson,* Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) J.R. Paschal, Paschal Engineering LLC, Ypsilanti, Mich. (AWWA) S.C. W
20、illiams, CH2M HILL, Atlanta, Ga. (AWWA) * Liaison, nonvoting Copyright 2016 American Water Works Association. All Rights Reserved. iv Producer Members W.I. Adams, WL Plastics Corporation, Cedar City, Utah (AWWA) L.J. Gill, IPEX, Mississauga, Ont., Canada (AWWA) R. Houle, Mueller Service Company, Mem
21、phis, Tenn. (AWWA) M. Huynh, JM Eagle, Los Angeles, Calif. (AWWA) L. MacNevin, REHAU Construction, LLC, Leesburg, Va. (AWWA) C.G. Rubeiz, Plastics Pipe Institute, Fairfax, Va. (AWWA) S.D. Sandstrum, ISCO Industries, Louisville, Ky. (AWWA) H. Svetlik, Georg Fischer Central Plastics LLC, Dallas, Texas
22、 (AWWA) User Members L. Aguiar, Miami Dade Water and Sewer Department, Miami, Fla. (AWWA) E.A. Ambler, City of Casselberry, Cassleberry, Fla. (AWWA) L.M. Bowles, Bureau of Reclamation, Denver, Colo. (AWWA) J.F. Fishburne, Charlotte, N.C. (AWWA) H. Link, Colorado Springs Utilities, Colorado Springs,
23、Colo. (AWWA) J.R. Peters, Carmel Utilities, Carmel, Ind. (AWWA) G. Scoby, Los Gatos, Calif. (AWWA) M.A. Wirtz, City of Fort Wayne, Fort Wayne, Ind. (AWWA) Copyright 2016 American Water Works Association. All Rights Reserved. v Contents All AWWA standards follow the general format indicated subsequen
24、tly. Some variations from this format may be found in a particular standard. SEC. PAGE SEC. PAGE Foreword I Introduction vii I.A Background . vii I.B History vii I.C Acceptance vii II Special Issues viii II.A Design Criteria . ix II.B Installation x II.C Water System Disinfection xii II.D Squeeze-Of
25、f xii II.E References . xii III Use of This Standard xiii III.A Purchaser Options and Alternatives xiii III.B Modification to Standard . xiv IV Major Revisions xiv V Comments . xiv Standard 1 General 1.1 Scope 1 1.2 Purpose . 2 1.3 Application 2 2 References 2 3 Definitions . 3 4 Requirements 4.1 Pe
26、rmeation 4 4.2 Materials . 4 4.3 Tubing 5 5 Verification 5.1 General . 7 5.2 Tests for Qualification of Materials and Processes . 7 5.3 Tests for Product Quality Control . 8 5.4 Nonconformance 8 5.5 Quality Control Records . 8 5.6 Plant Inspection by the Purchaser 8 6 Delivery 6.1 Marking 9 6.2 Ship
27、ping and Delivery . 9 6.3 Affidavit of Compliance 9 Appendixes A Design and Installation of Crosslinked Polyethylene (PEX) Tubing in Accordance With ANSI/AWWA C904 A.1 Introduction and Scope . 11 A.2 Material Properties 11 A.3 Design . 19 A.4 Installation 24 A.5 Operations and Repairs . 31 A.6 Sampl
28、e Specifications 32 A.7 References . 33 Copyright 2016 American Water Works Association. All Rights Reserved. vi B Bibliography of Sources for Additional Information Regarding Permeation of Polyolefin Tubing 37 Tables F.1 Hydrostatic Design Basis and Hydrostatic Design Stress for PE X Tubing . ix 1
29、HDS, HDB, and Pressure Class of SDR9 PEX Plastic Tubing for Water at 73F (23C) . 5 2 Outside Diameters and Tolerances for SDR9 PEX Tubing 6 3 Sustained Water Pressure Test Condition for SDR9 PEX Plastic Tubing 7 4 Burst-Pressure Requirements for Water at 73F (23C) for SDR9 PEX Plastic Tubing . 7 A.1
30、 Outside Diameter, Tolerance, and Wall Thickness for SDR9 PEX Tubing (CTS) 16 A.2 Average Inside Diameters for SDR9 PEX Tubing (CTS) . 16 A.3 Pressure Loss and Velocity Versus Flow Rate for PEX Plumbing Tubing (CTS) 17 A.4 Temperature Compensation Multipliers, F T21 A.5 Representative Equivalent Tub
31、e Length of Various Tubing Components 23 A.6 Minimum Recommended Bending Radii . 24 SEC. PAGE SEC. PAGE Copyright 2016 American Water Works Association. All Rights Reserved. vii Foreword This foreword is for information only and is not a part of ANSI*/AWWA C904. I. Introduction. I.A. Background. Thi
32、s standard describes crosslinked polyethylene (PEX) pressure tubing for use primarily as potable service lines in the construction of underground water distribution systems. This standard describes tubing made with a materials designation code of PEX 1306, or higher, according to ASTM F876. This sta
33、ndard describes tubing in nominal dimensions in. (13 mm) through 3 in. (76 mm) with a standard dimension ratio of 9 (SDR9) and pressure class of 160 psi. I.B. History. On June 18, 2002, the American Water Works Association (AWWA) Committee on Polyolefin Pressure Pipe and Fittings was approached to d
34、evelop a standard describing PEX for water service applications. On June 15, 2004, the polyolefin committee unanimously approved and authorized the development of a new standard for PEX, in. (13 mm) through 3 in. (76 mm), for water service. A new PEX subcommittee was also formed at this time to begi
35、n development of this standard within AWWA. The first edition was approved by the AWWA Board of Directors on June 11, 2006. This edition was approved on Jan. 16, 2016. I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium
36、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 included the Water Research Foundation (formerly AwwaRF) and the Conference of State Health and E
37、nvironmental 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 individual states. Local agencie
38、s may choose to impose requirements more stringent than those required by the state. To evaluate the health * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. Water Research Foundatio
39、n, 6666 West Quincy Avenue, Denver, CO 80235. Persons outside the United States should contact the appropriate authority having jurisdiction. Copyright 2016 American Water Works Association. All Rights Reserved. viii effects of products and drinking water additives from such products, state and loca
40、l 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 developed under the direction of NSF: NSF*/ANSI 60 Drinking Water Treat
41、ment 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 the state or local agency. Various certification organizations may
42、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 jurisdictions. Accreditation of certi- fication organizations may vary from jurisdiction to jurisdiction. Annex A, “T
43、oxicology Review and Evaluation Procedures,” to NSF/ANSI 61, does not stipulate a maximum allowable level (MAL) of a contaminant level (MCL). The MALs of an unspecified list of “unregulated contaminants” are based on toxicity test- ing guidelines (noncarcinogens) and risk characterization methodolog
44、y (carcinogens). Use of Annex A procedures may not always be identical, depending on the certifier. Users of this standard should consult the appropriate state or local agency having jurisdiction in order to: 1. Determine regulatory requirements, including applicable standards related to compounds a
45、nd chemicals that are regulated as a matter of public health. 2. Determine the status of certifications by parties offering to certify products for contact with, or treatment of, drinking water. 3. Determine current information on product certification. II. Special Issues. AWWAs “Committee ReportDes
46、ign and Installation of Cross-Linked Polyethylene (PEX) Pipe in Accordance With AWWA C904” was developed and approved by the AWWA Standards Committee on Polyolefin Pressure Pipe and Fittings, and was published in the March 2012 Journal AWWA. Certain details previously contained in this section (tubi
47、ng selection, surge pressure, temperature effects, external loads) are now in this committee report. The full committee report is * NSF International, 789 North Dixboro Road, Ann Arbor, MI 48105. Both publications are available from National Academy of Sciences, 500 Fifth Street, NW, Washington, DC
48、20001. Copyright 2016 American Water Works Association. All Rights Reserved. ix now included in this standard as appendix A and will be included until such time as a manual of practice is developed to cover this information. II.A. Design Criteria. II.A.1. Hydrostatic design stress. For PEX materials covered by this standard, the value of the hydrostatic design stress (hydrostatic design basis HDB multiplied by the design factor DF, which in this standard is 0.5) is given in Table F.1. This value is for servic
