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DESIGN GUIDE Residential PEX Water Supply Plumbing Systems

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DESIGN GUIDE Residential PEX Water Supply Plumbing Systems DESIGN GUIDE Residential PEX Water Supply Plumbing Systems Prepared for Plastics Pipe Institute, Inc (PPI) 105 Decker Court Suite 825 Irving, TX 75062 www.plasticpipe.org and Plastic Pipe and Fittings Association (PPFA) 800 Roosevelt Road, Bldg. C, Ste. 312 Glen Ellyn, IL 60137 www.ppfahome.org and Partnership for Advancing Technology in Housing 451 7th Street, SW Washington, DC 20410 www.pathnet.org Prepared by NAHB Research Center, Inc. 400 Prince George’s Boulevard Upper Marlboro, MD 20774 www.nahbrc.org November 2006 This document was developed as the result of a consensus process involving the Plastic Pipe Institute, the Plastic and Plastic Pipe and Fitting Association, and representatives from numerous piping and fitting manufacturers. It was prepared by the NAHB Research Center, with support and research from the Partnership for Advancing Technology in Housing (PATH). Acknowledgements We would like to thank the following principal contributors to this Guide: Plastic Pipe and Fittings Association Glen Ellyn, Illinois Richard Church, Mike Cudahy Plastics Pipe Institute Irving, Texas Camille Rubeiz Rehau Inc. Leesburg, Virginia Lance MacNevin Uponor Copyright Apple Valley, Minnesota Copyright © 2006 NAHB Research Center, Randy Knapp Inc., Plastics Pipe Institute, Plastic Pipe and Vanguard Piping Systems Fittings Association. All rights reserved. McPherson, Kansas Gary Morgan Disclaimer Viega Neither the NAHB Research Center, Wichita, Kansas Inc, the Plastics Pipe Institute, the Plastic Christina Smith Pipe and Fitting Association, the U.S. Department of Housing and Urban WattsRadiant Development, nor any person acting in Springfield, Missouri its behalf, makes any warranty, express Chris Haldiman or implied, with respect to the use of any information, apparatus, method, or process Zurn Plumbing Products Group disclosed in this publication or that such use Commerce, Texas may not infringe privately owned rights, or Gary Runyan assumes any liabilities with respect to the use of, or for damages resulting from the Department of Housing and Urban use of, any information, apparatus, method, Development (HUD) or process disclosed in this publication, Washington D.C. or is responsible for statements made or Dana Bres opinions expressed by individual authors. NAHB Research Center Upper Marlboro, Maryland For Further Information: Robert Fuller, Michael Grothe, Megan Inouye, Shawn Martin, Joseph Wiehagen. Anne Holtz and Please consult the following websites for Kim Warren for editorial review, and Edith Crane the latest version of this publication. and Pam Eggleston for layout and design. Plastics Pipe Institute We would also like to acknowledge the support http://www.plasticpipe.org/ of the Partnership for Advancing Technology in Plastic Pipe and Fittings Association Housing (PATH) and the material support of the http://www.ppfahome.org/ Delta Faucet Company. ToolBase.org http://www.toolbase.org/ Table of Contents Chapter 1 – INTRODUCTION ............................. 1 Objective .......................................................................................................1 Background ...................................................................................................1 Applications...................................................................................................3 How to Use the Design Guide.................................................................3 Chapter 2 – ADVANTAGES.................................. 5 Ease of Installation.......................................................................................5 Durability .......................................................................................................5 Cost Effectiveness .......................................................................................5 Energy Efficiency..........................................................................................5 Noise Reduction ..........................................................................................6 Water Conservation...................................................................................6 Environmentally Sound...............................................................................6 Chapter 3 – MATERIAL PROPERTIES ................ 7 Temperature and Pressure ........................................................................8 Flexibility........................................................................................................8 Noise and Water Hammer Resistance...................................................8 Resistance to Freeze Damage...................................................................9 Chlorine Resistance ....................................................................................9 Corrosion Resistance .............................................................................. 10 Ultraviolet (UV) Resistance ................................................................... 10 Inert Material – Safe for Drinking Water ............................................11 PEX Piping Dimensions and Flow Characteristics.............................11 Chapter 4 – CODE ACCEPTANCE ................... 15 International Residential Code (IRC-2003).........................................15 International Plumbing Code (IPC 2003).............................................16 National Standard Plumbing Code (NSPC 2003) ..............................17 Uniform Plumbing Code (UPC-2003)...................................................17 International Code Council (ICC) Evaluation Service Reports (ESR) and Evaluation Reports (ER)....................................................17 International Association of Plumbing and Mechanical Officials (IAPMO) Guide Criteria ..................................................................... 18 C904-06 American Waterworks Association (ANSI/AWWA C904-06)................................................................................................. 18 Chapter 5 – JOINING METHODS ..................... 19 Cold Expansion Fittings with PEX Reinforced Rings ...................... 20 Cold Expansion Fittings with Metal Compression Sleeves ........... 20 Metal or Plastic Insert Fittings................................................................21 Copper Crimp Ring...............................................................................21 Stainless Steel Clamp ........................................................................... 22 Stainless Steel Sleeve............................................................................ 22 Push Type Fittings..................................................................................... 23 Standard Specifications for Fittings...................................................... 24 ASTM F 1807: Standard Specification for Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-Linked Polyethylene (PEX) Tubing ............................................................ 24 ASTM F 1960: Standard Specification for Cold Expansion Fittings with PEX Reinforcing Rings for Use with Cross- Linked Polyethylene (PEX) Tubing ............................................... 24 ASTM F 2080: Standard Specification for Cold Expansion Fittings with Metal Compression Sleeves for Use with PEX Pipe .............................................................................................. 24 ASTM F 2098: Standard Specification for Stainless Steel Clamps for Securing SDR9 Cross-Linked Polyethylene (PEX) Tubing to Metal Insert Fittings ...................................................... 24 ASTM F 2159: Standard Specification for Plastic Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-Linked Polyethylene (PEX) Tubing ............................................................ 25 ASTM F 2434: Standard Specification for Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 PEX Tubing and SDR9 PEX-AL-PEX Tubing.............................................................. 25 IAPMO – IGC 188: Removable and Non-Removable Push Fit Fittings.................................................................................................. 25 ASSE Standard – 1061.......................................................................... 25 Chapter 6 – TYPES OF PEX PLUMBING SYSTEMS .............................................................. 27 Trunk and Branch .................................................................................... 28 Home-Run .................................................................................................. 29 Remote Manifold....................................................................................... 30 Chapter 7 – DESIGN............................................ 31 Consult Local Codes ................................................................................31 Optimize Home Designs ....................................................................... 32 Select Piping System Design................................................................... 33 General Rankings of the Systems for Key Factors ........................... 34 Example Layouts ....................................................................................... 35 Colonial Layout.................................................................................. 36 Ranch Layout...................................................................................... 39 Townhouse Layout...........................................................................
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