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Design Guide - Residential PEX Water Supply Plumbing Systems

November 2006     

PEX Design Guide CoverThis Design Guide provides the information and resources necessary to design and install cross-linked polyethylene (PEX) water supply systems in residential buildings. It includes comprehensive design concepts and installation guidelines to increase the acceptance and proper use of PEX. This document is targeted to meet the needs of home builders, designers, and trade contractors. Its purpose is to introduce potential users and to enable current users to optimize their PEX plumbing and minimize system costs. In addition, it will allow code inspectors and homeowners to become familiar with the applications, performance characteristics, and benefits of PEX water supply systems.

The Design Guide PDF is available for free. Users may also purchase a printed copy from the PPI website. Printed copies are $6 plus shipping & handling in the U.S. Expedited shipping in the U.S., and shipping to international locations available; prices determined during the checkout process.

Prepared for:
Plastics Pipe Institute, Inc (PPI)
105 Decker Court
Suite 825
Irving, TX 75062


Plastic Pipe and Fittings Association (PPFA)
800 Roosevelt Road, Bldg. C, Ste. 312
Glen Ellyn, IL 60137


U.S. Department of Housing and Urban Development
451 7th Street, SW
Washington, DC 20410

Prepared by:
NAHB Research Center, Inc.
400 Prince George’s Boulevard
Upper Marlboro, MD 20774

128 pages