Installation Guide

Chapter 1: Introduction
This side of the HOME-FLEX® manual applies to HOME-FLEX
TM
Underground pipe and
its
asso-ciated plastic fittings. HOME-FLEX® CSST and HOME-FLEX
TM
Underground are two
different systems with different uses and installation requirements. The tubing and
fittings are not interchangeable.
HOME-FLEX Underground pipe is made of a yellow poly plastic all the way through. It has a
smooth outside wall and a smooth inside wall. The fittings are made of plastic. HOME-
FLEX Underground gas pipe and fittings are for use with natural gas and LP (propane) gas.
This poly gas pipe must be installed outdoors and underground only. The plastic pipe may
never be used above ground, in a building or under a building.
1.1 Introduction
HOME-FLEX® CSST and HOME-FLEX
TM
Underground are two different systems with
different uses and installation requirements. The tubing and fittings are not
interchangeable.
An installer must be aware of all of the HOME-FLEX Underground installation instructions
and knowledgeable in all applicable plumbing and building codes. HOME-FLEX
Underground installation practices and guidelines are found in this manual,
packaged with each HOME-FLEX Underground fitting and on the HOME-FLEX
Underground website, homeflexunderground.com.
HOME-FLEX Underground gas pipe is Medium Density Polyethylene (MDPE) gas pipe. It is
also referred to as PE or poly gas pipe. It is made in accordance with the ASTM D2513 stan-
dard. It is approved for direct burial into the ground in accordance with the local
plumbing code at the installation location. It is flexible, lightweight, easy to work with
and easy to install. Unlike metallic gas pipe, it will not rust or corrode when properly
installed. HOME-FLEX Underground PE gas pipe is iron pipe size (IPS). It is approved for
use with Natural Gas or LP gas. It is never to be installed in a building or house. It is never
to be installed under a building or house. It is never to be installed above grade.
HOME-FLEX Underground fittings are approved for direct burial. They can be installed
without the need for special tools or equipment. HOME-FLEX Underground fittings are
constructed of plastic and they are a compression type fitting. Once installed, they can be
removed and reinstalled as long as they have not been damaged in any way.
HOME-FLEX Underground couplers, elbows and tees are approved to the ASTM F1924 and
D2513 standard. They may be used with any brand of properly sized ASTM D2513 Yellow
Poly Gas Pipe. These fittings are sized for IPS Poly Gas Pipe in ½” (SDR 9.3), ¾” (SDR 11),
1” (SDR 11), 1¼” (SDR 11), 1½” (SDR 11) and 2” (SDR 11) diameters. They are approved for
use with Natural Gas or LP Gas. You must verify that your local jurisdiction allows the use
of F1924 fittings prior to performing your installation. The Transition Fittings and Risers are
approved to ASTM F1973. HOME-FLEX Underground gas pipe is approved ASTM D2513.
registration, you are affirming that you understand all a
requirements and local
HOME-FLEX Underground 3
The HOME-FLEX
TM
Underground Gas Distribution System must be installed by a trained
installer who meets the following critteria:
1. Installer must meet all qualifications required by the state and/or local
administrative authority administering the provisions of the code where the gas
piping is installed.
2. An installer must also be informed in the use of HOME-FLEX
TM
Underground Gas
Distribution System. Information regarding IPEX USA LLC’s HOME-FLEX
TM
Underground Gas system can be obtained by reading the HOME-FLEX
TM
Underground Gas Distribution System Installation/Training Guide and registering
with IPEX USA LLC. To obtain a Registered Installer Card, register online at
homeflexunderground.com. In submitting the online registration, you are affirming
that you understand all aspects of the installation requirements and local