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1-1/4 in. IPS DR 11 Underground Yellow Poly Gas Pipe Coupler

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  • For use with Natural Gas and Liquid Propane applications
  • Only compatible with IPS sized, polyethylene pipe
  • The only underground gas compression fitting on the market
  • View More Details
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Product Details

Home Flex Underground Fitting - Expanded View

Revolutionary Compression Design

The unique compression design makes it the easiest underground gas fitting on the market. No special tools or skills required.

Home Flex Underground Lifestyle

Easy Install Of Underground Gas Lines

With HOME-FLEX UNDERGROUND, just cut your pipe and insert the included stiffener. There’s no need to chamfer the pipe, only smooth away any burrs and then tighten the nuts.

HOME-FLEX Underground Coupler

Connect Pipe With Ease

Easily connect runs of pipe to another pipe run, a meter riser, or transition fitting with our one-of-a-kind fittings.

HOME-FLEX Underground Elbow

Make 90 Degree Turns Without Special Tools

It is simple to change the direction of your pipe run with our different fitting options.

HOME-FLEX Underground Tee

Easily Add To Your Pipe System

With the ability to remove and reuse the fittings again and again, you can add a tee and make a new line whenever you want.

HOME-FLEX Underground Pipe

Lightweight, Durable, And Never Rusts

This MDPE pipe is easier to use than standard steel pipe, and the polyethylene construction will never rust.

Easy Installation

Simple Installation

Easy to follow steps and a simple compression design makes install a breeze.

Quick Installation

Save Time And Money

Quickly install yourself with no need to purchase professional tools or services.


Reuse The Same Supplies

When changing the location or adding to a line, just remove and reinstall.

Rated for 125 PSI

Exceeds PSI Standards

Use with confidence knowing the products are made to withstand high PSI ratings.

IPS Sized

Iron Pipe Size Measurements

All pipe and fittings are IPS (Iron Pipe Size) and are fully compatible with other IPS polyethylene pipe.

Direct Burial

Direct Burial Permitted

These gas pipe and fittings are approved for underground application.

The HOME-FLEX Underground in. Pipe Coupler allows you to safely and easily connect two pieces of polyethylene gas piping. Simply cut the pipe, slide in the provided stiffener and slide into the fitting and tighten down. No special tools necessary.



Double Fitting Size1-1/4" x 1-1/4"Fitting 1 size1-1/4"
Fitting 2 size1-1/4"Fitting Size Dimensions1-1/4" x 1-1/4"
Product Length (in.)6 inSingle Fitting Size1-1/4"


ApplicationNatural Gas, PropaneColor FamilyYellow
Color/FinishYellowCompatible Pipe MaterialPolyethylene
Connection 1CompConnection 2Comp
ConnectivityCompressionFeaturesUnderground Rated
Fitting or Connector TypeCouplingFitting/ Connector CollectionPolyethylene
MaterialPolypropyleneMaximum working pressure (psi)125
Maximum Working Temperature (F)140Pack Size1
Pipe or Fitting Product TypeFittings & ConnectorsProduct Weight (lb.).93 lb
Reducing FittingNoReturnable90-Day

Warranty / Certifications

Manufacturer WarrantyI year

Questions & Answers

Q:i have 2 SDR11 pipe that has an outside diameter of 2.375 will this work on my pipe?
by|Nov 15, 2023
1 Answer
Answer This Question

A:  No. this fitting is for 3/4 id pipe which would have an outside diameter of appr 1 1/4inch

by|Dec 1, 2023
    Q:My gas line is ORANGE and is 1-1/8 in actual diameter. Will your product work with this, or is only to be used by yellow pipe.
    by|Nov 11, 2023
    1 Answer
    Answer This Question

    A:  Sorry KenP. More information is needed to answer your question. HOME-FLEX Underground fittings are only for use on IPS sized D2513 pipe. Hopefully your "Orange" gas pipe will have identification markings on it that will let you know exactly what it is. Only then will you be able to select appropriate gas fittings for it.

    by|Nov 13, 2023
      Q:Is it a good alternative to repair or replace a corroded galvanized pipe on the house gas line connected next to the gas meter and main gas line?
      by|Aug 13, 2023
      1 Answer
      Answer This Question

      A:  Hi, DIYuser - You'll not want to use any Underground gas components above ground. They're certified for underground use only and never under a foundation with a structure on it.

      by|Nov 4, 2023
        1 found this answer helpful
        Q:Does this come with the stiffeners as shown in the video?
        by|Jun 29, 2023
        1 Answer
        Answer This Question

        A:  Hi, Khow - Yes, stiffeners are included with each HOME-FLEX Underground fitting.

        by|Jun 29, 2023
          Showing 1-4 of 37

          Customer Reviews

          4.5 out of 5
          • 4.5
            out of 268 reviews
          • 73% recommend this product
          Filter by:
          Showing 1-10 of 268 reviews
          Easy to install however a little confusing in depth after tightening nuts.
          • Verified Purchase
          • Recommended
          Very easy to use and fast installation. No need to bevel the edge.
          Very easy to use and fast installation. No need to bevel the edge.
          • Verified Purchase
          • Recommended
          This poly pipe system is great for installing underground propane piping. No need to join many le...
          This poly pipe system is great for installing underground propane piping. No need to join many lengths like with iron pipe. No need to dig straight trenches, we could curve it around obstacles. The riser elbows made the into and out of the ground ends easy.
          • Verified Purchase
          • Recommended
          2 found this review helpful
          You really need to fuss with this thing to get it to hold pressure. I installed 2 lines, one had ...
          You really need to fuss with this thing to get it to hold pressure. I installed 2 lines, one had a large leak that i eventually fixed with reseating the couplings, one had a very slow leak that i never got fixed. I verified that all other pipe fittings had no leak so it must have been these. I was hoping for an easy no brainer fitting, I don't think this one is it.
          Response from VPC, Home-Flex ExpertAug 14, 2017
          Hi Ironcore, Thank you for your feedback. We rely on this type of feedback coming in from the field in order to learn more about how and where our products are being used and what types of improvements we should make. I am surprised to hear that you had to "fuss with" the fitting to get a leak free installation. I am very interested in hearing more about your installation. Were our instructions easy for you to follow step by step? Did you fully tighten the fitting by hand and snug it with your pliers? Did you use the supplied insert? If possible, could you give us a call here at HOME-FLEX and provide some additional information? We are here M-F from 8-5 Pacific time. Our number is 661-257-3923. Ask for Jon ValenciaPipe
            3 found this review helpful
            Excellent material and customer service
                        Showing 1-10 of 268 reviews

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