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1-1/4 in. IPS Poly DR 11 to 1-1/4 in. MIP Underground Yellow Poly Gas Transition

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  • Use to transition from MDPE poly gas pipe to metal pipe
  • Constructed of a light material to install and remove with ease
  • Requires HOME-FLEX Underground fittings to connect pipe
  • View More Details
Free & Easy Returns In Store or Online
Return this item within 90 days of purchase. Read Return Policy

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 IPS size Yellow Poly Gas Pipe Transition Fitting allows you to transition from MDPE Yellow Poly Gas Pipe to metal pipe. One end of this Transition Fitting is IPS poly gas pipe that will connect to your run of poly pipe using one of the HOME-FLEX Underground fittings such as the Coupler, Tee or Elbow. The other end of this Transition Fitting has steel male pipe threads that you can use to couple to metal gas pipe. Be sure to use an appropriate thread sealant on the pipe threads.
  • Requires the HOME-FLEX Underground coupler to connect to your run of yellow poly gas pipe
  • Durable polyethylene construction to last for years to come
  • Epoxy coated
  • Standard MIP threads
  • Purpose-built for direct burial outside underground use only in accordance with your local plumbing / building codes.
  • This transition fitting should be horizontal in the trench connected to the PE pipe. It should not be used with an elbow in a vertical position as a make-shift riser as yellow PE pipe should always be at or below code-mandated burial levels.
  • HOME-FLEX Underground pipe and fittings should NEVER be used in a building and should NEVER be used under a foundation with a structure on it.
  • IAPMO UPC certified to ASTM F1973
  • NOT for use with HOME-FLEX (and others) CSST products (corrugated stainless steel tubing).
  • Visit homeflexunderground.com / resources to view our System Design & Installation Manual and FAQs
  • Visit the HOME-FLEX Underground Collection to view all products and accessories to complete your project
  • View our HOME-FLEX Underground Bundles to buy everything you need to complete your project at a discount
  • Return Policy



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.)19.5 inSingle Fitting Size1-1/4"


ApplicationNatural Gas, PropaneColor FamilyYellow
Color/FinishYellowCompatible Pipe MaterialPolyethylene
Connection 1Plain EndConnection 2MPT
ConnectivityThreadedFeaturesThreaded, Underground Rated, Underground Use
Fitting or Connector TypeAdapterFitting/ Connector CollectionPolyethylene
MaterialPolyethyleneMaximum working pressure (psi)90
Maximum Working Temperature (F)140Pack Size1
Pipe or Fitting Product TypeFittings & ConnectorsProduct Weight (lb.)1.5 lb
Reducing FittingNoReturnable90-Day

Warranty / Certifications

Manufacturer Warranty1 year

Questions & Answers

Q:Can this be fused
by|May 25, 2023
1 Answer
Answer This Question

A:  Hi, Jose - Yes it can be fusion bonded. There's a guide available homeflex.com at https://cdn2.assets-servd.host/fixed-puma/production/HOME-FLEX-PE-Fusion-Guide-2005-A4.pdf.

by|May 26, 2023
    Q:Can this transition piece be used in place of a riser to connect to existing exterior wall gas line and to supply fireplace on other side of line.
    by|Dec 8, 2021
    2 Answers
    Answer This Question

    A:  Hi, Toro - As long as the transition piece stays completely underground at or below the code-mandated burial level AND that it is not installed under a foundation with a structure on it (or in a structure), it should be alright to use. Suggest you review our HOME-FLEX Underground System Design & Installation Manual available at homeflex.com. Or, if you have further questions and/or need advice, call me (Dave) at (661) 257-3923 x 1026 M-F 8a-2:30p.

    by|Dec 8, 2021

      A:  this is strictly for underground use to transition from poly pipe to iron pipe,

      by|May 7, 2023
      1 found this answer helpful
      Q:Do you know by what time my curbside order be ready for to go head and pick it up 
      by|Sep 15, 2021
      1 Answer
      Answer This Question

      A:  Hi, Chato - This is an individual store issue. You should contact the store where you purchased the item to ascertain when you can pick it up. Thanks.

      by|Sep 15, 2021
        Q:Is there any mention anywhere in the product literature that it is illegal to use these materials...
        by|Jun 17, 2020
        1 Answer
        Answer This Question

        A:  Hi RUKidding. I invite you to read our HOME-FLEX Underground System Design and Installation Manual. Here is a link that you can copy and paste into your browser to find our manual online. http://homeflex.com/downloads/HOME-FLEX_Underground_Manual.pdf If I can help to answer additional questions please give me a call. (661) 257-3923 Ask for Jon. I am here from 8-5 Los Angeles time M-F

        by|Jun 22, 2020
          Showing 1-4 of 26

          Customer Reviews

          4.5 out of 5
          • 4.5
            out of 110 reviews
          • 94% recommend this product
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          Showing 1-10 of 110 reviews
              No leaks and went together easy
                Delivered early and exactly as described
                • Verified Purchase
                • Verified Purchase
                • Verified Purchase
                • Verified Purchase
                easy to install and strong less tight elbows so gas...
                easy to install and strong less tight elbows so gas has less pressure restrictions
                • Verified Purchase
                The material worked well and code approved. Priced less then...
                The material worked well and code approved. Priced less then the local plumbing distributor.
                • Verified Purchase
                • Verified Purchase
                Showing 1-10 of 110 reviews

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