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Internet # 100167406

Model # 521-703HN

Store SKU # 103713

1/2 in. Black Malleable Iron FPT x FPT Union Fitting

$10.57
  • Applications include oil, gas, LP gasses and decorative projects
  • UL and FM listings certify fitting meets top industry standards
  • Fittings connect with all NPT nipples and pipe of matching size
  • View More Details
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Product Details

About This Product

Southland offers one of the most extensive selections of black and galvanized malleable iron fittings in the industry. Our malleable fittings are available in 13 different diameters ranging from 1/8 in. up to 6 in. and each fitting is produced to exact industry specifications. All of our malleable iron fittings undergo rigorous testing to meet the quality standards you've come to expect from our B&K product lines.

Highlights

  • Our black malleable iron fittings are leak proof tested and threads are precisely machine tooled for easy connections to natural gas, propane, oil and air applications
  • Threads meet ANSI/ASME B1. 20.1 specification and 150 class ANSI/ASME B 16.3 dimensions
  • 150 class malleable iron pipe
  • Union joins 2 lengths of pipe which permits future disconnection of each without cutting or turning pipe or to make final assembly of components
  • Malleable iron fittings and pipe are used in a multitude of DIY applications creating an industrial look for any home
  • Black iron fittings are not used for potable water applications
  • Meets ASTM and ASME standards
  • Note: product may vary by store
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 100167406

Model # 521-703HN

Store SKU # 103713

Additional Resources

Shop All Southland

Specifications

Dimensions

Double Fitting Size

1/2" x 1/2"

Fitting 1 size

1/2"

Fitting 2 size

1/2"

Fitting Size Dimensions

1/2" x 1/2"

Product Length (in.)

2 in

Single Fitting Size

1/2"

Details

Application

Oil

Color Family

Black

Color/Finish

Black

Compatible Pipe Material

Steel

Connection 1

FIP

Connection 2

FIP

Connectivity

Threaded

Features

Threaded

Fitting or Connector Type

Union

Fitting/ Connector Collection

Black

Material

Iron

Maximum working pressure (psi)

300

Maximum Working Temperature (F)

350

Pack Size

1

Pipe or Fitting Product Type

Fittings & Connectors

Product Weight (lb.)

0.44 lb

Reducing Fitting

No

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

1 year

Questions & Answers

9Questions
caret
Q:Can this be used outdoor above ground?
by|Feb 6, 2023
2 Answers
Answer This Question

A:  You'll need to paint it to protect it from corrosion but yes it can be used outdoor when properly protected.

by|Sep 25, 2023

    A:  HI John, this can be used above-ground, however it needs to be protected from the elements. We recommend checking local plumbing codes to ensure your project remains leak-proof and long lasting. We hope this helps with your project.

    by|Feb 6, 2023
      caret
      Q:is this fitting compatible with stainless steel?
      by|Dec 19, 2022
      1 Answer
      Answer This Question

      A:  Hello Michael, if the stainless steel pipe meets the ANSI B1.20.1 connection standard, it will connect with this union. We recommend checking local plumbing codes for guidance on your project to ensure the proper materials are used. We hope this helps with your project.

      by|Dec 19, 2022
        caret
        Q:Will it bend?
        by|Jul 8, 2022
        2 Answers
        Answer This Question

        A:  It's iron so if you heat it hot enough it will bend, but otherwise it's pretty rigid and you can tighten a lot. Chances are this would crack before it bends but that would take an insane amount of over tightening.

        by|Sep 25, 2023

          A:  Hello TomL, without knowing all project specifics, it is difficult for us to say if the union will cause a sag or not. It might be worth seeing if The Home Depot has any type of brackets to support the union while allowing the curtains to fully close. We hope this helps with your project.

          by|Jul 11, 2022
            caret
            Q:What is the approximate amount of space that the 1/2 joiner will take up when joining two black pipes together, or in other words what is the gap supposed to be between the two pipes being joined.
            by|Mar 19, 2022
            3 Answers
            Answer This Question

            A:  Depends on how much you tighten it, I allow 1 3/8" but it could go as low as 1 1/4" or high as 1 1/2" but you should have way more than 1/8" tolerance always because of expansion and contraction.

            by|Sep 25, 2023

              A:  Hi DCBA, you will have approximately 1/5-in on each side to thread onto your pipes, which gives approximately a gap of 1-1/4-in. We hope this helps with your project.

              by|Mar 21, 2022

                A:  They indicate the product length is 2" inches. Take off a 1/4 inch for each side the pipes threads into. So you should account for a inch and a half gap in you measurement.

                by|Mar 22, 2022
                  1 found this answer helpful
                  Showing 1-4 of 9

                  Customer Reviews

                  4.8 out of 5

                  • 4.8 out of 122 reviews
                  • 88% recommend this product
                  Filter by:
                  Showing 1-10 of 122 reviews
                  Work as expected. Easy install. No leaks.
                  by
                  • Verified Purchase
                  This union threaded very easy onto the old black pipe....
                  This union threaded very easy onto the old black pipe.
                  by
                  • Verified Purchase
                  Did what it was supposed to. Threads were clean, and sealed up nicely.
                  Did what it was supposed to. Threads were clean, and sealed up nicely.
                  by
                  • DIY
                  • Verified Purchase
                  • Recommended
                  good price and quality.
                  by
                  • Verified Purchase
                  fixed water heater and to be sure of old union I replaced them
                  by
                  • Verified Purchase
                  by
                  • Verified Purchase
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                  • Verified Purchase
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                  • Verified Purchase
                  by
                  • Verified Purchase
                  i ❤️ union
                  These things are life savers, for 15$ thi ill buy a mega press coupling
                  by
                    • Recommended
                    Showing 1-10 of 122 reviews

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