Midland Black Malleable Iron Reducing Coupling
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✔ Contractor-Grade Black Malleable Iron – Threaded NPT
✔ Bulk Pricing Available – Multiple Sizes In Stock
High Demand Item – Frequently Reordered by Plumbing and Gas Contractors
The Midland Black Malleable Iron Reducing Coupling is a threaded fitting used to join two sections of pipe of different sizes in a straight run. Available in multiple size combinations — select from the dropdown above.
Black malleable iron construction with female NPT threads on both ends — one larger, one smaller. Conforms to ASTM A197 and ASME B16.3.
Applications
- Joining pipes of different sizes in a straight run
- Gas piping size transitions
- Compressed air lines with pipe size changes
- General plumbing and mechanical piping
- For low-pressure applications only — not rated for high-pressure service
- Black iron finish — not suitable for outdoor or corrosive environments without additional protection
- Always verify local code compliance before installation
Key Features
- Black malleable iron — ASTM A197
- Female NPT threads — two different sizes — ASME B16.3
- Straight reducing coupling
- Multiple size combinations available
Frequently Asked Questions
What is a reducing coupling?
A coupling with two different sized female NPT ends — joins pipes of different sizes in a straight run.
What thread type?
Female NPT threads on both ends — different sizes.
Are these galvanized?
No — black iron finish.
What standards?
ASTM A197 and ASME B16.3.
Why Contractors Choose This Product
- Joins different pipe sizes in one fitting
- Eliminates need for a separate reducer
- Female NPT both ends for easy assembly
- ASTM A197 conforming
✔ Bulk Pricing Available
✔ Fast Shipping from Multiple U.S. Warehouses
✔ Built for Contractors, Not DIY