3 BLACK COUP
3 BLACK COUP
BCU-3
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Regular price
$26.05
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$26.05
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3" Black Coupling (3 BLACK COUP)
This is a standard threaded pipe coupling used for black steel (black iron) pipe systems.
What it is
A black steel pipe coupling:
- Has female internal NPT threads on both ends
- Connects two 3" male-threaded black steel pipes
- “Black” refers to uncoated black iron steel pipe fittings (no galvanizing)
What it does
- Joins two sections of 3" black steel pipe
- Extends a piping run in a straight line
- Creates a tight, threaded, leak-resistant connection
Key features
- Material: black steel (uncoated carbon steel)
- Connection type: female threaded both ends (NPT)
- Design: straight coupling (same size both ends)
- Used in non-galvanized piping systems
Common applications
- Natural gas and fuel gas piping
- Air lines and mechanical systems
- Fire sprinkler systems (in some configurations)
- Industrial piping and structural systems

3 BLACK COUP
$26.05