Nipples
What is a Schedule 40 Pipe Nipple?
These Schedule 40 pipe nipples meet or exceeds ASTM and ANSI Standards. We stock them from 1/8" through 6" diameters and are available in lengths up to 60 inches. For galvanized or black pipe applications include air, natural gas, non-potable water, oil and steam. These class 150 galvanized nipples are extremely rust-resistant due to their zinc-coated steel.Because of this, they are mainly used for outdoor and industrial applications. They can withstand tough weather conditions. Black pipe is not used outdoors.
A Schedule 40 galvanized pipe nipple is a short length of galvanized or black steel pipe that is threaded on both ends and used to connect two female-threaded fittings or devices together.
Its main purposes are to:
- Extend a piping run
- Join two fittings
- Create spacing between components
Breaking Down the Name Schedule 40 and Characteristics
- Refers to the wall thickness of the pipe
- Strong enough for typical plumbing, gas, and mechanical applications
- Nipple
- Threaded on both ends (male threads)
What It’s Commonly Used For
- Connecting two threaded fittings (like elbows, tees, couplings, valves)
- Extending pipe out of a wall or floor
- Spacing valves or fixtures away from a fitting
- Water supply piping (where permitted by code)
- Light-duty industrial and mechanical systems
Simple Example
You have a tee and need to install a ball valve onto it.
A pipe nipple screws into the tee, and the valve screws onto the nipple.
Important Notes
Many modern systems prefer copper, PEX, or CPVC for domestic water due to better long-term performance
Galvanized and black pipe is still common in repairs, mechanical rooms, and older buildings
Always use thread sealant or PTFE tape on threads
In Plain English
A Schedule 40 pipe nipple is used as a short connector piece that joins threaded parts together and helps position components exactly where you need them.