How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Low-Pressure Iron and Steel Threaded Pipe Fittings
Use these fittings for low-pressure applications in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Class:
Steel: 150
Iron: 125 - Pipe Nipples and Pipe: Use Schedule 40 steel
| Pipe Size | Plug Construction | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Male | ||||||
|---|---|---|---|---|---|---|
| 1/8 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Steel | 000000000 | 00000 |
| 1/4 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Steel | 000000000 | 000 |
| 3/8 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Steel | 000000000 | 000 |
| 1/2 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Steel | 000000000 | 000 |
| 3/4 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Steel | 000000000 | 000 |
| 1 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Steel | 000000000 | 0000 |
| 1 1/4 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Steel | 000000000 | 0000 |
| 1 1/2 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Steel | 000000000 | 00000 |
| 2 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Steel | 000000000 | 00000 |
Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings
The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Class: 150
- Specifications Met: SAE J531
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Flanges: Use Class 150 galvanized steel
| Pipe Size | Plug Construction | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Male | ||||||
|---|---|---|---|---|---|---|
| 1/8 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Steel | 00000000 | 00000 |
| 1/4 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Steel | 00000000 | 000 |
| 3/8 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Steel | 00000000 | 000 |
| 1/2 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Steel | 00000000 | 000 |
| 3/4 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Steel | 00000000 | 000 |
| 1 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Steel | 00000000 | 0000 |
| 1 1/4 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Steel | 00000000 | 0000 |
| 1 1/2 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Steel | 00000000 | 00000 |
| 2 | Solid | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Steel | 00000000 | 00000 |
Low-Pressure Galvanized Steel
Threaded Pipe Fittings with Sealant
The male threads on these fittings have a sealant applied for extra leak protection. Fittings are made of galvanized steel, which has fair corrosion resistance. Also known as Class 150 fittings, they are for use in low-pressure applications.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Class: 150
- Specifications Met: SAE J531
- Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
- Flanges: Use Class 150 galvanized steel
| Pipe Size | Plug Construction | Max. Pressure | Max. Steam Pressure | Each | |
NPTF Male | |||||
|---|---|---|---|---|---|
| 1/8 | Solid | 150 psi @ 72° F | 150 psi @ 360° F | 0000000 | 00000 |
| 1/4 | Solid | 150 psi @ 72° F | 150 psi @ 360° F | 0000000 | 000 |
| 3/8 | Solid | 150 psi @ 72° F | 150 psi @ 360° F | 0000000 | 000 |
| 1/2 | Solid | 150 psi @ 72° F | 150 psi @ 360° F | 0000000 | 000 |
| 3/4 | Solid | 150 psi @ 72° F | 150 psi @ 360° F | 0000000 | 000 |
| 1 | Solid | 150 psi @ 72° F | 150 psi @ 360° F | 0000000 | 0000 |