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.
Connectors with NPT threads are threaded on both ends.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASME B16.3, UL Listed, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
|---|---|---|---|---|---|
| 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 000000 |
| 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
| 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
| 1 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
| 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
| 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
| 2 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 000000 |
| 2 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 000000 |
| 3 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 000000 |
| 4 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 000000 |
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.
- Pressure Class: 150
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
- Flanges: Use Class 150 galvanized steel
| Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
|---|---|---|---|---|---|
| 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
| 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
| 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
| 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
| 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
| 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
| 2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
| 2 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
| 3 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
| 4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
Drain, Waste, and Vent Iron Pipe Fittings
Use these fittings in gravity-flow applications both above and below ground. They are also known as no-hub pipe fittings and soil pipe fittings. To connect, place the end of the fitting against your pipe or another fitting and connect with a low-pressure clamp-on connector (sold separately). The clamp-on connector is also known as a no-hub coupling. Fittings are for use in noncorrosive environments.
- For Use With: Water
- Temperature Range: 0° to 180° F
- Specifications Met: ASTM A666, ASTM C564
- For Pipe Material: Aluminum, Iron, Steel, Stainless Steel, PVC Plastic
- For Use With: Water
- Temperature Range: 0° to 180° F
- Specifications Met: ASTM A666, ASTM C564
- For Pipe Material: Aluminum, Iron, Steel, Stainless Steel, PVC Plastic
- For Tube Material: Copper
- For Use With: Water
- Temperature Range: 0° to 180° F
- Specifications Met: ASTM A666, ASTM C564
- For Pipe Material: Aluminum, Iron, Steel, Stainless Steel, PVC Plastic