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 Stainless Steel Threaded Pipe Fittings
Use these fittings in a low-pressure pipe line. 304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Female x male 90° elbow adapters are also known as street elbows.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Fabrication: Heat Treated
- Specifications Met: ASTM A351
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
- Flanges: Use Class 150 stainless steel
304 Stainless Steel | 316 Stainless Steel | |||||
|---|---|---|---|---|---|---|
| Pipe Size  | Max. Pressure | Max. Steam Pressure | Each | Each | ||
NPT Female × NPT Male | ||||||
| 1/8 | 300 psi @ 72° F | 150 psi @ 350° F | 000000 | 00 | 00000000 | 000000 |
| 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 000000 | 00000000 | 00000 |
| 3/8 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 3/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 000000 | 00000000 | 000000 |
| 1 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 000000 | 00000000 | 000000 |
| 2 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 000000 | 00000000 | 000000 |
Medium-Pressure Iron and Steel Threaded Pipe Fittings
With better strength than our low-pressure iron and steel pipe fittings, these can handle medium-pressure applications. They are for use in noncorrosive environments.
Union connectors separate into three pieces so you can access your line without unthreading pipe connections.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.39, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel