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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 Aluminum Threaded Pipe Fittings
In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.
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, Oil, Water
- Pipe Nipples and Pipe: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
| Pipe Size | Max. Pressure | Each | |
NPT Female | |||
|---|---|---|---|
| 1/8 | 150 psi @ 72° F | 000000000 | 000000 |
| 1/4 | 150 psi @ 72° F | 000000000 | 00000 |
| 3/8 | 150 psi @ 72° F | 000000000 | 00000 |
| 1/2 | 150 psi @ 72° F | 000000000 | 00000 |
| 3/4 | 150 psi @ 72° F | 000000000 | 00000 |
| 1 | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/4 | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 150 psi @ 72° F | 000000000 | 00000 |
| 2 | 150 psi @ 72° F | 000000000 | 00000 |
| 2 1/2 | 150 psi @ 72° F | 000000000 | 00000 |
| 3 | 150 psi @ 72° F | 000000000 | 000000 |
| 4 | 150 psi @ 72° F | 000000000 | 000000 |
High-Pressure Aluminum Threaded Pipe Fittings
Also known as Class 3000 fittings, these have the highest pressure rating of all the aluminum pipe fittings we offer. They are lightweight with good corrosion resistance.
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, Water
- Class: 3000
- Specifications Met: ANSI/ASME B1.20.1, Fed. Spec. QQ-A-200/8, ASTM B221
- Pipe Nipples and Pipe: Use Schedule 80 aluminum