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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 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.
Bushing Straight Reducing Adapters for Flat Tanks
- For Use With: Air, Diesel Fuel, Gasoline, Oil, Steam, Water
- Pipe Nipples and Pipe: Use Schedule 40 steel
Pipe Size | ||||||
|---|---|---|---|---|---|---|
| (A) | (B) | Lg. | Hex Wd. | Material | Each | |
NPT Male × NPT Female | ||||||
| 1 1/2 | 1/2 | 1 7/32" | 1 3/8" | Black-Coated Iron | 0000000 | 000000 |
| 1 1/2 | 3/4 | 1 5/16" | 1 23/32" | Black-Coated Iron | 0000000 | 00000 |
| 1 1/2 | 1 | 1 5/16" | 1 23/32" | Black-Coated Iron | 0000000 | 00000 |
| 2 | 3/8 | 1 5/16" | 1 3/8" | Black-Coated Iron | 0000000 | 00000 |
| 2 | 1/2 | 1 5/16" | 1 3/8" | Black-Coated Iron | 0000000 | 00000 |
| 2 | 3/4 | 1 3/8" | 1 11/16" | Black-Coated Iron | 0000000 | 00000 |
| 2 | 1 | 1 11/16" | 2 1/32" | Black-Coated Iron | 0000000 | 00000 |
| 2 | 1 1/4 | 1 9/16" | 2 19/32" | Black-Coated Iron | 0000000 | 00000 |
| 2 | 1 1/2 | 1 25/32" | 2 17/32" | Black-Coated Iron | 0000000 | 00000 |
| 2 1/2 | 2 | 1 25/32" | 2 17/32" | Black-Coated Iron | 0000000 | 00000 |
| 3 | 1 | 1 9/16" | 2 5/16" | Black-Coated Iron | 0000000 | 00000 |
| 3 | 1 1/2 | 1 21/32" | 2 11/16" | Black-Coated Iron | 0000000 | 00000 |
| 3 | 2 | 1 3/4" | 3 1/4" | Black-Coated Iron | 0000000 | 00000 |
| 4 | 1 | 1 7/8" | 2 7/8" | Black-Coated Iron | 0000000 | 00000 |
| 4 | 2 | 1 13/32" | 2 9/16" | Black-Coated Iron | 0000000 | 00000 |
| 4 | 2 1/2 | 2 11/32" | 4 5/16" | Black-Coated Iron | 0000000 | 00000 |
| 4 | 3 | 2 7/16" | 4 3/4" | Black-Coated Iron | 0000000 | 00000 |
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.
For technical drawings and 3-D models, click on a part number.
