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About Pipe and Fittings
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Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.
Aluminum Unthreaded Pipe Flanges
Also known as Pressure Class 125 flanges, these are for use in low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges are aluminum, which is lightweight with good corrosion resistance. Slip-on weld flanges have no internal stop; slide a pipe through the flange and weld on both sides. Reducing flanges let you transition your system to a smaller pipe size; attach to a flange with a larger pipe size but with the same flange dimensions.
Slip-On Weld Flanges
Front
Flat Surface on Back
- For Use With: Air, Oil, Water
- Pressure Class: 125
- Specifications Met: ASME B16.1
- Fittings: Use Schedule 40 aluminum
- Pipe: Use Schedule 40 aluminum
Bolt Hole | ||||||||
|---|---|---|---|---|---|---|---|---|
Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Each | |
| 1/2 | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 150 psi @ 72° F | 44705K37 | 000000 |
| 3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 150 psi @ 72° F | 44705K38 | 00000 |
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 150 psi @ 72° F | 44705K361 | 00000 |
| 1 1/4 | 4 5/8" | 1/2" | 5/8" | 4 | 3 1/2" | 150 psi @ 72° F | 44705K362 | 00000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 psi @ 72° F | 44705K363 | 00000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 psi @ 72° F | 44705K364 | 00000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 psi @ 72° F | 44705K365 | 00000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 psi @ 72° F | 44705K366 | 00000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 psi @ 72° F | 44705K367 | 000000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 150 psi @ 72° F | 44705K542 | 000000 |
| 8 | 13 1/2" | 3/4" | 7/8" | 8 | 11 3/4" | 150 psi @ 72° F | 44705K772 | 000000 |
Slip-On Weld Reducing Flanges
Front
Flat Surface on Back
- For Use With: Air, Oil, Water
- Pressure Class: 125
- Specifications Met: ASME B16.1
- Fittings: Use Schedule 40 aluminum
- Pipe: Use Schedule 40 aluminum