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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High-Pressure Socket-Connect Steel Unthreaded Pipe Fittings
Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection. Fittings have heavy duty construction that stands up to high-pressure applications. They are for use in noncorrosive environments.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 3000
- Specifications Met: ASTM A105, MSS SP-79
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 and 600 steel
Pipe Size | ||||||
|---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
Socket Connect Male × Socket Connect Female | ||||||
| 1/4 | 1/8 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 000000 |
| 1/2 | 1/4 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 0000 |
| 1/2 | 3/8 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 0000 |
| 3/4 | 1/4 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 0000 |
| 3/4 | 3/8 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 0000 |
| 3/4 | 1/2 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 0000 |
| 1 | 1/2 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 0000 |
| 1 | 3/4 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 0000 |
| 1 1/4 | 1 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 0000 |
| 1 1/2 | 1 1/4 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 00000 |
| 2 | 1 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 00000 |
| 2 | 1 1/2 | 3,000 psi @ 72° F | Not Rated | Steel | 000000000 | 00000 |
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 3000
- Specifications Met: ASTM A105, ASME B16.11
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 and 600 steel
Pipe Size | |||||
|---|---|---|---|---|---|
| (A) | (B) | Max. Pressure | Material | Each | |
| 1/4 | 1/8 | 3,000 psi @ 72° F | Steel | 000000000 | 000000 |
| 3/8 | 1/8 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 3/8 | 1/4 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 1/2 | 1/4 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 1/2 | 3/8 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 3/4 | 3/8 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 3/4 | 1/2 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 1 | 1/2 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 1 | 3/4 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 1 1/4 | 1 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 1 1/2 | 1 1/4 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 2 | 1 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 2 | 1 1/2 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 2 1/2 | 2 | 3,000 psi @ 72° F | Steel | 000000000 | 00000 |
| 3 | 2 1/2 | 3,000 psi @ 72° F | Steel | 000000000 | 000000 |
| 4 | 3 | 3,000 psi @ 72° F | Steel | 000000000 | 000000 |
High-Pressure Socket-Connect Stainless Steel Unthreaded Pipe Fittings
Forged for excellent strength, these heavy duty socket-connect fittings stand up to high-pressure applications. They are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Pressure Class: 3000
- Specifications Met: ASME B16.11, ASTM A182
- Pipe Nipples and Pipe: Use Schedule 80 stainless steel
Pipe Size | Dash Size | ||||||
|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | Max. Steam Pressure | Max. Pressure | Each | |
304/304L Stainless Steel | |||||||
Socket Connect Male × Socket Connect Female | |||||||
| 3/8 | 1/4 | 06 | 04 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 000000 |
| 1/2 | 1/4 | 08 | 04 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 1/2 | 3/8 | 08 | 06 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 3/4 | 1/2 | 12 | 08 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 1 | 3/4 | 16 | 12 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 1 1/4 | 24 | 20 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 2 | 1 1/2 | 32 | 24 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
316/316L Stainless Steel | |||||||
Socket Connect Male × Socket Connect Female | |||||||
| 1/4 | 1/8 | 04 | 02 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 00000 |
| 3/8 | 1/4 | 06 | 04 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 00000 |
| 1/2 | 1/4 | 08 | 04 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 00000 |
| 1/2 | 3/8 | 08 | 06 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 00000 |
| 3/4 | 1/2 | 12 | 08 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 00000 |
| 1 | 3/4 | 16 | 12 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 1 1/4 | 24 | 20 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 000000 |
| 2 | 1 1/2 | 32 | 24 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 000000 |
- For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Pressure Class: 3000
- Specifications Met: ASME B16.11, ASTM A182
- Pipe Nipples and Pipe: Use Schedule 80 stainless steel
Pipe Size | Dash Size | ||||||
|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | Max. Steam Pressure | Max. Pressure | Each | |
304/304L Stainless Steel | |||||||
| 1/4 | 1/8 | 04 | 02 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 000000 |
| 3/8 | 1/4 | 06 | 04 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 1/2 | 1/4 | 08 | 04 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 1/2 | 3/8 | 08 | 06 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 3/4 | 1/2 | 12 | 08 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 1 | 3/4 | 16 | 12 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 1 1/4 | 24 | 20 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 000000 |
| 2 | 1 1/2 | 32 | 24 | 1,900 psi @ 350° F | 2,500 psi @ 72° F | 000000000 | 000000 |
316/316L Stainless Steel | |||||||
| 1/2 | 1/4 | 08 | 04 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 00000 |
| 1/2 | 3/8 | 08 | 06 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 00000 |
| 3/4 | 1/2 | 12 | 08 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 00000 |
| 1 | 3/4 | 16 | 12 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 000000 |
| 1 1/2 | 1 1/4 | 24 | 20 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 000000 |
| 2 | 1 1/2 | 32 | 24 | 1,900 psi @ 350° F | 3,000 psi @ 72° F | 000000000 | 000000 |
Thin-Wall Socket-Connect Aluminum Unthreaded Pipe Fittings
Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection. Fittings are aluminum, which is lightweight with good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
