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 Brass and Bronze Threaded Pipe Fittings
Use these fittings in low-pressure flow applications. They have 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:
NPT: Air, Drinking Water, Natural Gas, Oil
BSPT: Air, Natural Gas, Oil, Steam, Water - Pressure Class: 125
- Specifications Met:
NPT: ASME B1.20.1, ASME B16.15, NSF/ANSI 61
BSPT: ASME BS21, ASTM B584 - Pipe Nipples and Pipe: Use Schedule 40 brass
- Flanges:
NPT: Use Class 150 brass
BSPT: Use Class 150 bronze
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
BSPT Female | |||||
|---|---|---|---|---|---|
| 1/8 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 000000 |
| 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
| 3/8 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
| 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
| 3/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
| 1 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
| 1 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 000000 |
| 1 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 000000 |
| 2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 000000 |
Bronze Unthreaded Pipe Fittings
Snap a brazing ring (sold separately) into these fittings and braze them to unthreaded pipe for a strong, leak-resistant connection. Fittings are also known as Silbraze fittings. They are bronze, which is compatible with brass and has good corrosion resistance.
Union connectors separate into three pieces so you can access your line.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Oil, Steam, Water, Natural Gas
- Specifications Met: MIL-F-1183
- Pipe Nipples and Pipe: Use Schedule 40 brass
Fittings | Brazing Rings | |||||
|---|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Max. Steam Pressure | Each | Each | ||
| 1/2 | 200 psi @ 72° F | 200 psi @ 425° F | 0000000 | 000000 | 0000000 | 00000 |
| 3/4 | 200 psi @ 72° F | 200 psi @ 425° F | 0000000 | 000000 | 0000000 | 0000 |
| 1 | 200 psi @ 72° F | 200 psi @ 425° F | 0000000 | 000000 | 0000000 | 0000 |
| 1 1/2 | 200 psi @ 72° F | 200 psi @ 425° F | 0000000 | 000000 | 0000000 | 0000 |
| 2 | 200 psi @ 72° F | 200 psi @ 425° F | 0000000 | 000000 | 0000000 | 0000 |
Solder-Connect Fittings for Copper Tubing
- Temperature Range: 32° to 200° F
Solder these fittings to copper tubing or the tube end of another fitting for a permanent, leak-tight connection. They are also known as sweat fittings. Fittings have good corrosion resistance. To adhere to safety standards for drinking water systems, use fittings that meet NSF/ANSI 61 or EN 1057.
Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.
For technical drawings and 3-D models, click on a part number.
- For Use With: Drinking Water
- Tubing: Use with K, M, L copper
- Specifications Met: See table
Union connectors separate into three pieces for easy access to your line.
Press-Connect Fittings for Copper Tubing
- For Use With: Drinking Water
- Maximum Pressure: 200psi @ 72° F
- Temperature Range: 0° to 250° F
- Tubing: Use with K, M, L copper
- Specifications Met: See table
Crimp these fittings to copper tubing with a crimping tool (sold separately). An O-ring on the inside of the fitting creates a leak-tight connection that doesn’t require heat or soldering. They are comparable to Viega ProPress fittings. Fittings have good corrosion resistance. They meet NSF/ANSI safety standards for use with drinking water systems.
Unions separate into three pieces for easy access to your line. Union adapters for galvanized steel threaded pipe join copper tubing to galvanized threaded connections on hot water heaters.
Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.
For technical drawings and 3-D models, click on a part number.
| Copper Tube Size | For Tube OD | Pipe Size | Lg. | Material | Specifications Met | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/2 | 5/8" | 1/2 | 2 19/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 3/4 | 7/8" | 3/4 | 2 29/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 | 1 1/8" | 1 | 3 29/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/4 | 1 3/8" | 1 1/4 | 3 33/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/2 | 1 5/8" | 1 1/2 | 4 15/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 2 | 2 1/8" | 2 | 4 9/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| Copper Tube Size | For Tube OD | Pipe Size | Lg. | Material | Specifications Met | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/2 | 5/8" | 1/2 | 2 17/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 3/4 | 7/8" | 3/4 | 2 27/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 | 1 1/8" | 1 | 2 7/8" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/4 | 1 3/8" | 1 1/4 | 2 31/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/2 | 1 5/8" | 1 1/2 | 3 7/8" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 2 | 2 1/8" | 2 | 3 59/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| Copper Tube Size | For Tube OD | Pipe Size | Lg. | Material | Specifications Met | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/2 | 5/8" | 1/2 | 2 15/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 3/4 | 7/8" | 3/4 | 2 9/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 | 1 1/8" | 1 | 2 9/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/4 | 1 3/8" | 1 1/4 | 2 11/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/2 | 1 5/8" | 1 1/2 | 3 7/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 2 | 2 1/8" | 2 | 3 17/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| Copper Tube Size | For Tube OD | Lg. | Material | Specifications Met | Each | |
| 1/2 | 5/8" | 2 27/32" | Bronze | ASME B16.51, NSF/ANSI 61, UL 213 | 0000000 | 000000 |
| 3/4 | 7/8" | 3 5/32" | Bronze | ASME B16.51, NSF/ANSI 61, UL 213 | 0000000 | 00000 |
| 1 | 1 1/8" | 3 41/64" | Bronze | ASME B16.51, NSF/ANSI 61, UL 213 | 0000000 | 00000 |
| 1 1/4 | 1 3/8" | 3 11/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/2 | 1 5/8" | 4 61/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 2 | 2 1/8" | 5 7/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
