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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 Brass and Bronze Threaded Pipe Fittings
Use these fittings in low-pressure flow applications. They have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.

- For Use With:
Brass: Air, Drinking Water, Natural Gas, Oil
Bronze: Air, Natural Gas, Oil, Steam, Water - Pressure Class : 125
- Specifications Met: See table
- Pipe Nipples and Pipe: Use Schedule 40 brass
- Flanges: See table
Pipe Size | For Flange | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Hex Width | Class | Material | Specifications Met | Each | |
BSPT Male × BSPT Female | ||||||||||
1/2 | 1/8 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 26mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1/2 | 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 26mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 0000 |
1/2 | 3/8 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 25mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 0000 |
3/4 | 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 31mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
3/4 | 3/8 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 31mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
3/4 | 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 30mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1 | 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 37mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1 | 3/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 37mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1 1/4 | 3/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 46mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1 1/4 | 1 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 46mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1 1/2 | 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 27mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1 1/2 | 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 35mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1 1/2 | 3/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 43mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1 1/2 | 1 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 52mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
1 1/2 | 1 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 52mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
2 | 1 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 51mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
2 | 1 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 65mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |
2 | 1 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 64mm | 150 | Bronze | ASME B16.15, ASME BS21, ASTM B584 | 00000000 | 00000 |

- 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 B16.15, 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 | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
BSPT Female | ||||||
1/4 | 1/8 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 000000 |
3/8 | 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1/2 | 1/8 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1/2 | 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1/2 | 3/8 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
3/4 | 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
3/4 | 3/8 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
3/4 | 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1 | 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1 | 3/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1 1/4 | 3/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1 1/4 | 1 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1 1/2 | 3/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1 1/2 | 1 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
1 1/2 | 1 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
2 | 1 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 000000 |
2 | 1 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
2 | 1 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | Bronze | 00000000 | 00000 |
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.
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.

Tube Connection (Male) | Tube Connection (Female) | |||||||
---|---|---|---|---|---|---|---|---|
Copper Tube Size | Tube OD | Copper Tube Size | For Tube OD | Lg. | Material | Specifications Met | Each | |
1 1/2 | 1 5/8" | 1/2 | 5/8" | 2 25/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
2 | 2 1/8" | 1/2 | 5/8" | 3 13/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
2 | 2 1/8" | 3/4 | 7/8" | 3 21/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |