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 Flanges
- For Use With: Air, Drinking Water, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Specifications Met:
NPT: ASME B1.20.1, ASME B16.24, ASTM B584, NSF/ANSI 61
BSPT: ASTM B584, BS21 - Pipe Nipples and Pipe: Use Schedule 40 brass
- Fittings:
NPT: Use Class 125 brass
BSPT: Use Class 125 bronze
Also known as Pressure Class 150 flanges, these are designed for low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges have good corrosion resistance. To adhere to safety standards for drinking water systems, use flanges that meet NSF/ANSI 61.
For technical drawings and 3-D models, click on a part number.
Bolt Hole | |||||||||
---|---|---|---|---|---|---|---|---|---|
Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Material | Each | |
NPT | |||||||||
1/2 | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 225 psi @ 72° F | Brass | 00000000 | 0000000 |
3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 225 psi @ 72° F | Brass | 00000000 | 000000 |
1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 225 psi @ 72° F | Brass | 00000000 | 000000 |
1 1/4 | 4 5/8" | 1/2" | 5/8" | 4 | 3 1/2" | 225 psi @ 72° F | Brass | 00000000 | 000000 |
1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 225 psi @ 72° F | Brass | 00000000 | 000000 |
2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 225 psi @ 72° F | Brass | 00000000 | 000000 |
2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 225 psi @ 72° F | Brass | 00000000 | 000000 |
3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 225 psi @ 72° F | Brass | 00000000 | 000000 |
4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 225 psi @ 72° F | Brass | 00000000 | 00000000 |
Low-Pressure Brass and Bronze Threaded Pipe Fittings
Use these fittings in low-pressure flow applications. They have good corrosion resistance. Fittings rated for use with drinking water meet NSF/ANSI 61 safety standards.
Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: See table
- Pressure Class: See table
- Specifications Met: See table
- Pipe Nipples and Pipe: See table
- Flanges: See table
For Pipe | For Flange | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Max. Pressure | Pressure Class | Material | Schedule | Material | Class | Material | For Use With | Specifications Met | Each | |
NPSL Female | |||||||||||
1/8 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 00000 |
1/4 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
3/8 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
1/2 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
3/4 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
1 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
1 1/4 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 00000 |
1 1/2 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 00000 |
2 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 00000 |
2 1/2 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Natural Gas, Oil | ASME B16.15 | 00000000 | 00000 |
3 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Natural Gas, Oil | ASME B16.15 | 00000000 | 00000 |
Brass and Bronze Unthreaded Pipe Flanges
Bolt these flanges to equipment or to another same-size, flat-surface flange with a gasket (sold separately). They have good corrosion resistance.
Cap flanges are also known as blind flanges.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Water
- Pressure Class : 150
- Specifications Met: ASME B16.24
- Pipe Nipples and Pipe: Use Schedule 40 brass
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
Fittings with flange end bolt to equipment or another same-size flange to create an access point within a line.
Copper Tube Size | For Tube OD | Flange OD | Bolt Circle Dia. | Number of Bolt Holes | Bolt Hole Diameter | For Bolt Diameter | Bolts Included | Material | Max. Pressure | Specifications Met | Each | |
1/2 | 5/8" | 3 1/2" | 2 3/8" | 4 | 5/8" | 1/2" | No | Brass | 400 psi @ 72° F | ASME B16.22, MSS-SP104, NSF/ANSI 61 | 00000000 | 000000 |
3/4 | 7/8" | 3 7/8" | 2 3/4" | 4 | 5/8" | 1/2" | No | Brass | 400 psi @ 72° F | ASME B16.22, MSS-SP104, NSF/ANSI 61 | 00000000 | 00000 |
1 | 1 1/8" | 4 1/4" | 3 1/8" | 4 | 5/8" | 1/2" | No | Brass | 400 psi @ 72° F | ASME B16.18, NSF/ANSI 61 | 00000000 | 000000 |
1 1/4 | 1 3/8" | 4 5/8" | 3 1/2" | 4 | 5/8" | 1/2" | No | Brass | 400 psi @ 72° F | ASME B16.18, NSF/ANSI 61 | 00000000 | 000000 |
1 1/2 | 1 5/8" | 5" | 3 7/8" | 4 | 5/8" | 1/2" | No | Brass | 400 psi @ 72° F | ASME B16.18, NSF/ANSI 61 | 00000000 | 000000 |
2 | 2 1/8" | 6" | 4 3/4" | 4 | 3/4" | 5/8" | No | Brass | 300 psi @ 72° F | ASME B16.18, NSF/ANSI 61 | 00000000 | 000000 |
2 1/2 | 2 5/8" | 7" | 5 1/2" | 4 | 3/4" | 5/8" | No | Brass | 300 psi @ 72° F | ASME B16.22, MSS-SP104, NSF/ANSI 61 | 00000000 | 000000 |
3 | 3 1/8" | 7 1/2" | 6" | 4 | 3/4" | 5/8" | No | Brass | 300 psi @ 72° F | ASME B16.22, MSS-SP104, NSF/ANSI 61 | 00000000 | 000000 |
4 | 4 1/8" | 9" | 7 1/2" | 8 | 3/4" | 5/8" | No | Brass | 200 psi @ 72° F | ASME B16.22, MSS-SP104, NSF/ANSI 61 | 00000000 | 000000 |
Laboratory Flanges and Turrets
Provide a connection for stop cocks, needle valves, and nozzles by attaching these flanges and turrets to your supply pipe.
Inlet | Outlet | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
No. of Outlets | Dia. | Ht. | Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Each | ||
For Air, Gas, and Water | |||||||||||
Chrome-Plated Brass | |||||||||||
A | 1 | 2" | 1 1/8" | 3/8 | NPT | Female | 3/8 | NPT | Female | 0000000 | 000000 |
Brass Serrated Flange Locknuts
Made from brass, these flange locknuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. They’re easy to install and resist mild vibration since serrations grip the material surface instead of the threads. The flange distributes pressure on the material surface, so you don’t need a separate washer. Height includes the flange.
For technical drawings and 3-D models, click on a part number.