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 Galvanized Iron and Steel Threaded Pipe Fittings
The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class: 150
- Specifications Met: ASTM A153, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Flanges: Use Class 150 galvanized steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female × NPT Male | ||||||
1/2 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
3/4 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class: 150
- Specifications Met: ASTM A153, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Flanges: Use Class 150 galvanized steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
1/4 | 1/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
3/8 | 1/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
3/8 | 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1/2 | 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 0000 |
1/2 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 0000 |
3/4 | 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
3/4 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
3/4 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 0000 |
1 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 1/2 | 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
2 1/2 | 2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
3 | 2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
3 | 2 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
4 | 3 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
Compact Extreme-Pressure Steel Threaded Pipe Fittings
These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces. They are galvanized and zinc-plated steel, which have better corrosion resistance than plain steel fittings.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Hydraulic Fluid, Water
- Specifications Met: ASTM A576
Pipe Size | Dash Size | ||||||
---|---|---|---|---|---|---|---|
(A) | (B) | (A) | (B) | Max. Pressure | Material | Each | |
NPT Female × NPTF Male | |||||||
1/2 | 1/4 | 08 | 04 | 3,000 psi @ 72° F | Zinc Plated Steel | 000000000 | 000000 |
NPTF Female × NPTF Male | |||||||
1/8 | 1/4 | 02 | 04 | 5,000 psi @ 72° F | Zinc Plated Steel | 000000000 | 00000 |
1/4 | 1/8 | 04 | 02 | 5,000 psi @ 72° F | Zinc Plated Steel | 000000000 | 00000 |
1/4 | 3/8 | 04 | 06 | 5,000 psi @ 72° F | Zinc Plated Steel | 000000000 | 00000 |
3/8 | 1/4 | 06 | 04 | 4,500 psi @ 72° F | Zinc Plated Steel | 000000000 | 00000 |
3/8 | 1/2 | 06 | 08 | 4,500 psi @ 72° F | Zinc Plated Steel | 000000000 | 00000 |
1/2 | 3/8 | 08 | 06 | 3,000 psi @ 72° F | Zinc Plated Steel | 000000000 | 00000 |
1/2 | 3/4 | 08 | 12 | 3,000 psi @ 72° F | Zinc Plated Steel | 000000000 | 00000 |
3/4 | 1/2 | 12 | 08 | 3,000 psi @ 72° F | Zinc Plated Steel | 000000000 | 00000 |
- For Use With: Air, Hydraulic Fluid, Water
- Specifications Met: ASTM A576
Pipe Size | Dash Size | ||||||
---|---|---|---|---|---|---|---|
(A) | (B) | (A) | (B) | Max. Pressure | Material | Each | |
NPTF Female | |||||||
1/4 | 1/8 | 04 | 02 | 5,000 psi @ 72° F | Zinc Plated Steel | 000000000 | 00000 |
Medium-Pressure Galvanized Iron and Steel Threaded Pipe Fittings
A galvanized finish gives these fittings fair corrosion resistance. They have the strength to handle medium-pressure applications.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Steam, Water
- Pressure Class : 300
- Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel