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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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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.
More
Medium-Pressure Iron and Steel Threaded Pipe Fittings
With better strength than our low-pressure iron and steel pipe fittings, these can handle medium-pressure applications. They are for use in noncorrosive environments.
Union connectors separate into three pieces so you can access your line without unthreading pipe connections.
Female x male 90° elbow adapters are also known as street elbows.
Inline tees are also known as branch tees.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 1/2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.39, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/8 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 000000 |
1/4 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 00000 |
3/8 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 00000 |
2 1/2 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 000000 |
3 | 600 psi @ 72° F | 230 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
3/8 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
1/2 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 1/2 | 1 1/2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
2 1/2 | 2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3 | 1 1/2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3 | 2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3 | 2 1/2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 1/2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.39, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female × NPT Male | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
3/8 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
1/2 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
2 | 1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 1/2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female × NPT Male | |||||
---|---|---|---|---|---|
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 1/2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
3/8 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
1/2 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
1 1/2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
2 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
2 | 1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
2 1/2 | 1 1/2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 1/2 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3 | 1,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: See Table
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Drive Size | Max. Pressure | Max. Steam Pressure | Material | Specifications Met | Each | |
NPT Male | |||||||
---|---|---|---|---|---|---|---|
1/4 | 1/4" | 2,000 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed | 0000000 | 00000 |
3/8 | 5/16" | 2,000 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed | 0000000 | 000 |
1/2 | 3/8" | 2,000 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed | 0000000 | 0000 |
3/4 | 9/16" | 2,000 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed | 0000000 | 0000 |
1 | 5/8" | 2,000 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed | 0000000 | 0000 |
1 1/2 | 1" | 1,500 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, UL Listed | 00000000 | 00000 |
2 | 1" | 1,500 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, UL Listed | 00000000 | 00000 |
NPTF Male | |||||||
1 1/4 | 3/4" | 300 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B16.14 | 00000000 | 0000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: See Table
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | Plug Construction | Max. Pressure | Max. Steam Pressure | Material | Specifications Met | Each | |
NPT Male | |||||||
---|---|---|---|---|---|---|---|
1/8 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, ASME B16.14 | 0000000 | 00000 |
1/4 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, ASME B16.14 | 0000000 | 000 |
3/8 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Steel | ASME B1.20.1, ASME B16.14 | 0000000 | 0000 |
1/2 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Iron | ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed | 00000000 | 0000 |
3/4 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Iron | ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed | 00000000 | 0000 |
1 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Iron | ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed | 00000000 | 0000 |
1 1/4 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Iron | ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed | 00000000 | 00000 |
1 1/2 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Iron | ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed | 00000000 | 00000 |
2 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Iron | ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed | 00000000 | 00000 |
2 1/2 | Solid | 175 psi @ 72° F | 300 psi @ 550° F | Iron | ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed | 00000000 | 00000 |
3 1/2 | Hollow | 175 psi @ 72° F | 300 psi @ 550° F | Iron | ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed | 00000000 | 00000 |
Medium-Pressure Galvanized Steel Threaded Pipe Flanges


- For Use With: Air, Natural Gas, Steam, Water
- Pressure Class : 300
- Specifications Met: ASTM A123, ASTM A105, ASME B16.5
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Fittings: Use Class 300 iron or steel
A galvanized finish gives these flanges fair corrosion resistance. Also known as Pressure Class 300 flanges, they can withstand medium-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line.
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 | Each | |
NPT | ||||||||
1/2 | 3 3/4" | 5/8" | 0.62" | 4 | 2 5/8" | 600 psi @ 72° F | 0000000 | 0000000 |
3/4 | 4 5/8" | 3/4" | 3/4" | 4 | 3 1/4" | 600 psi @ 72° F | 0000000 | 000000 |
1 | 4 7/8" | 3/4" | 3/4" | 4 | 3 1/2" | 600 psi @ 72° F | 0000000 | 00000 |
1 1/4 | 5 1/4" | 3/4" | 3/4" | 4 | 3 7/8" | 600 psi @ 72° F | 0000000 | 000000 |
1 1/2 | 6 1/8" | 7/8" | 0.88" | 4 | 4 1/2" | 600 psi @ 72° F | 0000000 | 000000 |
2 | 6 1/2" | 3/4" | 3/4" | 8 | 5" | 600 psi @ 72° F | 0000000 | 000000 |
3 | 8 1/4" | 7/8" | 0.88" | 8 | 6 5/8" | 600 psi @ 72° F | 0000000 | 000000 |
4 | 10" | 7/8" | 0.88" | 8 | 7 7/8" | 600 psi @ 72° F | 0000000 | 000000 |
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.
Union connectors separate into three pieces so you can access your line without unthreading pipe connections.
Female x male 90° elbow adapters are also known as street elbows.
Inline tees are also known as branch tees.
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
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |

- For Use With: Air, Natural Gas, Steam, Water
- Pressure Class : 300
- Specifications Met: FM Approved, UL Listed, ASTM A197, ASTM A153, ASME B1.20.1, ASME B16.39
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/8 | 600 psi @ 72° F | 230 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
1/4 | 600 psi @ 72° F | 230 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
3/8 | 600 psi @ 72° F | 230 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1/2 | 600 psi @ 72° F | 230 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
3/4 | 600 psi @ 72° F | 230 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 600 psi @ 72° F | 230 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/4 | 600 psi @ 72° F | 230 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/2 | 600 psi @ 72° F | 230 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
2 | 600 psi @ 72° F | 230 psi @ 550° F | Galvanized Iron | 000000 | 000000 |

- 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
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
3/8 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
1/2 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1/2 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 000000 | 00000 |
3/4 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
3/4 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/4 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/4 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/2 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 00000000 | 00000 |
2 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 00000000 | 000000 |
2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 00000000 | 000000 |
2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 00000000 | 000000 |
2 | 1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 00000000 | 000000 |

- For Use With: Air, Natural Gas, Steam, Water
- Pressure Class : 300
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |

- 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
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female × NPT Male | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |

- 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

- 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
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |

- 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
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |

- 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
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
3/4 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
1 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/4 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
1 1/4 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
1 1/4 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
1 1/2 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 000000 | 000000 |
1 1/2 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
1 1/2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
1 1/2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
2 | 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
2 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
2 | 1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |

- 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
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 000000 |
3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 000000 | 00000 |
1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 | 2,000 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |
2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Galvanized Iron | 0000000 | 00000 |