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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About Rotating Joints
Rotating joints transfer hot and cold materials from your supply line to a continuously revolving drum, roller, or other rotating equipment.
Pipe size is an industry designation, not the actual size. View information about how to measure pipe size threads.
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Low-Pressure Aluminum Threaded Pipe Fittings
In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.
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: Air, Oil, Water
- Pipe Nipples and Pipe: Use Schedule 40 aluminum
- Flanges: Use Class 125 aluminum
| Pressure Class  | Pipe Size | Max. Pressure | Each | |
NPT Female | ||||
|---|---|---|---|---|
| 150 | 1/4 | 150 psi @ 72° F | 000000000 | 000000 |
| 150 | 3/8 | 150 psi @ 72° F | 000000000 | 00000 |
| 150 | 1/2 | 150 psi @ 72° F | 000000000 | 00000 |
| 150 | 3/4 | 150 psi @ 72° F | 000000000 | 00000 |
| 150 | 1 | 150 psi @ 72° F | 000000000 | 00000 |
| 150 | 1 1/4 | 150 psi @ 72° F | 000000000 | 00000 |
| 150 | 1 1/2 | 150 psi @ 72° F | 000000000 | 00000 |
| 150 | 2 | 150 psi @ 72° F | 000000000 | 00000 |
| 150 | 2 1/2 | 150 psi @ 72° F | 000000000 | 000000 |
| 150 | 3 | 150 psi @ 72° F | 000000000 | 000000 |
High-Pressure Aluminum Threaded Pipe Fittings
Also known as Pressure Class 3000 fittings, these have the highest pressure rating of all the aluminum pipe fittings we offer. They are lightweight with 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: Air, Water
- Pressure Class : 3000
- Specifications Met: Fed. Spec. QQ-A-200/8, ASTM B221, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 aluminum
| Pipe Size | Max. Pressure | Each | |
NPT Female | |||
|---|---|---|---|
| 1 | 1,500 psi @ 72° F | 00000000 | 0000000 |
Aluminum One-Way-Flow Rotating Joints
- For Use With: Air, Hydraulic Oil
- Temperature Range: See table
- Maximum Pressure:
Air: 150 psi @ 72° F
Oil: See table - Maximum Vacuum: 28 in. of Hg @ 72° F
These joints have a rotating shaft with threads on one end that connect to a continuously revolving drum, roller, or other rotating equipment. Use them to transfer hot and cold materials from your supply line. Joints are for one-way flow and are meant to be used in pairs—one joint serves as the supply line while the other serves as the return line. Joints are made of lightweight aluminum. They are a compact size for use in small air and hydraulic applications.
If your drum rotates counterclockwise as you face the connecting end, you should select a rotating joint with right-handed threads.
For technical drawings and 3-D models, click on a part number.
Rotating Threads | Stationary Threads | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Max. Speed, rpm | Body Dia. | Lg. | Max. Oil Pressure | Temperature Range, °F | Shaft Material | Each | |
Right-Hand Rotating Threads | ||||||||||||||
| 1/8 | __ | NPT | Male | 1/8 | NPT | Female | 1,500 | 1 1/8" | 2 13/16" | 1,000 psi @ 72° F | -20° to 250° | Steel | 0000000 | 0000000 |
| 1/4 | __ | NPT | Male | 1/4 | NPT | Female | 1,500 | 1 5/8" | 3 3/16" | 1,000 psi @ 72° F | -20° to 250° | Steel | 0000000 | 000000 |
| 3/8 | __ | NPT | Male | 3/8 | NPT | Female | 1,500 | 1 11/16" | 3 15/16" | 500 psi @ 72° F | -20° to 250° | Stainless Steel | 0000000 | 000000 |
| 1/2 | __ | NPT | Male | 1/2 | NPT | Female | 1,500 | 2 1/4" | 4 9/16" | 750 psi @ 72° F | -20° to 250° | Stainless Steel | 0000000 | 000000 |
| 3/4 | __ | NPT | Male | 3/4 | NPT | Female | 1,500 | 2 7/8" | 5 1/8" | 1,000 psi @ 72° F | -20° to 250° | Stainless Steel | 0000000 | 000000 |
| 1 | __ | NPT | Male | 1 | NPT | Female | 1,500 | 3 1/4" | 6 3/16" | 1,000 psi @ 72° F | -15° to 250° | Stainless Steel | 0000000 | 000000 |
| 1 1/2 | __ | NPT | Male | 1 1/2 | NPT | Female | 1,500 | 4 1/4" | 7 3/4" | 750 psi @ 72° F | -20° to 250° | Stainless Steel | 0000000 | 000000 |
| __ | 3/8"-24 | UNF | Male | 1/8 | NPT | Female | 3,500 | 1 1/8" | 2 13/16" | 1,000 psi @ 72° F | -20° to 250° | Steel | 0000000 | 000000 |
| __ | 5/8"-18 | UNF | Male | 1/4 | NPT | Female | 3,500 | 1 5/8" | 3 3/16" | 1,000 psi @ 72° F | -20° to 250° | Steel | 0000000 | 000000 |
| __ | 5/8"-18 | UNF | Male | 3/8 | NPT | Female | 3,500 | 1 11/16" | 3 15/16" | 500 psi @ 72° F | -20° to 250° | Stainless Steel | 0000000 | 000000 |
| __ | 3/4"-16 | UNF | Male | 1/2 | NPT | Female | 3,500 | 2 1/4" | 4 7/16" | 750 psi @ 72° F | -20° to 250° | Stainless Steel | 0000000 | 000000 |
| __ | 1"-14 | UNF | Male | 3/4 | NPT | Female | 3,500 | 2 7/8" | 5" | 1,000 psi @ 72° F | -20° to 250° | Stainless Steel | 0000000 | 000000 |