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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How to Measure Threaded Pipe Size
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Dual-Section Right-Angle Flow Rectangular Manifolds
These manifolds have two separate sections inside, so you can run two different substances through them without worrying about them intermixing. Manifolds are also known as headers. They have mounting holes, so you can mount from the top or side. Manifolds are anodized aluminum, which is lightweight with good corrosion and wear resistance.
Use a plug (sold separately) to close off any unused inlets and outlets.
- For Use With: Air, Water, Hydraulic Fluid
- Temperature Range: -10° to 200° F
- Maximum Pressure:
Air: 1,000 psi @ 72° F
Water: 1,000 psi @ 72° F
Hydraulic Fluid: 3,000 psi @ 72° F - Maximum Vacuum: 29 in. of Hg @ 72° F
Inlet | Outlet | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Outlets per Section | Pipe Size  | Dash Size | Pipe Size | Dash Size | Lg. | Wd. | Ht. | Outlet Ctr.-to-Ctr. | Outlet Spacing | Color | Each | |
| 2 | 1/4 | 04 | 1/8 | 02 | 3 1/4" | 1" | 1" | 3/4" | Standard | Black | 0000000 | 000000 |
| 2 | 3/8 | 06 | 1/4 | 04 | 3 7/8" | 1 1/4" | 1 1/4" | 7/8" | Standard | Black | 00000000 | 00000 |
| 2 | 1/2 | 08 | 3/8 | 06 | 5 1/2" | 1 1/2" | 1 1/2" | 1" | Standard | Black | 00000000 | 00000 |
| 2 | 3/4 | 12 | 1/2 | 08 | 7 1/4" | 2" | 2" | 1 1/2" | Standard | Black | 00000000 | 000000 |
| 3 | 1/4 | 04 | 1/8 | 02 | 4 3/4" | 1" | 1" | 3/4" | Standard | Black | 00000000 | 00000 |
| 3 | 3/8 | 06 | 1/4 | 04 | 5 5/8" | 1 1/4" | 1 1/4" | 7/8" | Standard | Black | 00000000 | 00000 |
| 3 | 1/2 | 08 | 3/8 | 06 | 7 1/2" | 1 1/2" | 1 1/2" | 1" | Standard | Black | 00000000 | 000000 |
| 4 | 1/4 | 04 | 1/8 | 02 | 6 1/4" | 1" | 1" | 3/4" | Standard | Black | 00000000 | 00000 |
| 4 | 3/8 | 06 | 1/4 | 04 | 7 3/8" | 1 1/4" | 1 1/4" | 7/8" | Standard | Black | 00000000 | 00000 |
| 4 | 1/2 | 08 | 3/8 | 06 | 9 1/2" | 1 1/2" | 1 1/2" | 1" | Standard | Black | 00000000 | 000000 |
Hex Drive | External Square Drive | |||||
|---|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Pressure Class | Each | Each | ||
Aluminum—NPT | ||||||
| 1/8 | 150 psi @ 72° F | 150 | 00000000 | 00000 | 000000000 | 00000 |
| 1/4 | 150 psi @ 72° F | 150 | 00000000 | 0000 | 000000000 | 0000 |
| 3/8 | 150 psi @ 72° F | 150 | 00000000 | 0000 | 000000000 | 0000 |
| 1/2 | 150 psi @ 72° F | 150 | 00000000 | 00000 | 000000000 | 0000 |
| 3/4 | 150 psi @ 72° F | 150 | 00000000 | 00000 | 000000000 | 0000 |
Color-Coded Irregular Hex Manifolds
Use these manifolds with injection molding equipment to circulate hot and cold water through your line. They have a compact body with outlets on five sides, so you can run multiple lines from one supply source. Manifolds have mounting holes that let you mount from the top. They are anodized aluminum, which is lightweight with good corrosion and wear resistance.
Dual-section manifolds have both a red side for hot water and a blue side for cold water.
Use a plug (sold separately) to close off any unused inlets and outlets.
- For Use With: Air, Water
- Temperature Range: -40° to 400° F
- Maximum Pressure: 250 psi @ 72° F
- Maximum Vacuum: 29 in. of Hg @ 72° F
| No. of Outlets | No. of Outlets per Section | Inlet Pipe Size | Outlet Pipe Size | Lg. | Wd. | Ht. | Outlet Ctr.-to-Ctr. | Outlet Spacing | Each | |
Dual Section—Blue and Red | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 20 | 10 | 3/4 | 3/8 | 7 1/4" | 2 1/4" | 2 1/4" | 1 1/4" | Standard | 0000000 | 0000000 |
| 20 | 10 | 1 | 3/8 | 7 1/4" | 2 1/4" | 2 1/4" | 1 1/4" | Standard | 0000000 | 000000 |
| 30 | 15 | 3/4 | 3/8 | 9 3/4" | 2 1/4" | 2 1/4" | 1 1/4" | Standard | 0000000 | 000000 |
| 30 | 15 | 1 | 3/8 | 9 3/4" | 2 1/4" | 2 1/4" | 1 1/4" | Standard | 0000000 | 000000 |
| 40 | 20 | 3/4 | 3/8 | 12 1/4" | 2 1/4" | 2 1/4" | 1 1/4" | Standard | 0000000 | 000000 |
| 40 | 20 | 1 | 3/8 | 12 1/4" | 2 1/4" | 2 1/4" | 1 1/4" | Standard | 0000000 | 000000 |