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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.
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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.
Straight Adapters, Male Socket-Connect Tube × Female Socket-Connect Tube
- For Use With: Drinking Water
- Tubing: Use with K, M, L copper
- Specifications Met: ASME B16.22, MSS-SP104, NSF/ANSI 61
Tube Connection (A) | Tube Connection (B) | |||||||
|---|---|---|---|---|---|---|---|---|
| Copper Tube Size  | Tube OD | Copper Tube Size | For Tube OD | Material | Max. Pressure | Lg. | Each | |
| 3 1/2 | 3 5/8" | 2 | 2 1/8" | Copper | 300 psi @ 72° F | 4 9/64" | 00000000 | 000000 |
| 3 1/2 | 3 5/8" | 2 1/2 | 2 5/8" | Copper | 300 psi @ 72° F | 3 29/32" | 00000000 | 00000 |
| 3 1/2 | 3 5/8" | 3 | 3 1/8" | Copper | 300 psi @ 72° F | 3 29/32" | 00000000 | 00000 |
| 4 | 4 1/8" | 3 1/2 | 3 5/8" | Copper | 200 psi @ 72° F | 4 5/8" | 00000000 | 00000 |
Straight Connectors, Female Socket-Connect Tube
- For Use With: Drinking Water
- Tubing: Use with K, M, L copper
- Specifications Met: ASME B16.22, MSS-SP104, NSF/ANSI 61
| Copper Tube Size | For Tube OD | Material | Max. Pressure | Each | |
| 3 1/2 | 3 5/8" | Copper | 300 psi @ 72° F | 00000000 | 000000 |
Straight Reducers with Center Stop, Female Socket-Connect Tube
- For Use With: Drinking Water
- Tubing: Use with K, M, L copper
- Specifications Met: ASME B16.22, MSS-SP104, NSF/ANSI 61
Fittings with center stop have a small internal ridge that prevents the tubing from sliding all the way through the fitting.
Tube Connection (A) | Tube Connection (B) | ||||||
|---|---|---|---|---|---|---|---|
| Copper Tube Size | For Tube OD | Copper Tube Size | For Tube OD | Material | Max. Pressure | Each | |
| 4 | 4 1/8" | 3 1/2 | 3 5/8" | Copper | 200 psi @ 72° F | 00000000 | 000000 |
Short 90° Elbow Connectors, Female Socket-Connect Tube
- For Use With: Drinking Water
- Tubing: See table
- Specifications Met: See table
| Copper Tube Size | For Tube OD | Material | Max. Pressure | For Copper Tube Type | Specifications Met | Each | |
| 3 1/2 | 3 5/8" | Copper | 300 psi @ 72° F | K, M, L | ASME B16.22, MSS-SP104, NSF/ANSI 61 | 00000000 | 0000000 |
Caps
- For Use With: Drinking Water
- Tubing: See table
- Specifications Met: See table
| Copper Tube Size | For Tube OD | Material | Max. Pressure | For Copper Tube Type | Specifications Met | Each | |
| 3 1/2 | 3 5/8" | Copper | 300 psi @ 72° F | K, M, L | ASME B16.22, MSS-SP104, NSF/ANSI 61 | 00000000 | 000000 |