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 Iron and Steel Threaded Pipe Fittings
Use these fittings for low-pressure applications in noncorrosive environments.
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: ASME B1.20.1, ASME B16.3, UL Listed
- Pipe Nipples and Pipe: Use Schedule 40 steel
| Pipe Size  | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
|---|---|---|---|---|---|
| 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 000000 |
| 3/4 | 300 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
| 1 | 300 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
| 1 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
| 1 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
| 2 | 300 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 00000 |
Standard-Wall Plastic Pipe Fittings for Water
Connect these fittings to Schedule 40 plastic pipe–they are the industry standard for residential and commercial low-pressure plumbing and water supply applications. They are plastic for good corrosion resistance.
Fittings for drinking water meet NSF/ANSI Standard 61.
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
To prevent leaks in threaded connections, apply a sealant to the male threads. For plastic threads, apply a non-hardening, plastic-compatible sealant. Tape or sealants with PTFE are not recommended for plastic-to-plastic connections. Fittings that meet ASTM D1784, ASTM D1785, and ASTM D4066 adhere to specifications and testing requirements for material quality.
Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
For technical drawings and 3-D models, click on a part number.
- For Use With: Drinking Water, Water
- Maximum Temperature: 140° F
- Specifications Met: ASTM D1784, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
- Flanges: Use Schedule 40 PVC Plastic
- For Use With: Drinking Water, Water
- Maximum Temperature: 140° F
- Specifications Met: ASTM D1784, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
- Flanges: Use Schedule 40 PVC Plastic
Press-Connect Fittings for Copper Tubing
- For Use With: Drinking Water
- Maximum Pressure: 200psi @ 72° F
- Temperature Range: 0° to 250° F
- Tubing: Use with K, M, L copper
- Specifications Met: See table
Crimp these fittings to copper tubing with a crimping tool (sold separately). An O-ring on the inside of the fitting creates a leak-tight connection that doesn’t require heat or soldering. They are comparable to Viega ProPress fittings. Fittings have good corrosion resistance. They meet NSF/ANSI safety standards for use with drinking water systems.
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.
Mounting Hole | ||||||||
|---|---|---|---|---|---|---|---|---|
| Copper Tube Size | For Tube OD | Pipe Size | Material | Dia. | No. of | Specifications Met | Each | |
NPT Threads | ||||||||
| 1/2 | 5/8" | 1/2 | Bronze | 1/4" | 2 | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 3/4 | 7/8" | 3/4 | Bronze | 1/4" | 2 | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 | 1 1/8" | 1/2 | Bronze | 1/4" | 2 | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
