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About Duct Connections
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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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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).
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 Standard 61 for Drinking Water
- Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
- Flanges: Use Schedule 40 PVC Plastic
| Pipe Size | Socket Depth | Material | Color | Each | |
| 1/2 | 7/8" | PVC Plastic | White | 00000000 | 00000 |
| 3/4 | 1" | PVC Plastic | White | 00000000 | 0000 |
| 1 | 1 1/32" | PVC Plastic | White | 00000000 | 0000 |
| 1 1/4 | 1 1/4" | PVC Plastic | White | 00000000 | 0000 |
| 1 1/2 | 1 5/16" | PVC Plastic | White | 00000000 | 0000 |
| 2 | 1 3/8" | PVC Plastic | White | 00000000 | 00000 |
| 2 1/2 | 1 3/4" | PVC Plastic | White | 00000000 | 00000 |
| 3 | 1 7/8" | PVC Plastic | White | 00000000 | 00000 |
| 4 | 2 1/32" | PVC Plastic | White | 00000000 | 00000 |
| 6 | 3" | PVC Plastic | White | 00000000 | 000000 |
| 8 | 4" | PVC Plastic | White | 00000000 | 000000 |
- For Use With: Drinking Water, Water
- Maximum Temperature: 140° F
- Specifications Met: ASTM D1784, NSF/ANSI Standard 61 for Drinking Water
- 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 Standard 61 for Drinking Water
- Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
- Flanges: Use Schedule 40 PVC Plastic
(A) | (B) | ||||||
|---|---|---|---|---|---|---|---|
| Pipe Size | Socket Depth | Pipe Size | Socket Depth | Material | Color | Each | |
| 3/4 | 23/32" | 1/2 | 11/16" | PVC Plastic | White | 00000000 | 00000 |
| 1 | 7/8" | 1/2 | 11/16" | PVC Plastic | White | 00000000 | 00000 |
| 1 | 7/8" | 3/4 | 23/32" | PVC Plastic | White | 00000000 | 00000 |
| 1 1/4 | 15/16" | 1 | 7/8" | PVC Plastic | White | 00000000 | 00000 |
| 1 1/2 | 1 3/32" | 3/4 | 23/32" | PVC Plastic | White | 00000000 | 00000 |
| 1 1/2 | 1 3/32" | 1 | 7/8" | PVC Plastic | White | 00000000 | 00000 |
| 1 1/2 | 1 3/32" | 1 1/4 | 15/16" | PVC Plastic | White | 00000000 | 00000 |
| 2 | 1 5/32" | 1 | 7/8" | PVC Plastic | White | 00000000 | 00000 |
| 2 | 1 5/32" | 1 1/2 | 1 3/32" | PVC Plastic | White | 00000000 | 00000 |
| 3 | 1 7/8" | 2 | 1 5/32" | PVC Plastic | White | 00000000 | 00000 |
| 4 | 2" | 2 | 1 5/32" | PVC Plastic | White | 00000000 | 00000 |
| 4 | 2" | 3 | 1 7/8" | PVC Plastic | White | 00000000 | 00000 |
| 6 | 2 7/8" | 4 | 2 7/32" | PVC Plastic | White | 00000000 | 000000 |
| Pipe Cement | 00000000 | Each | 00000 |
Thick-Wall Plastic Pipe Fittings for Water
Connect these fittings to Schedule 80 pipe–they have thicker, stronger walls than standard-wall fittings so they can handle heavy duty industrial plumbing and water supply applications, such as water processing, waste water treatment, and irrigation. Fittings are plastic for good corrosion resistance. They meet ASTM D1784 specifications and testing requirements for material quality.
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).
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 80 PVC Plastic
- Flanges: Use Class 150 PVC Plastic
| Pipe Size | Socket Depth | Material | Color | Each | |
| 1/2 | 7/8" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 3/4 | 1" | PVC Plastic | Dark Gray | 00000000 | 0000 |
| 1 | 1 1/8" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 1 1/4 | 1 1/4" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 1 1/2 | 1 3/8" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 2 | 1 1/2" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 2 1/2 | 1 3/4" | PVC Plastic | Dark Gray | 00000000 | 000000 |
| 3 | 1 7/8" | PVC Plastic | Dark Gray | 00000000 | 000000 |
| 4 | 2 1/4" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 6 | 3" | PVC Plastic | Dark Gray | 00000000 | 000000 |
| 8 | 4" | PVC Plastic | Dark Gray | 00000000 | 000000 |
- For Use With: Drinking Water, Water
- Maximum Temperature: 140° F
- Specifications Met: ASTM D1784, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Schedule 80 PVC Plastic
- Flanges: Use Class 150 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 80 PVC Plastic
- Flanges: Use Class 150 PVC Plastic
(A) | (B) | ||||||
|---|---|---|---|---|---|---|---|
| Pipe Size | Socket Depth | Pipe Size | Socket Depth | Material | Color | Each | |
| 3/4 | 1" | 1/2 | 7/8" | PVC Plastic | Dark Gray | 00000000 | 000000 |
| 1 | 1 1/8" | 1/2 | 7/8" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 1 | 1 1/8" | 3/4 | 3/4" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 1 1/2 | 1 3/8" | 1/2 | 7/8" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 1 1/2 | 1 3/8" | 3/4 | 1" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 1 1/2 | 1 3/8" | 1 | 1 5/32" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 2 | 1 1/2" | 1/2 | 7/8" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 2 | 1 1/2" | 1 | 1 1/8" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 2 | 1 1/2" | 1 1/2 | 1 3/8" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 2 | 1 17/32" | 3/4 | 1" | PVC Plastic | Dark Gray | 00000000 | 00000 |
| 3 | 1 7/8" | 1 1/2 | 1 3/8" | PVC Plastic | Dark Gray | 00000000 | 000000 |
| 3 | 1 7/8" | 2 | 1 5/8" | PVC Plastic | Dark Gray | 00000000 | 000000 |
| 4 | 1 7/8" | 2 | 1 1/2" | PVC Plastic | Dark Gray | 00000000 | 000000 |
| 4 | 2 1/4" | 3 | 1 7/8" | PVC Plastic | Dark Gray | 00000000 | 000000 |
| 6 | 2 31/32" | 4 | 2 9/32" | PVC Plastic | Dark Gray | 00000000 | 000000 |
Aboveground Standard-Wall PVC Pipe
Fittings for Drain, Waste, and Vent
- For Use With: Water
- Max. Temperature: 140° F
- Specifications Met: ASTM D1784, ASTM D2665
- Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
- Flanges: Use Schedule 40 PVC Plastic
These Schedule 40 fittings are the industry standard for gravity-flow drain, waste, and vent (DWV) applications. Fittings are PVC, which has good corrosion resistance. They meet ASTM D1784 and ASTM D2665 specifications and testing requirements for material quality.
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
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.
Offset tees are also known as sanitary tees and eccentric tees. They have an offset branch so the line can drain. Use them for applications that require frequent cleaning and inspecting. Long offset tees are also known as long radius wyes.
Underground PVC Pipe Fittings for Drain, Waste, and Vent
- For Use With: Water
- Max. Temperature: 140° F
- Specifications Met: ASTM D2729, ASTM D3034
With thinner walls than Schedule 40 fittings, these are lighter in weight and have more space on the inside for high-flow applications, such as underground gravity-flow sewer and storm drainage lines. They are also known as SDR 35 fittings. Fittings are PVC, which has good corrosion resistance. Fittings meet ASTM D2729 and ASTM D3034 specifications and testing requirements for material quality.
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
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.
Socket-Connect Fittings for Plastic Tubing—Air and Water
- Temperature Range: 0° to 140° F
- Tubing: Use with PVC plastic
Made of soft PVC, these fittings flex to withstand high-vibration applications. Use them in place of rigid fittings to create a more flexible system. To connect, slide fittings onto tubing and secure with a clamp.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Socket Depth | Material | Color | Max. Pressure | Each | |
| 3/8" | 5/16" | PVC Plastic | Blue | 60 psi @ 72° F | 0000000 | 000000 |
| 1/2" | 3/8" | PVC Plastic | Blue | 60 psi @ 72° F | 0000000 | 00000 |
| 3/4" | 5/8" | PVC Plastic | Blue | 45 psi @ 72° F | 0000000 | 00000 |
| 1" | 27/32" | PVC Plastic | Blue | 20 psi @ 72° F | 0000000 | 00000 |
| 1 1/4" | 1 1/16" | PVC Plastic | Blue | 45 psi @ 72° F | 0000000 | 00000 |
| 2" | 1 13/16" | PVC Plastic | Blue | 20 psi @ 72° F | 0000000 | 000000 |
Chemical-Resistant Duct and Fittings
Made of PVC plastic to withstand acids, alkalies, salts, and other corrosive vapors and fumes. Use PVC pipe cement (not included) to secure components. Fittings have female ends with a slightly larger diameter to press-fit over duct.
For technical drawings and 3-D models, click on a part number.
Crush-Resistant Spiral Duct and Fittings
A spiral seam makes this duct strong and rigid. Fittings have male ends with a slightly smaller diameter to press-fit into duct.
PVC-coated steel combines the strength of steel with the corrosion resistance of plastic.
For technical drawings and 3-D models, click on a part number.
