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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Medium-Pressure Clamp-On Connectors
Create quick, liquid-tight connections in medium-pressure applications with these connectors. They join rigid pipe of the same or different materials. Connectors have a gasket that permits moderate movement and misalignment of pipe ends.
Compression connectors slide onto pipe and hand tighten with the end nuts. You may need to tighten over time. These connectors have a Buna-N rubber gasket that resists oil, as well as mild chemicals and water. Replace the gasket when it’s worn out, or swap it out for a gasket with different properties.
Black iron connectors have fair corrosion resistance.
For technical drawings and 3-D models, click on a part number.

- For Use With: Water
- Temperature Range: -20° to 180° F
- Specifications Met: ASTM A197
- For Pipe Material: Steel, PVC Plastic
For Pipe OD | For Pipe Size | Lg. | Pipe Connection Type | Max. Pressure | Gasket Material | Each | |
0.84" | 1/2 | 4 1/4" | Compression | 125 psi @ 72° F | Buna-N Rubber | 00000000 | 000000 |
1.05" | 3/4 | 4 7/16" | Compression | 125 psi @ 72° F | Buna-N Rubber | 00000000 | 00000 |
1.315" | 1 | 4 3/4" | Compression | 125 psi @ 72° F | Buna-N Rubber | 00000000 | 00000 |
1.66" | 1 1/4 | 4 3/4" | Compression | 125 psi @ 72° F | Buna-N Rubber | 00000000 | 00000 |
1.9" | 1 1/2 | 5 3/16" | Compression | 125 psi @ 72° F | Buna-N Rubber | 00000000 | 00000 |
2 3/8" | 2 | 5 3/8" | Compression | 125 psi @ 72° F | Buna-N Rubber | 00000000 | 00000 |
Cast Iron-to-PVC Pipe Adapters for Drain, Waste, and Vent
These adapters connect PVC waste pipe to cast iron pipe without adding bulk. Instead of securing pipes together from the outside like clamp-on couplings, these flexible adapters fit into cast iron pipe to create a tight compression seal. Adapters should fit tightly—tap with a mallet to install. Made of PVC, these fittings won't corrode when exposed to water.
For technical drawings and 3-D models, click on a part number.

- For Use With: Water
- Temperature Range: -30° to 140° F
- Specifications Met: ASTM D5926

- For Use With: Water
- Temperature Range: -30° to 140° F
- Specifications Met: ASTM D5926
Female | ||||||||
---|---|---|---|---|---|---|---|---|
Male Pipe Size | Pipe Size | For Pipe OD | Lg. | Material | Color | Max. Pressure | Each | |
3 | 2 | 3 1/2" | 1 41/64" | PVC Plastic | Black | 4 psi @ 72° F | 0000000 | 000000 |