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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.
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
Nylon Fittings: Water - Maximum Temperature: 140° F
Nylon Fittings: 180° F - Specifications Met: ASTM D1784, NSF/ANSI Standard 61 for Drinking Water
Nylon Fittings: ASTM D4066 - Flanges: Use Schedule 40 PVC Plastic
- Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
| Pipe Size (A) | Pipe Size (B) | Material | Color | Each | |
NPT Threads | |||||
|---|---|---|---|---|---|
| 3/8 | 1/4 | Nylon Plastic | Red | 0000000 | 00000 |
| 1/2 | 3/8 | Nylon Plastic | Red | 0000000 | 0000 |
| 3/4 | 1/2 | Nylon Plastic | Red | 0000000 | 0000 |
| 1 | 3/4 | Nylon Plastic | Red | 0000000 | 0000 |
| 1 1/4 | 1 | Nylon Plastic | Red | 0000000 | 0000 |
| 1 1/2 | 1 1/4 | Nylon Plastic | Red | 0000000 | 0000 |
| 2 | 1 1/2 | Nylon Plastic | Red | 0000000 | 0000 |
| 2 1/2 | 2 | Nylon Plastic | Red | 0000000 | 00000 |
| Non-Hardening Thread Sealants | 000000 | Each | 000000 |
Plastic Pipe Fittings for Gasoline
- For Use With: Gasoline
- Temperature Range: 32° to 160° F
Use these plastic fittings to connect gasoline fuel lines to machines and equipment. They have excellent corrosion resistance as well as high strength and impact resistance. Apply a non-hardening, plastic-compatible sealant to the male threads to prevent leaks. Tape or sealants with PTFE are not recommended for plastic-to-plastic threaded connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the fitting, then wrench-tighten one to two turns.
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.
| Pipe Size (A) | Pipe Size (B) | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 3/8 | 1/4 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 00000 |
| 1/2 | 1/4 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1/2 | 3/8 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 3/4 | 3/8 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 3/4 | 1/2 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1 1/4 | 1 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | 000000 |
| Pipe Size (A) | Pipe Size (B) | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 1/4 | 1/8 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 00000 |
| 3/8 | 1/8 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 3/8 | 1/4 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1/2 | 1/4 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1/2 | 3/8 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 3/4 | 1/8 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 3/4 | 1/4 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 3/4 | 3/8 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 3/4 | 1/2 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1 | 1/2 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1 | 3/4 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1 1/4 | 3/4 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1 1/4 | 1 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1 1/2 | 3/4 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1 1/2 | 1 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 1 1/2 | 1 1/4 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 2 | 1 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 00000 |
| 2 | 1 1/2 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 0000 |
| 3 | 2 | Nylon Plastic | White | 70 psi @ 72° F | 000000000 | 00000 |
| Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | 000000 |