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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How to Measure Threaded Pipe Size
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High-Temperature PTFE Pipe Fittings for Chemicals
Extreme temperatures are no problem for these fittings—they’re made of PTFE, so they can withstand a wider temperature range than any of our other plastic pipe fittings for chemicals. They have the chemical resistance to stand up to acid and solvents. Fittings have thick, Schedule 80 walls for heavy duty industrial applications. The material won’t leach contaminates into the line, so these fittings are commonly used in high-purity processes, such as semiconductor and clean room applications. They have a super-smooth interior for unrestricted flow. 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. Fittings meet ASTM D1710 specifications and testing requirements for material quality.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local VOC (Volatile Organic Compounds) regulations.
For technical drawings and 3-D models, click on a part number.

- For Use With: Deionized Water, Hydrochloric Acid, Solvents
- Temperature Range: -450° to 550° F
- Specifications Met: ASTM D1710
- Pipe Nipples and Pipe: Use Schedule 80 PTFE Plastic
- Flanges: Use Class 150 PTFE Plastic
Pipe Size (A) | Pipe Size (B) | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
---|---|---|---|---|---|---|
1/4 | 1/8 | PTFE Plastic | White | 90 psi @ 72° F | 000000000 | 000000 |
3/8 | 1/8 | PTFE Plastic | White | 60 psi @ 72° F | 000000000 | 00000 |
3/8 | 1/4 | PTFE Plastic | White | 60 psi @ 72° F | 000000000 | 00000 |
1/2 | 1/4 | PTFE Plastic | White | 60 psi @ 72° F | 000000000 | 00000 |
1/2 | 3/8 | PTFE Plastic | White | 60 psi @ 72° F | 000000000 | 00000 |
3/4 | 3/8 | PTFE Plastic | White | 50 psi @ 72° F | 000000000 | 000000 |
3/4 | 1/2 | PTFE Plastic | White | 50 psi @ 72° F | 000000000 | 000000 |
1 | 1/2 | PTFE Plastic | White | 35 psi @ 72° F | 000000000 | 000000 |
1 | 3/4 | PTFE Plastic | White | 35 psi @ 72° F | 000000000 | 000000 |
Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |

- For Use With: Deionized Water, Hydrochloric Acid, Solvents
- Temperature Range: -450° to 550° F
- Specifications Met: ASTM D1710
- Pipe Nipples and Pipe: Use Schedule 80 PTFE Plastic
- Flanges: Use Schedule 150 PTFE Plastic

- For Use With: Deionized Water, Hydrochloric Acid, Solvents
- Temperature Range: -450° to 550° F
- Specifications Met: ASTM D1710
- Pipe Nipples and Pipe: Use Schedule 80 PTFE Plastic
- Flanges: Use Class 150 PTFE Plastic
Pipe Size (A) | Pipe Size (B) | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
---|---|---|---|---|---|---|
1/4 | 1/8 | PTFE Plastic | White | 90 psi @ 72° F | 000000000 | 000000 |
3/8 | 1/8 | PTFE Plastic | White | 60 psi @ 72° F | 000000000 | 00000 |
3/8 | 1/4 | PTFE Plastic | White | 60 psi @ 72° F | 000000000 | 00000 |
1/2 | 1/4 | PTFE Plastic | White | 60 psi @ 72° F | 000000000 | 00000 |
1/2 | 3/8 | PTFE Plastic | White | 60 psi @ 72° F | 000000000 | 00000 |
3/4 | 3/8 | PTFE Plastic | White | 50 psi @ 72° F | 000000000 | 00000 |
3/4 | 1/2 | PTFE Plastic | White | 50 psi @ 72° F | 000000000 | 00000 |
1 | 1/2 | PTFE Plastic | White | 35 psi @ 72° F | 000000000 | 00000 |
1 | 3/4 | PTFE Plastic | White | 35 psi @ 72° F | 000000000 | 00000 |
Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |

- For Use With: Deionized Water, Hydrochloric Acid, Solvents
- Temperature Range: -450° to 550° F
- Specifications Met: ASTM D1710
- Pipe Nipples and Pipe: Use Schedule 80 PTFE Plastic
- Flanges: Use Class 150 PTFE Plastic
Right-Angle Flow Rectangular Manifolds
Distribute air or fluid to multiple locations from a single supply source with these manifolds. They are also known as headers. They have mounting holes, so you can mount from the top or side.
PTFE manifolds have the best chemical and corrosion resistance of all the plastic and metal manifolds we offer, so they’re the best choice for acids and other highly corrosive substances. Do not use with deonized water at temperatures above 120° F.
Use a plug (sold separately) to close off any unused inlets and outlets.
For technical drawings and 3-D models, click on a part number.

- For Use With: Acetic Acid, Acetone, Bleach, Deionized Water, Hydrochloric Acid, Nitric Acid, Phosphoric Acid, Sulfuric Acid
- Temperature Range: -20° to 180° F
- Maximum Pressure: 120 psi @ 72° F
No. of Outlets | Inlet Pipe Size | Outlet Pipe Size | Lg. | Wd. | Ht. | Outlet Ctr.-to-Ctr. | Color | Each | |
Outlets on One Side—Standard Outlet Spacing | |||||||||
---|---|---|---|---|---|---|---|---|---|
2 | 1/4 | 1/8 | 1 3/4" | 1" | 1" | 3/4" | White | 0000000 | 000000 |
2 | 3/8 | 1/4 | 2 3/8" | 1 1/4" | 1 1/4" | 7/8" | White | 0000000 | 00000 |
2 | 1/2 | 3/8 | 2 3/4" | 1 1/2" | 1 1/2" | 1" | White | 0000000 | 00000 |
4 | 1/4 | 1/8 | 3 1/4" | 1" | 1" | 3/4" | White | 0000000 | 00000 |
4 | 3/8 | 1/4 | 4 1/8" | 1 1/4" | 1 1/4" | 7/8" | White | 0000000 | 00000 |
4 | 1/2 | 3/8 | 4 3/4" | 1 1/2" | 1 1/2" | 1" | White | 0000000 | 000000 |