How to Measure Threaded Pipe Size
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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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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
Clamps for Easy-Access CPVC Pipe Fittings for Chemicals
- For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Hydrochloric Acid, Phosphoric Acid, Salt Water, Sodium Hydroxide, Sulfuric Acid (80%), Water
- Temperature Range: 32° to 200° F
- Specifications Met: ASTM D1784, ASTM F441
- Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
Use these clamps to connect easy-access CPVC pipe fittings and pipe. Clamps are enamel-coated iron for excellent strength and durability. They have a two-piece housing that can remain intact for installation. Clamps are also known as Victaulic clamps. They meet ASTM D1784 and ASTM F441 specifications and testing requirements for material quality.
For technical drawings and 3-D models, click on a part number.
Clamp connectors let you connect CPVC grooved-end pipe fittings and pipe.
Clamp adapters let you connect CPVC grooved-end pipe fittings and pipe to metal grooved-end pipe fittings and pipe.
Clamp reducers allow you to connect CPVC grooved-end pipe fittings and pipe and transition from a larger pipe size to a smaller pipe size.
For Pipe Size | For Pipe OD | Material | Color | Gasket Material | Max. Pressure | Each | |
3 × 2 | 3 1/2" × 2 3/8" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | 0000000 | 000000 |
4 × 2 | 4 1/2" × 2 3/8" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | 0000000 | 000000 |
4 × 3 | 4 1/2" × 3 1/2" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | 0000000 | 000000 |
Easy-Access CPVC Pipe Fittings for Chemicals
- For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Hydrochloric Acid, Phosphoric Acid, Salt Water, Sodium Hydroxide, Sulfuric Acid (80%), Water
- Temperature Range: 32° to 200° F
- Specifications Met: ASTM D1784
- Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
Also known as Victaulic fittings, these have grooved ends that connect to pipe with a clamp, so you can access your chemical process line for routine maintenance. Fittings are CPVC, which has excellent chemical resistance to withstand a variety of salt solutions, acids, and other harsh substances. They are comparable to Corzan. Fittings meet ASTM D1784 specifications and testing requirements for material quality.
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.
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a CPVC primer and cement (also known as solvent weld).
Inline tees are also known as branch tees.
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Clamp connectors let you connect CPVC grooved-end pipe fittings and pipe.
For Pipe Size | For Pipe OD | Material | Color | Gasket Material | Max. Pressure | Specifications Met | Each | |
2 | 2 3/8" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 000000 |
3 | 3 1/2" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 00000 |
4 | 4 1/2" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 00000 |
Clamp adapters let you connect CPVC grooved-end pipe fittings and pipe to metal grooved-end pipe fittings and pipe.
Clamp reducers allow you to connect CPVC grooved-end pipe fittings and pipe and transition from a larger pipe size to a smaller pipe size.
For Pipe Size | For Pipe OD | Material | Color | Gasket Material | Max. Pressure | Specifications Met | Each | |
3 × 2 | 3 1/2" × 2 3/8" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 000000 |
4 × 2 | 4 1/2" × 2 3/8" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 000000 |
4 × 3 | 4 1/2" × 3 1/2" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 000000 |
Gravity-Flow CPVC Pipe Fittings for Corrosive Chemical Waste
- For Use With: Hydrochloric Acid, Nitric Acid, Salt Water, Sulfuric Acid
- Temperature Range: 40° to 200° F
- Specifications Met: ASTM F2618, IAPMO Certified, NSF/ANSI 14, UL 94 V-0
Made of CPVC, these fittings have better chemical resistance than ABS plastic gravity-flow fittings and can stand up to highly-corrosive acids and other harsh substances. They meet NSF/ANSI 14 requirements for use in corrosive waste gravity-flow systems. Fittings are comparable to Corzan. They meet UL 94 V-0 for flame retardance and ASTM F2618 specifications and testing requirements for material quality. They are IAPMO certified to comply with the International Association for Plumbing and Mechanical Officials product performance standards and the Uniform Plumbing Code (UPC) for installation and repair of plumbing systems.
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a CPVC primer and cement (also known as solvent weld).
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.
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 |
Plastic Push-to-Connect Tube Fittings for Chemicals
- For Use With: Inch: Acetic Acid, Alcohol, Arsenic Acid, Benzoic Acid, Fluoboric Acid, Hydrochloric Acid, Nitric Acid, Sodium Carbonate, Sulfuric Acid
Metric: Acetic Acid, Alcohol, Arsenic Acid, Benzoic Acid, Fluoboric Acid, Sodium Carbonate, Sulfuric Acid - Temperature Range: Inch: 0° to 270° F
Metric: 32° to 175° F - Tubing: Use with hard (Durometer 55D-60D) FEP plastic
Also known as instant fittings, these chemical-resistant plastic fittings connect to tubing with a push, and an internal gripping ring and fluoroelastomer O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting.
PVDF fittings offer excellent chemical resistance, and can be used with hydrochloric acid and nitric acid. They withstand temperatures up to 270° F, higher than other push-to-connect fittings for chemicals. They are produced in a clean room and are bagged individually to prevent dirt and moisture from contaminating the inside. PVDF is also known as Kynar.
For technical drawings and 3-D models, click on a part number.
For Tube OD (A) | For Tube OD (B) | Material | Color | Release Ring Color | Max. Pressure | Each | |
3/8" | 1/4" | PVDF Plastic | Black | Gray | 300 psi @ 72° F | 0000000 | 00000 |
For Tube OD (Push to Connect) | For Tube OD (Flared) | Material | Color | Release Ring Color | Max. Pressure | Each | |
3/8" | 1/4" | PVDF Plastic | Black | Gray | 300 psi @ 72° F | 00000000 | 000000 |
For Tube OD (A) | For Tube OD (B) | Material | Color | Release Ring Color | Max. Pressure | Each | |
3/8" | 1/4" | PVDF Plastic | Black | Gray | 300 psi @ 72° F | 0000000 | 00000 |
Inline tees are also known as branch tees.
For Tube OD (A) | For Tube OD (B) | Material | Color | Release Ring Color | Max. Pressure | Each | |
3/8" | 1/4" | PVDF Plastic | Black | Gray | 300 psi @ 72° F | 0000000 | 000000 |
Compression Fittings for Plastic Tubing—Chemicals
- For Use With: PFA Plastic: Hydrochloric Acid, Sulfuric Acid
PTFE Plastic: Alcohol, Ammonia, Benzoic Acid, Bleach, Bromine, Coolant, Fluoboric Acid, Hydrochloric Acid, Hydrofluoric Acid, Nitric Acid, Organic Solvents, Sodium Carbonate, Sulfuric Acid - Temperature Range: PFA Plastic: 0° to 350° F
PTFE Plastic: -40° to 185° F - Tubing: PFA Plastic: Use with hard (Durometer 50D-65D) PFA or PTFE plastic
PTFE Plastic: Use with hard (Durometer 60D) PFA or PTFE plastic
A sleeve (ferrule) compresses the tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings. Fittings that include a gripper sleeve on the tubing create an even tighter seal.
PFA fittings stand up to harsh substances. They’re made through a melting process. PTFE fittings are highly resistant to most acids, alcohols, detergents, and solvents. They’re made by machining. Their nut is made of PVDF, which is resistant to halogens such as chlorine and bromine, strong acids such as hydrofluoric and nitric acids, and organic solvents.
For technical drawings and 3-D models, click on a part number.
For Tube OD (A) | For Tube OD (B) | Material | Color | Max. Pressure | Each | |
1/4" | 1/8" | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 0000000 |
3/8" | 1/4" | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
1/2" | 1/8" | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
1/2" | 1/4" | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
1/2" | 3/8" | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
3/4" | 1/2" | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
6mm | 4mm | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 000000 |
10mm | 6mm | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 000000 |
10mm | 8mm | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 000000 |