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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CPVC Pipe Fittings for Hot Water

Made of CPVC, these fittings can handle high temperatures. They have thick, strong walls to handle heavy duty industrial plumbing and water supply applications, such as water processing and waste water treatment. They also have good corrosion resistance. These fittings are comparable to Corzan. Some meet ASTM D1784 specifications and testing requirements for material quality.
Fittings for drinking water meet NSF/ANSI Standard 61.
Schedule 80 fittings have thick, strong walls for heavy duty, industrial applications.
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 regulatory limits on VOCs (Volatile Organic Compounds).
For technical drawings and 3-D models, click on a part number.

- For Use With: Calcium Chloride, Deionized Water, Drinking Water, Hydrochloric Acid (25%), Phosphoric Acid (85%), Salt Water, Sodium Hydroxide (50%), Sulfuric Acid (75%), Water
- Maximum Temperature: 180° F
- Specifications Met: ASTM D1784, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
- Flanges: Use Class 150 CPVC Plastic
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a CPVC primer and cement (also known as solvent weld).
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall, tank, or panel to create an inlet or outlet for faucets, pipes, and spigots.
Pipe Size | Socket Depth | For Hole Dia. | For Max. Wall Thick. | Material | Gasket Material | Schedule | Color | Max. Pressure | Each | |
1/2 | 29/32" | 1 3/8" | 1 5/64" | CPVC Plastic | EPDM Rubber | 80 | Light Gray | 150 psi @ 72° F | 00000000 | 000000 |
3/4 | 1 1/64" | 1 5/8" | 1 5/64" | CPVC Plastic | EPDM Rubber | 80 | Light Gray | 150 psi @ 72° F | 00000000 | 00000 |
1 | 1 9/64" | 1 7/8" | 1 5/64" | CPVC Plastic | EPDM Rubber | 80 | Light Gray | 150 psi @ 72° F | 00000000 | 00000 |
1 1/4 | 1 17/64" | 2 5/8" | 1" | CPVC Plastic | EPDM Rubber | 80 | Light Gray | 150 psi @ 72° F | 00000000 | 00000 |
1 1/2 | 1 25/64" | 2 5/8" | 1" | CPVC Plastic | EPDM Rubber | 80 | Light Gray | 150 psi @ 72° F | 00000000 | 00000 |
2 | 1 33/64" | 3 1/4" | 1" | CPVC Plastic | EPDM Rubber | 80 | Light Gray | 150 psi @ 72° F | 00000000 | 00000 |
3 | 1 57/64" | 4 1/2" | 1 1/64" | CPVC Plastic | EPDM Rubber | 80 | Light Gray | 150 psi @ 72° F | 00000000 | 000000 |
4 | 2 17/64" | 5 3/4" | 1 29/64" | CPVC Plastic | EPDM Rubber | 80 | Light Gray | 150 psi @ 72° F | 00000000 | 000000 |
Pipe Cement for Max. Pipe Size 6 | 00000000 | Each | 000000 |

- For Use With:
Fittings with Neoprene Rubber Gaskets: Drinking Water, Water
All other fittings: Acetic Acid (10%), Calcium Chloride, Deionized Water, Hydrochloric Acid (25%), Phosphoric Acid, Salt Water, Sodium Hydroxide (50%), Sulfuric Acid (75%), Water - Maximum Temperature:
Fittings with Neoprene Rubber Gaskets: 200° F
All other fittings: 180° F - Specifications Met:
Fittings with Neoprene Rubber Gaskets: ASTM D1784, NSF/ANSI 61
All other fittings: ASTM D1784 - Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
- Flanges: Use Class 150 CPVC Plastic
To prevent leaks in threaded connections, apply a non-hardening, plastic-compatible sealant to the male threads. 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.
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall, tank, or panel to create an inlet or outlet for faucets, pipes, and spigots.
Pipe Size | For Hole Dia. | For Max. Wall Thick. | Material | Gasket Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||||
---|---|---|---|---|---|---|---|---|
1/2 | 1 3/8" | 2 1/16" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 000000 |
3/4 | 1 5/8" | 2 1/16" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 00000 |
1 | 1 7/8" | 2 1/16" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 00000 |
1 1/4 | 2 21/32" | 2" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 00000000 | 00000 |
1 1/2 | 2 5/8" | 2" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 00000 |
2 | 3 1/4" | 2" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 00000 |
3 | 4 1/2" | 2 1/8" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 00000000 | 000000 |
4 | 5 3/4" | 3 1/4" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 00000000 | 000000 |

- For Use With:
Fittings with Neoprene Rubber Gaskets: Drinking Water, Water
All other fittings: Acetic Acid (10%), Calcium Chloride, Deionized Water, Hydrochloric Acid (25%), Phosphoric Acid, Salt Water, Sodium Hydroxide (50%), Sulfuric Acid (75%), Water - Maximum Temperature:
Fittings with Neoprene Rubber Gasket: 200° F
All other fittings: 180° F - Specifications Met:
Fittings with Neoprene Rubber Gaskets: ASTM D1784, NSF/ANSI 61
All other fittings: ASTM D1784 - Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
- Flanges: Use Class 150 CPVC Plastic
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a CPVC primer and cement (also known as solvent weld).
To prevent leaks in threaded connections, apply a non-hardening, plastic-compatible sealant to the male threads. 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.
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall, tank, or panel to create an inlet or outlet for faucets, pipes, and spigots.
Pipe Size | Socket Depth | For Hole Dia. | For Max. Wall Thick. | Material | Gasket Material | Color | Max. Pressure | Each | |
NPT Threads | |||||||||
---|---|---|---|---|---|---|---|---|---|
1/2 | 29/32" | 1 3/8" | 2 1/16" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 000000 |
3/4 | 1 1/64" | 1 5/8" | 2 1/16" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 00000 |
1 | 1 9/64" | 1 7/8" | 2 1/16" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 00000 |
1 1/4 | 1 17/64" | 2 5/8" | 2" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 00000 |
1 1/2 | 1 17/64" | 2 5/8" | 2" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 00000 |
2 | 1 25/64" | 3 1/4" | 2" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 00000 |
3 | 1 57/64" | 4 1/2" | 2 1/8" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 000000 |
4 | 2 17/64" | 5 3/4" | 2 7/16" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 000000 |
6 | 3 1/32" | 8 1/16" | 3 1/4" | CPVC Plastic | EPDM Rubber | Light Gray | 150 psi @ 72° F | 000000000 | 000000 |
UV-Resistant Polypropylene Pipe Fittings for Chemicals
Made of polypropylene, these fittings won’t deteriorate when exposed to the damaging effects of ultraviolet light and are suitable to use outdoors. They have the chemical resistance to withstand a wide variety of acids, solvents, and other harsh substances. 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.

- For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Hydrochloric Acid (25%), Nitric Acid (10%), Phosphoric Acid (85%), Salt Water, Sodium Hydroxide (50%), Sulfuric Acid (75%), Water
- Temperature Range: 40° to 180° F
- Pipe Nipples and Pipe: Use Schedule 80 Polypropylene Plastic
- Flanges: Use Class 150 Polypropylene Plastic
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall, tank, or panel to create an inlet or outlet for faucets, pipes, and spigots. They are for use on flat and curved surfaces.
Pipe Size | For Hole Dia. | For Max. Wall Thick. | Material | Color | Gasket Material | Max. Pressure | Each | |
NPT Threads | ||||||||
---|---|---|---|---|---|---|---|---|
1/2 | 1 3/8" | 2 1/16" | Polypropylene Plastic | White | EPDM Rubber | 150 psi @ 72° F | 000000000 | 000000 |
3/4 | 1 5/8" | 2 1/16" | Polypropylene Plastic | White | EPDM Rubber | 150 psi @ 72° F | 000000000 | 00000 |
1 | 1 7/8" | 2 1/16" | Polypropylene Plastic | White | EPDM Rubber | 150 psi @ 72° F | 000000000 | 00000 |
1 1/4 | 2 5/8" | 2" | Polypropylene Plastic | White | EPDM Rubber | 150 psi @ 72° F | 000000000 | 00000 |
1 1/2 | 2 5/8" | 2" | Polypropylene Plastic | White | EPDM Rubber | 150 psi @ 72° F | 000000000 | 00000 |
2 | 3 1/4" | 2" | Polypropylene Plastic | White | EPDM Rubber | 150 psi @ 72° F | 000000000 | 000000 |
3 | 4 1/2" | 2 1/8" | Polypropylene Plastic | White | EPDM Rubber | 150 psi @ 72° F | 000000000 | 000000 |
4 | 5 3/4" | 2 7/16" | Polypropylene Plastic | White | EPDM Rubber | 150 psi @ 72° F | 000000000 | 000000 |
Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |
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: -70° to 400° F
- Specifications Met: ASTM D1710
- Pipe Nipples and Pipe: Use Schedule 80 PTFE Plastic
- Flanges: Use Class 150 PTFE Plastic
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall, tank, or panel to create an inlet or outlet for faucets, pipes, and spigots. They are for use on flat and curved surfaces.
Pipe Size | For Hole Dia. | For Max. Wall Thick. | Material | Color | Gasket Material | Max. Pressure | Each | |
NPT Threads | ||||||||
---|---|---|---|---|---|---|---|---|
1/4 | 1 3/16" | 1/2" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 60 psi @ 72° F | 0000000 | 0000000 |
3/8 | 1 1/4" | 1/2" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 60 psi @ 72° F | 0000000 | 000000 |
1/2 | 1 1/2" | 5/8" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 60 psi @ 72° F | 0000000 | 000000 |
3/4 | 1 13/16" | 3/4" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 30 psi @ 72° F | 0000000 | 000000 |
1 | 2 1/16" | 3/4" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 30 psi @ 72° F | 0000000 | 000000 |
2 | 3 1/8" | 7/8" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 30 psi @ 72° F | 0000000 | 000000 |
Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |