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.
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 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 |
37° Flared Fittings for Stainless Steel Tubing
- Tubing: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
- Specifications Met: ISO 8434, SAE J514, except fittings with BSPP and BSPT threads meet SAE J514 only
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They withstand high pressure, so they’re often used in hydraulic applications. Made from 316 stainless steel, they resist corrosion from water and chemicals. A complete fitting requires a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
| For Tube OD | Pipe Size | Material | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/4" | 1/4 | 316 Stainless Steel | 6,000 psi @ 72° F | 1/16" | 21/64" | 000000000 | 000000 |
| 3/8" | 3/8 | 316 Stainless Steel | 6,000 psi @ 72° F | 9/16" | 27/64" | 000000000 | 00000 |
| 1/2" | 1/2 | 316 Stainless Steel | 6,000 psi @ 72° F | 3/4" | 7/16" | 000000000 | 000000 |
| 3/4" | 3/4 | 316 Stainless Steel | 4,500 psi @ 72° F | 1 1/16" | 7/16" | 000000000 | 000000 |
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
| For Tube OD | Material | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
| 1/4" | 316 Stainless Steel | 6,000 psi @ 72° F | 1/2" | 3/8" | 000000000 | 000000 |
| 3/8" | 316 Stainless Steel | 6,000 psi @ 72° F | 5/8" | 7/16" | 000000000 | 00000 |
| 1/2" | 316 Stainless Steel | 6,000 psi @ 72° F | 3/4" | 7/16" | 000000000 | 00000 |
| 5/8" | 316 Stainless Steel | 6,000 psi @ 72° F | 15/16" | 7/16" | 000000000 | 000000 |
| 3/4" | 316 Stainless Steel | 6,000 psi @ 72° F | 1 1/8" | 7/16" | 000000000 | 000000 |
| 1" | 316 Stainless Steel | 4,500 psi @ 72° F | 1 3/8" | 7/16" | 000000000 | 000000 |
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on stainless steel tubing that is flared to 37°. Sleeves are 316 stainless steel for excellent corrosion resistance. They are also known as ferrules.
Inch × metric sleeve adapters convert the fitting from inch to metric.
For Tube OD | ||||
|---|---|---|---|---|
| Inch | Metric, mm | Sleeve Material | Each | |
Inch | ||||
| 1/4" | __ | 316 Stainless Steel | 000000000 | 00000 |
| 3/8" | __ | 316 Stainless Steel | 000000000 | 0000 |
| 1/2" | __ | 316 Stainless Steel | 000000000 | 0000 |
| 5/8" | __ | 316 Stainless Steel | 000000000 | 00000 |
| 3/4" | __ | 316 Stainless Steel | 000000000 | 00000 |
| 1" | __ | 316 Stainless Steel | 000000000 | 00000 |
Inch × Metric | ||||
| 1/4" | 6 | 316 Stainless Steel | 000000000 | 00000 |
| 3/8" | 10 | 316 Stainless Steel | 000000000 | 00000 |
| 1/2" | 12 | 316 Stainless Steel | 000000000 | 00000 |
37° Flared Fittings with Thread Sealant for Stainless Steel Tubing
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range:
Adapters: -420° to 450° F
Sleeves and Nuts: -420° to 1,200° F - Tubing: Use with seamless or welded 304 or 316 stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
- Specifications Met: ISO 8434, SAE J514, except fittings with BSPT threads meet SAE J514 only
The male pipe threads on these fittings have a sealant applied for extra protection against leaks. Also known as JIC (Joint Industrial Council) fittings, they provide a tight metal-to-metal seal on tubing that is flared to 37°. They’re often used in hydraulic applications. Made from 316 stainless steel, these fittings have excellent corrosion resistance. A complete fitting requires a nut and a sleeve (ferrule) for each tube end—tighten the nut to create a secure seal that withstands high pressure. Nuts and sleeves are sold separately.
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.