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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Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings
Made to tighter tolerances than other stainless steel pipe fittings, these are also known as instrumentation fittings. The male threads are rolled for extra strength in extreme-pressure applications. Fittings are commonly used to connect equipment in gas and hydraulic fluid lines. They are 316 stainless steel for excellent corrosion resistance. Right-angle tees are also known as run tees.
For technical drawings and 3-D models, click on a part number.
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | ||||
|---|---|---|---|---|
Pipe Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female | ||||
| 1/16 | 7,000 psi @ 72° F | 7,000 psi @ 300° F | 000000000 | 000000 |
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | ||||
|---|---|---|---|---|
| Pipe Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female × NPT Male | ||||
| 1/16 | 7,000 psi @ 72° F | 7,000 psi @ 300° F | 000000000 | 000000 |
High-Pressure Brass Threaded Pipe Fittings
These fittings have the strength to handle high-pressure applications. They are brass for good corrosion resistance.
Inline tees are also known as branch tees. Right-angle tees are also known as run tees.
NPTF (Dryseal) threads are compatible with NPT threads.
- For Use With: Air, Natural Gas, Oil, Water
Pipe Size | ||||
|---|---|---|---|---|
| (A) | (B) | Max. Pressure | Each | |
NPTF Female × NPTF Male | ||||
| 1/8 | 1/16 | 1,000 psi @ 72° F | 000000000 | 000000 |
- For Use With: Air, Natural Gas, Oil, Water
Pipe Size | ||||
|---|---|---|---|---|
| (A) | (B) | Max. Pressure | Each | |
NPT Female | ||||
| 1/8 | 1/16 | 1,000 psi @ 72° F | 000000000 | 000000 |
Push-to-Connect Tube Fittings for Air
- Temperature Range: 0° to 170° F
- Tubing: Use with firm (Durometer 95A-45D) polyethylene plastic or polyurethane rubber
- Specifications Met: ISO 14743, except polybutylene plastic fittings
Insert tubing into these fittings and an internal gripping ring and O-ring hold the tubing tight. They are also known as instant fittings. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings have good corrosion resistance.
Identification rings (sold separately) snap over the release ring so you can color-code your lines.
Clips (sold separately) align and organize your tubing and fittings.
Fittings with PTFE thread sealant offer extra protection against leaks.
For technical drawings and 3-D models, click on a part number.
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Inline tees are also known as branch tees.
| For Tube OD | Pipe Size | Tube Connection Material | Pipe Connection Material | Color | Release Ring Color | Max. Pressure | Features | Each | |
NPT Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 1/16 | Nylon Plastic | Nickel-Plated Brass | Black | Black | 290 psi @ 72° F | PTFE Thread Sealant | 00000000 | 000000 |
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Right-angle tees are also known as run tees.
| For Tube OD | Pipe Size | Tube Connection Material | Pipe Connection Material | Color | Release Ring Color | Max. Pressure | Features | Each | |
NPT Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 1/16 | Nylon Plastic | Nickel-Plated Brass | Black | Black | 290 psi @ 72° F | PTFE Thread Sealant | 00000000 | 000000 |
| For Tube OD | Material | Color | Each | |
| 1/8" | Nylon Plastic | Yellow | 00000000 | 00000 |
Moisture-Resistant Push-to-Connect Tube Fittings for Air and Water
- For Use With: Air, Lubricated Air, Water,
except Manifolds with Swivel: Air, Water - Temperature Range: 32° to 100° F
- Tubing: Use with firm (Durometer 90A-95A) nylon plastic or polyurethane rubber
These fittings won’t absorb moisture, so they’re good for water and high-humidity air applications. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. They have good corrosion resistance.
Nickel-plated brass fittings have better corrosion resistance than unfinished brass fittings.
Fittings with thread sealant offer extra protection against leaks.
For technical drawings and 3-D models, click on a part number.
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Inline tees are also known as branch tees.
Release Ring | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Pipe Size | Tube Connection Material | Color | Material | Color | Max. Pressure | Features | Choose a Pipe Connection Material | Each | |
NPT Threads | ||||||||||
| 1/8" | 1/16 | Polybutylene Plastic | Gray | Plastic | Orange | 140 psi @ 72° F | Acrylic Thread Sealant | 00000000 | 00000 | |
| 5/32" | 1/16 | Polybutylene Plastic | Gray | Plastic | Orange | 140 psi @ 72° F | Acrylic Thread Sealant | 00000000 | 0000 | |
| 1/4" | 1/16 | Polybutylene Plastic | Gray | Plastic | Orange | 140 psi @ 72° F | Acrylic Thread Sealant | 00000000 | 0000 | |
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Right-angle tees are also known as run tees.
Release Ring | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Pipe Size | Tube Connection Material | Color | Material | Color | Max. Pressure | Features | Choose a Pipe Connection Material | Each | |
NPT Threads | ||||||||||
| 1/8" | 1/16 | Polybutylene Plastic | Gray | Plastic | Orange | 140 psi @ 72° F | Acrylic Thread Sealant | 00000000 | 00000 | |
| 5/32" | 1/16 | Polybutylene Plastic | Gray | Plastic | Orange | 140 psi @ 72° F | Acrylic Thread Sealant | 00000000 | 0000 | |
| 1/4" | 1/16 | Polybutylene Plastic | Gray | Plastic | Orange | 140 psi @ 72° F | Acrylic Thread Sealant | 00000000 | 0000 | |
Brass Low-Pressure Barbed Tube Fittings for Air and Water
A brass body provides protection against corrosive environments. Fittings have barbs that grip onto tubing.
NPTF (Dryseal) fittings are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- Temperature Range: -65° to 75° F
- Tubing: Use with firm (Durometer 95A) polyurethane rubber
Inline tees are also known as branch tees.
| For Tube ID | Pipe Size | Number of Barbs | Material | Max. Pressure | Each | |
NPTF Threads | ||||||
|---|---|---|---|---|---|---|
| 0.17" | 1/16 | Multiple | Brass | 100 psi @ 72° F | 000000000 | 000000 |