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Brass Low-Pressure Barbed Tube Fittings for Air and Water
Made of brass, these fittings resist corrosion from water and are more durable than plastic and aluminum fittings. Use them for low-pressure HVAC systems, drain lines, and other fluid transfer applications, as well as air lines where water vapor and condensate form. The barbs tightly grip tubing for a secure hold. For the best grip, make sure your tubing is squarely cut.
NPT adapters require thread sealant (not included) for a leak-tight seal.
NPTF (Dryseal) fittings are compatible with NPT threads.
UN/UNF (SAE Straight) male threads with gasket provide extra protection against leaks. Also known as O-ring boss threads.


(SAE Straight) Male
Threads with Gasket
- Temperature Range: NPT, UN/UNF (SAE Straight) Threads: -40° to 500° F
NPTF Threads: -65° to 75° F - Tubing: NPT, UN/UNF (SAE Straight) Threads: Use with firm (Durometer 85A) polyurethane rubber
NPTF Threads: Use with firm (Durometer 95A) polyurethane rubber
Inline tees are also known as branch tees.
For Tube ID | Pipe Size | Thread Size | Number of Barbs | Material | Gasket Material | Max. Pressure | Each | |
NPT Threads | ||||||||
---|---|---|---|---|---|---|---|---|
1/4" | 3/8 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 000000 |
3/8" | 1/4 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 00000 |
3/8" | 3/8 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 00000 |
3/8" | 1/2 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 00000 |
1/2" | 1/2 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 00000 |
NPTF Threads | ||||||||
0.17" | 1/16 | __ | Multiple | Brass | __ | 100 psi @ 72° F | 000000000 | 00000 |
0.17" | 1/8 | __ | Multiple | Brass | __ | 100 psi @ 72° F | 000000000 | 00000 |
1/4" | 1/8 | __ | Multiple | Brass | __ | 100 psi @ 72° F | 000000000 | 00000 |
1/4" | 1/4 | __ | Multiple | Brass | __ | 100 psi @ 72° F | 000000000 | 00000 |
UN/UNF (SAE Straight) Threads | ||||||||
1/16" | __ | 10-32 | Single | Brass | Buna-N Rubber | 125 psi @ 72° F | 00000000 | 0000 |
3/32" | __ | 10-32 | Single | Brass | Buna-N Rubber | 125 psi @ 72° F | 00000000 | 0000 |
1/8" | __ | 10-32 | Single | Brass | Buna-N Rubber | 125 psi @ 72° F | 00000000 | 0000 |
0.17" | __ | 10-32 | Single | Brass | Buna-N Rubber | 125 psi @ 72° F | 00000000 | 00000 |
3/16" | __ | 10-32 | Single | Brass | Buna-N Rubber | 125 psi @ 72° F | 00000000 | 00000 |
1/4" | __ | 10-32 | Single | Brass | Buna-N Rubber | 125 psi @ 72° F | 00000000 | 00000 |


(SAE Straight) Male
Threads with Gasket
- Temperature Range: -40° to 500° F
- Tubing: Use with firm (Durometer 85A) polyurethane rubber
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 ID | Pipe Size | Thread Size | Number of Barbs | Material | Gasket Material | Max. Pressure | Each | |
NPT Threads | ||||||||
---|---|---|---|---|---|---|---|---|
1/16" | 1/8 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 000000 |
3/32" | 1/8 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 00000 |
1/8" | 1/8 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 00000 |
0.17" | 1/8 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 00000 |
3/16" | 1/8 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 00000 |
1/4" | 1/8 | __ | Single | Brass | __ | 125 psi @ 72° F | 00000000 | 00000 |
UN/UNF (SAE Straight) Threads | ||||||||
1/16" | __ | 10-32 | Single | Brass | Buna-N Rubber | 125 psi @ 72° F | 00000000 | 00000 |
3/32" | __ | 10-32 | Single | Brass | Buna-N Rubber | 125 psi @ 72° F | 00000000 | 00000 |
1/8" | __ | 10-32 | Single | Brass | Buna-N Rubber | 125 psi @ 72° F | 00000000 | 00000 |

- Temperature Range: -65° to 75° F
- Tubing: Use with polyethylene plastic
Screw-on tees won’t budge under pressure or stress. To reduce the risk of movement or failure in lines, they secure with fasteners. Inline tees are also known as branch tees.
Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Tube ID | Pipe Size | Number of Barbs | Material | Max. Pressure | Mounting Fasteners Included | No. of | Dia. | Ctr.-to-Ctr. Wd. | Flange Wd. | Each | |
NPTF Threads | |||||||||||
0.17" | 1/8 | Multiple | Brass | 100 psi @ 72° F | No | 2 | 3/16" | 1" | 1 1/2" | 000000000 | 000000 |

- Temperature Range: -65° to 75° F
- Tubing: Use with firm (Durometer 95A) polyurethane rubber
Right-angle tees are also known as run tees.

- Temperature Range: -65° to 75° F
- Tubing: Use with polyethylene plastic
Right-angle tees are also known as run tees.
For Tube ID (A) | Number of Barbs (A) | Pipe Size (B) | Pipe Size (C) | Material | Max. Pressure | Each | |
NPTF Threads | |||||||
---|---|---|---|---|---|---|---|
0.17" | Multiple | 1/8 | 1/8 | Brass | 100 psi @ 72° F | 000000000 | 000000 |

- Temperature Range: See table
- Tubing: See table
For Tube | |||||||||
---|---|---|---|---|---|---|---|---|---|
For Tube ID | Number of Barbs | Material | Max. Pressure | Temp. Range, °F | Material | Hardness Rating | Hardness | Each | |
1/16" | Single | Brass | 125 psi @ 72° F | -40° to 500° | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
3/32" | Single | Brass | 125 psi @ 72° F | -40° to 500° | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
3/32" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
1/8" | Single | Brass | 125 psi @ 72° F | -40° to 500° | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
0.17" | Single | Brass | 125 psi @ 72° F | -40° to 500° | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
0.17" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
3/16" | Single | Brass | 125 psi @ 72° F | -40° to 500° | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
1/4" | Single | Brass | 125 psi @ 72° F | -40° to 500° | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
1/4" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
3/8" | Single | Brass | 125 psi @ 72° F | -40° to 500° | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
3/8" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
1/2" | Single | Brass | 125 psi @ 72° F | -40° to 500° | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |

- 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 (A) | Number of Barbs (A) | For Tube ID (B) | Number of Barbs (B) | Material | Max. Pressure | Each | |
0.17" | Multiple | 3/32" | Multiple | Brass | 100 psi @ 72° F | 000000000 | 00000 |
1/4" | Multiple | 3/32" | Multiple | Brass | 100 psi @ 72° F | 000000000 | 0000 |
1/4" | Multiple | 0.17" | Multiple | Brass | 100 psi @ 72° F | 000000000 | 0000 |
3/8" | Multiple | 0.17" | Multiple | Brass | 100 psi @ 72° F | 000000000 | 00000 |
3/8" | Multiple | 1/4" | Multiple | Brass | 100 psi @ 72° F | 000000000 | 00000 |

- Temperature Range: -40° to 500° F
- Tubing: Use with firm (Durometer 85A) polyurethane rubber
Inline wye connectors join parallel tubes to save space, making a compact layout. They’re also known as parallel-run tees.
For Tube ID | Number of Barbs | Material | Max. Pressure | Each | |
1/16" | Single | Brass | 125 psi @ 72° F | 00000000 | 000000 |
3/32" | Single | Brass | 125 psi @ 72° F | 00000000 | 00000 |
1/8" | Single | Brass | 125 psi @ 72° F | 00000000 | 00000 |
0.17" | Single | Brass | 125 psi @ 72° F | 00000000 | 00000 |
3/16" | Single | Brass | 125 psi @ 72° F | 00000000 | 00000 |
1/4" | Single | Brass | 125 psi @ 72° F | 00000000 | 00000 |
3/8" | Single | Brass | 125 psi @ 72° F | 00000000 | 00000 |
1/2" | Single | Brass | 125 psi @ 72° F | 00000000 | 00000 |

ID | OD | Gasket Material | Max. Pressure | Gasket Color | Pkg. Qty. | Pkg. | |
5/32" | 15/64" | Buna-N Rubber | 150 psi @ 72° F | Black | 25 | 0000000 | 00000 |
Aluminum Low-Pressure Barbed Tube Fittings for Air and Water
- For Use With: Air, Lubricated Air, Water
- Temperature Range: -40° to 230° F
- Tubing: Use with hard (Durometer 75A-60D) EVA plastic, polyethylene plastic, polyurethane rubber or PVDF plastic
Made of aluminum, these fittings are lighter in weight than other metal barbed tube fittings and have good corrosion resistance. The barb grips onto tubing, providing a secure hold with no clamp required.
Nickel-Plated Brass Low-Pressure Barbed Tube Fittings for Air and Water
The nickel plating on these brass fittings provides extra protection against corrosive environments. The plating won’t peel or chip, so the fittings keep a bright, polished appearance. The barbs grip onto tubing, providing a secure hold with no clamp required.
UN/UNF (SAE Straight) and BSPP male threads have an O-ring to protect against leaks. UN/UNF (SAE Straight) threads are also known as O-ring boss threads.

- Temperature Range: -20° to 160° F
- Tubing: Use with firm (Durometer 85A) polyurethane rubber
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.
Choose-a-Color Aluminum Low-Pressure Barbed Tube Fittings for Air and Water
- For Use With: Air, Lubricated Air, Water
- Temperature Range: -40° to 230° F
- Tubing: Use with hard (Durometer 75A-60D) EVA plastic, polyethylene plastic, polyurethane rubber or PVDF plastic
Color-code fittings for easy identification. Fittings are aluminum, which is lightweight with good corrosion resistance. The barb grips onto tubing, providing a secure hold with no clamp required.

For Tube ID | Material | Max. Pressure | Choose a Color | Each | |
1/16" | Anodized Aluminum | 125 psi @ 72° F | 00000000 | 00000 | |
1/8" | Anodized Aluminum | 125 psi @ 72° F | 00000000 | 0000 | |
0.17" | Anodized Aluminum | 125 psi @ 72° F | 00000000 | 0000 | |
1/4" | Anodized Aluminum | 125 psi @ 72° F | 00000000 | 00000 | |
3/8" | Anodized Aluminum | 125 psi @ 72° F | 00000000 | 00000 | |
1/2" | Anodized Aluminum | 125 psi @ 72° F | 00000000 | 00000 |