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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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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.
Double-Straight Connectors, Tube
- Temperature Range: -40° to 500° F
- Tubing: Use with firm (Durometer 85A) polyurethane rubber
Double-straight connectors are also known as H-fittings. They connect parallel lines with just one fitting, so they’re ideal in crowded spots.
| For Tube ID | Number of Barbs | Straight Body Shape | Material | Max. Pressure | Lg. | Each | |
| 1/16" | Single | Round | Brass | 125 psi @ 72° F | 5/8" | 00000000 | 000000 |
| 3/32" | Single | Round | Brass | 125 psi @ 72° F | 41/64" | 00000000 | 00000 |
| 1/8" | Single | Round | Brass | 125 psi @ 72° F | 27/32" | 00000000 | 00000 |
| 0.17" | Single | Round | Brass | 125 psi @ 72° F | 15/16" | 00000000 | 00000 |
| 3/16" | Single | Round | Brass | 125 psi @ 72° F | 1" | 00000000 | 00000 |
| 1/4" | Single | Round | Brass | 125 psi @ 72° F | 1 5/16" | 00000000 | 00000 |
| 3/8" | Single | Round | Brass | 125 psi @ 72° F | 1 33/64" | 00000000 | 00000 |