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.
More
Multiline Quick-Disconnect Tube Couplings for Air
Don’t get your lines crossed—use one of these couplings to quickly connect or disconnect multiple tubes at once. They keep tubes organized and optimize space in tight spots. Often used in robotics, these couplings are ideal for complex pneumatic systems.
Through-wall couplings allow you to connect and disconnect air lines on a panel or machine. This is useful when you are going to transport and reconnect your equipment on site.
Barbed-connect fittings are for soft tubing. Push-to-connect fittings are for firm and hard tubing. Also known as instant fittings. To connect to tubing, insert the tube into the fitting—an internal gripping ring and O-ring hold the fitting in place. To disconnect, push on the release ring and pull the tubing out of the fitting.
Keyed couplings prevent mixing and matching the wrong lines, since they’ll only connect with a plug or socket that is keyed the same.
For a complete coupling, order a plug and a socket with the same coupling size.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: 100 psi @ 72° F
- Temperature Range: -40° to 180° F
- Tubing: Use with soft or firm (Durometer 45A-90A) polyurethane rubber or PVDF plastic
To connect the coupling, slide the latch to the lock position. To disconnect, slide the latch to the open position. Made of plastic, these couplings are lighter in weight than brass couplings.
To install in a panel, machinery, or bulkhead, add a through-wall adapter ring (sold separately).
Tube Couplings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Mated | Through-Wall Adapter Rings | |||||||||
| For Tube ID | No. of Connections | Material | Max. Vacuum | OD | Lg. | Features | Each | Each | ||
Plugs | ||||||||||
| 1/16" | 10 | Acetal Plastic | 24 in. of Hg @ 72° F | 1 57/64" | 1 29/64" | Keyed Connections | 0000000 | 000000 | 0000000 | 000000 |
| 1/8" | 10 | Acetal Plastic | 24 in. of Hg @ 72° F | 1 57/64" | 1 39/64" | Keyed Connections | 0000000 | 00000 | 0000000 | 00000 |
Sockets | ||||||||||
| 1/16" | 10 | Acetal Plastic | 24 in. of Hg @ 72° F | 1 57/64" | 1 29/64" | Keyed Connections | 0000000 | 00000 | 0000000 | 00000 |
| 1/8" | 10 | Acetal Plastic | 24 in. of Hg @ 72° F | 1 57/64" | 1 39/64" | Keyed Connections | 0000000 | 00000 | 0000000 | 00000 |
Sets | ||||||||||
| 1/16" | 10 | Acetal Plastic | 24 in. of Hg @ 72° F | 1 57/64" | 1 29/64" | Keyed Connections | 0000000 | 00000 | 0000000 | 00000 |
| 1/8" | 10 | Acetal Plastic | 24 in. of Hg @ 72° F | 1 57/64" | 1 39/64" | Keyed Connections | 0000000 | 00000 | 0000000 | 00000 |
- Maximum Pressure: 145 psi @ 72° F
- Temperature Range: 25° to 140° F
- Tubing: Use with firm or hard (Durometer 50D-70D, Durometer 91A-97A) FEP plastic, nylon plastic, PFA plastic, or polyurethane rubber
To connect the coupling, tighten the included clamp bolts using a L-key (not included). Loosen the clamp bolts to disconnect. Made of brass, these couplings are more durable than plastic couplings and have good corrosion resistance.
Mated | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Tube OD, mm | No. of Connections | Material | Color | Max. Vacuum | Lg. | Wd. | Ht. | Each | |
| 4 | 10 | Nickel-Plated Brass | Gray | 29 in. of Hg @ 72° F | 4 31/64" | 1 57/64" | 1 55/64" | 0000000 | 000000 |
| 6 | 10 | Nickel-Plated Brass | Gray | 29 in. of Hg @ 72° F | 4 31/64" | 1 57/64" | 1 55/64" | 0000000 | 00000 |
Mated | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD, mm | No. of Connections | Material | Color | Max. Vacuum | Lg. | Wd. | Ht. | For Hole Wd. | For Hole Ht. | For Max. Wall Thick. | Each | |
| 4 | 10 | Nickel-Plated Brass | Gray | 29 in. of Hg @ 72° F | 4 31/64" | 1 57/64" | 1 55/64" | 4 19/64" | 1 25/32" | 3/16" | 0000000 | 000000 |
| 6 | 10 | Nickel-Plated Brass | Gray | 29 in. of Hg @ 72° F | 4 31/64" | 1 57/64" | 1 55/64" | 4 19/64" | 1 25/32" | 3/16" | 0000000 | 00000 |