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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Push-to-Connect Tube Fittings with Shut-Off for Air
- Temperature Range: 32° to 140° F
- Tubing: Fittings with Blue Release Ring: Use with firm or hard (Durometer 95A-95D) nylon plastic or polyurethane rubber
Fittings with Black Release Ring: Use with firm (Durometer 95A-45D) polyurethane rubber - Specifications Met: ISO 14743, except fittings with blue release ring
A built-in shut-off valve stops airflow when the fittings are disconnected from tubing. 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. 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.
For technical drawings and 3-D models, click on a part number.
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.
Release Ring | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Tube OD, mm | Pipe Size  | Material | Material | Color | Max. Pressure | For Hole Dia., mm | For Max. Wall Thick., mm | Each | |
BSPT Threads | |||||||||
| 4 | 1/4 | Nickel-Plated Brass | Plastic | Blue | 140 psi @ 72° F | 13 | 11 | 0000000 | 00000 |
| 6 | 1/4 | Nickel-Plated Brass | Plastic | Blue | 140 psi @ 72° F | 15 | 11 | 0000000 | 0000 |
| 8 | 3/8 | Nickel-Plated Brass | Plastic | Blue | 140 psi @ 72° F | 17 | 11 | 0000000 | 0000 |
| 10 | 3/8 | Nickel-Plated Brass | Plastic | Blue | 140 psi @ 72° F | 21 | 11 | 0000000 | 00000 |
Color-code your lines by snapping these rings over the release ring on push-to-connect fittings.
Moisture-Resistant Push-to-Connect Tube Fittings for Air and Water
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.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Lubricated Air, Water
- Temperature Range: 32° to 100° F
- Tubing: Use with firm (Durometer 90A-95A) nylon plastic or polyurethane rubber
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.
Release Ring | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Pipe Size | Material | Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Choose a Material | Each | |
BSPT Threads | |||||||||
| 4mm | 1/8 | Plastic | Gray | 140 psi @ 72° F | 13mm | 7mm | 00000000 | 00000 | |
| 4mm | 1/4 | Plastic | Gray | 140 psi @ 72° F | 13mm | 7mm | 00000000 | 0000 | |
| 6mm | 1/8 | Plastic | Gray | 140 psi @ 72° F | 15mm | 7mm | 00000000 | 0000 | |
| 6mm | 1/4 | Plastic | Gray | 140 psi @ 72° F | 15mm | 7mm | 00000000 | 0000 | |
| 6mm | 3/8 | Plastic | Gray | 140 psi @ 72° F | 15mm | 7mm | 00000000 | 0000 | |
| 8mm | 1/8 | Plastic | Gray | 140 psi @ 72° F | 17mm | 7mm | 00000000 | 00000 | |
| 8mm | 1/4 | Plastic | Gray | 140 psi @ 72° F | 17mm | 7mm | 00000000 | 00000 | |
| 8mm | 3/8 | Plastic | Gray | 140 psi @ 72° F | 17mm | 7mm | 00000000 | 00000 | |
| 10mm | 1/4 | Plastic | Gray | 140 psi @ 72° F | 21mm | 7mm | 00000000 | 0000 | |
| 10mm | 3/8 | Plastic | Gray | 140 psi @ 72° F | 21mm | 7mm | 00000000 | 00000 | |
| 12mm | 3/8 | Plastic | Gray | 140 psi @ 72° F | 23mm | 7mm | 00000000 | 00000 | |
| 12mm | 1/2 | Plastic | Gray | 140 psi @ 72° F | 23mm | 7mm | 00000000 | 00000 | |
| 16mm | 3/8 | Plastic | Gray | 140 psi @ 72° F | 29mm | 7mm | 00000000 | 00000 | |
| 16mm | 1/2 | Plastic | Gray | 140 psi @ 72° F | 29mm | 7mm | 00000000 | 00000 | |