Airtac PU Straight Fitting PU10
The AirTAC Airtac PU Straight Fitting PU10 is a genuine straight union for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeStraight union
- SeriesPU
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Temperature-20 to +70 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PU Straight Fitting PU10
The PU10 is an AirTAC PU straight union, a tube-to-tube fitting with no external thread at all. Both ends accept Dia 10 mm soft nylon or polyurethane tubing, so its job is to splice, extend or repair a 10 mm air line end to end without adding a male stud into the flow path.
It uses the same one-touch principle as the threaded P-series: push the tube into the chuck until it bottoms, and the stainless spring gasket and POM chuck grip it against the 0 to 1.0 MPa (0 to 10 kgf/cm2) working pressure; press the release ring to free it. Vacuum rating is -750 mmHg (10 Torr), proof pressure 1.5 MPa, and the working temperature span is -20 to +70 C. This is the resin line, not the metal BPC family, so it is not the 0.9 MPa / 150 C profile. The body arrives grey; a D suffix orders the black version.
Airtac PU Straight Fitting PU10 Technical Specifications
| Model | Airtac PU Straight Fitting PU10 |
|---|---|
| Type | Straight union |
| Series | PU |
| Connection | Push-in one-touch |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Applicable tubing | Soft nylon or polyurethane tube |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac PU Straight Fitting PU10
| PU | Straight union. |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| D | Black. Blank = grey. |
Fitting & Sealing Notes
- check Cut the tube square and clean before pushing it home, or the seal will leak.
- check Push until it stops, then pull back to check the chuck has gripped.
- check To release, press the collet ring fully in and pull the tube out.
- check Threaded parts arrive with sealant on the thread; M5 sizes use a sealing gasket.
- check Match the tube OD exactly - a 6 mm fitting will not hold 1/4" tube.
Where the Airtac PU Straight Fitting PU10 Is Used
Repairing a cut vacuum drop line
On a food packaging infeed, a 10 mm polyurethane vacuum line to the suction cup array often gets nicked by crate edges. Cutting out the damage and splicing a PU10 back in restores the line in minutes, and the -750 mmHg rating covers the hold-down vacuum without a leak path at the joint.
Extending a conveyor gate cylinder run
When a diverter gate cylinder on a sortation conveyor is repositioned, the factory 10 mm nylon run is usually too short. A PU10 lets you add a fresh length of Dia 10 tube without re-terminating at the valve manifold, keeping the full bore the gate cylinder was sized for.
Serviceable splices in machine rebuilds
During a press-shop fixture rebuild, technicians frequently shorten or re-route Dia 10 drop lines. Because the PU10 grip is released by the collar, a splice made today can be undone next year when the fixture changes, unlike a barbed insert secured with a permanent clamp.
Is the Airtac PU Straight Fitting PU10 the Right Part?
Your neighbours on the PU ladder are PU8 and PU12. Stepping down to PU8 saves panel space and suits lighter actuator loads, but it caps flow through the narrower bore; stepping up to PU12 lowers restriction on long runs feeding large-bore cylinders or multiple branches. PU unions only join equal sizes - if you need to change diameter, move to the PG different-diameter straight instead of forcing a mismatch.
Tube OD must match exactly on both legs: a Dia 10 union will not seal on 3/8 in or 12 mm tube, however close they look. Where the splice has to pass through a sheet-metal wall, the PM bulkhead union or PLM bulkhead male elbow is the right shape, not the PU.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
Airtac PU Straight Fitting PU10 FAQ
The PU10 joins two Dia 10 mm tubes with no thread. Working pressure is 0 to 1.0 MPa (0 to 10 kgf/cm2), it holds -750 mmHg (10 Torr) vacuum, proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. Tubing is soft nylon or polyurethane, and this is the resin profile, not the 0.9 MPa / 150 C metal BPC line.
No. PU unions are equal-size only; both chucks in a PU10 are cut for Dia 10 mm OD tubing and a 12 mm tube simply will not seat. To change diameter inline, use the PG different-diameter straight union, for example PG12-10, which is designed for exactly that transition and keeps the one-touch release on both ends.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard parts are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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