Airtac PU Straight Fitting PU10D
The AirTAC Airtac PU Straight Fitting PU10D 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 PU10D
The PU10D is an AirTAC PU straight union, a tube-to-tube one-touch fitting that joins two lengths of Dia 10 mm soft nylon or polyurethane tubing in a straight line with no thread involved. Push the tube into each end and the stainless spring gasket and chuck grip the OD; press the release ring to free it. Because there is no threaded stud, no sealant and no wrench are needed - a plain push makes the joint.
This is the resin one-touch profile: 0 to 1.0 MPa working pressure, 1.5 MPa proof pressure, -750 mmHg vacuum, and -20 to 70 C. The D suffix makes the union body black rather than the standard grey, which matters on dark machine frames where grey fittings stand out. The 10 mm bore is the second-largest size in the PU ladder, so it suits trunk runs feeding cylinders and valves with real air demand rather than small pilot lines.
Airtac PU Straight Fitting PU10D Technical Specifications
| Model | Airtac PU Straight Fitting PU10D |
|---|---|
| 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 PU10D
| 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 PU10D Is Used
Splicing a cut air drop on a packaging line
When a 10 mm nylon drop to a carton-sealing cylinder is cut short or damaged, a PU10D butt-splices the two ends straight without re-routing the whole run or opening a junction box.
Extending a feed to a CNC fixture clamp
On a machining centre fixture, the clamp circuit often needs a longer reach than the pre-cut tube allows. A black PU10D union extends the 10 mm line invisibly against dark machine castings.
Repairing cab air lines on commercial vehicles
Trailer and truck cab pneumatic runs in polyurethane are exposed to flex and abrasion; a push-in Dia 10 union restores a severed section at the roadside with hand tools only.
Is the Airtac PU Straight Fitting PU10D the Right Part?
Step down to Dia 8 (PU8D) for lighter actuator circuits and lower air consumption, or up to Dia 12 (PU12D) when the run feeds a main drop or a large-bore cylinder. The union bore changes the flow capacity with the tube, so keep the union OD equal to the tubing it joins - a Dia 10 union will not seat 1/4 inch or 3/8 inch tube, only 10 mm.
If the line has to pass through a panel or machine wall instead of running along it, the bulkhead union PM10 or the bulkhead male elbow PLM10 is the right shape; their locknut for Dia 10 tube is M20x1. Do not reach for a threaded PC connector here unless one end terminates at a PT port.
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 PU10D FAQ
Working pressure 0 to 1.0 MPa (0 to 10 kgf/cm2), proof pressure 1.5 MPa, vacuum to -750 mmHg (10 Torr), and temperature -20 to 70 C. It is a straight union for two Dia 10 mm tubes of soft nylon or polyurethane, with no thread. It belongs to the resin one-touch family, not the 0.9 MPa metal BP line.
Press the tube in fully to lock it, then push the POM release ring square against the body to free the chuck's grip before pulling the tube out. Only soft nylon or polyurethane tube in exactly Dia 10 mm OD will hold; rigid nylon, braided hose or a metric tube of any other size will not seal. The D suffix changes the body colour to black but not the dimensions or ratings.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
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