Airtac PZ Cross Fitting PZ4D
The AirTAC Airtac PZ Cross Fitting PZ4D is a genuine cross for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeCross
- SeriesPZ
- 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 PZ Cross Fitting PZ4D
The PZ4D is an AirTAC PZ union cross from the resin one-touch range: four push-in ports in one body, all sized for Dia 4 mm tubing, letting a single 4 mm air line branch into three equal supplies at one junction. The D suffix means the POM body arrives in black rather than the standard grey - on this tube-to-tube series the colour change is on the body itself, not just the release buttons.
Each port works the same one-touch way: push the soft nylon or polyurethane tube straight in until it bottoms, and the internal chuck grips it for a seal under load; press the release ring to free it. This is the resin spec profile, not the metal BP line: working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and a service temperature of -20 to +70 C. An NBR O-ring seals each chuck and a stainless spring gasket backs the grip.
Airtac PZ Cross Fitting PZ4D Technical Specifications
| Model | Airtac PZ Cross Fitting PZ4D |
|---|---|
| Type | Cross |
| Series | PZ |
| 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 PZ Cross Fitting PZ4D
| PZ | Cross. |
|---|---|
| 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 PZ Cross Fitting PZ4D Is Used
Vacuum pick-and-place cells
Split one ejector supply line into three suction cups on a compact pick-and-place gantry, where all four 4 mm runs converge at a single point above the tool plate.
Small pneumatic jigs and clamps
Feed three 4 mm mini-cylinder clamps on a drilling jig from one supply drop, keeping the whole air distribution visible and serviceable outside the guard.
Bench-top automation rigs
Distribute air to three actuators on a laboratory or educational bench-top rig built entirely from 4 mm polyurethane tubing, with push-fit changes between experiments.
Is the Airtac PZ Cross Fitting PZ4D the Right Part?
Dia 4 is the smallest union cross in this catalogue - there is no smaller PZ below it, and PZ6 is the only step up, feeding three branches from a 6 mm line with slightly higher carrying capacity per branch. If your four lines are not all the same OD, this part cannot take them: every port of the PZ4D is Dia 4, so a 6 mm or 1/4 inch tube will not seat or seal. For mixed bores at a cross point, AirTAC makes the PZG different-diameter cross instead. Remember tubing OD must match exactly - a Dia 4 fitting will not hold 1/4 inch tube even at a squeeze.
Because this is a tube-to-tube union with no thread, it needs no port preparation or sealant - the M5 and PT threaded fittings in the same range do, so keep those for machine ports and use the PZ4D where four tube runs simply meet. If the junction has to pass through a panel or bulkhead, the PM bulkhead union family is the shape to look at rather than this open cross.
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 PZ Cross Fitting PZ4D FAQ
It is a resin one-touch union cross with four Dia 4 mm ports and no thread. Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and a temperature range of -20 to +70 C. Use soft nylon or polyurethane tubing only, and note the black body comes from the D colour suffix.
No. All four ports are Dia 4 mm, and a one-touch chuck only grips the tube OD it was cut for - a 6 mm or 1/4 inch tube will not seat or seal. If you need to step sizes at a cross junction, order the AirTAC PZG different-diameter cross, which is made for exactly that job.
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