Airtac PZG Cross Reducing Fitting PZG6-4
The AirTAC Airtac PZG Cross Reducing Fitting PZG6-4 is a genuine different diameter cross for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeDifferent diameter cross
- SeriesPZG
- 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 PZG Cross Reducing Fitting PZG6-4
The AirTAC PZG6-4 is a different diameter cross from AirTAC's resin one-touch range: four tube stubs meeting at one plastic junction, with the larger legs sized for Dia 6 tubing and the smaller legs for Dia 4 tubing. It lets a single supply or vacuum point feed three or four circuits of two different bores without threading, soldering or an adaptor tree. The body is grey as standard, sealed by NBR O-rings, and rated for the resin profile: 0 to 1.0 MPa working pressure, 1.5 MPa proof pressure, -750 mmHg (10 Torr) vacuum and -20 to +70 C.
Installation is genuinely one-touch on every leg: cut the soft nylon or polyurethane tube square, push it into the chuck until it bottoms, and the stainless spring gasket and O-ring grip and seal it instantly. Pressing the POM release ring on any leg frees that tube again for rework or re-routing. Because it is a union, there is no external thread anywhere on the part - the whole junction lives inside the tubing run.
Airtac PZG Cross Reducing Fitting PZG6-4 Technical Specifications
| Model | Airtac PZG Cross Reducing Fitting PZG6-4 |
|---|---|
| Type | Different diameter cross |
| Series | PZG |
| 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 PZG Cross Reducing Fitting PZG6-4
| PZG | Different diameter 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 PZG Cross Reducing Fitting PZG6-4 Is Used
Vacuum distribution on a PCB pick-and-place head
A Dia 6 vacuum line from the ejector enters the cross and two Dia 4 legs carry vacuum out to individual suction cups, so one vacuum source serves a multi-cup head without a tangle of reducers.
End-of-arm tooling on a SCARA assembly robot
The Dia 6 supply leg feeds the gripper circuit while the Dia 4 legs run shorter pulse lines to two small gripper cylinders, collapsing four tube runs into one junction at the wrist.
Lab automation manifold split on a dialysis or dosing bench
A Dia 6 line from the pump manifold is cross-split into Dia 4 branches feeding peristaltic actuator heads, keeping the sub-panel tubing run on two tidy bore sizes.
Is the Airtac PZG Cross Reducing Fitting PZG6-4 the Right Part?
PZG6-4 sits at the bottom of the different diameter cross ladder. Dia 4 is the smallest tube size AirTAC makes in this catalogue, so there is no smaller branch available - if your small legs are under Dia 4, this family cannot serve you. The next step up pairs Dia 8 legs with a Dia 6 branch (PZG8-6), which suits a Dia 8 trunk feeding Dia 6 drop lines; going that route increases the bore and therefore the qualitative capacity of each circuit, since flow in these fittings is limited by the tube bore rather than the plastic body. Tube OD must match the fitting exactly: a Dia 6 leg will not seal on 1/4 inch (6.35 mm) tube, and the Dia 4 legs will not accept 5/32 inch tube.
If your junction needs a threaded port instead of a fourth tube leg, step across to the PZB threaded cross (for example PZB601, Dia 6 with a 1/8 PT port) - the PZG is purely tube-to-tube.
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 PZG Cross Reducing Fitting PZG6-4 FAQ
The PZG6-4 is a resin one-touch different diameter union cross joining Dia 6 and Dia 4 tubing, with no external thread. Working pressure is 0 to 1.0 MPa (0 to 10 kgf/cm2), negative pressure is -750 mmHg (10 Torr), proof pressure is 1.5 MPa and the temperature range is -20 to +70 C. It is intended for soft nylon or polyurethane tubing only.
No. AirTAC specifies soft nylon or polyurethane tubing for the one-touch chuck; rigid nylon and PE tube will not seal reliably on the spring gasket. Also match the OD exactly - the Dia 6 legs take only Dia 6 tube and the Dia 4 legs only Dia 4 tube, and each leg has its own release ring so a mis-routed run can be freed and redone without dismantling the junction.
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