Airtac PZG Cross Reducing Fitting PZG8-6D
The AirTAC PZG Cross Reducing Fitting PZG8-6D 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 PZG8-6D
The PZG8-6D is an AirTAC PZG different diameter cross: a four-way tube-to-tube union that carries a Dia 8 mm main line and splits it into Dia 6 mm branch legs, all in one moulded body. Push each soft nylon or polyurethane tube into its port and the internal chuck grips the OD; press the release ring and the tube slides straight back out. No tools, no inserts, no ferrules.
This is the resin one-touch spec profile, not the metal line: working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, vacuum down to -750 mmHg (10 Torr), and a temperature window of -20 to +70 C. The trailing D means the body is moulded in black rather than the standard grey - on PZG the D changes the body itself, not just a button. The release button and chuck are POM, the guide is aluminium alloy, and the spring gasket is stainless with an NBR O-ring doing the seal.
Airtac PZG Cross Reducing Fitting PZG8-6D Technical Specifications
| Model | Airtac PZG Cross Reducing Fitting PZG8-6D |
|---|---|
| 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 PZG8-6D
| 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 PZG8-6D Is Used
Rotary indexing table air distribution
A Dia 8 feed ring around an indexing table steps down to Dia 6 legs at each station clamp, and the PZG8-6D gives the 90-degree split point without extra unions or threaded ports.
Packaging machine header with corner drops
On a cartoning or flow-wrap machine, an 8 mm header runs the machine length while 6 mm branches feed the glue, fold and eject cylinders at each corner - exactly the two-bore split this cross makes in one part.
Control panel rear air manifold
Behind a panel wall, a black PZG body is easy to spot against grey tubing and fittings, letting technicians trace the 8 mm main and its two 6 mm branch drops during commissioning or fault finding.
Is the Airtac PZG Cross Reducing Fitting PZG8-6D the Right Part?
Size both directions before you order. Step down the ladder to PZG6-4 when the main run is a 6 mm line feeding 4 mm branches - typical when dropping from a machine air header to small pneumatic actuators. Step up to PZG10-8 for a 10 mm trunk feeding 8 mm legs where flow demand per branch is higher. What changes with each step is bore and therefore air speed at the branch: an 8-to-6 cross costs you some capacity per leg compared with a same-size PZ8, so keep branch runs short if the actuators cycle fast. Remember the tube OD must match exactly - the Dia 6 ports will not grip 1/4 inch (6.35 mm) tube, and the Dia 8 ports will not hold 5/16 inch.
Choose a cross rather than a tee when two branches leave the same point in different directions - for example a feed that must continue straight while two drops branch off at 90 degrees. If your branch is only one line, a PEG or PEW different diameter tee is the simpler part; if the split happens at a threaded port on a valve or manifold, move to a PKD male reducer triple branch instead.
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 PZG8-6D FAQ
Working pressure is 0-1.0 MPa (0-10 kgf/cm2), with usable vacuum down to -750 mmHg (10 Torr). Proof pressure is 1.5 MPa. Service temperature is -20 to +70 C. The fitting joins a Dia 8 mm main line to Dia 6 mm branch legs, uses soft nylon or polyurethane tubing, and is the resin PZG profile - not the 0.9 MPa metal BP line.
No. One-touch chucks grip the stated tube OD only: Dia 8 mm in the main ports and Dia 6 mm in the branch ports. 1/4 inch tube measures about 6.35 mm and will not seat in the Dia 6 chuck, which risks a leak or a tube blowing out under pressure. Either switch the branch tubing to genuine 6 mm OD, or select the PZG step that matches the tube you already run.
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