Airtac PGJ Plug Pin Reducing Straight Connector PGJ6-4D
The AirTAC Airtac PGJ Plug Pin Reducing Straight Connector PGJ6-4D is a genuine plug-in reducer for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypePlug-in reducer
- SeriesPGJ
- 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 PGJ Plug Pin Reducing Straight Connector PGJ6-4D
The PGJ6-4D is an AirTAC PGJ plug-in reducer, a tube-to-tube one-touch fitting that joins a Dia 6 mm soft nylon or polyurethane line on one end and a Dia 4 mm line on the other, with no threaded port involved at all. Push the tube firmly into each socket and the internal chuck grips the OD to seal it; press the release ring toward the body and the tube slides straight back out. Because both connections are push-fit, the fitting can be undone and re-laid without any tools.
This is the resin one-touch profile, not the metal line: working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, usable down to -750 mmHg (10 Torr) vacuum, and a temperature span of -20 to +70 C. Internals are a POM release button and chuck with an aluminium-alloy guide, stainless spring gasket and NBR O-ring. Note that the D suffix here colours the whole body black - unlike the PC and POC straight connectors, where D changes only the release button.
Airtac PGJ Plug Pin Reducing Straight Connector PGJ6-4D Technical Specifications
| Model | Airtac PGJ Plug Pin Reducing Straight Connector PGJ6-4D |
|---|---|
| Type | Plug-in reducer |
| Series | PGJ |
| 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 PGJ Plug Pin Reducing Straight Connector PGJ6-4D
| PGJ | Plug-in reducer. |
|---|---|
| 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 PGJ Plug Pin Reducing Straight Connector PGJ6-4D Is Used
Pick-and-place gripper feed
Step a Dia 6 drop off the machine manifold down to Dia 4 tubing feeding a compact gripper on a pick-and-place head, where the smaller bore keeps the end-of-arm run light and easy to route through moving cable dress.
Benchtop dispensing station
On a laboratory dispensing or micro-dosing rig, take the Dia 6 supply line down to Dia 4 at the last moment so thin, flexible tubing reaches a small actuator inside a crowded instrument enclosure.
Packaging machine film blow-off
The all-black body blends with the black tubing runs along packaging machine frames; use the Dia 6-to-Dia 4 step to feed a small blowing nozzle that clears film dust and trim at the sealing station.
Is the Airtac PGJ Plug Pin Reducing Straight Connector PGJ6-4D the Right Part?
The Dia 4 leg of this reducer sits at the very bottom of the tube ladder - Dia 4 is the smallest tubing this catalogue covers, so there is no smaller step down; if your line is Dia 4 throughout, you need a plain union rather than a reducer. Stepping the other way, the tube ladder continues above Dia 6 at Dia 8, so the Dia 8-to-Dia 6 version of this plug-in reducer is the natural next size up when the feed line grows. Tube OD must match each end exactly - the Dia 6 socket will not hold 1/4 in (about 6.35 mm) tube, and the Dia 4 socket will not stretch to 5 mm. If you need the step without the plug-in body, the PG different-diameter straight union is the inline alternative, while PKG and PHK reducer triple-branch unions handle a split feed at a reduced size.
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 PGJ Plug Pin Reducing Straight Connector PGJ6-4D FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. It is a resin one-touch plug-in reducer joining Dia 6 mm tubing on one end to Dia 4 mm on the other, with no threaded port, for soft nylon or polyurethane tube. This is the standard resin profile - the lower-pressure 0.9 MPa / 150 C figures belong to the metal BP family, not this part.
On this series D means the body is moulded black as well as the release button. That differs from the PC and POC straight connectors, where the D suffix changes only the button colour. Functionally the fitting is identical to the grey version: same one-touch chuck, same 0-1.0 MPa rating, same Dia 6 to Dia 4 reduction. It simply matches machines built around black tubing runs, where a grey fitting would stand out.
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