Airtac PGJ Plug Pin Reducing Straight Connector PGJ12-8D
The AirTAC Airtac PGJ Plug Pin Reducing Straight Connector PGJ12-8D 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 PGJ12-8D
The PGJ12-8D is an AirTAC PGJ plug-in reducer, a straight tube-to-tube union that joins a Dia 12 mm soft nylon or polyurethane line to a Dia 8 mm one. Push the tube home and the internal chuck grips its wall; press the release ring and the tube comes free. It carries no thread at all, so there is nothing to wrap, seal or torque - the connection is entirely push-in on both ends.
This is the resin and brass 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 D suffix makes the body black, which on PG series parts means the whole body changes colour, unlike on the PC connector where D only recolours the release button. Two details worth knowing: the hyphen in the code appears only on reducers, so PGJ12-8D is complete as written, and the Dia 12 chuck is cut for exactly 12.0 mm tube - a 1/2 inch tube at 12.7 mm will not seat.
Airtac PGJ Plug Pin Reducing Straight Connector PGJ12-8D Technical Specifications
| Model | Airtac PGJ Plug Pin Reducing Straight Connector PGJ12-8D |
|---|---|
| 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 PGJ12-8D
| 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 PGJ12-8D Is Used
Valve inlet drop on a bottling line
Main 12 mm trunk runs along the frame; the PGJ12-8D steps it straight down to an 8 mm tail feeding each solenoid valve manifold station, with no threaded joint to seal in a wash-prone zone.
Corrugated box conveyor take-up air
A Dia 12 feeder from the plant supply reduces to Dia 8 where the pneumatics thin out along the conveyor sections, keeping the smaller-bore take-up cylinders fed at their proper flow.
Pick-and-place gripper supply
On a robot end-of-arm the wide 12 mm run comes up the arm and this reducer trims it to 8 mm right before the gripper circuit, the black body blending into painted tooling where grey would stand out.
Is the Airtac PGJ Plug Pin Reducing Straight Connector PGJ12-8D the Right Part?
Step size is the whole decision here. If your feed line is Dia 10 rather than Dia 12, the matching part is the 10 to 8 step; if you need to drop further, the adjacent move is a 12 to 6 step down to Dia 6. Going the other way, a Dia 12 fitting of any kind is the largest tube this resin catalogue carries - there is no Dia 16 anywhere in the series, so a 12 mm line is already at the ceiling. Whichever step you pick, both diameters must match the tubing exactly; a Dia 12 socket will not hold 1/2 inch tube.
Choose this straight shape when the drop happens in-line, in the open, where the tube can bend gently out of the fitting. If the reduction sits at a corner where the tubing would flex against the wall every cycle, a different-diameter elbow such as the PV family is the better answer, and if the drop must feed two branches off one 12 mm trunk, the PKG reducer triple branch union does that in a single part 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 PGJ Plug Pin Reducing Straight Connector PGJ12-8D FAQ
It is a plug-in reducer joining Dia 12 mm tube on one side to Dia 8 mm on the other, with no thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, negative pressure -750 mmHg (10 Torr) and operating temperature -20 to +70 C. It takes soft nylon or polyurethane tubing. These are the resin and brass profile figures, not the 0.9 MPa / 150 C figures of the metal BPC family.
No. The Dia 12 chuck is sized for 12.0 mm OD tubing only, and 1/2 inch tube measures 12.7 mm - over half a millimetre too large, so the gripping fingers cannot close on it. Use genuine 12 mm metric tube on the large side. Because both ends of a reducer are different diameters, the part is also not reversible: the 12 mm end and the 8 mm end each accept only their own size.
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