Airtac PEG T-Type Concentric Reducing Tee Fitting PEG12-8D
The AirTAC Airtac PEG T-Type Concentric Reducing Tee Fitting PEG12-8D is a genuine different diameter tee for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeDifferent diameter tee
- SeriesPEG
- 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 PEG T-Type Concentric Reducing Tee Fitting PEG12-8D
The PEG12-8D is an AirTAC PEG different diameter union tee in the resin one-touch range. It joins three push-in tube ends: two Dia 12 mm legs forming the through run and one Dia 8 mm branch at 90 degrees, so a large supply line can feed a smaller actuator or sub-loop without any threaded port in between. Every connection is one-touch: push the tube fully home and the stainless spring gasket and chuck grip its outside diameter, press the POM release ring to free it again.
This is the resin and brass 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 temperature window of -20 to +70 C with soft nylon or polyurethane tubing. Internals are a POM chuck and release button, aluminium-alloy guide, stainless spring gasket and NBR O-ring on a PBT body. The D suffix on this series makes the whole body black, not just the release button as on PC and POC straight connectors.
Airtac PEG T-Type Concentric Reducing Tee Fitting PEG12-8D Technical Specifications
| Model | Airtac PEG T-Type Concentric Reducing Tee Fitting PEG12-8D |
|---|---|
| Type | Different diameter tee |
| Series | PEG |
| 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 PEG T-Type Concentric Reducing Tee Fitting PEG12-8D
| PEG | Different diameter tee. |
|---|---|
| 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 PEG T-Type Concentric Reducing Tee Fitting PEG12-8D Is Used
Packaging conveyor drop feeds
Take a Dia 12 mm main air drop along a packaging conveyor frame and branch Dia 8 mm legs off to guide-roller and gate cylinders, using one fitting instead of a tee plus reducers.
Plating line rinse manifold
On plating or rinse equipment, branch a Dia 8 mm spray or agitation line off a Dia 12 mm supply run where the black PBT body resists splash-zone wash-down mist better than bare brass would look after a season.
Machine-frame distribution tee
Inside dark guard panels on assembly machinery, the all-black body of the -D variant disappears against painted steelwork while splitting a 12 mm feed into an 8 mm clamping circuit.
Is the Airtac PEG T-Type Concentric Reducing Tee Fitting PEG12-8D the Right Part?
This SKU steps a Dia 12 run down to a Dia 8 branch. If your main run is the next size down, the PEG10-8 pairing drops the through line to Dia 10 and suits lighter branch loads; if you need a larger branch from a Dia 12 run, PEG12-10 is the step up. When all three legs are the same bore, the equal-diameter PE union tee is the simpler part to specify instead. Remember the branch, not just the run, must be a true metric size: a Dia 8 branch will not grip 5/16 inch tube, and a Dia 12 leg will not hold 1/2 inch imperial tube even though the numbers look close.
Tube OD has to match exactly on all three legs because the chuck grips the outside diameter. Use soft nylon or polyurethane only; rigid semi-nylon pipe will not seal in the gasket.
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 PEG T-Type Concentric Reducing Tee Fitting PEG12-8D FAQ
It is a different diameter union tee joining Dia 12 mm tube on the through run to a Dia 8 mm branch, with no thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and the operating temperature range is -20 to +70 C. It is the resin one-touch profile and takes soft nylon or polyurethane tubing; the D suffix gives a black body.
No. 1/2 inch tube measures about 12.7 mm outside diameter, and the one-touch chuck grips a fixed metric OD, so a Dia 12 mm leg will leak or fail to lock on imperial tube. Stick to true Dia 12 mm and Dia 8 mm soft nylon or polyurethane on this fitting.
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