Airtac PEW T-Type Side Reducing Tee Fitting PEW12-8D
The AirTAC Airtac PEW T-Type Side Reducing Tee Fitting PEW12-8D 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
- SeriesPEW
- 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 PEW T-Type Side Reducing Tee Fitting PEW12-8D
The PEW12-8D is an AirTAC PEW different diameter union tee: a three-port, tube-to-tube fitting that runs a Dia 12 mm line straight through and takes an 8 mm branch off the side. Push each soft nylon or polyurethane tube into its port until it stops - a stainless spring gasket and the POM chuck grip it for a pressure-tight joint - and press the release ring to free it again. There is no thread anywhere on this part; both sides of the joint are tubing, so no PTFE tape or sealant is involved.
This SKU carries the D suffix, which on the PEW family means the body is moulded in black rather than the standard grey - handy when you want non-grey hardware on a visible frame or need a visual cue that this tee is the reducer point in a circuit. It belongs to the resin one-touch profile: 0-1.0 MPa working pressure, 1.5 MPa proof pressure, -20 to +70 C, and a negative-pressure rating of -750 mmHg (10 Torr) so it also holds on vacuum lines.
Airtac PEW T-Type Side Reducing Tee Fitting PEW12-8D Technical Specifications
| Model | Airtac PEW T-Type Side Reducing Tee Fitting PEW12-8D |
|---|---|
| Type | Different diameter tee |
| Series | PEW |
| 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 PEW T-Type Side Reducing Tee Fitting PEW12-8D
| PEW | 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 PEW T-Type Side Reducing Tee Fitting PEW12-8D Is Used
Injection moulding coolant take-off
On a mould cooling manifold plumbed in 12 mm polyurethane, the 8 mm branch feeds a mould temperature probe or a small zone circuit without resizing the whole trunk.
Bottling line air sparge
A bottling conveyor's 12 mm main supply drops to an 8 mm branch at each rinse or blow-off station; the tee sits inline in the trunk and the black body hides well against stainless guarding.
Lab vacuum manifold
In a laboratory vacuum distribution skid rated to -750 mmHg, a 12 mm header feeds multiple 8 mm drops to desiccators or filtration flasks from a single tee.
Is the Airtac PEW T-Type Side Reducing Tee Fitting PEW12-8D the Right Part?
You are stepping down from a 12 mm trunk to an 8 mm branch. If both legs were equal you would order a PE12 union tee instead; if the junction is a smooth Y rather than a right-angle branch, the PYW different diameter union Y is the neighbouring shape. AirTAC publishes no flow value for these fittings, but capacity follows the smaller bore - so on this part your 8 mm branch is the bottleneck and the 12 mm run must be sized for the total of trunk and branch demand.
Check two things before ordering. First, tube OD must match exactly: the 8 mm port will not clamp 6 mm or 10 mm tube, and a 6.35 mm (1/4 inch) imperial tube is not a substitute for 8 mm. Second, use soft nylon or polyurethane only - rigid nylon and braided hose will not seat in the chuck.
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 PEW T-Type Side Reducing Tee Fitting PEW12-8D FAQ
It is a one-touch different diameter union tee joining Dia 12 mm tube to a Dia 8 mm branch, with a black (D suffix) body. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, temperature range -20 to +70 C, and it is rated for negative pressure down to -750 mmHg (10 Torr). It suits soft nylon or polyurethane tubing. No flow coefficient is published; capacity follows the 8 mm branch bore.
No. One-touch chucks grip one exact outside diameter, so the branch port accepts genuine 8 mm OD soft nylon or polyurethane tube only - 10 mm tube will not seal, and a nominal 1/4 inch imperial hose at 6.35 mm OD is undersized and will leak or blow out. For a 10 mm branch, step to a PEW12-10 style combination; for equal diameters use the PE union tee.
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