Airtac PHD Swivel Reducing Hex Port Connector PHD8-6D
The AirTAC Airtac PHD Swivel Reducing Hex Port Connector PHD8-6D is a genuine universal reducer four branch union for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeUniversal reducer four branch union
- SeriesPHD
- 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 PHD Swivel Reducing Hex Port Connector PHD8-6D
The AirTAC PHD8-6D is a universal reducer four branch union, a four-way cross that joins Dia 8 and Dia 6 soft nylon or polyurethane tubing in one body instead of a stack of tees and reducers. Push each tube into its port and the internal chuck grips it straight along the tube axis; press the release ring square against the port and the tube slides free for rework. The D suffix gives this version a black body, and because it is a pure tube-to-tube union there is no threaded stud anywhere, so no sealant or gasket is needed at any port.
This union sits on the resin one-touch spec profile: working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, vacuum to -750 mmHg (10 Torr) and a temperature window of -20 to +70 C. Inside, the chuck and release button are POM, the guide is aluminium alloy, the O-ring is NBR and a stainless spring gasket does the gripping on every branch. Tube choice matters near the top of that window - soft nylon holds its stiffness better than polyurethane as temperatures climb, so on a warm machine bed nylon is the safer pick even though both are approved.
Airtac PHD Swivel Reducing Hex Port Connector PHD8-6D Technical Specifications
| Model | Airtac PHD Swivel Reducing Hex Port Connector PHD8-6D |
|---|---|
| Type | Universal reducer four branch union |
| Series | PHD |
| 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 PHD Swivel Reducing Hex Port Connector PHD8-6D
| PHD | Universal reducer four branch union. |
|---|---|
| 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 PHD Swivel Reducing Hex Port Connector PHD8-6D Is Used
Bottle-capping machine drop manifold
A Dia 8 supply run from the FRL arrives at one branch and leaves through the other three as Dia 6 lines to cap-torquing cylinders, replacing two reducers and a tee with a single push-in cross.
PCB test fixture actuator grid
Inside a dark electronics test enclosure, the black body sits unobtrusively while splitting one Dia 8 feeder into Dia 6 drops for a bank of small release-pin cylinders on nylon tubing.
Rotary indexing table circuit
Mounted at the centre of a dial plate, the cross divides a Dia 8 rotating feed into three Dia 6 branches serving clamp and eject cylinders at adjacent stations.
Is the Airtac PHD Swivel Reducing Hex Port Connector PHD8-6D the Right Part?
The PHD reducer cross ladder steps in pairs. One size down is PHD6-4, which carries a Dia 6 trunk into Dia 4 drops - the usual choice for small gripper circuits where flow demand is modest. One size up is PHD10-8, feeding Dia 6 branches off a Dia 10 trunk when several actuators share a single supply run. Every port accepts only the exact OD it is coded for: a Dia 8 branch will not seal on 5/16" or 1/4" imperial tube, and a Dia 6 branch will not hold 6.35 mm stock.
If one arm of the junction needs a thread instead of tube, switch to the PKD reducer branch family - PKD8-602 pairs a Dia 8 and Dia 6 branch with a 1/4" stud - rather than adapting this union. For a three-way version of the same reducing idea, the PKG triple branch union covers the smaller sizes.
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 PHD Swivel Reducing Hex Port Connector PHD8-6D FAQ
Working pressure is 0-1.0 MPa (0-10 kgf/cm2), proof pressure is 1.5 MPa, negative pressure is -750 mmHg (10 Torr), and the temperature range is -20 to +70 C. This SKU connects Dia 8 and Dia 6 soft nylon or polyurethane tube in a four branch union with no thread, and the D suffix means the body is black. It belongs to the resin one-touch line, not the metal 0.9 MPa / 150 C BP family.
Step down to PHD6-4, which takes Dia 6 tube in and hands off to Dia 4 branches. If your trunk is Dia 10 feeding Dia 6 drops, PHD10-8 is the correct neighbour. Keep all mating tube in metric soft nylon or polyurethane at the exact coded OD, because imperial sizes such as 1/4" or 5/16" will not grip in any port of this series.
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