Airtac PHF Tandem Toggle Joint PHF401
The AirTAC Airtac PHF Tandem Toggle Joint PHF401 is a genuine universal female elbow for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeUniversal female elbow
- SeriesPHF
- 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 PHF Tandem Toggle Joint PHF401
The PHF401 is an AirTAC PHF universal female elbow: a push-in fitting that joins Dia 4 mm soft nylon or polyurethane tubing to a 1/8 in PT female thread. The female port swivels on the elbow body, so the tube can leave at any angle you set instead of only the angles a fixed elbow allows.
It belongs to the resin one-touch line. Push the tube home and the stainless spring gasket and chuck grip the OD; press the release ring and the tube frees. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg, proof pressure 1.5 MPa, and temperature -20 to +70 C. The elbow body is PBT with a brass stud, and the female thread arrives with sealant already applied.
Airtac PHF Tandem Toggle Joint PHF401 Technical Specifications
| Model | Airtac PHF Tandem Toggle Joint PHF401 |
|---|---|
| Type | Universal female elbow |
| Series | PHF |
| 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 PHF Tandem Toggle Joint PHF401
| PHF | Universal female elbow. |
|---|---|
| 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 PHF Tandem Toggle Joint PHF401 Is Used
Vacuum ejector feed on a pick-and-place head
Dia 4 lines are standard on small ejectors and suction cups. The swivelling female port lets the elbow sit at the exact angle the robot arm demands, then lock onto an M5 or 1/8 in gauge or valve outlet without twisting the tubing.
Pressure gauge tap on a compact laboratory compressor
A 1/8 in PT female thread drops straight onto the stud of a small glycerine gauge. The Dia 4 bore keeps the sensing line slim and responsive, and the elbow lets the gauge face the operator rather than the panel.
Cylinder port connection inside a tight machine guard
On compact clamping cylinders the port often points where a straight connector cannot. A universal elbow re-routes the Dia 4 tube away from the guard wall, and the female thread avoids adding a separate male adapter to the port.
Is the Airtac PHF Tandem Toggle Joint PHF401 the Right Part?
Dia 4 is the smallest tube size PHF offers on a 1/8 in thread, so there is no step down - this is the edge of the ladder. The next size up on the same thread is Dia 6 (PHF601), which doubles the bore and suits longer runs or higher feed demand; flow scales with the bore, not with the fitting. On the thread side, the M5 version (PHF4M5) also takes Dia 4 tube, but note that the 1/4 in female PHF starts at Dia 6 - there is no Dia 4 part on a 1/4 in thread, so a 1/4 in port forces you to PHF602.
Match the tube exactly: this fitting holds 4 mm OD tubing only and will not seal on 5/32 in or 1/4 in imperial tube. If you need to pass the connection through a panel instead of terminating it at an angle, the bulkhead female PMF401 with its M12x1 locknut thread is the shape to compare against this one.
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 PHF Tandem Toggle Joint PHF401 FAQ
It is a resin one-touch universal female elbow for Dia 4 mm soft nylon or polyurethane tube with a 1/8 in PT female thread. 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. The body is PBT with a brass stud and the female thread is supplied with sealant applied.
No extra preparation is normally required: AirTAC ships the threaded parts of this series with sealant already on the thread, so the PHF401 screws directly onto a 1/8 in PT male stud. Hand-tight engagement followed by a modest spanner turn is enough; forcing it further stresses the PBT body without improving the seal. Check for leaks at low pressure before taking the line to full working pressure.
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