Airtac PHF Tandem Toggle Joint PHF401D-S
SUS304 stainless variant (-S)The AirTAC Airtac PHF Tandem Toggle Joint PHF401D-S 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 PHF401D-S
The PHF401D-S is an AirTAC PHF universal female elbow in the resin one-touch family. It joins Dia 4 mm soft nylon or polyurethane tubing to a 1/8 in PT female threaded port. Because the thread is female, the fitting screws straight onto a male stud or valve port and the elbow body can be positioned during assembly, which is what the 'universal' name refers to. To connect, push the 4 mm tube into the chuck until it bottoms out; the stainless spring gasket and POM chuck grip it instantly. Press the release ring to free it.
This is the standard resin pressure profile, not the metal line: 0-1.0 MPa (0-10 kgf/cm2) working pressure, -750 mmHg (10 Torr) vacuum, 1.5 MPa proof pressure and -20 to +70 C. The -S suffix makes the mounting stud SUS304 stainless steel while the body stays black PBT; every pressure, temperature and dimensional figure is identical to the standard PHF401D. The 1/8 in thread arrives with sealant applied, so no extra tape is needed on the port.
Airtac PHF Tandem Toggle Joint PHF401D-S Technical Specifications
| Model | Airtac PHF Tandem Toggle Joint PHF401D-S |
|---|---|
| Type | Universal female elbow |
| Series | PHF |
| Connection | Push-in one-touch |
| Body material | Stainless steel 304 (-S variant) |
| 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. Stainless (-S): SUS304 in place of brass - a solid SUS304 body on the PC and POC straight connectors, and a PBT body with a SUS304 stud on the elbow, tee and branch shapes. Working pressure, proof pressure and temperature are unchanged from the standard version. 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 PHF401D-S
| 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. |
| -S | Stainless-steel body. |
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 PHF401D-S Is Used
Benchtop gas analyser sampling
Screw the 1/8 in female thread directly onto an analyser or flowmeter port and run 4 mm PU tubing to a small diaphragm pump; the elbow turns the line 90 degrees without kinking the narrow bore.
Dense electrical cabinet routing
Inside a cramped control cabinet, the female elbow lets the 4 mm branch exit at a right angle so tubing runs flat along the panel wall instead of fouling terminal blocks or door hinges.
Pilot-stage solenoid porting
On a low-flow pilot circuit feeding a small 1/8 in solenoid valve, the female thread seals straight onto the valve port, removing the need for a separate male nipple and cutting one assembly step.
Is the Airtac PHF Tandem Toggle Joint PHF401D-S the Right Part?
Dia 4 mm is the smallest tube size the PHF series offers on a 1/8 in thread, so the only step up is Dia 6 (PHF601), with Dia 8 (PHF801) completing the 1/8 in ladder. If you need more bore for a shorter, low-restriction run, move to Dia 6 rather than forcing a smaller fitting to do a larger one's job. On the thread side, this size also exists with an M5 port (PHF40M5) or a 1/4 in port (PHF402); pick M5 for compact instrument ports and 1/4 in when the mating stud is larger. Remember the tube OD must match exactly - a Dia 4 chuck will not seal on 5/32 in or 3 mm tube.
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 PHF401D-S FAQ
Working pressure is 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), and proof pressure 1.5 MPa, with a temperature range of -20 to +70 C. The fitting joins Dia 4 mm tubing to a 1/8 in PT female thread. It is the resin one-touch profile: black PBT elbow body, SUS304 stud, POM release button and chuck, aluminium-alloy guide, stainless spring gasket and NBR O-ring, for soft nylon or polyurethane tube.
Only the stud becomes SUS304 stainless steel for corrosion resistance in damp or mildly aggressive surroundings. The body stays PBT in black, the shape and all dimensions match the standard PHF401D, and none of the pressure, vacuum, proof-pressure or temperature ratings change. AirTAC publishes no additional surface treatment or certification figures for the stainless option, so specify it purely on material and fit.
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Standard parts are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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