Airtac PLL L-Type Extended Thread Connector PLL401-S
SUS304 stainless variant (-S)The AirTAC Airtac PLL L-Type Extended Thread Connector PLL401-S is a genuine extended male elbow for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeExtended male elbow
- SeriesPLL
- 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 PLL L-Type Extended Thread Connector PLL401-S
The AirTAC PLL401-S is a stainless-stud extended male elbow from the resin one-touch range. It terminates 4 mm outer diameter soft nylon or polyurethane tubing on an externally threaded 1/8in PT male stud. The longer threaded neck compared with the standard PL elbow means the sealing shoulder sits further out from the wall of the machine, leaving room to get a spanner onto the flats and to point the tube away in a clean 90 degree turn. Assembly is genuinely one-touch: push the tube fully home and the stainless spring gasket plus chuck grip it against pressure; press the POM release ring toward the body and the tube frees for repositioning.
This -S version keeps the PBT body and POM button of the standard part but upgrades the male stud to SUS304, which is what the port thread sees. Do not re-rate it: the figures are the resin-line figures, 0 to 1.0 MPa working pressure (0 to 10 kgf/cm2), -750 mmHg vacuum, 1.5 MPa proof pressure, and -20 to +70 C. AirTAC ships the thread with sealant already applied, so the stud is ready to wind straight into the port.
Airtac PLL L-Type Extended Thread Connector PLL401-S Technical Specifications
| Model | Airtac PLL L-Type Extended Thread Connector PLL401-S |
|---|---|
| Type | Extended male elbow |
| Series | PLL |
| 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 PLL L-Type Extended Thread Connector PLL401-S
| PLL | Extended male 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 PLL L-Type Extended Thread Connector PLL401-S Is Used
Rodless cylinder lines inside tight guards
On a compact gantry where the cylinder port sits 15 mm from the guard skin, a short PL elbow often cannot be tightened. The extended PLL401-S neck puts the 1/8in thread clear of the obstruction while turning the 4 mm control line through 90 degrees.
Small-bore pick-and-place wrist air
Vacuum ejectors and gripper circuits on SCARA wrists commonly run 4 mm tubing. This elbow lets the line exit horizontally off a vertical port, keeping it clear of the rotating toolplate and shortening the drop to the ejector.
Plating and wet-process pilot rigs
Where splashed chemistry attacks plated brass studs around a benchtop pneumatic circuit, the SUS304 stud on this part resists surface corrosion while the 4 mm line feeds small actuated sample valves.
Is the Airtac PLL L-Type Extended Thread Connector PLL401-S the Right Part?
Dia 4 is the smallest tube this 1/8in thread accepts on the PLL ladder, so there is no size below it; the next step up is Dia 6 as the PLL601-S, which suits 6 mm air tool and cylinder lines. On the thread side, the M5 port version of this Dia 4 elbow exists if you are instrument-panel work, while stepping up to a 1/4in port gives you the PLL402-S. Whichever you pick, the tube must match exactly - a Dia 4 chuck will not seal on 5 mm or 3/16in hose, so check the tube print before ordering.
Choose this PLL shape over a straight PC connector whenever the tube has to leave the port at right angles and the port sits close to a wall, a guard or a manifold face - the extended neck buys back the clearance a compact elbow would lose.
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 PLL L-Type Extended Thread Connector PLL401-S FAQ
Working pressure 0 to 1.0 MPa (0 to 10 kgf/cm2); negative pressure down to -750 mmHg (10 Torr); proof pressure 1.5 MPa; operating temperature -20 to +70 C. The fitting joins Dia 4 mm soft nylon or polyurethane tube to a 1/8in PT male thread. These are the resin one-touch figures - the -S suffix changes the stud material to SUS304, not the ratings.
No. On the PLL family the -S suffix means the male stud (the threaded part that screws into your port) is SUS304, while the elbow body stays PBT with a POM release ring and aluminium-alloy guide. If you need an all-stainless body on a straight connector, look at the PC or POC -S versions instead. AirTAC publishes no 316 option in this range.
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