Airtac PLL L-Type Extended Thread Connector PLL402-S
SUS304 stainless variant (-S)The AirTAC Airtac PLL L-Type Extended Thread Connector PLL402-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 PLL402-S
The PLL402-S is an AirTAC PLL extended male elbow, a push-in fitting that joins Dia 4 mm soft nylon or polyurethane tubing to a 1/4 in PT male port at 90 degrees. The extended thread neck stands the elbow a short distance off the mounting face, which leaves room for a wrench and keeps the tubing clear of the panel or guard it is mounted through. Installation is one-touch: push the tube fully home, the stainless spring gasket and chuck grip it, and pressing the release ring lets it out again.
The -S suffix means the male stud is SUS304 stainless steel; the elbow body itself stays PBT, exactly like the standard PLL402, and the ordering code before the suffix decodes the same way. Ratings are unchanged from the resin line: 0-1.0 MPa working pressure, -750 mmHg (10 Torr) vacuum, 1.5 MPa proof pressure and -20 to +70 C. Like every threaded part in this catalogue, the PT thread arrives with sealant already applied.
Airtac PLL L-Type Extended Thread Connector PLL402-S Technical Specifications
| Model | Airtac PLL L-Type Extended Thread Connector PLL402-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 PLL402-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 PLL402-S Is Used
Pilot feed on a compact control valve island
A Dia 4mm pilot line stepped up to the 1/4in PT port of a pneumatic valve island; the extended neck keeps the tube bend away from the manifold face and the SUS304 stud resists corrosion in humid compressor rooms.
Analytical instrument sample cabinet
Feeding 4mm polyurethane tube to a 1/4in PT purge or actuation port inside a lab gas cabinet, where the stainless stud avoids rust streaks from condensation and the one-touch chuck lets technicians re-route lines without tools.
Small-bore actuator on a packaging machine
A right-angle connection at a compact packaging-machine cylinder where space above the port is tight; the extended thread gives a wrench purchase and points the thin Dia 4mm line down along the frame.
Is the Airtac PLL L-Type Extended Thread Connector PLL402-S the Right Part?
Dia 4 mm is the smallest tube size AirTAC makes on the PLL ladder, so there is no smaller step - if you need a 3.2 mm line you have moved to the PC or PL mini series instead. The next size up on the same 1/4 in thread is PLL612 for Dia 6 mm tube, which buys you a visibly larger bore for runs feeding bigger cylinders. Staying on Dia 4 but stepping the thread down gives PLL401 (1/8 in), useful on compact valve manifolds where a 1/4 in port would overhang the edge.
Tube OD must match exactly: a Dia 4 chuck will not seal on 1/4 in (6 mm) tube, and the sizes are close enough that the mistake is easy to make on the bench. If you actually need the fitting to pass through a panel wall rather than stand off it, the bulkhead shapes PM or PLM are the correct answer, not an extended elbow.
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 PLL402-S FAQ
It is a PLL extended male elbow for Dia 4 mm tubing with a 1/4 in PT male thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa and working temperature -20 to +70 C. It takes soft nylon or polyurethane tube. The -S version has a SUS304 stud; all of these figures are identical to the standard PLL402.
No. On the PLL family the push-in body remains PBT and only the male stud is SUS304 stainless. AirTAC does not re-rate the part either - pressure, vacuum and temperature figures carry over from the standard PLL402 unchanged, and no surface finish or certification figures are published for the stainless line.
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