Airtac PLL L-Type Extended Thread Connector PLL402D-S
SUS304 stainless variant (-S)The AirTAC PLL L-Type Extended Thread Connector PLL402D-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 PLL402D-S
The PLL402D-S is an AirTAC PLL extended male elbow, a one-touch fitting that joins Dia 4 mm soft nylon or polyurethane tube to a 1/4" PT male thread. Extended means the threaded stud is longer than the standard PL elbow, giving more metal to grip in the wrench when you tighten the pre-coated thread into the port and swinging the tube outlet clear of the panel face. Push the tube in and the stainless chuck grips it under the spring gasket; press the POM release ring and it slides free.
This is the -S SUS304 variant, and on the PLL family that changes the STUD to stainless steel 304 while the elbow body stays PBT, finished black here per the D suffix. Ratings are exactly the standard resin-line figures: 0-1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure, -20 to +70 C. Do not assume a higher temperature rating because of the stud - the tube itself is the limit at temperature.
Airtac PLL L-Type Extended Thread Connector PLL402D-S Technical Specifications
| Model | Airtac PLL L-Type Extended Thread Connector PLL402D-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 PLL402D-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 PLL402D-S Is Used
Analytical instrument pilot air
Feeding Dia 4 purge or pilot air to a sample-handling manifold in an analytical instrument, where the SUS304 stud resists corrosion from wash-down of the enclosure and the extended thread reaches through the bulkhead boss.
Sensor air on an electronics line
Copper-free-ish confidence for electronics work is not claimed here, but the SUS304 stud suits a PCB conveyor's air-vane sensor feed, with the elbow turning the Dia 4 line down along the frame instead of out into the walkway.
Mini gripper feed on a pick-and-place bench
A Dia 4 supply to a small parallel gripper on a benchtop pick-and-place unit: the extended 1/4" PT stud clears the cylinder head nut, and the elbow keeps the tube inside the guarding envelope.
Is the Airtac PLL L-Type Extended Thread Connector PLL402D-S the Right Part?
Dia 4 is the smallest tube this ladder offers at 1/4" thread, so there is no step down - the only step is up to PLL602-S for Dia 6 tube, which suits short 6 mm drops to valves and small actuators. On the thread axis you can drop to PLL401-S (1/8" PT) or the gasketed M5 version PLL4M5-S if the port is an instrumentation boss; the next size up, 3/8" PT, is not offered with Dia 4 tube in the PLL table, so do not order a PLL403.
Remember the tube OD must match exactly: a Dia 4 chuck will not seal on 1/4" (6.35 mm) imperial tube, even though the numbers look close. If your run is genuinely 1/4" OD, move to a 6 mm or imperial-series part instead.
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 PLL402D-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. It joins Dia 4 mm soft nylon or polyurethane tube to a 1/4" PT male thread. The one-touch chuck and release ring are POM, the guide is aluminium alloy, the spring gasket is stainless and the O-ring is NBR; the -S suffix makes the stud SUS304 while the body remains PBT, black here.
No. On the PLL family the -S only moves the threaded stud to SUS304 - the pressure, vacuum, proof-pressure and temperature figures are identical to the standard grey or black part, and the outside dimensions are the same, so it drops straight into a drawing. On straight PC and POC connectors the whole body goes stainless, but not here; if you need a full 304 body, that is a PC or POC -S part, not this elbow.
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