Airtac PLL L-Type Extended Thread Connector PLL401D-S
SUS304 stainless variant (-S)The AirTAC Airtac PLL L-Type Extended Thread Connector PLL401D-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 PLL401D-S
The PLL401D-S is an AirTAC PLL extended male elbow from the resin one-touch range, joining Dia 4 mm soft nylon or polyurethane tube to a 1/8 in PT male thread. The D suffix gives the black body finish, and unlike the PC and POC connectors, where D only changes the release button, on the PLL series it changes the body colour too. The extended nose sets this shape apart from the plain PL elbow: the male thread reaches further out from the elbow axis, leaving room for fingers, a spanner and adjacent fittings in crowded ports. Connection is genuinely one-touch - push the tube firmly home, the internal chuck grips the OD, and pressing the release ring frees it again.
This is the resin and brass spec profile, not the metal BP line: working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and a temperature window of -20 to +70 C. The -S suffix does not change any of those figures. On the PLL family the stainless upgrade is applied to the threaded stud, which becomes SUS304, while the elbow body stays PBT with a POM release button and NBR O-ring. The 1/8 in thread arrives with sealant already applied, so it seals straight into the port without extra tape.
Airtac PLL L-Type Extended Thread Connector PLL401D-S Technical Specifications
| Model | Airtac PLL L-Type Extended Thread Connector PLL401D-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 PLL401D-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 PLL401D-S Is Used
Food-line wash-down drop to a small vacuum ejector
A Dia 4 mm signal line feeding a compact ejector above a bakery conveyor gets rinsed with caustic foam every shift; the SUS304 stud on the PLL401D-S shrugs off what a plated brass stud would slowly lose.
Elbow at a gripper port inside a tight machine guard
On a pick-and-place unit, the cylinder port sits millimetres from the guard wall. The extended nose puts the 1/8 in thread clear of the wall so a spanner fits, while the elbow turns the Dia 4 tube along the manifold run.
Salt-air actuation on marine deck hardware
Pneumatic door and hatch cylinders on a workboat's deck see salt spray daily; the SUS304 threaded stud plus the -20 to +70 C resin rating keeps the Dia 4 control line holding from a cold North Sea morning to a warm engine-room feed.
Is the Airtac PLL L-Type Extended Thread Connector PLL401D-S the Right Part?
On the 1/8 in PLL ladder this Dia 4 version is the smallest tube size made - there is no Dia 3.2 mini option in the PLL series, since the 3.2 mm size exists only on the PC and PL mini lines. Step up to PLL601 for Dia 6 tube on the same 1/8 in thread if the actuator or sensor you feed takes 6 mm hose; the bore grows but the port thread stays the same. If your port is an M5x0.8 tapping instead, PLL40M5 carries the same Dia 4 tube on the smaller thread. Whatever you choose, the tube OD must match exactly - a Dia 4 fitting will not grip a 5/32 in or Dia 6 tube, and forcing it leaks or blows off under pressure.
Where the shape is right: use the extended elbow rather than a straight PC connector whenever the fitting must angle away from a wall, panel face or adjacent boss and you still need wrench room on the thread. If you need to pass the thread through a panel and nut it off, the PLM bulkhead male elbow is the correct alternative.
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 PLL401D-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, vacuum capability -750 mmHg (10 Torr), operating temperature -20 to +70 C. This SKU joins Dia 4 mm soft nylon or polyurethane tube to a 1/8 in PT male thread. It is the black-body (D) version of the PLL extended male elbow, and the -S variant specifies a SUS304 stud; every pressure and temperature figure is identical to the standard PLL401D.
On the PLL, PLL, PEB, PED, PYB, PZB, PH and PHW shaped fittings, AirTAC's -S upgrade replaces the threaded stud with SUS304 while the elbow body remains PBT; only the straight PC and POC connectors get an all-stainless body in their -S versions. Nothing else moves: the dimensional tables for the -S part match the standard fitting, and the thread still arrives with pre-applied sealant. If you need the full body in stainless, look at the PC-S or POC-S straight connectors instead of this elbow.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard parts are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC One-Touch Fittings
Request a Quote for Airtac PLL L-Type Extended Thread Connector PLL401D-S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.