Airtac PLL L-Type Extended Thread Connector PLL803D-S
SUS304 stainless variant (-S)The AirTAC Airtac PLL L-Type Extended Thread Connector PLL803D-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 PLL803D-S
The PLL803D-S is an AirTAC PLL extended male elbow, a one-touch fitting that joins Dia 8 mm soft nylon or polyurethane tubing to a 3/8 in PT female port at a fixed 90 degrees. The extended stud is the point of this prefix: it is longer than the stud on the standard PL male elbow, so a wrench has more engagement and the body stands clear of crowded ports. Push the 8 mm tube home and the internal chuck grips it; press the release ring and it frees. The D in the code gives this fitting a black body rather than the standard grey.
This is a resin-line part, not the metal BPC line: working pressure 0-1.0 MPa, vacuum to -750 mmHg, proof pressure 1.5 MPa, temperature -20 to +70 C. On the -S suffix the specification is unchanged, and the construction is specific: the body stays PBT while the threaded stud is SUS304. That stainless stud is the corrosion-critical surface, because the male thread is where condensate and wash-down residue collect against the mating port. AirTAC ships threaded parts with sealant already on the thread.
Airtac PLL L-Type Extended Thread Connector PLL803D-S Technical Specifications
| Model | Airtac PLL L-Type Extended Thread Connector PLL803D-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 PLL803D-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 PLL803D-S Is Used
Wash-down conveyor cylinder port
On a food or beverage conveyor that is hosed down each shift, a Dia 8 line feeding a 3/8 in cylinder port benefits from the SUS304 stud, which resists the crevice corrosion that attacks brass threads in wet, detergent-laden air.
Coastal packaging machinery
Salt-laden air near a shoreline plant corrodes plated brass studs inside control enclosures and on exposed machine frames. A stainless-stud elbow at the Dia 8 drop line to a gripper or stopper cylinder keeps the threaded joint sound.
Pneumatic press in a tight guard
Where a press cylinder's 3/8 in port sits close to the guard wall or a proximity switch, the extended PLL stud lets the body angle the Dia 8 hose clear of obstructions while leaving wrench room to tighten the joint.
Is the Airtac PLL L-Type Extended Thread Connector PLL803D-S the Right Part?
On the 3/8 in thread row of the PLL ladder, this SKU sits between PLL603 (Dia 6 tube) below and PLL1003 (Dia 10 tube) above. Stepping down to 6 mm suits compact actuators and lighter lines; stepping up to 10 mm moves more air to larger bores with the same 3/8 in port. Note the ladder rule: if you need a 1/2 in thread instead, PLL only offers it with Dia 10 or Dia 12 tube, so an 8 mm tube cannot follow you up that step. Tube OD must match exactly - a Dia 8 fitting will not seal on 1/4 in (6.35 mm) tube.
Choose the extended elbow shape when a standard PL elbow would bottom out against a nearby fitting, a manifold wall or a cylinder head, leaving no room for a wrench. If you need the fitting to pass through a panel, PMF bulkhead is the right shape 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 PLL803D-S FAQ
It is an AirTAC PLL extended male elbow for Dia 8 mm tubing with a 3/8 in PT male thread. Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. Body PBT in black (D suffix), threaded stud SUS304, POM release button and chuck, NBR O-ring. Thread comes pre-coated with sealant.
No. On this PLL-series variant only the threaded stud is SUS304; the elbow body remains PBT, exactly as on the standard part. The pressure, vacuum and temperature ratings are identical to the non-stainless PLL803D, so you are buying corrosion resistance at the thread, not a re-rated fitting.
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