
The AirTAC Airtac PL L Connector PL603D-S is a genuine male elbow for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
The AirTAC PL603D-S is a one-touch male elbow from the PL series: a 90-degree turn that lands a 3/8in PT male thread on a port while taking Dia 6 mm soft nylon or polyurethane tube straight into the chuck. Push the tube home and the stainless spring gasket plus POM chuck grip it under spring load; press the release ring and it slides back out for re-routing. The D suffix makes this the black-bodied version of the elbow, and the -S suffix makes the male STUD Stainless steel 304 rather than the standard brass - the elbow body itself stays PBT, so this is a corrosion upgrade at the port interface, not a solid stainless fitting.
This is the resin/brass spec profile, so it runs at 0-1.0 MPa working pressure (negative pressure to -750 mmHg), takes a 1.5 MPa proof pressure, and is rated -20 to +70 C. The 3/8in thread arrives pre-coated with sealant, so it seals onto the PT port without extra tape. Do not confuse it with the metal BP family, which trades pressure (0.9 MPa) for a 150 C temperature rating - this part is the higher-pressure, lower-temperature line.
| Model | Airtac PL L Connector PL603D-S |
|---|---|
| Type | Male elbow |
| Series | PL |
| 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.
| PL | 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. |
On a horizontal form-fill-seal machine, the cylinder port often points at the guard wall, so a straight connector would kink the tube. This 90-degree elbow turns the Dia 6 line parallel to the cylinder body and keeps everything inside the guard envelope.
Where solvents or plating mists attack brass threads at the port, the SUS304 stud on PL603D-S puts a copper-free, corrosion-resistant face into the 3/8in PT tapping while the PBT body keeps the weight and cost down.
A 3/8in PT drop from the header on a rotary bottle filler steps straight into this elbow, feeding Dia 6 vacuum tubing down to a small gripper cup. Dia 6 is the slimmest tube offered on this thread, ideal where the drop has to pass close to the bottle neck.
On a 3/8in PT thread, Dia 6 is actually the smallest tube size AirTAC lists for the PL elbow (the 3/8in ladder runs 6, 8, 10, 12), so there is nothing to step down to within this thread - step up instead to PL803 for Dia 8 tube if the line feeds a larger-bore actuator. If the port is smaller, drop the thread a step to PL602 (Dia 6 on 1/4in PT), which keeps the same tube bore on a more common manifold tapping. Dia 6 on a 1/2in thread also exists (PL604) if you need the big thread on a slim tube for a low-flow pilot line.
One warning that saves returns: the chuck grips the exact outside diameter it is coded for. A Dia 6 fitting will not seal on 1/4in (6.35 mm) tube, and forcing it in is the usual cause of weeping push-in joints. If the elbow is the wrong answer for your routing, a bulkhead union (PM) passes through a panel wall, while the extended PLL elbow moves the seal further off the port for wrench access.
Quick checklist
It is a one-touch male elbow joining Dia 6 mm tube to a 3/8in PT male thread. Working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. The D suffix gives a black PBT body; the -S suffix makes the male stud SUS304. Applicable tubing is soft nylon or polyurethane.
No. On PL-series parts the -S converts only the male stud to Stainless steel 304; the elbow body stays PBT (black, because of the D in the code), and the internal chuck and spring gasket layout is unchanged. All pressure and temperature figures are identical to the standard PL603D, and the dimensions match too, so you can swap one in without redrawing the layout. It is chosen for corrosion and copper-free contact at the port thread, not for a higher pressure rating.
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