
The AirTAC Airtac PL L Connector PL402D 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 PL402D is an AirTAC PL male elbow from the resin one-touch range, joining Dia 4 mm soft nylon or polyurethane tube to a 1/4in PT male thread at a fixed 90 degrees. Push the tube straight into the chuck and the stainless spring gasket and POM grip ring hold it against pressure; press the release ring and the tube slides straight back out. This D-suffix version is finished in black on the body as well as the button, which keeps the fitting discreet inside guards or on visible machine frames.
It runs on the resin and brass spec profile: 0 to 1.0 MPa working pressure (0 to 10 kgf/cm2), -750 mmHg vacuum, 1.5 MPa proof pressure and a -20 to +70 C temperature window. The elbow body is PBT over a brass stud that arrives with sealant already on the thread, so it seals straight into a tapped port without extra tape in most cases. AirTAC publishes flow for this family as a characteristic curve only, so capacity should be judged from the 4 mm bore, which suits pilot lines, small actuators and sensing circuits rather than high-volume feeds.
| Model | Airtac PL L Connector PL402D |
|---|---|
| Type | Male elbow |
| Series | PL |
| Connection | Push-in one-touch |
| 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. 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. |
On a bench-top press or clamping fixture with a compact bore cylinder, the PL402D turns the 4 mm air line 90 degrees straight off the 1/4in port, keeping hose away from the moving platen.
Test rigs and lab automation built around Dia 4 polyurethane tubing use this elbow to route pilot air down from a valve manifold without kinking the small-bore tube at the fitting.
Where a 1/4in tapped outlet on a manifold or FRL feeds a low-flow sensor or jet block, the black elbow keeps the 4 mm drop neat and visually unobtrusive inside the enclosure.
Dia 4 is the smallest tube the PL ladder offers, so there is no size below it - step up to Dia 6 (PL602) when the circuit feeds a larger actuator or needs lower resistance over a longer run. On the thread side, drop to 1/8in (PL401) for compact valve ports; note that stepping up to 3/8in on a PL is not an option with Dia 4 tube, because the interface table only allows Dia 6 and above on that port, so a 3/8in port forces you to either move to Dia 6 tube or change the fitting family.
Match the 1/4in PT stud to a tapped 1/4in port and check the elbow swings clear of adjacent hoses before you order - the 90 degree body saves straight length but needs side clearance. If you ever need the same joint through a panel wall, that is a job for the PLM bulkhead male elbow, not this stud fitting.
Quick checklist
It is a one-touch male elbow for Dia 4 mm tube on a 1/4in PT male thread, black body. Working pressure 0 to 1.0 MPa (0 to 10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. Use soft nylon or polyurethane tube only, matched to exactly 4 mm OD.
On PL series fittings the D suffix makes the whole body black, not just the release button - that button-only behaviour applies to the PC and POC straight connectors. Mechanically, dimensions and every pressure and temperature rating are identical to the grey PL402, so you choose it for appearance and visibility, not performance.
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