
The AirTAC Airtac PL L Connector PL402 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 PL402 is an AirTAC PL series one-touch male elbow: a 90 degree fitting that screws a Dia 4 mm tube onto a 1/4 in male PT stud. Push the soft nylon or PU tube home and the POM chuck grips it against the stainless spring gasket for an immediate seal; press the release ring and the tube slides out again. The brass stud arrives with sealant already applied on the thread, so it goes into a PT port without extra tape.
This is the standard resin and brass profile, not the metal BPC line: working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, temperature -20 to +70 C, and it holds vacuum to -750 mmHg (10 Torr). Around the chuck the body is PBT on a brass stud with an NBR O-ring sealing the tube, which is why Dia 4 is the one and only tube this fitting will ever hold.
| Model | Airtac PL L Connector PL402 |
|---|---|
| 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. |
A Dia 4 line is the standard feed for small pneumatic grippers and compact actuator cylinders. The PL402 elbow sits directly on the actuator port so the thin tube leaves downwards and stays clear of the end effector as it cycles.
Compact analytical instruments route Dia 4 PU tubing between valves and detectors where space is minimal. A right-angle brass elbow at each valve port keeps the loop tight without kinking the tube or stealing panel depth.
Assembly and weld fixtures often clamp with Dia 4 mini cylinders mounted close to the fixture face. The elbow turns the supply into the face at 90 degrees, and the stud's factory sealant means no loose PTFE tape migrating into the clamp circuit.
On a 1/4 in stud, Dia 4 is the smallest tube AirTAC makes for a PL elbow, so there is no step down on the tube side; the next size up is the PL602 with Dia 6 tube, which gives a larger bore and more capacity for the same port. If the thread can come down instead, PL4M5 in M5x0.8 carries the same Dia 4 tube but seals with a gasket rather than pre-applied sealant. There is no bigger-thread option for Dia 4: the 3/8 in thread on the PL series starts at Dia 6. Whichever you choose, tube OD must match the chuck exactly - a Dia 4 fitting will not grip 6 mm or any other size. If the line has to pass through a sheet-metal wall instead of ending at a port, the PLM bulkhead male elbow with an M12x1 locknut for Dia 4 is the shape to order.
Quick checklist
It is a resin one-touch male elbow joining Dia 4 mm tube to a 1/4 in male PT thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), vacuum is held to -750 mmHg (10 Torr), proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. Soft nylon or polyurethane tubing only.
No. The Dia 4 chuck grips only Dia 4 tube - tube OD must match exactly. For Dia 6 on the same thread order the PL602. If you can drop the thread instead, PL4M5 keeps Dia 4 tube on an M5x0.8 stud with a gasket seal, while the 3/8 in thread on this series begins at Dia 6, so no larger-thread version of this size exists.
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