
The AirTAC Airtac PL L Connector PL401D 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 PL401D is a one-touch male elbow in the black colour option, turning a Dia 4 mm tube through 90 degrees into a 1/8 inch PT male thread. Push the 4 mm tube straight in and the stainless spring gasket and POM chuck grip it against the brass inner fitting; press the POM release ring to free it again. The D suffix on the PL family changes the body itself to black, not merely the button as on PC and POC, so it reads as a deliberate equipment colour rather than a hardware-store grey.
This is the resin and brass spec profile, not the metal BP line: working pressure 0-1.0 MPa, vacuum down to -750 mmHg, proof pressure 1.5 MPa and a working temperature of -20 to +70 C. It is rated for soft nylon or polyurethane tube. The 1/8 inch thread arrives with sealant already applied, so PT ports seal without tape or extra compound.
| Model | Airtac PL L Connector PL401D |
|---|---|
| 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 compact robot arm routes Dia 4mm pilot tubing to a small gripper cylinder; the PL401D makes the 90 degree turn at the port inside a tight cover instead of looping the tube over the housing.
Where a valve manifold has 1/8in PT pilot ports fed by thin signal lines, this black elbow drops the tubing down beside the body and keeps the run clear of the coil housing.
Lab sampling skids and detector enclosures use Dia 4mm nylon tube at low flow; the elbow reaches into cramped enclosures where a straight connector would foul the lid or side wall.
Dia 4 is the smallest tube the PL elbow is made in, so there is no step down; the next size up is Dia 6 (PL601), which suits short cylinder and actuator feeds rather than the low-volume pilot and signal duties the 4 mm bore is drawn for. On the thread side, 1/8 inch sits between M5 (PL4M5, sealed by a gasket rather than sealant) and 1/4 inch (PL402) - match it to the actual port on your valve or manifold, not to habit.
Tube OD must match exactly: a Dia 4 fitting will not grip 1/4 inch tube, and 1/4 inch OD is a different number from a 1/4 inch thread. If you need the same 90 degree turn to pass through a panel wall instead of standing off it, the bulkhead male elbow PLM4 is the shape for the job, taking an M12x1 locknut.
Quick checklist
It is a one-touch male elbow joining Dia 4mm tube to a 1/8 inch PT male thread. Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure to -750 mmHg, proof pressure 1.5 MPa, temperature -20 to +70 C, for soft nylon or polyurethane tube. The thread ships with sealant pre-applied.
No. The chuck is sized for one tube OD only, and on this part that is 4mm. If your tube is 1/4 inch OD, order the PL in Dia 4-1/4 inch equivalents is not the answer - you need PL1201 for 12mm or, for 1/4 inch OD tube, the PL402 is still 4mm tube; check the tube size in the code first digit and pick the matching PL model. The thread size in the code (01 = 1/8in) is a separate choice from the tube size.
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