Airtac PSL Throttle Speed Control Fitting PSL6M5AD
The AirTAC Airtac PSL Throttle Speed Control Fitting PSL6M5AD is a genuine speed controller, threaded elbow with knob with aluminium-alloy locking cap and fixed tube direction, used to set the speed of a pneumatic cylinder by throttling its air.
- TypeSpeed controller, threaded elbow
- SeriesPSL
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- AdjustmentKnob with aluminium-alloy locking cap
- 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 PSL Throttle Speed Control Fitting PSL6M5AD
The PSL6M5AD is an AirTAC PSL speed controller that screws into an M5 port and grips Dia 6 soft nylon or polyurethane one-touch tubing. It throttles air in one direction to set actuator speed and lets it pass freely in the other, so a cylinder can be braked on one stroke only.
This code carries the A suffix, meaning meter-out: flow from the M5 thread port to the tube is controlled, and the return path runs free. Meter-out is AirTAC's first-priority arrangement because throttling the exhaust of a double-acting cylinder builds a back-pressure cushion that keeps the stroke smooth instead of stick-slipping. Adjustment is a knob backed by an aluminium locking cap, and the D suffix marks this part in black rather than the standard grey. Inside are a brass body and throttling column with a PBT holder, and the tube exit direction is fixed by the PSL body shape.
Airtac PSL Throttle Speed Control Fitting PSL6M5AD Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL6M5AD |
|---|---|
| Type | Speed controller, threaded elbow |
| Series | PSL |
| Adjustment | Knob with aluminium-alloy locking cap |
| Orientation | Fixed tube direction |
| 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. A speed controller is not a shut-off valve - a small leak past a fully closed needle is normal. Close it before applying air, and turn it open slowly. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac PSL Throttle Speed Control Fitting PSL6M5AD
| PSL | Speed controller, threaded 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). |
| A / B | A = meter-out (controls flow from the thread port to the tube). B = meter-in. |
| D | Black. Blank = grey. |
Meter-Out or Meter-In?
- check Meter-out (A) is the default. It throttles the air LEAVING the cylinder, so the piston runs against a back-pressure cushion and moves smoothly.
- check Use meter-out on double-acting cylinders - it is the one AirTAC lists as first priority.
- check Meter-in (B) throttles air ENTERING the cylinder. It suits single-acting cylinders and air motors.
- check Meter-in on a double-acting cylinder tends to give a jerky, stick-slip stroke under varying load.
- check Fit the controller at the cylinder port, not at the valve, so the throttled volume is as small as possible.
Where the Airtac PSL Throttle Speed Control Fitting PSL6M5AD Is Used
Electronics pick-and-place head
M5 ports dominate small valve manifolds on SMT pick-and-place gantries. Meter-out control stops the Z-axis descent from slamming the vacuum cup onto a populated PCB.
Laboratory dispensing pusher
A bench-top fluid dispenser driven by a Dia 6 cylinder needs a repeatable, gentle push for each micro-dose. The locking cap holds the knob against the constant vibration of a solenoid-driven pump.
Bench jig clamp on a workholding fixture
Clamping anodised or polished workpieces in a machining jig requires a soft close so the pad does not mar the surface. The A version cushions the closing stroke while the opening runs unthrottled for fast release.
Is the Airtac PSL Throttle Speed Control Fitting PSL6M5AD the Right Part?
Size your neighbours before committing. Stepping down, the PSL4M5A (Dia 4 tube, same M5 thread) exists on this ladder and suits smaller signal lines, but it chokes a Dia 6 actuator feed. There is no Dia 8 option on M5 at all: to go up you change thread, moving to the PSL6-01A (Dia 6 on 1/8in) or the PSL801A (Dia 8 on 1/8in). The M5 port itself caps usable flow area, so it is a choice for compact valve manifolds, not long or fast strokes. Whichever size you pick, fit the controller directly at the cylinder port so the throttled air volume stays small and response is immediate.
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
- ✓ Meter-out (A) unless you know you need meter-in
Airtac PSL Throttle Speed Control Fitting PSL6M5AD FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, negative pressure -750 mmHg (10 Torr), temperature -20 to +70 C. It fits Dia 6 soft nylon or polyurethane tubing on an M5 PT thread, is meter-out (A) with a knob and locking cap, and the D suffix gives the black body finish.
You can, but the standard practice is to fit it directly at the cylinder port. Meter-out throttling works on the exhaust air, so placing the controller at the port keeps the small compressed volume between valve and cylinder out of the cushioned side, giving crisper speed control and quicker response to knob adjustments.
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