Airtac PSL Throttle Speed Control Fitting PSL602AD
The AirTAC Airtac PSL Throttle Speed Control Fitting PSL602AD 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 PSL602AD
The PSL602AD is a one-touch speed controller that throttles air in one direction while letting it pass freely the other way, so you can set how fast an actuator strokes without losing force. This code ends in A, which makes it meter-out: flow leaving the 1/4in thread port toward the Dia 6 tube is controlled, and the return path runs free. AirTAC rates meter-out as the first-choice control method, because on a solenoid-driven double-acting cylinder the throttled exhaust builds a back-pressure cushion that keeps the stroke smooth instead of letting the load run away or stick-slip. The body comes in black rather than the standard grey, which the D suffix in the ordering code signals.
Adjustment is a knob on an aluminium-alloy locking cap: twist to set the speed, then tighten the cap down so machine vibration and curious hands cannot move it. Inside, a brass throttling column and brass body meter the air, while the PBT holder carries the push-in fitting for 6mm soft nylon or polyurethane tubing. The 1/4in thread screws straight into the cylinder port or manifold face. Like every controller in this family it handles 0-1.0 MPa of working pressure and down to -750 mmHg vacuum, so the same part can govern both pressure strokes and vacuum ejector circuits.
Airtac PSL Throttle Speed Control Fitting PSL602AD Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL602AD |
|---|---|
| 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 PSL602AD
| 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 PSL602AD Is Used
Pick-and-place arm on a PCB line
Metering the exhaust of a compact double-acting cylinder keeps a vacuum-cup arm descending at a controlled pace onto fragile SMD panels, with the 6mm bore sized for short, repeatable strokes.
Carton sealing clamp on a packaging machine
The locking cap holds the closure speed of a clamp that presses a hot-glue head against corrugated flaps, so the setting survives shift-long vibration on the sealer frame.
Indexing pusher timed to a belt
A 1/4in-port cylinder kicking product across a conveyor stroke at a fixed cadence; the black D-body controller sets the push speed so parts arrive at the next station without tipping.
Is the Airtac PSL Throttle Speed Control Fitting PSL602AD the Right Part?
Pick meter-out (this A code) for double-acting cylinders fed by a solenoid valve, and meter-in only for single-acting actuators. Choose this fixed-body PSL over the swivelling PSS when the tube exits in one set direction and the port is on a panel or cylinder head where a swivel buys nothing; step up to PSS only if the fitting has to rotate to line up with the tube run. If adjustments get knocked in service, the push-lock PTL802A resists tampering better than a knob, but the knob here is faster to set during commissioning. On the size ladder, PSL602AD is the smallest tube AirTAC offers on a 1/4in thread - dropping the thread to 1/8in opens up Dia 4 and Dia 6 options like the PSL601A, while climbing one step gives the PSL802A with an 8mm bore and a different flow curve for shorter stroke times. Whatever size you land on, install the controller directly at the cylinder port so the throttled air volume stays small and response stays crisp.
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 PSL602AD FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, usable under negative pressure to -750 mmHg (10 Torr), and a media temperature range of -20 to +70 C. This SKU takes Dia 6mm soft nylon or polyurethane tube on a 1/4in PT thread, is the meter-out (A) control method, and ships in black per the D suffix. AirTAC publishes the flow behaviour as a characteristic curve rather than a single Cv or Kv figure.
No. A speed controller is a flow regulator, not an isolation valve - even fully closed it is designed to leak slightly, so never rely on it to lock a load in place. For a shut-off function use the PHV finger valve family or a separate ball valve upstream. Also note the PSL602AD has no built-in silencer; if exhaust noise at the cylinder port matters, add a silencer as a separate item.
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