Airtac PSL Throttle Speed Control Fitting PSL6-M5A
The AirTAC Airtac PSL Throttle Speed Control Fitting PSL6-M5A 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 PSL6-M5A
The PSL6-M5A is a fixed-direction speed controller that sets how fast an actuator moves by restricting air in one direction while letting it run free the other way. This is the A, or meter-out, version: flow from the M5 thread port out to the Dia 6 tube is throttled, and the return direction passes unthrottled. AirTAC lists meter-out as the first-choice control method, because throttling the exhaust of a double-acting cylinder traps a back-pressure cushion that keeps the stroke smooth instead of letting it lurch under a changing load.
Adjustment is a knurled knob under an aluminium locking cap - close the cap and vibration or an accidental brush cannot drift the setting. The body is brass with a PBT plastic holder, the thread port is M5, and the push-in collet accepts Dia 6 soft nylon or polyurethane tubing. Note that the tube direction is fixed on the PSL shape; if you need the fitting to swivel, look at the PSS universal version instead.
Airtac PSL Throttle Speed Control Fitting PSL6-M5A Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL6-M5A |
|---|---|
| Type | Speed controller, threaded elbow |
| Series | PSL |
| Adjustment | Knob with aluminium-alloy locking cap |
| Orientation | Fixed tube direction |
| Size class | Mini series (-M) |
| 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 PSL6-M5A
| 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. |
| -M | Mini series. |
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 PSL6-M5A Is Used
Electronics pick-and-place head
A compact pneumatic gripper lifting SMD trays must descend without bouncing the component out of the vacuum cup. Meter-out exhaust control on the Dia 6 line damps the final approach.
Laboratory clamp fixture
Sample-holding clamps on analytical instruments close onto glass and machined carriers. The locking knob lets a technician set a gentle close once and seal it against bumps.
Small dosing pusher
A short-stroke cylinder that indexes pill blisters or cosmetic vials on a benchtop filling rig needs a repeatable push speed; the M5 port fits the compact manifold used on these machines.
Is the Airtac PSL Throttle Speed Control Fitting PSL6-M5A the Right Part?
Size your actuator first, then the fitting. On the M5 thread ladder this Dia 6 version is the largest PSL offered - the only smaller sibling on M5 is the PSL4-M5A for Dia 4 tube, which suits miniature grippers and sensing cylinders with lower air demand. If your tubing is Dia 8 or larger, step up to the 1/8 inch thread family (PSL8-01A and above) rather than forcing a small port to carry a big bore. Whichever size you pick, mount the controller directly at the cylinder port: the throttled air volume is then only the short tube stub and the cylinder chamber, which gives crisper speed control than throttling at the valve end of a long line.
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 PSL6-M5A FAQ
Tube size Dia 6 mm, thread M5, control method A (meter-out: thread to tube is throttled, reverse is free). Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, usable vacuum to -750 mmHg (10 Torr), operating temperature -20 to +70 C. It is rated for soft nylon or polyurethane tubing, and the standard colour is grey (add D for black).
Meter-out throttles the air leaving a double-acting cylinder, so the cylinder works against a back-pressure cushion and the stroke stays smooth even when the load changes. Meter-in throttles the supply instead, which suits single-acting cylinders; applied to a double-acting cylinder under varying load it commonly causes stick-slip motion. AirTAC itself states meter-out is the first priority, which is why this A-suffix version is the default pick.
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