Airtac PSL Throttle Speed Control Fitting PSL10-03A
The AirTAC Airtac PSL Throttle Speed Control Fitting PSL10-03A 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 PSL10-03A
The PSL10-03A is a threaded speed controller that sets how fast an actuator moves by restricting air in one direction only. With the A suffix this is the meter-out version: flow entering through the 3/8in PT thread port and leaving through the Dia 10 tube is throttled, while air travelling the opposite way passes through the one-way check unrestricted. AirTAC treats meter-out as the first-choice control method, because on a double-acting cylinder driven by a solenoid valve it holds a back-pressure cushion ahead of the piston, keeping the stroke smooth and free of stick-slip under a varying load. The handle is marked A so the setting direction is obvious on the machine.
Adjustment is a brass throttling column turned by a knob with an aluminium locking cap, so a vibration-heavy panel cannot quietly wind the setting away. The body carries a fixed tube union, unlike the PSS universal version where the union swivels through 360 degrees, so plan the tubing route to suit the body orientation. The 3/8in PT port is a taper thread that seals on the flanks with sealant tape rather than on a face, and the soft nylon or polyurethane tube pushes straight into the Dia 10 one-touch socket. Standard colour is grey, NBR seals, working range -20 to +70 C.
Airtac PSL Throttle Speed Control Fitting PSL10-03A Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL10-03A |
|---|---|
| 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 PSL10-03A
| 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 PSL10-03A Is Used
Carton indexing pusher
A 3/8in port suits the larger valve manifolds typically plumbed on conveyor lanes, and meter-out control lets a pusher ease a carton into the timing screw instead of bouncing it off the guide rail.
CNC fixture clamp
Throttle the exhaust on a workholding clamp so the jaws settle onto a machined face without a hammer blow, and the locking cap holds the setting against the vibration of the spindle.
Palletiser grip arm
On a layer-forming palletiser, a Dia 10 circuit has enough bore to cycle a horizontal slide briskly while the A-type throttle stops the arm slewing fast enough to swing the load loose.
Is the Airtac PSL Throttle Speed Control Fitting PSL10-03A the Right Part?
Match the control method to the actuator before anything else. A meter-out controller like this PSL10-03A is the default for double-acting cylinders fed from a solenoid valve; a meter-in (B) part belongs with single-acting cylinders, where throttling the supply gives the gentler stroke. Choose the PSL shape when you want to screw the controller straight into the cylinder or valve port; step to PSS if the tube needs to swivel, or to PSA/PTA if you need an inline tube-to-tube unit with no thread port at all. On this Dia 10 bore the thread ladder runs from 1/4in (PSL10-02A) up to 1/2in (PSL10-04A), so the same tube size is available with either a smaller or larger port.
Sizing around this code: one step down in tube is the Dia 8 PSL80-03A, one step up is the Dia 12 PSL12-03A - a bigger bore moves more air per stroke, which shortens cycle times but needs a physically larger fitting and tubing run. Whichever size you pick, mount the controller directly at the actuator port so the throttled volume stays small and response to the knob is immediate. A SUS304 stainless variant of this family exists for wash-down or copper-sensitive lines, with identical pressure and temperature ratings.
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 PSL10-03A FAQ
It is a meter-out (A) PSL speed controller for Dia 10 mm tube with a 3/8in PT taper thread port. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it tolerates vacuum down to -750 mmHg (10 Torr), proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. Applicable tubing is soft nylon or polyurethane; the standard body colour is grey with a D suffix for black.
The PT port is a taper thread, so wrap PTFE sealant tape on the male thread before fitting - the seal is made on the thread flanks, not a face gasket, and keep tape clear of the air path. Do not use this controller to isolate a circuit: by design it weeps slightly when fully closed. For a true shut-off at this size use the AirTAC PHV finger valve instead.
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