Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003AD
The AirTAC Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003AD is a genuine universal speed controller with knob with aluminium-alloy locking cap and 360 degree adjustable tube direction, used to set the speed of a pneumatic cylinder by throttling its air.
- TypeUniversal speed controller
- SeriesPSS
- 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 PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003AD
The AirTAC PSS1003AD is a universal speed controller: air is throttled in one direction and passes freely in the other, so you set exactly how fast a cylinder stroke runs. The A suffix makes this a meter-out part - flow from the 3/8in PT thread port to the Dia 10 tube is restricted, while the return path runs open. AirTAC names meter-out as the first-priority choice because throttling a double-acting cylinder's exhaust leaves a back-pressure cushion that keeps the stroke smooth even under a shifting load.
Unlike the fixed-tube PSL, the PSS body lets the tube fitting swivel a full 360 degrees, so you can orient the tubing after the controller is threaded in and eliminate side-load on the seal. Adjustment is by a knob with an aluminium locking cap: set the speed, then screw the cap down so vibration cannot drift the setting. The D suffix denotes the black body variant instead of the standard grey, which matters on machines where control components are colour-coded. Soft nylon or PU tubing with a 10mm OD is the only tube it takes.
Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003AD Technical Specifications
| Model | Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003AD |
|---|---|
| Type | Universal speed controller |
| Series | PSS |
| Adjustment | Knob with aluminium-alloy locking cap |
| Orientation | 360 degree adjustable 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 PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003AD
| PSS | Universal speed controller. |
|---|---|
| 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 PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003AD Is Used
Conveyor indexing pusher
A Dia 10 pusher cylinder that kicks cartons across a belt between photo-eye signals is threaded straight into the cylinder port, metered out so the carton is nudged square into the stop rather than ricocheting off it.
Palletizer sweep arm
On a palletizer sweeping layer after layer of bags, the swivel body of the PSS1003AD lets the installer route the 10mm hose clear of the frame after mounting, while the meter-out A setting keeps the sweep from slamming the layer into place.
Trailer tail-lift clamp
A clamp cylinder closing onto a lorry tail-gate or load bar benefits from gentle contact: meter-out control on the exhaust side cushions the last of the stroke so the black-anodised or painted surface is not marred by a fast metal-on-metal hit.
Is the Airtac PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003AD the Right Part?
If your actuator is double-acting - the vast majority of pneumatic cylinders - choose this meter-out A version. Meter-in (the B code) suits single-acting cylinders, but on a double-acting cylinder it tends to stick-slip when the load changes mid-stroke. Do not buy this controller expecting to isolate a circuit: fully closed it still weeps by design; for a true shut-off you need the PHV finger valve.
On size: stepping down from Dia 10 on the PSS ladder means PSS802AD on a 1/4in thread (the 3/8in body only offers Dia 10 and 12), which suits lighter cylinders and tighter ports. Stepping up gives PSS1203AD, same 3/8in thread, a 12mm bore that breathes more freely on big-bore rams. Whichever you pick, mount the controller directly at the cylinder port - the throttled air volume stays small and the speed 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 PSS Exhaust Throttle Type Universal Speed Control Valve PSS1003AD FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2); usable under vacuum to -750 mmHg (10 Torr); proof pressure 1.5 MPa; operating temperature -20 to +70 C; media soft nylon or polyurethane tubing. This SKU takes a 10mm OD tube on a 3/8in PT thread, in the black D-colour body, with meter-out (A) flow control.
On the PSL the tube direction is fixed once the fitting is threaded into the port. The PSS universal body lets the tube rotate 360 degrees, so after tightening the 3/8in thread you can swing the hose outlet to line up with your tubing run - useful in crowded manifold layouts where the thread clock-position is dictated by the port, not by the hose. Internally the two behave the same: same knob and locking cap, same A/B control method, same 0-1.0 MPa rating.
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