Airtac PSL Throttle Speed Control Fitting PSL1002BD-S
SUS304 stainless variant (-S)The AirTAC Airtac PSL Throttle Speed Control Fitting PSL1002BD-S 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 PSL1002BD-S
The PSL1002BD-S is a SUS304 stainless speed controller that bleeds air slowly in one direction and lets it pass freely in the other, so an actuator can be timed to a repeatable stroke. This is the B code: meter-in. Air from the 1/4in PT thread port flows to the Dia 10 tube unthrottled; the return path from tube back to port is the controlled side, and the handle is marked B. AirTAC's own guidance points meter-in at single-acting cylinders, where the exhaust vents to atmosphere and the metered supply is what limits speed.
The body carries a knurled knob under a threaded aluminium locking cap, so once the stroke is timed the setting stays put under machine vibration. The -S build swaps the brass throttling column for SUS304 and adds a stainless spring gasket, while the throttling body is aluminium alloy or SUS304 depending on the part. The D suffix makes the body and cap black to suit dark machine panels. Threads are PT taper, which seals on thread interference with a sealant tape, and the tube direction is fixed.
Airtac PSL Throttle Speed Control Fitting PSL1002BD-S Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL1002BD-S |
|---|---|
| Type | Speed controller, threaded elbow |
| Series | PSL |
| Adjustment | Knob with aluminium-alloy locking cap |
| Orientation | Fixed tube direction |
| Body material | Stainless steel 304 (-S variant) |
| 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. Stainless (-S): SUS304 throttling column and body parts in place of brass, for copper-free environments. Ratings are unchanged from the standard version. 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 PSL1002BD-S
| 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. |
| -S | Stainless-steel body. |
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 PSL1002BD-S Is Used
Brine wash-down conveyor stop
A stainless single-acting stopper cylinder on a fish-processing conveyor gets its gentle extension set by metered supply, with the SUS304 column resisting daily salt-water rinse.
Carton closer on a dark packaging line
A spring-return pusher folds carton flaps at a set pace; the black knob and cap match the black powder-coated frame, and the 1/4in port plugs straight into the valve manifold sub-plate.
Plating-line lift ram
A single-acting ram hoists jigs out of an acid bath at a controlled rise speed, where a brass throttle column would corrode and a stainless one survives.
Is the Airtac PSL Throttle Speed Control Fitting PSL1002BD-S the Right Part?
Meter-in (B) is the right pick for a single-acting or spring-return cylinder driven from a solenoid valve. On a double-acting cylinder, meter-in has no back-pressure cushion and tends to stick-slip as the load changes, so choose a meter-out A code instead. A knob sets faster than a push-lock cap because you can turn it continuously by hand, but always close the locking cap before the machine runs. The PSL body is the fixed-port type; if the fitting must rotate to suit a crowded manifold, the PSS universal version swivels 360 degrees.
On the 1/4in thread ladder this Dia 10 tube size is the largest AirTAC makes for the PSL prefix; the step down is PSL0802BD-S on Dia 8. To go larger you must move to a 3/8in port, where Dia 12 (PSL1203BD-S) opens up. Mount the controller directly in the cylinder port so the throttled air volume stays small and the response to each knob turn 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 PSL1002BD-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), usable under vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and an operating temperature of -20 to +70 C. This SKU takes Dia 10 soft nylon or polyurethane tubing on a 1/4in PT thread port. The stainless build does not re-rate any of these figures; it matches the standard PSL exactly.
No. The dimension tables are identical; only the throttling column (SUS304 instead of brass) and the spring gasket are stainless, and the body may be aluminium alloy or SUS304 depending on the part. Nothing else about the fitting changes, so it drops straight into an existing circuit in place of the standard part.
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