Airtac PSL Throttle Speed Control Fitting PSL1002B-S
SUS304 stainless variant (-S)The AirTAC Airtac PSL Throttle Speed Control Fitting PSL1002B-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 PSL1002B-S
The AirTAC PSL1002B-S is a stainless-steel speed controller that throttles air in one direction while letting it pass freely in the other, so you can dial in how fast an actuator strokes. The B suffix marks this unit as meter-in: air flowing from the 1/4in PT thread port out through the Dia 10 tube runs unthrottled, and it is the return path that gets restricted. That behaviour is what a single-acting, spring-return cylinder wants, because it is the supply flow that sets the speed of its only powered stroke.
Adjustment is by a knob with an aluminium locking cap that holds the setting against vibration. In this -S variant the throttling column is SUS304 stainless steel in place of the brass used on the standard PSL line, the spring gasket is stainless, and the body is aluminium alloy or SUS304 depending on the part, which suits washdown and copper-sensitive processes. The rating is unchanged from the standard line: 0-1.0 MPa working pressure, -20 to +70 C.
Airtac PSL Throttle Speed Control Fitting PSL1002B-S Technical Specifications
| Model | Airtac PSL Throttle Speed Control Fitting PSL1002B-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 PSL1002B-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 PSL1002B-S Is Used
Spring-return clamp on a checkweigher
A single-acting clamp pad lowering onto packed cartons on a checkweigher line is metered in through this Dia 10 controller, so the pad contacts gently and the spring return stays unrestricted and fast.
Plating-line lift finger
On an electroplating transfer arm, a SUS304 throttling column instead of brass resists acid mist and avoids copper contamination in the bath environment, while the 1/4in PT thread seats straight into the valve manifold.
Dosing probe actuator in food washdown
A spring-return probe that dips into a filling head is slowed on its powered stroke via the meter-in restriction; the stainless internals and the locking knob survive daily caustic hose-down without losing the set speed.
Is the Airtac PSL Throttle Speed Control Fitting PSL1002B-S the Right Part?
Choose meter-in (B) when your actuator is single-acting and speed is set by the supply side; a meter-out (A) controller is AirTAC's default recommendation only for double-acting cylinders, where exhaust back-pressure keeps the stroke smooth. This PSL body has a fixed tube direction, so if you need the fitting to swivel, step up to the PSS universal series instead. If a setting that survives accidental knocks matters more than fast hand adjustment, the push-lock PTL range in the same Dia 10 x 1/4in size is the alternative.
Sizing both ways: one step down on the 1/4in thread ladder is Dia 8 (PSL802B-S), which restricts a smaller volume and suits lighter actuators; there is no Dia 12 option on the 1/4in thread, so the step up is the 3/8in-thread PSL1203B-S. Mount the controller directly at the cylinder port so the throttled volume of trapped air stays as small as possible and the 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 PSL1002B-S FAQ
It is a meter-in (B) PSL speed controller for Dia 10 mm tube with a 1/4in PT thread port. Working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, negative pressure -750 mmHg (10 Torr), operating temperature -20 to +70 C, for soft nylon or polyurethane tubing. The -S variant uses a SUS304 stainless throttling column (replacing brass), stainless spring gasket, and aluminium alloy or SUS304 body; the adjustment knob, locking cap and ratings are identical to the standard PSL line.
No. Like every speed controller in this series it is designed to throttle, and it will weep slightly when the knob is fully closed, so it must not be relied on to isolate a circuit. For a positive shut-off use AirTAC's PHV finger valve, which is a true manual quarter-turn shut-off valve. Also note this controller has no built-in silencer; add a separate silencer on the exhaust if exhaust noise needs control.
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